1 20 19 https://geosciencecollections.milne-library.org/files/original/be4a5ee66bb14eb0fa509c9decf05da2.jpg a4e7f36a4d708b8d6f3126d8ab7bc59e Omeka Image File The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files. Width 1936 Height 2592 Bit Depth 8 Channels 3 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Andesite Tuff https://geosciencecollections.milne-library.org/files/original/d150d29ef0591f0c9829f2c539d40a9b.JPG 0259532893afc923dc45912dbcc534db Omeka Image File The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files. Width 1936 Height 2592 Bit Depth 8 Channels 3 https://geosciencecollections.milne-library.org/files/original/86be3a1ae3d8df88e8180f9799fd618a.JPG ad1b5e05686f64b5c6ef215cb1f236b5 Omeka Image File The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files. Width 2560 Height 1920 Bit Depth 8 Channels 3 https://geosciencecollections.milne-library.org/files/original/8b61c0c5db11ac7fe080f8019c153643.JPG 564f3813ff3d97fa2c938666a4ae6f0a Omeka Image File The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files. Width 2560 Height 1920 Bit Depth 8 Channels 3 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource (TMJ) Quartz-rich Metamorphic Suite -- Tanzawa Mountains, Kanto, Japan Description An account of the resource The Tanzawa Mountains in Japan were created in an arc-arc collision, when the Izu-Bonin-Mariana Arc was subducted beneath the Honshu Arc. This eventually accreted into the Tanzawa Mountains. The samples in this collection were found in and around the Tanzawa Mountains. The suite includes hornfels, amphibolites, quartz diorite, granophyres, and other basaltic rocks. The samples range from fine to coarse grained. An interesting feature found on many of the samples was a flow-like swirl of minerals in the thin section, visible in XPL. The quartz diorite samples had crystalline, powdery substances on them, which were analyzed using a Scanning Electron Microscope (SEM). The chemical compositions of the mentioned powdery substances were calcium, aluminum, silicon, and oxygen. Contributor An entity responsible for making contributions to the resource Western Minerals, Inc. References A related resource that is referenced, cited, or otherwise pointed to by the described resource. <p><strong>Start here:<br /></strong>Kawate, S., and Makoto, A., 1998, Petrogenesis of the Tanzawa plutonic complex, central Japan; exposed felsic middle crust of the Izu-Bonin-Mariana Arc: Island Arc, v. 7, p. 342-358, <br />link: http://dx.doi.org/10.1111/j.1440-1738.1998.00194.x.</p> <ul><li>This paper explains the chemical variation and high SiO_2Âpercentage of rocks within Tanzawa region, and describes in some depth the tectonic events that uplifted the Tanzawa Mountains.  </li> </ul><p><strong>Additional resources:<br /></strong></p> <p>Kitamura, K., Ishikawa, M., and Arima, M., 2003, Petrological model of the northern Izu-Bonin-Mariana Arc crust; constraints from high-pressure measurements of elastic wave velocities of the Tanzawa plutonic rocks, central Japan: Tectonophysics, v. 371, p.213-221, <br />link: http://dx.doi.org/10.1016/S0040-1951(03)00229-4</p> <ul><li> <p>This paper researchs the variations in acoustic impedance between different hornblende-gabbroic rocks from Tanzawa, Japan. </p> </li> </ul><p>Mikami, K., 1953, Metamorphic rocks in the southeastern margin of the Tanzawa quartz-diorite mass: Science Reports of Yokohama National University, v. 2, p. 34-49</p> <ul><li>This paper studies the chemical analysis of amphibolites resulting from contact metamorphism of the quartz-diorite mass in the Tanzawa Mountains.</li> </ul><p>Tani, K., Dunkley, D. J., Kimura, J., Wysoczanski, R.J., Yamada, K., and Tatsumi, Y.,2010, Syncollisional rapid granitic magma formation in an arc-arc collision zone: Evidence from the Tanzawa plutonic complex, Japan: Geology [Boulder], v. 38, p.215-218, <br />link: http://dx.doi.org/10.1130/G30526.1</p> <ul><li> <p>This paper discusses the collison that exposed the gabbroic rocks of the Tanzawa plutonic complex, and overall gives the reader an in-depth sturctural history of the Tanzawa Mountains. </p> </li> </ul><p>Yoshimura, T., 1997, Ca-Al silicates in low-grade metavolcanic rocks from southern Tanzawa Mountains, Central Japan: Journal of Mineralogy Petrology and Economic Geology,  v. 92, p. 363-378, <br />link: http://dx.doi.org/10.2465/ganko.92.363.</p> <ul><li> <p>This paper explains prevalence of greenschist facies within the Tanzawa Mountain region, and gives the mineral composition of rocks from southern region of Tanzawa Mountains.</p> </li> </ul><p> </p> <p> </p> <p> </p> <p><br /><br /></p> Spatial Coverage Spatial characteristics of the resource. The samples were found in the Tanzawa Mountains of Kanto, Japan. Temporal Coverage Temporal characteristics of the resource. The Tanzawa Mountains were formed during the late Pliocene. Rock A physical material with a mineral composition. Unit Formation or other descriptive rock category N/A Number of Thin Sections Number of thin sections associated with this sample 1 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Andesite Tuff Description An account of the resource Rock Sample: The color is mainly blue and black. The sample is aphanitic and the cross section of the sample reveals very fined grained phenocrysts (~1mm in diameter). The colors of the phenocrysts range from white, blue, black, or green. It has rough sandy feel to it. There is some major chemical weathering. There is some white residue on the surface which has a minor reaction to Hydrochloric acid. -Hardness = 5.5 -Streak = The dark spots on the sample had a dark-brownish to yellow streak, while the blue part of the sample did not have a streak. Thin Section: Oxidation is shown in the thin section. The matrix has blue swells. Some of the pyroxene crystals are very fine grained and show exhibit a "swirly" texture. The plagioclase crystals exhibit some crytsal-zoning. The sample is hypocrystalline. Others are fractured and filled in with very fine grained matrix. There are large fractures within the pyrozene crystals as well. Matrix is intergrown into coarse grained quartz. -Quartz (40%) -Pyroxene (25%) -K-feldspar (20%) -Plagioclase (15%) -Magnification at 4x/0.10 Scanning Electron Microscope: The blue mineral that is found through out the sample is made up of silicon, oxygen, carbon, calcium, sodium, and aluminum. Date A point or period of time associated with an event in the lifecycle of the resource 1969 Contributor An entity responsible for making contributions to the resource Western Minerals, Inc. Is Part Of A related resource in which the described resource is physically or logically included. <a href="http://www.geosciencecollections.milne-library.org/collections/show/10">Tanzawa Mountains--Metamorphic Suite, Japan</a> Identifier An unambiguous reference to the resource within a given context TMJ-18 Spatial Coverage Spatial characteristics of the resource. Tanzawa Mountains, Japan Rifle range and Inn near Kajaka (SE side of intrusive) Temporal Coverage Temporal characteristics of the resource. N/A Accrual Method The method by which items are added to a collection. Purchased from Western Minerals Inc. https://geosciencecollections.milne-library.org/files/original/dba12e81f1970bfc8b1d89ad30d1d2ca.jpg f015045144dd674bc29bdbbe0eeff011 Omeka Image File The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files. Width 1936 Height 2592 Bit Depth 8 Channels 3 https://geosciencecollections.milne-library.org/files/original/202f6610e6aee69f01fefcfaf9f29ae8.jpg 94a3c8c32a1b8b1ab8eef968f4882eb7 Omeka Image File The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files. Width 1936 Height 2592 Bit Depth 8 Channels 3 https://geosciencecollections.milne-library.org/files/original/a7105e9f8764c60182b1b5703f1c3c8b.JPG 6eac6006fac28b9d966a99ce10b01abb Omeka Image File The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files. Width 2560 Height 1920 Bit Depth 8 Channels 3 https://geosciencecollections.milne-library.org/files/original/8366e5f557066b91049e0c43d40f4dae.JPG a2808211fc0943cd588abe26cdebb18f Omeka Image File The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files. Width 2560 Height 1920 Bit Depth 8 Channels 3 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource (TMJ) Quartz-rich Metamorphic Suite -- Tanzawa Mountains, Kanto, Japan Description An account of the resource The Tanzawa Mountains in Japan were created in an arc-arc collision, when the Izu-Bonin-Mariana Arc was subducted beneath the Honshu Arc. This eventually accreted into the Tanzawa Mountains. The samples in this collection were found in and around the Tanzawa Mountains. The suite includes hornfels, amphibolites, quartz diorite, granophyres, and other basaltic rocks. The samples range from fine to coarse grained. An interesting feature found on many of the samples was a flow-like swirl of minerals in the thin section, visible in XPL. The quartz diorite samples had crystalline, powdery substances on them, which were analyzed using a Scanning Electron Microscope (SEM). The chemical compositions of the mentioned powdery substances were calcium, aluminum, silicon, and oxygen. Contributor An entity responsible for making contributions to the resource Western Minerals, Inc. References A related resource that is referenced, cited, or otherwise pointed to by the described resource. <p><strong>Start here:<br /></strong>Kawate, S., and Makoto, A., 1998, Petrogenesis of the Tanzawa plutonic complex, central Japan; exposed felsic middle crust of the Izu-Bonin-Mariana Arc: Island Arc, v. 7, p. 342-358, <br />link: http://dx.doi.org/10.1111/j.1440-1738.1998.00194.x.</p> <ul><li>This paper explains the chemical variation and high SiO_2Âpercentage of rocks within Tanzawa region, and describes in some depth the tectonic events that uplifted the Tanzawa Mountains.  </li> </ul><p><strong>Additional resources:<br /></strong></p> <p>Kitamura, K., Ishikawa, M., and Arima, M., 2003, Petrological model of the northern Izu-Bonin-Mariana Arc crust; constraints from high-pressure measurements of elastic wave velocities of the Tanzawa plutonic rocks, central Japan: Tectonophysics, v. 371, p.213-221, <br />link: http://dx.doi.org/10.1016/S0040-1951(03)00229-4</p> <ul><li> <p>This paper researchs the variations in acoustic impedance between different hornblende-gabbroic rocks from Tanzawa, Japan. </p> </li> </ul><p>Mikami, K., 1953, Metamorphic rocks in the southeastern margin of the Tanzawa quartz-diorite mass: Science Reports of Yokohama National University, v. 2, p. 34-49</p> <ul><li>This paper studies the chemical analysis of amphibolites resulting from contact metamorphism of the quartz-diorite mass in the Tanzawa Mountains.</li> </ul><p>Tani, K., Dunkley, D. J., Kimura, J., Wysoczanski, R.J., Yamada, K., and Tatsumi, Y.,2010, Syncollisional rapid granitic magma formation in an arc-arc collision zone: Evidence from the Tanzawa plutonic complex, Japan: Geology [Boulder], v. 38, p.215-218, <br />link: http://dx.doi.org/10.1130/G30526.1</p> <ul><li> <p>This paper discusses the collison that exposed the gabbroic rocks of the Tanzawa plutonic complex, and overall gives the reader an in-depth sturctural history of the Tanzawa Mountains. </p> </li> </ul><p>Yoshimura, T., 1997, Ca-Al silicates in low-grade metavolcanic rocks from southern Tanzawa Mountains, Central Japan: Journal of Mineralogy Petrology and Economic Geology,  v. 92, p. 363-378, <br />link: http://dx.doi.org/10.2465/ganko.92.363.</p> <ul><li> <p>This paper explains prevalence of greenschist facies within the Tanzawa Mountain region, and gives the mineral composition of rocks from southern region of Tanzawa Mountains.</p> </li> </ul><p> </p> <p> </p> <p> </p> <p><br /><br /></p> Spatial Coverage Spatial characteristics of the resource. The samples were found in the Tanzawa Mountains of Kanto, Japan. Temporal Coverage Temporal characteristics of the resource. The Tanzawa Mountains were formed during the late Pliocene. Rock A physical material with a mineral composition. Unit Formation or other descriptive rock category Zone I Number of Thin Sections Number of thin sections associated with this sample 1 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Clay and Stilbite Matrix in Sandstone Alternative Title An alternative name for the resource. The distinction between titles and alternative titles is application-specific. Quartz Sandstone Description An account of the resource Rock Sample: The sample appears to be a conglomerate of crystals.The color is tan to dark green. The rock has low specific gravity . There are green, white, and brownish-orange clasts. There are some minor fractures on the outside of the sample. There is some very light banding of minerals. There is an orange coating that could be evidence of chemical weathering. It has rough sandy texture, and is very brittle. Thin Section: There is a very fine matrix with semi-rounded quartz and multiple zoned crystals. The crystals are very disorganized within the thin section. Some of the plagioclase crystals show non-uniform twinning. It is similar to tartan twinning, at a 70 degree angle. Some of the pyroxene is very fine grained and are clumped together in a swirling formation. -Quartz (40%) -K-feldspar (20%) -Plagioclase (20%) -Pyroxene (15%) -Biotite (5%) -Magnification at 4x/0.10 Date A point or period of time associated with an event in the lifecycle of the resource 1969 Contributor An entity responsible for making contributions to the resource Western Minerals, Inc. Is Part Of A related resource in which the described resource is physically or logically included. <a href="http://www.geosciencecollections.milne-library.org/collections/show/10">Tanzawa Mountains--Metamorphic Suite, Japan</a> Identifier An unambiguous reference to the resource within a given context TMJ-17 Spatial Coverage Spatial characteristics of the resource. Tanzawa Mountains, Japan in sandstone of (Zone I) 100-150 feet from locality sampled Temporal Coverage Temporal characteristics of the resource. N/A Accrual Method The method by which items are added to a collection. Purchased from Western Minerals Inc. https://geosciencecollections.milne-library.org/files/original/f27cf84130efd9769597054aea059d3e.jpg 98d61b7a05da988cd6718dc3e888e078 Omeka Image File The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files. Width 1936 Height 2592 Bit Depth 8 Channels 3 https://geosciencecollections.milne-library.org/files/original/b6434c8b86e7ae67bb02cdc344be3b0e.jpg 863fecae1c6981493fa35d0cb9eeb7fc Omeka Image File The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files. Width 1936 Height 2592 Bit Depth 8 Channels 3 https://geosciencecollections.milne-library.org/files/original/977cea69591cd213a1e345ab236ff326.JPG 19e4cff1f781a059e09319484d87d5ad Omeka Image File The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files. Width 2560 Height 1920 Bit Depth 8 Channels 3 https://geosciencecollections.milne-library.org/files/original/14f25b91f97cd832b21711ea635fd8c7.JPG feb8d656ed714ef2a3b015aa619bc2ff Omeka Image File The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files. Width 2560 Height 1920 Bit Depth 8 Channels 3 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource (TMJ) Quartz-rich Metamorphic Suite -- Tanzawa Mountains, Kanto, Japan Description An account of the resource The Tanzawa Mountains in Japan were created in an arc-arc collision, when the Izu-Bonin-Mariana Arc was subducted beneath the Honshu Arc. This eventually accreted into the Tanzawa Mountains. The samples in this collection were found in and around the Tanzawa Mountains. The suite includes hornfels, amphibolites, quartz diorite, granophyres, and other basaltic rocks. The samples range from fine to coarse grained. An interesting feature found on many of the samples was a flow-like swirl of minerals in the thin section, visible in XPL. The quartz diorite samples had crystalline, powdery substances on them, which were analyzed using a Scanning Electron Microscope (SEM). The chemical compositions of the mentioned powdery substances were calcium, aluminum, silicon, and oxygen. Contributor An entity responsible for making contributions to the resource Western Minerals, Inc. References A related resource that is referenced, cited, or otherwise pointed to by the described resource. <p><strong>Start here:<br /></strong>Kawate, S., and Makoto, A., 1998, Petrogenesis of the Tanzawa plutonic complex, central Japan; exposed felsic middle crust of the Izu-Bonin-Mariana Arc: Island Arc, v. 7, p. 342-358, <br />link: http://dx.doi.org/10.1111/j.1440-1738.1998.00194.x.</p> <ul><li>This paper explains the chemical variation and high SiO_2Âpercentage of rocks within Tanzawa region, and describes in some depth the tectonic events that uplifted the Tanzawa Mountains.  </li> </ul><p><strong>Additional resources:<br /></strong></p> <p>Kitamura, K., Ishikawa, M., and Arima, M., 2003, Petrological model of the northern Izu-Bonin-Mariana Arc crust; constraints from high-pressure measurements of elastic wave velocities of the Tanzawa plutonic rocks, central Japan: Tectonophysics, v. 371, p.213-221, <br />link: http://dx.doi.org/10.1016/S0040-1951(03)00229-4</p> <ul><li> <p>This paper researchs the variations in acoustic impedance between different hornblende-gabbroic rocks from Tanzawa, Japan. </p> </li> </ul><p>Mikami, K., 1953, Metamorphic rocks in the southeastern margin of the Tanzawa quartz-diorite mass: Science Reports of Yokohama National University, v. 2, p. 34-49</p> <ul><li>This paper studies the chemical analysis of amphibolites resulting from contact metamorphism of the quartz-diorite mass in the Tanzawa Mountains.</li> </ul><p>Tani, K., Dunkley, D. J., Kimura, J., Wysoczanski, R.J., Yamada, K., and Tatsumi, Y.,2010, Syncollisional rapid granitic magma formation in an arc-arc collision zone: Evidence from the Tanzawa plutonic complex, Japan: Geology [Boulder], v. 38, p.215-218, <br />link: http://dx.doi.org/10.1130/G30526.1</p> <ul><li> <p>This paper discusses the collison that exposed the gabbroic rocks of the Tanzawa plutonic complex, and overall gives the reader an in-depth sturctural history of the Tanzawa Mountains. </p> </li> </ul><p>Yoshimura, T., 1997, Ca-Al silicates in low-grade metavolcanic rocks from southern Tanzawa Mountains, Central Japan: Journal of Mineralogy Petrology and Economic Geology,  v. 92, p. 363-378, <br />link: http://dx.doi.org/10.2465/ganko.92.363.</p> <ul><li> <p>This paper explains prevalence of greenschist facies within the Tanzawa Mountain region, and gives the mineral composition of rocks from southern region of Tanzawa Mountains.</p> </li> </ul><p> </p> <p> </p> <p> </p> <p><br /><br /></p> Spatial Coverage Spatial characteristics of the resource. The samples were found in the Tanzawa Mountains of Kanto, Japan. Temporal Coverage Temporal characteristics of the resource. The Tanzawa Mountains were formed during the late Pliocene. Rock A physical material with a mineral composition. Unit Formation or other descriptive rock category Zone II Number of Thin Sections Number of thin sections associated with this sample 1 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Basaltic Tuffaceous Conglomerate Description An account of the resource Rock Sample: The overall matrix is a dark green blue but there are many different colored clasts that give it a mixture of colors. The color of the clasts range from brick red, pink, white, and green (non-reactant to acid). The texture of the rock is silty. There are massive, very coarse grained clasts that are up to 3cm in length. There are clasts within other clasts. There is one fracture spanning across the rock. There is evidence of minor chemical weathering. The overall shape of the rock is an octahedral. It has eight faces and forms into a jagged ball. Thin Section: The matrix has many globular, navy blue crystals, with an outer shell around them (XPL). Some plagioclase crystals experience tartan twinning. Also, some of the plagioclase is intergrown within other plagioclase crystals. The matrix has a variety of colors in XPL (navy blue, yellow, and brown in various shades), and makes up the majority of the thin section. There are some smaller dark blue crystals that are in the shape of a half spoked wheel (under XPL). There are some very fine grained sized glass crystals within the thin section. -Plagioclase (50%) -Quartz (20%) -Pyroxene (10%) -Olivine (10%) -Biotite (10%) -Magnification at 4x/0.10 Date A point or period of time associated with an event in the lifecycle of the resource 1969 Contributor An entity responsible for making contributions to the resource Western Minerals, Inc. Is Part Of A related resource in which the described resource is physically or logically included. <a href="http://www.geosciencecollections.milne-library.org/collections/show/10">Tanzawa Mountains--Metamorphic Suite, Japan</a> Identifier An unambiguous reference to the resource within a given context TMJ-16 Spatial Coverage Spatial characteristics of the resource. Tanzawa Mountains, Japan (Zone II) Temporal Coverage Temporal characteristics of the resource. N/A Accrual Method The method by which items are added to a collection. Purchased from Western Minerals Inc. https://geosciencecollections.milne-library.org/files/original/067eb3147e71838c04ea8d986c102561.JPG 3bab081ac587fc694ffdaf64f7b127fa Omeka Image File The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files. Width 1936 Height 2592 Bit Depth 8 Channels 3 https://geosciencecollections.milne-library.org/files/original/ec0770b1bff1686641e22b57b46932b0.JPG 3eb783a60fb04b2912f694fd3de0554c Omeka Image File The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files. Width 1936 Height 2592 Bit Depth 8 Channels 3 https://geosciencecollections.milne-library.org/files/original/d4d2b5610ac740f1047b842c75108239.jpg aee0f2f792d5c841513fff00f3c19aba Omeka Image File The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files. Width 1936 Height 2592 Bit Depth 8 Channels 3 https://geosciencecollections.milne-library.org/files/original/d7fcd8811d7339fc9cda85c0f9c4bbc8.jpg d61ac5a78ddf14c834af354a3b0261a3 Omeka Image File The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files. Width 1936 Height 2592 Bit Depth 8 Channels 3 https://geosciencecollections.milne-library.org/files/original/192f0eb8bc63442e94c78ddf5ff7f2da.JPG 91efa8e3f1d1a99b4dcfb393500a1626 Omeka Image File The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files. Width 2560 Height 1920 Bit Depth 8 Channels 3 https://geosciencecollections.milne-library.org/files/original/a0c5eecfc2dc5dc8cf58a696f8c79abc.JPG c3c02fc1fe0da9b321df434763e3391d Omeka Image File The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files. Width 2560 Height 1920 Bit Depth 8 Channels 3 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource (TMJ) Quartz-rich Metamorphic Suite -- Tanzawa Mountains, Kanto, Japan Description An account of the resource The Tanzawa Mountains in Japan were created in an arc-arc collision, when the Izu-Bonin-Mariana Arc was subducted beneath the Honshu Arc. This eventually accreted into the Tanzawa Mountains. The samples in this collection were found in and around the Tanzawa Mountains. The suite includes hornfels, amphibolites, quartz diorite, granophyres, and other basaltic rocks. The samples range from fine to coarse grained. An interesting feature found on many of the samples was a flow-like swirl of minerals in the thin section, visible in XPL. The quartz diorite samples had crystalline, powdery substances on them, which were analyzed using a Scanning Electron Microscope (SEM). The chemical compositions of the mentioned powdery substances were calcium, aluminum, silicon, and oxygen. Contributor An entity responsible for making contributions to the resource Western Minerals, Inc. References A related resource that is referenced, cited, or otherwise pointed to by the described resource. <p><strong>Start here:<br /></strong>Kawate, S., and Makoto, A., 1998, Petrogenesis of the Tanzawa plutonic complex, central Japan; exposed felsic middle crust of the Izu-Bonin-Mariana Arc: Island Arc, v. 7, p. 342-358, <br />link: http://dx.doi.org/10.1111/j.1440-1738.1998.00194.x.</p> <ul><li>This paper explains the chemical variation and high SiO_2Âpercentage of rocks within Tanzawa region, and describes in some depth the tectonic events that uplifted the Tanzawa Mountains.  </li> </ul><p><strong>Additional resources:<br /></strong></p> <p>Kitamura, K., Ishikawa, M., and Arima, M., 2003, Petrological model of the northern Izu-Bonin-Mariana Arc crust; constraints from high-pressure measurements of elastic wave velocities of the Tanzawa plutonic rocks, central Japan: Tectonophysics, v. 371, p.213-221, <br />link: http://dx.doi.org/10.1016/S0040-1951(03)00229-4</p> <ul><li> <p>This paper researchs the variations in acoustic impedance between different hornblende-gabbroic rocks from Tanzawa, Japan. </p> </li> </ul><p>Mikami, K., 1953, Metamorphic rocks in the southeastern margin of the Tanzawa quartz-diorite mass: Science Reports of Yokohama National University, v. 2, p. 34-49</p> <ul><li>This paper studies the chemical analysis of amphibolites resulting from contact metamorphism of the quartz-diorite mass in the Tanzawa Mountains.</li> </ul><p>Tani, K., Dunkley, D. J., Kimura, J., Wysoczanski, R.J., Yamada, K., and Tatsumi, Y.,2010, Syncollisional rapid granitic magma formation in an arc-arc collision zone: Evidence from the Tanzawa plutonic complex, Japan: Geology [Boulder], v. 38, p.215-218, <br />link: http://dx.doi.org/10.1130/G30526.1</p> <ul><li> <p>This paper discusses the collison that exposed the gabbroic rocks of the Tanzawa plutonic complex, and overall gives the reader an in-depth sturctural history of the Tanzawa Mountains. </p> </li> </ul><p>Yoshimura, T., 1997, Ca-Al silicates in low-grade metavolcanic rocks from southern Tanzawa Mountains, Central Japan: Journal of Mineralogy Petrology and Economic Geology,  v. 92, p. 363-378, <br />link: http://dx.doi.org/10.2465/ganko.92.363.</p> <ul><li> <p>This paper explains prevalence of greenschist facies within the Tanzawa Mountain region, and gives the mineral composition of rocks from southern region of Tanzawa Mountains.</p> </li> </ul><p> </p> <p> </p> <p> </p> <p><br /><br /></p> Spatial Coverage Spatial characteristics of the resource. The samples were found in the Tanzawa Mountains of Kanto, Japan. Temporal Coverage Temporal characteristics of the resource. The Tanzawa Mountains were formed during the late Pliocene. Rock A physical material with a mineral composition. Unit Formation or other descriptive rock category Pumpellyite prehnite basaltic tuff breccia Number of Thin Sections Number of thin sections associated with this sample 1 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Pumpellyite Prehnite Basaltic Tuff Breccia Alternative Title An alternative name for the resource. The distinction between titles and alternative titles is application-specific. Pumpellyite Description An account of the resource Rock Sample: The color is mainly a very dark green to dark grey. Some parts of the rock exhibit greasy luster. There are some tannish white spots and some slightly larger dark brown spots. The tannish white mineral reacts with acid. There are dark green and faded dark green phenocrysts(~3mm in size). There are medium to coarse grained white phenocrysts (2-10mm). Some phenocrysts touch each other with no matrix in between. There are some areas that possess a dark grey matrix. There are many fractures through out the sample. It has a rough and bumpy texture overall. Thin Section: There are many micro-fractures and veins. There are many larger fractures as well. There are also circular crystals that have a pointed center. Some of the augite crystals are severely fractured, and have quartz veins running through the fractures. There are many elongated quartz crystals that are curved. There is some glass intergrown into the circular crystals. -Matrix (55%) -Augite (25%) -Quartz (10%) -Plagioclase (10%) -Magnification at 4x/0.10 Date A point or period of time associated with an event in the lifecycle of the resource 1969 Contributor An entity responsible for making contributions to the resource Western Minerals, Inc. Is Part Of A related resource in which the described resource is physically or logically included. <a href="http://www.geosciencecollections.milne-library.org/collections/show/10">Tanzawa Mountains--Metamorphic Suite, Japan</a> Identifier An unambiguous reference to the resource within a given context TMJ-15 Spatial Coverage Spatial characteristics of the resource. Tanzawa Mountains, Japan Northern edge of (Zone III) Temporal Coverage Temporal characteristics of the resource. N/A Accrual Method The method by which items are added to a collection. Purchased from Western Minerals Inc. https://geosciencecollections.milne-library.org/files/original/5dcc7e202d5edc7d51b123be80b5549d.jpg a096514233d13507f63ebe37adb570ad Omeka Image File The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files. Width 1936 Height 2592 Bit Depth 8 Channels 3 https://geosciencecollections.milne-library.org/files/original/b26caeebc3757162b32fb6cf4725cfea.jpg 74789c92856caabbef73625956ba61e3 Omeka Image File The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files. Width 1936 Height 2592 Bit Depth 8 Channels 3 https://geosciencecollections.milne-library.org/files/original/60527548e77cd14ab0b9b3ddcaa023d7.jpg 1774fdcc86e8a4942b379e2bfe8c1502 Omeka Image File The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files. Width 1936 Height 2592 Bit Depth 8 Channels 3 https://geosciencecollections.milne-library.org/files/original/88117d8ebb41a4e239cc00ae19c02ead.JPG b8167d72a0c23a77c268f797f45e6f23 Omeka Image File The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files. Width 2560 Height 1920 Bit Depth 8 Channels 3 https://geosciencecollections.milne-library.org/files/original/c447e6f930eee7c10969bef4271f2057.JPG 031c69988c92ea7196331e2464e8464c Omeka Image File The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files. Width 2560 Height 1920 Bit Depth 8 Channels 3 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource (TMJ) Quartz-rich Metamorphic Suite -- Tanzawa Mountains, Kanto, Japan Description An account of the resource The Tanzawa Mountains in Japan were created in an arc-arc collision, when the Izu-Bonin-Mariana Arc was subducted beneath the Honshu Arc. This eventually accreted into the Tanzawa Mountains. The samples in this collection were found in and around the Tanzawa Mountains. The suite includes hornfels, amphibolites, quartz diorite, granophyres, and other basaltic rocks. The samples range from fine to coarse grained. An interesting feature found on many of the samples was a flow-like swirl of minerals in the thin section, visible in XPL. The quartz diorite samples had crystalline, powdery substances on them, which were analyzed using a Scanning Electron Microscope (SEM). The chemical compositions of the mentioned powdery substances were calcium, aluminum, silicon, and oxygen. Contributor An entity responsible for making contributions to the resource Western Minerals, Inc. References A related resource that is referenced, cited, or otherwise pointed to by the described resource. <p><strong>Start here:<br /></strong>Kawate, S., and Makoto, A., 1998, Petrogenesis of the Tanzawa plutonic complex, central Japan; exposed felsic middle crust of the Izu-Bonin-Mariana Arc: Island Arc, v. 7, p. 342-358, <br />link: http://dx.doi.org/10.1111/j.1440-1738.1998.00194.x.</p> <ul><li>This paper explains the chemical variation and high SiO_2Âpercentage of rocks within Tanzawa region, and describes in some depth the tectonic events that uplifted the Tanzawa Mountains.  </li> </ul><p><strong>Additional resources:<br /></strong></p> <p>Kitamura, K., Ishikawa, M., and Arima, M., 2003, Petrological model of the northern Izu-Bonin-Mariana Arc crust; constraints from high-pressure measurements of elastic wave velocities of the Tanzawa plutonic rocks, central Japan: Tectonophysics, v. 371, p.213-221, <br />link: http://dx.doi.org/10.1016/S0040-1951(03)00229-4</p> <ul><li> <p>This paper researchs the variations in acoustic impedance between different hornblende-gabbroic rocks from Tanzawa, Japan. </p> </li> </ul><p>Mikami, K., 1953, Metamorphic rocks in the southeastern margin of the Tanzawa quartz-diorite mass: Science Reports of Yokohama National University, v. 2, p. 34-49</p> <ul><li>This paper studies the chemical analysis of amphibolites resulting from contact metamorphism of the quartz-diorite mass in the Tanzawa Mountains.</li> </ul><p>Tani, K., Dunkley, D. J., Kimura, J., Wysoczanski, R.J., Yamada, K., and Tatsumi, Y.,2010, Syncollisional rapid granitic magma formation in an arc-arc collision zone: Evidence from the Tanzawa plutonic complex, Japan: Geology [Boulder], v. 38, p.215-218, <br />link: http://dx.doi.org/10.1130/G30526.1</p> <ul><li> <p>This paper discusses the collison that exposed the gabbroic rocks of the Tanzawa plutonic complex, and overall gives the reader an in-depth sturctural history of the Tanzawa Mountains. </p> </li> </ul><p>Yoshimura, T., 1997, Ca-Al silicates in low-grade metavolcanic rocks from southern Tanzawa Mountains, Central Japan: Journal of Mineralogy Petrology and Economic Geology,  v. 92, p. 363-378, <br />link: http://dx.doi.org/10.2465/ganko.92.363.</p> <ul><li> <p>This paper explains prevalence of greenschist facies within the Tanzawa Mountain region, and gives the mineral composition of rocks from southern region of Tanzawa Mountains.</p> </li> </ul><p> </p> <p> </p> <p> </p> <p><br /><br /></p> Spatial Coverage Spatial characteristics of the resource. The samples were found in the Tanzawa Mountains of Kanto, Japan. Temporal Coverage Temporal characteristics of the resource. The Tanzawa Mountains were formed during the late Pliocene. Rock A physical material with a mineral composition. Unit Formation or other descriptive rock category Greenschist Facies (Zone IV) Number of Thin Sections Number of thin sections associated with this sample 1 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Basaltic Tuff Breccia of Actinolite Greenschist Alternative Title An alternative name for the resource. The distinction between titles and alternative titles is application-specific. Chlorite - Muscoivite - Greenschist Description An account of the resource Rock Sample: The sample is brown to white to green in color. It is porphyritic and has foliations that fan out. There are also wide fractures (≤1mm in length). There is a brownish orange coating which is evidence of chemical weathering. There are some holes around the oxidation zones which suggest deep weathering by a liquid. The sample does not react with acid. It has a silty yet jagged texture. Thin Section: There are micro-fractures that are non-uniform. The sample is holocrystalline. The majority of the matrix intergrows within many of the larger crystals. The rest of the thin section has a matrix that cannot be identified from a standard microscope. -Chlorite (30%) -Muscovite (10%) -Serpentine (5%) -Epidote (5%) -Magnification at 4x/0.10 Date A point or period of time associated with an event in the lifecycle of the resource 1969 Contributor An entity responsible for making contributions to the resource Western Minerals, Inc. Is Part Of A related resource in which the described resource is physically or logically included. <a href="http://www.geosciencecollections.milne-library.org/collections/show/10">Tanzawa Mountains--Metamorphic Suite, Japan</a> Identifier An unambiguous reference to the resource within a given context TMJ-14 Spatial Coverage Spatial characteristics of the resource. Tanzawa Mountains, Japan Southern edge of (Zone IV) Temporal Coverage Temporal characteristics of the resource. N/A Accrual Method The method by which items are added to a collection. Purchased from Western Minerals Inc. https://geosciencecollections.milne-library.org/files/original/9184902299803902e82fa391a1ce5c27.jpg 42b0ea099599274d2b1f2857d06a0d7d Omeka Image File The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files. Width 1936 Height 2592 Bit Depth 8 Channels 3 https://geosciencecollections.milne-library.org/files/original/8b363d097dec01432da979b69b11dc7d.jpg 48040624bcf76fa3b62148bf59a72c55 Omeka Image File The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files. Width 1936 Height 2592 Bit Depth 8 Channels 3 https://geosciencecollections.milne-library.org/files/original/46d2fc68da8056bc8d4b45ff26b6a85f.JPG 1d67eea1c36f536761884e8a89e9670f Omeka Image File The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files. Width 2560 Height 1920 Bit Depth 8 Channels 3 https://geosciencecollections.milne-library.org/files/original/1bfc3e0169275c58671bb7dd4fd4a896.JPG dc790a3d7cc57906e308060b4959ead0 Omeka Image File The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files. Width 2560 Height 1920 Bit Depth 8 Channels 3 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource (TMJ) Quartz-rich Metamorphic Suite -- Tanzawa Mountains, Kanto, Japan Description An account of the resource The Tanzawa Mountains in Japan were created in an arc-arc collision, when the Izu-Bonin-Mariana Arc was subducted beneath the Honshu Arc. This eventually accreted into the Tanzawa Mountains. The samples in this collection were found in and around the Tanzawa Mountains. The suite includes hornfels, amphibolites, quartz diorite, granophyres, and other basaltic rocks. The samples range from fine to coarse grained. An interesting feature found on many of the samples was a flow-like swirl of minerals in the thin section, visible in XPL. The quartz diorite samples had crystalline, powdery substances on them, which were analyzed using a Scanning Electron Microscope (SEM). The chemical compositions of the mentioned powdery substances were calcium, aluminum, silicon, and oxygen. Contributor An entity responsible for making contributions to the resource Western Minerals, Inc. References A related resource that is referenced, cited, or otherwise pointed to by the described resource. <p><strong>Start here:<br /></strong>Kawate, S., and Makoto, A., 1998, Petrogenesis of the Tanzawa plutonic complex, central Japan; exposed felsic middle crust of the Izu-Bonin-Mariana Arc: Island Arc, v. 7, p. 342-358, <br />link: http://dx.doi.org/10.1111/j.1440-1738.1998.00194.x.</p> <ul><li>This paper explains the chemical variation and high SiO_2Âpercentage of rocks within Tanzawa region, and describes in some depth the tectonic events that uplifted the Tanzawa Mountains.  </li> </ul><p><strong>Additional resources:<br /></strong></p> <p>Kitamura, K., Ishikawa, M., and Arima, M., 2003, Petrological model of the northern Izu-Bonin-Mariana Arc crust; constraints from high-pressure measurements of elastic wave velocities of the Tanzawa plutonic rocks, central Japan: Tectonophysics, v. 371, p.213-221, <br />link: http://dx.doi.org/10.1016/S0040-1951(03)00229-4</p> <ul><li> <p>This paper researchs the variations in acoustic impedance between different hornblende-gabbroic rocks from Tanzawa, Japan. </p> </li> </ul><p>Mikami, K., 1953, Metamorphic rocks in the southeastern margin of the Tanzawa quartz-diorite mass: Science Reports of Yokohama National University, v. 2, p. 34-49</p> <ul><li>This paper studies the chemical analysis of amphibolites resulting from contact metamorphism of the quartz-diorite mass in the Tanzawa Mountains.</li> </ul><p>Tani, K., Dunkley, D. J., Kimura, J., Wysoczanski, R.J., Yamada, K., and Tatsumi, Y.,2010, Syncollisional rapid granitic magma formation in an arc-arc collision zone: Evidence from the Tanzawa plutonic complex, Japan: Geology [Boulder], v. 38, p.215-218, <br />link: http://dx.doi.org/10.1130/G30526.1</p> <ul><li> <p>This paper discusses the collison that exposed the gabbroic rocks of the Tanzawa plutonic complex, and overall gives the reader an in-depth sturctural history of the Tanzawa Mountains. </p> </li> </ul><p>Yoshimura, T., 1997, Ca-Al silicates in low-grade metavolcanic rocks from southern Tanzawa Mountains, Central Japan: Journal of Mineralogy Petrology and Economic Geology,  v. 92, p. 363-378, <br />link: http://dx.doi.org/10.2465/ganko.92.363.</p> <ul><li> <p>This paper explains prevalence of greenschist facies within the Tanzawa Mountain region, and gives the mineral composition of rocks from southern region of Tanzawa Mountains.</p> </li> </ul><p> </p> <p> </p> <p> </p> <p><br /><br /></p> Spatial Coverage Spatial characteristics of the resource. The samples were found in the Tanzawa Mountains of Kanto, Japan. Temporal Coverage Temporal characteristics of the resource. The Tanzawa Mountains were formed during the late Pliocene. Rock A physical material with a mineral composition. Unit Formation or other descriptive rock category Dolerite Sill (Zone IV) Number of Thin Sections Number of thin sections associated with this sample 1 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Dolerite Sill Alternative Title An alternative name for the resource. The distinction between titles and alternative titles is application-specific. Dolerite Description An account of the resource Rock Sample: The rock is dark green throughout, with a mineral forming white specks. The white mineral does not react with hydrochloric acid. The texture is very rough, and the rock's edges are sharp. Large flat phenocrysts (~ ≤10mm). The sample is non-foliated and has an aphanitic matrix. There is a off-white colored crystal forming on one of the faces. They are bumpy and <0.1mm in depth. There is some minor 70 degree cleavage on the sample. Thin Section: There are micro-fractures, and many of the minerals have a blue-green tint in PPL. There are also larger fractures throughout the thin section. The sample is holocrystalline with some brown glass-like blotches. There is a poikilitic texture while viewed in XPL. -Augite (~30%) -Plagioclase (~60%) -Olivine (5%) -There is little to no quartz -Magnification at 4x/0.10 Scanning Electron Microscope: The light green filament on the face with the label is composed of iron, calcium, silicon, aluminum, magnesium, sodium, oxygen and small amounts of carbon. Date A point or period of time associated with an event in the lifecycle of the resource 1969 Contributor An entity responsible for making contributions to the resource Western Minerals, Inc. Is Part Of A related resource in which the described resource is physically or logically included. <a href="http://www.geosciencecollections.milne-library.org/collections/show/10">Tanzawa Mountains--Metamorphic Suite, Japan</a> Identifier An unambiguous reference to the resource within a given context TMJ-13 Spatial Coverage Spatial characteristics of the resource. Tanzawa Mountains, Japan (Zone IV) Temporal Coverage Temporal characteristics of the resource. N/A Accrual Method The method by which items are added to a collection. Purchased from Western Minerals Inc. https://geosciencecollections.milne-library.org/files/original/dae9b85fdd40ecbde75fae5d58b3e5e6.jpg 2c200ca329dbce783349332d975952f2 Omeka Image File The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files. Width 1936 Height 2592 Bit Depth 8 Channels 3 https://geosciencecollections.milne-library.org/files/original/c2438d66bc207dde207fceaf6a1acd1f.jpg 220881a5b51f9f01b6cdb0c051425152 Omeka Image File The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files. Width 1936 Height 2592 Bit Depth 8 Channels 3 https://geosciencecollections.milne-library.org/files/original/122e9d45209bc427c7c8d630d2a485f8.JPG 73480b8be2c1b387310e1d0472144b4e Omeka Image File The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files. Width 2560 Height 1920 Bit Depth 8 Channels 3 https://geosciencecollections.milne-library.org/files/original/1ad9b9d9573d07e5f21e54db9e12ced7.JPG e7bfb137d875e68f0bfb05e503c165b6 Omeka Image File The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files. Width 2560 Height 1920 Bit Depth 8 Channels 3 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource (TMJ) Quartz-rich Metamorphic Suite -- Tanzawa Mountains, Kanto, Japan Description An account of the resource The Tanzawa Mountains in Japan were created in an arc-arc collision, when the Izu-Bonin-Mariana Arc was subducted beneath the Honshu Arc. This eventually accreted into the Tanzawa Mountains. The samples in this collection were found in and around the Tanzawa Mountains. The suite includes hornfels, amphibolites, quartz diorite, granophyres, and other basaltic rocks. The samples range from fine to coarse grained. An interesting feature found on many of the samples was a flow-like swirl of minerals in the thin section, visible in XPL. The quartz diorite samples had crystalline, powdery substances on them, which were analyzed using a Scanning Electron Microscope (SEM). The chemical compositions of the mentioned powdery substances were calcium, aluminum, silicon, and oxygen. Contributor An entity responsible for making contributions to the resource Western Minerals, Inc. References A related resource that is referenced, cited, or otherwise pointed to by the described resource. <p><strong>Start here:<br /></strong>Kawate, S., and Makoto, A., 1998, Petrogenesis of the Tanzawa plutonic complex, central Japan; exposed felsic middle crust of the Izu-Bonin-Mariana Arc: Island Arc, v. 7, p. 342-358, <br />link: http://dx.doi.org/10.1111/j.1440-1738.1998.00194.x.</p> <ul><li>This paper explains the chemical variation and high SiO_2Âpercentage of rocks within Tanzawa region, and describes in some depth the tectonic events that uplifted the Tanzawa Mountains.  </li> </ul><p><strong>Additional resources:<br /></strong></p> <p>Kitamura, K., Ishikawa, M., and Arima, M., 2003, Petrological model of the northern Izu-Bonin-Mariana Arc crust; constraints from high-pressure measurements of elastic wave velocities of the Tanzawa plutonic rocks, central Japan: Tectonophysics, v. 371, p.213-221, <br />link: http://dx.doi.org/10.1016/S0040-1951(03)00229-4</p> <ul><li> <p>This paper researchs the variations in acoustic impedance between different hornblende-gabbroic rocks from Tanzawa, Japan. </p> </li> </ul><p>Mikami, K., 1953, Metamorphic rocks in the southeastern margin of the Tanzawa quartz-diorite mass: Science Reports of Yokohama National University, v. 2, p. 34-49</p> <ul><li>This paper studies the chemical analysis of amphibolites resulting from contact metamorphism of the quartz-diorite mass in the Tanzawa Mountains.</li> </ul><p>Tani, K., Dunkley, D. J., Kimura, J., Wysoczanski, R.J., Yamada, K., and Tatsumi, Y.,2010, Syncollisional rapid granitic magma formation in an arc-arc collision zone: Evidence from the Tanzawa plutonic complex, Japan: Geology [Boulder], v. 38, p.215-218, <br />link: http://dx.doi.org/10.1130/G30526.1</p> <ul><li> <p>This paper discusses the collison that exposed the gabbroic rocks of the Tanzawa plutonic complex, and overall gives the reader an in-depth sturctural history of the Tanzawa Mountains. </p> </li> </ul><p>Yoshimura, T., 1997, Ca-Al silicates in low-grade metavolcanic rocks from southern Tanzawa Mountains, Central Japan: Journal of Mineralogy Petrology and Economic Geology,  v. 92, p. 363-378, <br />link: http://dx.doi.org/10.2465/ganko.92.363.</p> <ul><li> <p>This paper explains prevalence of greenschist facies within the Tanzawa Mountain region, and gives the mineral composition of rocks from southern region of Tanzawa Mountains.</p> </li> </ul><p> </p> <p> </p> <p> </p> <p><br /><br /></p> Spatial Coverage Spatial characteristics of the resource. The samples were found in the Tanzawa Mountains of Kanto, Japan. Temporal Coverage Temporal characteristics of the resource. The Tanzawa Mountains were formed during the late Pliocene. Rock A physical material with a mineral composition. Unit Formation or other descriptive rock category Greenschist Facies Volcanic (Zone IV) Number of Thin Sections Number of thin sections associated with this sample 1 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Greenschist Alternative Title An alternative name for the resource. The distinction between titles and alternative titles is application-specific. Greenschist Description An account of the resource Rock Sample: The sample color is light brown to dark brown in color with white residue through out the surface. The rock has a light green tint. There is a greasy luster to the sample. There are large white veins and planes of cleavage that follow a foliation pattern. The large white veins react with acid. There is a petal-like residue of white and brown minerals. The sample experienced chemical weathering. The rock has a silty texture. Thin Section: There are some small veins. The matrix is too small to identify with a microscope but it is dark in color while under PPL and a very light yellow color under XPL. Some of the plagioclase is curved. The matrix intergrown in many of the quartz crystals. The sample is holocrystalline. -Quartz (75%) -Unknown Matrix (~15-25%) -Plagioclase (~7%) -Magnification at 4x/0.10 Date A point or period of time associated with an event in the lifecycle of the resource 1969 Contributor An entity responsible for making contributions to the resource Western Minerals, Inc. Is Part Of A related resource in which the described resource is physically or logically included. <a href="http://www.geosciencecollections.milne-library.org/collections/show/10">Tanzawa Mountains--Metamorphic Suite, Japan</a> Identifier An unambiguous reference to the resource within a given context TMJ-12 Spatial Coverage Spatial characteristics of the resource. Tanzawa Mountains, Japan (Zone IV) Temporal Coverage Temporal characteristics of the resource. N/A Accrual Method The method by which items are added to a collection. Purchased from Western Minerals Inc. https://geosciencecollections.milne-library.org/files/original/5854da545542f761153175c9f0066623.jpg 038b893a1ab4b8755b8ea0b92006c70d Omeka Image File The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files. Width 1936 Height 2592 Bit Depth 8 Channels 3 https://geosciencecollections.milne-library.org/files/original/a41d0870126fac55c8a2a2fee123d086.jpg 04f02d73ece3d042a373bb5bfc4a8446 Omeka Image File The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files. Width 1936 Height 2592 Bit Depth 8 Channels 3 https://geosciencecollections.milne-library.org/files/original/56ca40de1836a3338fea842a86705562.jpg 1b0c8e2a6108a8146ebe907be649c456 Omeka Image File The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files. Width 1936 Height 2592 Bit Depth 8 Channels 3 https://geosciencecollections.milne-library.org/files/original/18ebe0c8a5729b4130a0d0b6211a5b5f.jpg 2cd9ce15f4317427d352f08743deb385 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource (TMJ) Quartz-rich Metamorphic Suite -- Tanzawa Mountains, Kanto, Japan Description An account of the resource The Tanzawa Mountains in Japan were created in an arc-arc collision, when the Izu-Bonin-Mariana Arc was subducted beneath the Honshu Arc. This eventually accreted into the Tanzawa Mountains. The samples in this collection were found in and around the Tanzawa Mountains. The suite includes hornfels, amphibolites, quartz diorite, granophyres, and other basaltic rocks. The samples range from fine to coarse grained. An interesting feature found on many of the samples was a flow-like swirl of minerals in the thin section, visible in XPL. The quartz diorite samples had crystalline, powdery substances on them, which were analyzed using a Scanning Electron Microscope (SEM). The chemical compositions of the mentioned powdery substances were calcium, aluminum, silicon, and oxygen. Contributor An entity responsible for making contributions to the resource Western Minerals, Inc. References A related resource that is referenced, cited, or otherwise pointed to by the described resource. <p><strong>Start here:<br /></strong>Kawate, S., and Makoto, A., 1998, Petrogenesis of the Tanzawa plutonic complex, central Japan; exposed felsic middle crust of the Izu-Bonin-Mariana Arc: Island Arc, v. 7, p. 342-358, <br />link: http://dx.doi.org/10.1111/j.1440-1738.1998.00194.x.</p> <ul><li>This paper explains the chemical variation and high SiO_2Âpercentage of rocks within Tanzawa region, and describes in some depth the tectonic events that uplifted the Tanzawa Mountains.  </li> </ul><p><strong>Additional resources:<br /></strong></p> <p>Kitamura, K., Ishikawa, M., and Arima, M., 2003, Petrological model of the northern Izu-Bonin-Mariana Arc crust; constraints from high-pressure measurements of elastic wave velocities of the Tanzawa plutonic rocks, central Japan: Tectonophysics, v. 371, p.213-221, <br />link: http://dx.doi.org/10.1016/S0040-1951(03)00229-4</p> <ul><li> <p>This paper researchs the variations in acoustic impedance between different hornblende-gabbroic rocks from Tanzawa, Japan. </p> </li> </ul><p>Mikami, K., 1953, Metamorphic rocks in the southeastern margin of the Tanzawa quartz-diorite mass: Science Reports of Yokohama National University, v. 2, p. 34-49</p> <ul><li>This paper studies the chemical analysis of amphibolites resulting from contact metamorphism of the quartz-diorite mass in the Tanzawa Mountains.</li> </ul><p>Tani, K., Dunkley, D. J., Kimura, J., Wysoczanski, R.J., Yamada, K., and Tatsumi, Y.,2010, Syncollisional rapid granitic magma formation in an arc-arc collision zone: Evidence from the Tanzawa plutonic complex, Japan: Geology [Boulder], v. 38, p.215-218, <br />link: http://dx.doi.org/10.1130/G30526.1</p> <ul><li> <p>This paper discusses the collison that exposed the gabbroic rocks of the Tanzawa plutonic complex, and overall gives the reader an in-depth sturctural history of the Tanzawa Mountains. </p> </li> </ul><p>Yoshimura, T., 1997, Ca-Al silicates in low-grade metavolcanic rocks from southern Tanzawa Mountains, Central Japan: Journal of Mineralogy Petrology and Economic Geology,  v. 92, p. 363-378, <br />link: http://dx.doi.org/10.2465/ganko.92.363.</p> <ul><li> <p>This paper explains prevalence of greenschist facies within the Tanzawa Mountain region, and gives the mineral composition of rocks from southern region of Tanzawa Mountains.</p> </li> </ul><p> </p> <p> </p> <p> </p> <p><br /><br /></p> Spatial Coverage Spatial characteristics of the resource. The samples were found in the Tanzawa Mountains of Kanto, Japan. Temporal Coverage Temporal characteristics of the resource. The Tanzawa Mountains were formed during the late Pliocene. Rock A physical material with a mineral composition. Unit Formation or other descriptive rock category (Zone V) Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Amphibolite Alternative Title An alternative name for the resource. The distinction between titles and alternative titles is application-specific. Amphibolite Description An account of the resource Rock Sample: <br />The color is a shiny dark grey with a bluish tint. Some parts of the sample are a more dark turquoise. Some faces are lighter and or darker than other faces. There is also a face with a brownish color and another face with a tannish color. The majority of the sample feels silty/sandy but there is one face that feels waxy. There are coarse grained blue-green phenocrysts, ranging in size of (2-8mm). Some of the phenocrysts are white linear phenocrysts (≤10mm in length). The matrix is apharitic. The sample experienced minor chemical weathering with some orange to brown blotches. This may have been due to oxidation. Some erosion took place on the sample, creating crater-like hole on the sides of the sample.<br /><br />Thin Section:<br />PPL. Abundant well-rounded hornblende crystals. Some of the hornblende cryststals are fairly large. The matrix has a flow-like fabric.<br />Hornblende: 50% <br />Plagioclase:30%<br />Quartz: 15%<br />Epidote:5%<br /><span>Magnification at 4x/0.10</span> Date A point or period of time associated with an event in the lifecycle of the resource 1969 Contributor An entity responsible for making contributions to the resource Western Minerals, Inc. Is Part Of A related resource in which the described resource is physically or logically included. <a href="http://www.geosciencecollections.milne-library.org/collections/show/10">Tanzawa Mountains--Metamorphic Suite, Japan</a> Identifier An unambiguous reference to the resource within a given context TMJ-11 Spatial Coverage Spatial characteristics of the resource. Tanzawa Mountains, Japan (Zone V) Temporal Coverage Temporal characteristics of the resource. N/A Accrual Method The method by which items are added to a collection. Purchased from Western Minerals Inc. https://geosciencecollections.milne-library.org/files/original/839c857c50f9d6de912fcca750fba692.jpg 9f99055719150768578df887d18abc29 Omeka Image File The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files. Width 1936 Height 2592 Bit Depth 8 Channels 3 https://geosciencecollections.milne-library.org/files/original/8dcf38819dc9637b8b10947f4e2c1198.jpg 6d31ca4a3507312846a6534d7b2ebb14 Omeka Image File The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files. Width 1936 Height 2592 Bit Depth 8 Channels 3 https://geosciencecollections.milne-library.org/files/original/c24e05b27da23b0a638409056894f569.jpg 10cedf39cb0fa8e3aa7c7a7270ea0b15 Omeka Image File The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files. Width 1936 Height 2592 Bit Depth 8 Channels 3 https://geosciencecollections.milne-library.org/files/original/549763833744696b17b6d33f4e39b25e.JPG 9a07fd657b1fa8f70a6513b8c90ed540 Omeka Image File The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files. Width 2560 Height 1920 Bit Depth 8 Channels 3 https://geosciencecollections.milne-library.org/files/original/9560e720efcacbf7fd147a41d207d087.jpg 5a2f23274881886dc4c2349ec636aba0 Omeka Image File The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files. Width 2560 Height 1920 Bit Depth 8 Channels 3 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource (TMJ) Quartz-rich Metamorphic Suite -- Tanzawa Mountains, Kanto, Japan Description An account of the resource The Tanzawa Mountains in Japan were created in an arc-arc collision, when the Izu-Bonin-Mariana Arc was subducted beneath the Honshu Arc. This eventually accreted into the Tanzawa Mountains. The samples in this collection were found in and around the Tanzawa Mountains. The suite includes hornfels, amphibolites, quartz diorite, granophyres, and other basaltic rocks. The samples range from fine to coarse grained. An interesting feature found on many of the samples was a flow-like swirl of minerals in the thin section, visible in XPL. The quartz diorite samples had crystalline, powdery substances on them, which were analyzed using a Scanning Electron Microscope (SEM). The chemical compositions of the mentioned powdery substances were calcium, aluminum, silicon, and oxygen. Contributor An entity responsible for making contributions to the resource Western Minerals, Inc. References A related resource that is referenced, cited, or otherwise pointed to by the described resource. <p><strong>Start here:<br /></strong>Kawate, S., and Makoto, A., 1998, Petrogenesis of the Tanzawa plutonic complex, central Japan; exposed felsic middle crust of the Izu-Bonin-Mariana Arc: Island Arc, v. 7, p. 342-358, <br />link: http://dx.doi.org/10.1111/j.1440-1738.1998.00194.x.</p> <ul><li>This paper explains the chemical variation and high SiO_2Âpercentage of rocks within Tanzawa region, and describes in some depth the tectonic events that uplifted the Tanzawa Mountains.  </li> </ul><p><strong>Additional resources:<br /></strong></p> <p>Kitamura, K., Ishikawa, M., and Arima, M., 2003, Petrological model of the northern Izu-Bonin-Mariana Arc crust; constraints from high-pressure measurements of elastic wave velocities of the Tanzawa plutonic rocks, central Japan: Tectonophysics, v. 371, p.213-221, <br />link: http://dx.doi.org/10.1016/S0040-1951(03)00229-4</p> <ul><li> <p>This paper researchs the variations in acoustic impedance between different hornblende-gabbroic rocks from Tanzawa, Japan. </p> </li> </ul><p>Mikami, K., 1953, Metamorphic rocks in the southeastern margin of the Tanzawa quartz-diorite mass: Science Reports of Yokohama National University, v. 2, p. 34-49</p> <ul><li>This paper studies the chemical analysis of amphibolites resulting from contact metamorphism of the quartz-diorite mass in the Tanzawa Mountains.</li> </ul><p>Tani, K., Dunkley, D. J., Kimura, J., Wysoczanski, R.J., Yamada, K., and Tatsumi, Y.,2010, Syncollisional rapid granitic magma formation in an arc-arc collision zone: Evidence from the Tanzawa plutonic complex, Japan: Geology [Boulder], v. 38, p.215-218, <br />link: http://dx.doi.org/10.1130/G30526.1</p> <ul><li> <p>This paper discusses the collison that exposed the gabbroic rocks of the Tanzawa plutonic complex, and overall gives the reader an in-depth sturctural history of the Tanzawa Mountains. </p> </li> </ul><p>Yoshimura, T., 1997, Ca-Al silicates in low-grade metavolcanic rocks from southern Tanzawa Mountains, Central Japan: Journal of Mineralogy Petrology and Economic Geology,  v. 92, p. 363-378, <br />link: http://dx.doi.org/10.2465/ganko.92.363.</p> <ul><li> <p>This paper explains prevalence of greenschist facies within the Tanzawa Mountain region, and gives the mineral composition of rocks from southern region of Tanzawa Mountains.</p> </li> </ul><p> </p> <p> </p> <p> </p> <p><br /><br /></p> Spatial Coverage Spatial characteristics of the resource. The samples were found in the Tanzawa Mountains of Kanto, Japan. Temporal Coverage Temporal characteristics of the resource. The Tanzawa Mountains were formed during the late Pliocene. Rock A physical material with a mineral composition. Unit Formation or other descriptive rock category Zone V south of locality 9 Number of Thin Sections Number of thin sections associated with this sample 1 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Granophyre Alternative Title An alternative name for the resource. The distinction between titles and alternative titles is application-specific. Granophyre Description An account of the resource Rock Sample: The sample color is mainly light grey to white. There is a lime green layer as well as some dark grey and brown groupings. It is pegmatic and experiences non-congruent foliation and Y-shaped fractures. There are dark brown to orange areas which indicate that chemical weathering took place. The sample has silty or sandy texture. In some spots around the sample there is a thin layer <0.1mm that resembles fine grained sandpaper in texture and color. It does not react with hydrochloric acid. Some of these "spots" are imbedded ~0.2mm in the exterior of the sample. Thin Section: There are micro-fractures in non-uniform formations. Also there are thick veins of quartz. The sample is hypocrystalline with fine grained size glass. Some of the pyroxene is intergrown into the quartz. -Quartz (80%) -Biotite (10%) -Pyroxene (10%) -Magnification at 4x/0.10 Scanning Electron Microscope: The white power on the outside of the sample was made up of iron, calcium, silicon, aluminum, and little oxygen and carbon. Date A point or period of time associated with an event in the lifecycle of the resource 1969 Contributor An entity responsible for making contributions to the resource Western Minerals, Inc. Is Part Of A related resource in which the described resource is physically or logically included. <a href="http://www.geosciencecollections.milne-library.org/collections/show/10">Tanzawa Mountains--Metamorphic Suite, Japan</a> Identifier An unambiguous reference to the resource within a given context TMJ-10 Spatial Coverage Spatial characteristics of the resource. Tanzawa Mountains, Japan (Zone V) South of Locality 9 Temporal Coverage Temporal characteristics of the resource. N/A Accrual Method The method by which items are added to a collection. Purchased from Western Minerals Inc. https://geosciencecollections.milne-library.org/files/original/5018dccf3ae5a81ea16c4c19d3e69406.JPG 34c8f31899357b6baf46056ed572f58a Omeka Image File The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files. Width 1936 Height 2592 Bit Depth 8 Channels 3 https://geosciencecollections.milne-library.org/files/original/dcf6df0db747e7bccf9b3b6c4a7459dc.JPG b662b8856cc5175c25279bf3b0342464 Omeka Image File The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files. Width 1936 Height 2592 Bit Depth 8 Channels 3 https://geosciencecollections.milne-library.org/files/original/947dd251ce890d17a278741f3d2fcfc1.JPG fec3c9aaa5bb954633bb9c7ab0a5dbbb Omeka Image File The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files. Width 1936 Height 2592 Bit Depth 8 Channels 3 https://geosciencecollections.milne-library.org/files/original/b5c876d8bcc14b2ee5146020a2074684.jpg 3c1c98300308e905957bbb7e9517b7a8 Omeka Image File The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files. Width 2560 Height 1920 Bit Depth 8 Channels 3 https://geosciencecollections.milne-library.org/files/original/af83a2bf3c27b1e6c5516c37828e75c4.JPG 2f5c6046c1ad690c9e9f8b8812ed7dbc Omeka Image File The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files. Width 2560 Height 1920 Bit Depth 8 Channels 3 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource (TMJ) Quartz-rich Metamorphic Suite -- Tanzawa Mountains, Kanto, Japan Description An account of the resource The Tanzawa Mountains in Japan were created in an arc-arc collision, when the Izu-Bonin-Mariana Arc was subducted beneath the Honshu Arc. This eventually accreted into the Tanzawa Mountains. The samples in this collection were found in and around the Tanzawa Mountains. The suite includes hornfels, amphibolites, quartz diorite, granophyres, and other basaltic rocks. The samples range from fine to coarse grained. An interesting feature found on many of the samples was a flow-like swirl of minerals in the thin section, visible in XPL. The quartz diorite samples had crystalline, powdery substances on them, which were analyzed using a Scanning Electron Microscope (SEM). The chemical compositions of the mentioned powdery substances were calcium, aluminum, silicon, and oxygen. Contributor An entity responsible for making contributions to the resource Western Minerals, Inc. References A related resource that is referenced, cited, or otherwise pointed to by the described resource. <p><strong>Start here:<br /></strong>Kawate, S., and Makoto, A., 1998, Petrogenesis of the Tanzawa plutonic complex, central Japan; exposed felsic middle crust of the Izu-Bonin-Mariana Arc: Island Arc, v. 7, p. 342-358, <br />link: http://dx.doi.org/10.1111/j.1440-1738.1998.00194.x.</p> <ul><li>This paper explains the chemical variation and high SiO_2Âpercentage of rocks within Tanzawa region, and describes in some depth the tectonic events that uplifted the Tanzawa Mountains.  </li> </ul><p><strong>Additional resources:<br /></strong></p> <p>Kitamura, K., Ishikawa, M., and Arima, M., 2003, Petrological model of the northern Izu-Bonin-Mariana Arc crust; constraints from high-pressure measurements of elastic wave velocities of the Tanzawa plutonic rocks, central Japan: Tectonophysics, v. 371, p.213-221, <br />link: http://dx.doi.org/10.1016/S0040-1951(03)00229-4</p> <ul><li> <p>This paper researchs the variations in acoustic impedance between different hornblende-gabbroic rocks from Tanzawa, Japan. </p> </li> </ul><p>Mikami, K., 1953, Metamorphic rocks in the southeastern margin of the Tanzawa quartz-diorite mass: Science Reports of Yokohama National University, v. 2, p. 34-49</p> <ul><li>This paper studies the chemical analysis of amphibolites resulting from contact metamorphism of the quartz-diorite mass in the Tanzawa Mountains.</li> </ul><p>Tani, K., Dunkley, D. J., Kimura, J., Wysoczanski, R.J., Yamada, K., and Tatsumi, Y.,2010, Syncollisional rapid granitic magma formation in an arc-arc collision zone: Evidence from the Tanzawa plutonic complex, Japan: Geology [Boulder], v. 38, p.215-218, <br />link: http://dx.doi.org/10.1130/G30526.1</p> <ul><li> <p>This paper discusses the collison that exposed the gabbroic rocks of the Tanzawa plutonic complex, and overall gives the reader an in-depth sturctural history of the Tanzawa Mountains. </p> </li> </ul><p>Yoshimura, T., 1997, Ca-Al silicates in low-grade metavolcanic rocks from southern Tanzawa Mountains, Central Japan: Journal of Mineralogy Petrology and Economic Geology,  v. 92, p. 363-378, <br />link: http://dx.doi.org/10.2465/ganko.92.363.</p> <ul><li> <p>This paper explains prevalence of greenschist facies within the Tanzawa Mountain region, and gives the mineral composition of rocks from southern region of Tanzawa Mountains.</p> </li> </ul><p> </p> <p> </p> <p> </p> <p><br /><br /></p> Spatial Coverage Spatial characteristics of the resource. The samples were found in the Tanzawa Mountains of Kanto, Japan. Temporal Coverage Temporal characteristics of the resource. The Tanzawa Mountains were formed during the late Pliocene. Rock A physical material with a mineral composition. Unit Formation or other descriptive rock category (Zone V) Number of Thin Sections Number of thin sections associated with this sample 1 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Amphibolite Alternative Title An alternative name for the resource. The distinction between titles and alternative titles is application-specific. Amphibolite Description An account of the resource Rock Sample: The sample is very dark grey with light grey foliations. The sample displays thin layering, some areas of chemical weathering, and microfoliations. It is aphanitic. There is quartz- like residue on the outside of the sample. It has a smooth feel throughout. -Hardness = 5-6 -Streak = dark grey Thin Section: You can see very fine crystals within the thin section under the microscope. There is also a irregularly-shaped fracture within a quartz crystal. The sample is hypocrystalline, fine to medium sized glass crystals that flow with the rest of the minerals. A lot of the quartz is intergrown within augite crystals. -Quartz (75%) -Augite (20%) -Plagioclase (5%) -Magnification at 4x/0.10 Date A point or period of time associated with an event in the lifecycle of the resource 1969 Contributor An entity responsible for making contributions to the resource Western Minerals, Inc. Is Part Of A related resource in which the described resource is physically or logically included. <a href="http://www.geosciencecollections.milne-library.org/collections/show/10">Tanzawa Mountains--Metamorphic Suite, Japan</a> Identifier An unambiguous reference to the resource within a given context TMJ-09 Spatial Coverage Spatial characteristics of the resource. Tanzawa Mountains, Japan Creek bed 0.3 Km of south contact of Quartz Diortite (Zone V) Temporal Coverage Temporal characteristics of the resource. N/A Accrual Method The method by which items are added to a collection. Purchased from Western Minerals Inc. https://geosciencecollections.milne-library.org/files/original/9dd9ccd84942b362721ccc59dd9c0e9b.jpg 23cf51713ef7d06170f651342ed47c35 Omeka Image File The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files. Width 1936 Height 2592 Bit Depth 8 Channels 3 https://geosciencecollections.milne-library.org/files/original/425a98201ab72f997fbd1c15a0d80b60.jpg 8a31fbc9655cfc7130505f5f87f61485 Omeka Image File The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files. Width 1936 Height 2592 Bit Depth 8 Channels 3 https://geosciencecollections.milne-library.org/files/original/2661a7e0b9a21c24f2a6d38f24fb9994.jpg b07981420b19229c623f010a7e80b8e3 Omeka Image File The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files. Width 1936 Height 2592 Bit Depth 8 Channels 3 https://geosciencecollections.milne-library.org/files/original/94211e143a8d67920ceff3c6c66de7db.JPG 33095e06335d0b8f244052e0d4ae2682 Omeka Image File The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files. Width 2560 Height 1920 Bit Depth 8 Channels 3 https://geosciencecollections.milne-library.org/files/original/e6677d7d8aae1926e2bb72aa55b7f180.JPG f3c9ef2ad1da94f93401fcdcf28cf573 Omeka Image File The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files. Width 2560 Height 1920 Bit Depth 8 Channels 3 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource (TMJ) Quartz-rich Metamorphic Suite -- Tanzawa Mountains, Kanto, Japan Description An account of the resource The Tanzawa Mountains in Japan were created in an arc-arc collision, when the Izu-Bonin-Mariana Arc was subducted beneath the Honshu Arc. This eventually accreted into the Tanzawa Mountains. The samples in this collection were found in and around the Tanzawa Mountains. The suite includes hornfels, amphibolites, quartz diorite, granophyres, and other basaltic rocks. The samples range from fine to coarse grained. An interesting feature found on many of the samples was a flow-like swirl of minerals in the thin section, visible in XPL. The quartz diorite samples had crystalline, powdery substances on them, which were analyzed using a Scanning Electron Microscope (SEM). The chemical compositions of the mentioned powdery substances were calcium, aluminum, silicon, and oxygen. Contributor An entity responsible for making contributions to the resource Western Minerals, Inc. References A related resource that is referenced, cited, or otherwise pointed to by the described resource. <p><strong>Start here:<br /></strong>Kawate, S., and Makoto, A., 1998, Petrogenesis of the Tanzawa plutonic complex, central Japan; exposed felsic middle crust of the Izu-Bonin-Mariana Arc: Island Arc, v. 7, p. 342-358, <br />link: http://dx.doi.org/10.1111/j.1440-1738.1998.00194.x.</p> <ul><li>This paper explains the chemical variation and high SiO_2Âpercentage of rocks within Tanzawa region, and describes in some depth the tectonic events that uplifted the Tanzawa Mountains.  </li> </ul><p><strong>Additional resources:<br /></strong></p> <p>Kitamura, K., Ishikawa, M., and Arima, M., 2003, Petrological model of the northern Izu-Bonin-Mariana Arc crust; constraints from high-pressure measurements of elastic wave velocities of the Tanzawa plutonic rocks, central Japan: Tectonophysics, v. 371, p.213-221, <br />link: http://dx.doi.org/10.1016/S0040-1951(03)00229-4</p> <ul><li> <p>This paper researchs the variations in acoustic impedance between different hornblende-gabbroic rocks from Tanzawa, Japan. </p> </li> </ul><p>Mikami, K., 1953, Metamorphic rocks in the southeastern margin of the Tanzawa quartz-diorite mass: Science Reports of Yokohama National University, v. 2, p. 34-49</p> <ul><li>This paper studies the chemical analysis of amphibolites resulting from contact metamorphism of the quartz-diorite mass in the Tanzawa Mountains.</li> </ul><p>Tani, K., Dunkley, D. J., Kimura, J., Wysoczanski, R.J., Yamada, K., and Tatsumi, Y.,2010, Syncollisional rapid granitic magma formation in an arc-arc collision zone: Evidence from the Tanzawa plutonic complex, Japan: Geology [Boulder], v. 38, p.215-218, <br />link: http://dx.doi.org/10.1130/G30526.1</p> <ul><li> <p>This paper discusses the collison that exposed the gabbroic rocks of the Tanzawa plutonic complex, and overall gives the reader an in-depth sturctural history of the Tanzawa Mountains. </p> </li> </ul><p>Yoshimura, T., 1997, Ca-Al silicates in low-grade metavolcanic rocks from southern Tanzawa Mountains, Central Japan: Journal of Mineralogy Petrology and Economic Geology,  v. 92, p. 363-378, <br />link: http://dx.doi.org/10.2465/ganko.92.363.</p> <ul><li> <p>This paper explains prevalence of greenschist facies within the Tanzawa Mountain region, and gives the mineral composition of rocks from southern region of Tanzawa Mountains.</p> </li> </ul><p> </p> <p> </p> <p> </p> <p><br /><br /></p> Spatial Coverage Spatial characteristics of the resource. The samples were found in the Tanzawa Mountains of Kanto, Japan. Temporal Coverage Temporal characteristics of the resource. The Tanzawa Mountains were formed during the late Pliocene. Rock A physical material with a mineral composition. Unit Formation or other descriptive rock category (Zone V) Number of Thin Sections Number of thin sections associated with this sample 1 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Amphibolite, with some anthophyllite Alternative Title An alternative name for the resource. The distinction between titles and alternative titles is application-specific. Amphibolite Description An account of the resource Rock Sample: The sample is a dark greenish blue with brown layering. On one side of the sample there is a sand-like residue that is tan in color. The sample is aphanitic and possesses micro-folds. The sample appears to have experienced some banding and rippling foliations. There is some evidence of chemical weathering which is dark brown orange in color. There is some talc or ash-like residue on some sides. It has a silty texture. Thin Section: The sample is hypocrystalline with very fine sized glass crystals. There is evidence of high-grade metamorphism. It has very fined grained grains especially under the microscope. The sample experiences micro-banding, micro-veins and micro-fractures. -Quartz (70%) -Augite (30%) -Magnification at 4x/0.10 Scanning Electron Microscope: The tan rough filament on the outside of the sample is made up of calcium, silicon, aluminum, oxygen, carbon. There were small signals of iron, potassium, and magnesium as well. Date A point or period of time associated with an event in the lifecycle of the resource 1969 Contributor An entity responsible for making contributions to the resource Western Minerals, Inc. Is Part Of A related resource in which the described resource is physically or logically included. <a href="http://www.geosciencecollections.milne-library.org/collections/show/10">Tanzawa Mountains--Metamorphic Suite, Japan</a> Identifier An unambiguous reference to the resource within a given context TMJ-08 Spatial Coverage Spatial characteristics of the resource. Tanzawa Mountains, Japan - 0.15Km south of South Contact of Quartz Diorite (Zone V) Temporal Coverage Temporal characteristics of the resource. N/A Accrual Method The method by which items are added to a collection. Purchased from Western Minerals Inc. https://geosciencecollections.milne-library.org/files/original/3f31f1dfcd3ed97fc358deb9f0fe1f9a.jpg 64b663780c826153793a3190a8101a8d Omeka Image File The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files. Width 1936 Height 2592 Bit Depth 8 Channels 3 https://geosciencecollections.milne-library.org/files/original/bd6676c6979c82cd7b6a36a62328a5f6.jpg b527761d09e8ffd362c5e5c935f5e882 Omeka Image File The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files. Width 1936 Height 2592 Bit Depth 8 Channels 3 https://geosciencecollections.milne-library.org/files/original/c4aea3e531be0fb1b2e8df60d3241a74.JPG 4feac50d0a3cabb2d669f71fca5c6237 Omeka Image File The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files. Width 2560 Height 1920 Bit Depth 8 Channels 3 https://geosciencecollections.milne-library.org/files/original/032dec1213780516a144a99eeb3325b1.JPG 4d8b3fb5f15b71ea3c7ab4d238781385 Omeka Image File The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files. Width 2560 Height 1920 Bit Depth 8 Channels 3 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource (TMJ) Quartz-rich Metamorphic Suite -- Tanzawa Mountains, Kanto, Japan Description An account of the resource The Tanzawa Mountains in Japan were created in an arc-arc collision, when the Izu-Bonin-Mariana Arc was subducted beneath the Honshu Arc. This eventually accreted into the Tanzawa Mountains. The samples in this collection were found in and around the Tanzawa Mountains. The suite includes hornfels, amphibolites, quartz diorite, granophyres, and other basaltic rocks. The samples range from fine to coarse grained. An interesting feature found on many of the samples was a flow-like swirl of minerals in the thin section, visible in XPL. The quartz diorite samples had crystalline, powdery substances on them, which were analyzed using a Scanning Electron Microscope (SEM). The chemical compositions of the mentioned powdery substances were calcium, aluminum, silicon, and oxygen. Contributor An entity responsible for making contributions to the resource Western Minerals, Inc. References A related resource that is referenced, cited, or otherwise pointed to by the described resource. <p><strong>Start here:<br /></strong>Kawate, S., and Makoto, A., 1998, Petrogenesis of the Tanzawa plutonic complex, central Japan; exposed felsic middle crust of the Izu-Bonin-Mariana Arc: Island Arc, v. 7, p. 342-358, <br />link: http://dx.doi.org/10.1111/j.1440-1738.1998.00194.x.</p> <ul><li>This paper explains the chemical variation and high SiO_2Âpercentage of rocks within Tanzawa region, and describes in some depth the tectonic events that uplifted the Tanzawa Mountains.  </li> </ul><p><strong>Additional resources:<br /></strong></p> <p>Kitamura, K., Ishikawa, M., and Arima, M., 2003, Petrological model of the northern Izu-Bonin-Mariana Arc crust; constraints from high-pressure measurements of elastic wave velocities of the Tanzawa plutonic rocks, central Japan: Tectonophysics, v. 371, p.213-221, <br />link: http://dx.doi.org/10.1016/S0040-1951(03)00229-4</p> <ul><li> <p>This paper researchs the variations in acoustic impedance between different hornblende-gabbroic rocks from Tanzawa, Japan. </p> </li> </ul><p>Mikami, K., 1953, Metamorphic rocks in the southeastern margin of the Tanzawa quartz-diorite mass: Science Reports of Yokohama National University, v. 2, p. 34-49</p> <ul><li>This paper studies the chemical analysis of amphibolites resulting from contact metamorphism of the quartz-diorite mass in the Tanzawa Mountains.</li> </ul><p>Tani, K., Dunkley, D. J., Kimura, J., Wysoczanski, R.J., Yamada, K., and Tatsumi, Y.,2010, Syncollisional rapid granitic magma formation in an arc-arc collision zone: Evidence from the Tanzawa plutonic complex, Japan: Geology [Boulder], v. 38, p.215-218, <br />link: http://dx.doi.org/10.1130/G30526.1</p> <ul><li> <p>This paper discusses the collison that exposed the gabbroic rocks of the Tanzawa plutonic complex, and overall gives the reader an in-depth sturctural history of the Tanzawa Mountains. </p> </li> </ul><p>Yoshimura, T., 1997, Ca-Al silicates in low-grade metavolcanic rocks from southern Tanzawa Mountains, Central Japan: Journal of Mineralogy Petrology and Economic Geology,  v. 92, p. 363-378, <br />link: http://dx.doi.org/10.2465/ganko.92.363.</p> <ul><li> <p>This paper explains prevalence of greenschist facies within the Tanzawa Mountain region, and gives the mineral composition of rocks from southern region of Tanzawa Mountains.</p> </li> </ul><p> </p> <p> </p> <p> </p> <p><br /><br /></p> Spatial Coverage Spatial characteristics of the resource. The samples were found in the Tanzawa Mountains of Kanto, Japan. Temporal Coverage Temporal characteristics of the resource. The Tanzawa Mountains were formed during the late Pliocene. Rock A physical material with a mineral composition. Unit Formation or other descriptive rock category N/A Number of Thin Sections Number of thin sections associated with this sample 1 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Quartz Diorite Alternative Title An alternative name for the resource. The distinction between titles and alternative titles is application-specific. Plagioclase - Quartz - Diorite Description An account of the resource Rock Sample: The color of the crystals within the sample is half-white and half-black in color. The internal part of the sample feels rough, but the outside layer of the sample feels more like a fine-grained. This could be due to erosion on the exterior of the sample. There are dark and white crystals that are ≤1cm in length. There are some areas of small, light green crystal blotches. Minor chemical weathering has taken place on this sample. Thin Section: There is micro-twinnings within some of the plagioclase crystals. There are also some large fractures within some of the coarse-sized quartz. -Plagioclase (45%) -Quartz (25%) -Clinopyroxene (30%) -Magnification at 4x/0.10 Date A point or period of time associated with an event in the lifecycle of the resource 1969 Contributor An entity responsible for making contributions to the resource Western Minerals, Inc. Is Part Of A related resource in which the described resource is physically or logically included. <a href="http://www.geosciencecollections.milne-library.org/collections/show/10">Tanzawa Mountains--Metamorphic Suite, Japan</a> Identifier An unambiguous reference to the resource within a given context TMJ-07 Spatial Coverage Spatial characteristics of the resource. Tanzawa Mountains, Japan - North of South Contact Temporal Coverage Temporal characteristics of the resource. N/A Accrual Method The method by which items are added to a collection. Purchased from Western Minerals Inc. https://geosciencecollections.milne-library.org/files/original/79568562660551c4bb824c246c24519c.jpg ba84830b9dd5d78da3560fac4704db06 Omeka Image File The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files. Width 1936 Height 2592 Bit Depth 8 Channels 3 https://geosciencecollections.milne-library.org/files/original/862aa4566135bac8ee4430a0e3892193.JPG d0bcb4598b4385bca69495da338ba72b Omeka Image File The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files. Width 2560 Height 1920 Bit Depth 8 Channels 3 https://geosciencecollections.milne-library.org/files/original/070d973757a3f4e8b741e39c56b487da.JPG 6f5887160ab0986f63b6f458507a5141 Omeka Image File The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files. Width 2560 Height 1920 Bit Depth 8 Channels 3 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource (TMJ) Quartz-rich Metamorphic Suite -- Tanzawa Mountains, Kanto, Japan Description An account of the resource The Tanzawa Mountains in Japan were created in an arc-arc collision, when the Izu-Bonin-Mariana Arc was subducted beneath the Honshu Arc. This eventually accreted into the Tanzawa Mountains. The samples in this collection were found in and around the Tanzawa Mountains. The suite includes hornfels, amphibolites, quartz diorite, granophyres, and other basaltic rocks. The samples range from fine to coarse grained. An interesting feature found on many of the samples was a flow-like swirl of minerals in the thin section, visible in XPL. The quartz diorite samples had crystalline, powdery substances on them, which were analyzed using a Scanning Electron Microscope (SEM). The chemical compositions of the mentioned powdery substances were calcium, aluminum, silicon, and oxygen. Contributor An entity responsible for making contributions to the resource Western Minerals, Inc. References A related resource that is referenced, cited, or otherwise pointed to by the described resource. <p><strong>Start here:<br /></strong>Kawate, S., and Makoto, A., 1998, Petrogenesis of the Tanzawa plutonic complex, central Japan; exposed felsic middle crust of the Izu-Bonin-Mariana Arc: Island Arc, v. 7, p. 342-358, <br />link: http://dx.doi.org/10.1111/j.1440-1738.1998.00194.x.</p> <ul><li>This paper explains the chemical variation and high SiO_2Âpercentage of rocks within Tanzawa region, and describes in some depth the tectonic events that uplifted the Tanzawa Mountains.  </li> </ul><p><strong>Additional resources:<br /></strong></p> <p>Kitamura, K., Ishikawa, M., and Arima, M., 2003, Petrological model of the northern Izu-Bonin-Mariana Arc crust; constraints from high-pressure measurements of elastic wave velocities of the Tanzawa plutonic rocks, central Japan: Tectonophysics, v. 371, p.213-221, <br />link: http://dx.doi.org/10.1016/S0040-1951(03)00229-4</p> <ul><li> <p>This paper researchs the variations in acoustic impedance between different hornblende-gabbroic rocks from Tanzawa, Japan. </p> </li> </ul><p>Mikami, K., 1953, Metamorphic rocks in the southeastern margin of the Tanzawa quartz-diorite mass: Science Reports of Yokohama National University, v. 2, p. 34-49</p> <ul><li>This paper studies the chemical analysis of amphibolites resulting from contact metamorphism of the quartz-diorite mass in the Tanzawa Mountains.</li> </ul><p>Tani, K., Dunkley, D. J., Kimura, J., Wysoczanski, R.J., Yamada, K., and Tatsumi, Y.,2010, Syncollisional rapid granitic magma formation in an arc-arc collision zone: Evidence from the Tanzawa plutonic complex, Japan: Geology [Boulder], v. 38, p.215-218, <br />link: http://dx.doi.org/10.1130/G30526.1</p> <ul><li> <p>This paper discusses the collison that exposed the gabbroic rocks of the Tanzawa plutonic complex, and overall gives the reader an in-depth sturctural history of the Tanzawa Mountains. </p> </li> </ul><p>Yoshimura, T., 1997, Ca-Al silicates in low-grade metavolcanic rocks from southern Tanzawa Mountains, Central Japan: Journal of Mineralogy Petrology and Economic Geology,  v. 92, p. 363-378, <br />link: http://dx.doi.org/10.2465/ganko.92.363.</p> <ul><li> <p>This paper explains prevalence of greenschist facies within the Tanzawa Mountain region, and gives the mineral composition of rocks from southern region of Tanzawa Mountains.</p> </li> </ul><p> </p> <p> </p> <p> </p> <p><br /><br /></p> Spatial Coverage Spatial characteristics of the resource. The samples were found in the Tanzawa Mountains of Kanto, Japan. Temporal Coverage Temporal characteristics of the resource. The Tanzawa Mountains were formed during the late Pliocene. Rock A physical material with a mineral composition. Unit Formation or other descriptive rock category N/A Number of Thin Sections Number of thin sections associated with this sample 1 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Quartz Diorite Alternative Title An alternative name for the resource. The distinction between titles and alternative titles is application-specific. Plagioclase - Quartz - Diorite Description An account of the resource Rock Sample: The samples color has a white matrix with dark green phenocrysts. It is phaneritic. There is evidence of chemical weathering due to the presence of a dark brownish orange film on the sample--may be oxidation. There is a sandy smooth feeling film above the TMJ-6 tag. Phenocrysts are medium to coarse grained ranging from 0.1~1cm in length. It has a rough feel overall. Thin Section: There is tartan twinning on some irregular-shaped plagioclase. It is a large crystal with intergrowths and many micro-tartan twinning crystal within it. Many of the irregular shaped plagioclase have many fractures or scratches in them. There is some amphibole that intergrew into some augite. -Quartz (30%) -Augite (25%) -Amphibole (25%) -Plagioclase (20%) -Magnification at 4x/0.10 Date A point or period of time associated with an event in the lifecycle of the resource 1969 Contributor An entity responsible for making contributions to the resource Western Minerals, Inc. Is Part Of A related resource in which the described resource is physically or logically included. <a href="http://www.geosciencecollections.milne-library.org/collections/show/10">Tanzawa Mountains--Metamorphic Suite, Japan</a> Identifier An unambiguous reference to the resource within a given context TMJ-06 Spatial Coverage Spatial characteristics of the resource. Tanzawa Mountains, Japan - North of South Contact Temporal Coverage Temporal characteristics of the resource. N/A Accrual Method The method by which items are added to a collection. Purchased from Western Minerals Inc. https://geosciencecollections.milne-library.org/files/original/b61ee1ac1bb14783ff61c4944c107ab5.jpg 867d376d765ea11b84e287d4da40fdb1 Omeka Image File The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files. Width 1936 Height 2592 Bit Depth 8 Channels 3 https://geosciencecollections.milne-library.org/files/original/c249498f1bafb681b552803b2279d788.JPG 8b16b7b00e8e89c56e84a72dfe24f8f1 Omeka Image File The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files. Width 2560 Height 1920 Bit Depth 8 Channels 3 https://geosciencecollections.milne-library.org/files/original/c3e971fb7f1a71bee23da4adc5763243.JPG fc4203b2466b15dd1460ae243e814f50 Omeka Image File The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files. Width 2560 Height 1920 Bit Depth 8 Channels 3 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource (TMJ) Quartz-rich Metamorphic Suite -- Tanzawa Mountains, Kanto, Japan Description An account of the resource The Tanzawa Mountains in Japan were created in an arc-arc collision, when the Izu-Bonin-Mariana Arc was subducted beneath the Honshu Arc. This eventually accreted into the Tanzawa Mountains. The samples in this collection were found in and around the Tanzawa Mountains. The suite includes hornfels, amphibolites, quartz diorite, granophyres, and other basaltic rocks. The samples range from fine to coarse grained. An interesting feature found on many of the samples was a flow-like swirl of minerals in the thin section, visible in XPL. The quartz diorite samples had crystalline, powdery substances on them, which were analyzed using a Scanning Electron Microscope (SEM). The chemical compositions of the mentioned powdery substances were calcium, aluminum, silicon, and oxygen. Contributor An entity responsible for making contributions to the resource Western Minerals, Inc. References A related resource that is referenced, cited, or otherwise pointed to by the described resource. <p><strong>Start here:<br /></strong>Kawate, S., and Makoto, A., 1998, Petrogenesis of the Tanzawa plutonic complex, central Japan; exposed felsic middle crust of the Izu-Bonin-Mariana Arc: Island Arc, v. 7, p. 342-358, <br />link: http://dx.doi.org/10.1111/j.1440-1738.1998.00194.x.</p> <ul><li>This paper explains the chemical variation and high SiO_2Âpercentage of rocks within Tanzawa region, and describes in some depth the tectonic events that uplifted the Tanzawa Mountains.  </li> </ul><p><strong>Additional resources:<br /></strong></p> <p>Kitamura, K., Ishikawa, M., and Arima, M., 2003, Petrological model of the northern Izu-Bonin-Mariana Arc crust; constraints from high-pressure measurements of elastic wave velocities of the Tanzawa plutonic rocks, central Japan: Tectonophysics, v. 371, p.213-221, <br />link: http://dx.doi.org/10.1016/S0040-1951(03)00229-4</p> <ul><li> <p>This paper researchs the variations in acoustic impedance between different hornblende-gabbroic rocks from Tanzawa, Japan. </p> </li> </ul><p>Mikami, K., 1953, Metamorphic rocks in the southeastern margin of the Tanzawa quartz-diorite mass: Science Reports of Yokohama National University, v. 2, p. 34-49</p> <ul><li>This paper studies the chemical analysis of amphibolites resulting from contact metamorphism of the quartz-diorite mass in the Tanzawa Mountains.</li> </ul><p>Tani, K., Dunkley, D. J., Kimura, J., Wysoczanski, R.J., Yamada, K., and Tatsumi, Y.,2010, Syncollisional rapid granitic magma formation in an arc-arc collision zone: Evidence from the Tanzawa plutonic complex, Japan: Geology [Boulder], v. 38, p.215-218, <br />link: http://dx.doi.org/10.1130/G30526.1</p> <ul><li> <p>This paper discusses the collison that exposed the gabbroic rocks of the Tanzawa plutonic complex, and overall gives the reader an in-depth sturctural history of the Tanzawa Mountains. </p> </li> </ul><p>Yoshimura, T., 1997, Ca-Al silicates in low-grade metavolcanic rocks from southern Tanzawa Mountains, Central Japan: Journal of Mineralogy Petrology and Economic Geology,  v. 92, p. 363-378, <br />link: http://dx.doi.org/10.2465/ganko.92.363.</p> <ul><li> <p>This paper explains prevalence of greenschist facies within the Tanzawa Mountain region, and gives the mineral composition of rocks from southern region of Tanzawa Mountains.</p> </li> </ul><p> </p> <p> </p> <p> </p> <p><br /><br /></p> Spatial Coverage Spatial characteristics of the resource. The samples were found in the Tanzawa Mountains of Kanto, Japan. Temporal Coverage Temporal characteristics of the resource. The Tanzawa Mountains were formed during the late Pliocene. Rock A physical material with a mineral composition. Unit Formation or other descriptive rock category Vein Number of Thin Sections Number of thin sections associated with this sample 1 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Quartz Diorite with Laumontite Vein Alternative Title An alternative name for the resource. The distinction between titles and alternative titles is application-specific. Pyroxene Quartzite Description An account of the resource Rock Sample: The sample color has a cream colored matrix with dark green phenocrysts. The sample contains Laumontite, which is a mineral in the zeolite group. There is a white talc-like substance on upper part of sample. Phenocrysts are medium to coarse grained ranging from 1~8mm in length. There are multiple fractures that span the length of the sample. Some of the fractures are filled in with a white talc-like powder. The sample has an overall rough texture. Thin Section: Small fractures are evident within the thin section. There are some blue minerals that have a birefringence of 0.004, that are biaxial (-). It somewhat swirls. -Quartz (50-55%) -Amphibole (25%) -Augite (25%) -Magnification at 4x/0.10 Scanning Electron Microscope: The white talc like filling found in the fractures of the sample is made up of calcium, aluminum, silicon, and oxygen--this substance could be the Laumontite. Date A point or period of time associated with an event in the lifecycle of the resource 1969 Contributor An entity responsible for making contributions to the resource Western Minerals, Inc. Is Part Of A related resource in which the described resource is physically or logically included. <a href="http://www.geosciencecollections.milne-library.org/collections/show/10">Tanzawa Mountains--Metamorphic Suite, Japan</a> Identifier An unambiguous reference to the resource within a given context TMJ-05 Spatial Coverage Spatial characteristics of the resource. Tanzawa Mountains, Japan Temporal Coverage Temporal characteristics of the resource. N/A Accrual Method The method by which items are added to a collection. Purchased from Western Minerals Inc. https://geosciencecollections.milne-library.org/files/original/f570b5e3e3a0150eedfaf322e00e45bb.jpg 7bbdd48f79ae154c63f6e783754225aa Omeka Image File The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files. Width 2592 Height 1936 Bit Depth 8 Channels 3 https://geosciencecollections.milne-library.org/files/original/cb251bc93a4f430c0bd9a051b7b78a5b.jpg 6a7bfc020fe2ce80244cb5e0b2097789 Omeka Image File The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files. Width 2592 Height 1936 Bit Depth 8 Channels 3 https://geosciencecollections.milne-library.org/files/original/9481fd4aa0de981057ac3466980f8ba8.JPG e2df23fcbac8518719b6ec87c20cffe9 Omeka Image File The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files. Width 2560 Height 1920 Bit Depth 8 Channels 3 https://geosciencecollections.milne-library.org/files/original/449600bb9ba96360921dcb94bb675815.JPG 6f51b9909d9fb38915f8ec6359f52863 Omeka Image File The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files. Width 2560 Height 1920 Bit Depth 8 Channels 3 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource (TMJ) Quartz-rich Metamorphic Suite -- Tanzawa Mountains, Kanto, Japan Description An account of the resource The Tanzawa Mountains in Japan were created in an arc-arc collision, when the Izu-Bonin-Mariana Arc was subducted beneath the Honshu Arc. This eventually accreted into the Tanzawa Mountains. The samples in this collection were found in and around the Tanzawa Mountains. The suite includes hornfels, amphibolites, quartz diorite, granophyres, and other basaltic rocks. The samples range from fine to coarse grained. An interesting feature found on many of the samples was a flow-like swirl of minerals in the thin section, visible in XPL. The quartz diorite samples had crystalline, powdery substances on them, which were analyzed using a Scanning Electron Microscope (SEM). The chemical compositions of the mentioned powdery substances were calcium, aluminum, silicon, and oxygen. Contributor An entity responsible for making contributions to the resource Western Minerals, Inc. References A related resource that is referenced, cited, or otherwise pointed to by the described resource. <p><strong>Start here:<br /></strong>Kawate, S., and Makoto, A., 1998, Petrogenesis of the Tanzawa plutonic complex, central Japan; exposed felsic middle crust of the Izu-Bonin-Mariana Arc: Island Arc, v. 7, p. 342-358, <br />link: http://dx.doi.org/10.1111/j.1440-1738.1998.00194.x.</p> <ul><li>This paper explains the chemical variation and high SiO_2Âpercentage of rocks within Tanzawa region, and describes in some depth the tectonic events that uplifted the Tanzawa Mountains.  </li> </ul><p><strong>Additional resources:<br /></strong></p> <p>Kitamura, K., Ishikawa, M., and Arima, M., 2003, Petrological model of the northern Izu-Bonin-Mariana Arc crust; constraints from high-pressure measurements of elastic wave velocities of the Tanzawa plutonic rocks, central Japan: Tectonophysics, v. 371, p.213-221, <br />link: http://dx.doi.org/10.1016/S0040-1951(03)00229-4</p> <ul><li> <p>This paper researchs the variations in acoustic impedance between different hornblende-gabbroic rocks from Tanzawa, Japan. </p> </li> </ul><p>Mikami, K., 1953, Metamorphic rocks in the southeastern margin of the Tanzawa quartz-diorite mass: Science Reports of Yokohama National University, v. 2, p. 34-49</p> <ul><li>This paper studies the chemical analysis of amphibolites resulting from contact metamorphism of the quartz-diorite mass in the Tanzawa Mountains.</li> </ul><p>Tani, K., Dunkley, D. J., Kimura, J., Wysoczanski, R.J., Yamada, K., and Tatsumi, Y.,2010, Syncollisional rapid granitic magma formation in an arc-arc collision zone: Evidence from the Tanzawa plutonic complex, Japan: Geology [Boulder], v. 38, p.215-218, <br />link: http://dx.doi.org/10.1130/G30526.1</p> <ul><li> <p>This paper discusses the collison that exposed the gabbroic rocks of the Tanzawa plutonic complex, and overall gives the reader an in-depth sturctural history of the Tanzawa Mountains. </p> </li> </ul><p>Yoshimura, T., 1997, Ca-Al silicates in low-grade metavolcanic rocks from southern Tanzawa Mountains, Central Japan: Journal of Mineralogy Petrology and Economic Geology,  v. 92, p. 363-378, <br />link: http://dx.doi.org/10.2465/ganko.92.363.</p> <ul><li> <p>This paper explains prevalence of greenschist facies within the Tanzawa Mountain region, and gives the mineral composition of rocks from southern region of Tanzawa Mountains.</p> </li> </ul><p> </p> <p> </p> <p> </p> <p><br /><br /></p> Spatial Coverage Spatial characteristics of the resource. The samples were found in the Tanzawa Mountains of Kanto, Japan. Temporal Coverage Temporal characteristics of the resource. The Tanzawa Mountains were formed during the late Pliocene. Rock A physical material with a mineral composition. Unit Formation or other descriptive rock category N/A Number of Thin Sections Number of thin sections associated with this sample 1 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Quartz Diorite Alternative Title An alternative name for the resource. The distinction between titles and alternative titles is application-specific. Biotite - Plagioclase - Quartzite Description An account of the resource Rock Sample: The sample has black to green phenocrysts with a greenish white matrix. It has phaneritic grains with a aphanetic matrix. Phenocrysts are coarse to fined grained ranging from 0.1~1cm in size. There is a chalk like powder on the outside of the sample (white). There are deep fractures running to the center of the sample. It is likely that the sample underwent chemical weathering by oxidation. The chemical weathering is evident due to the orange brown tint. Overall the sample has a smooth weathered outside with rough gritty inside. Thin Section: Minerals are either medium in size. All the minerals seem to have intergrown in the quartz crystals. -Quartz (50%) -Plagioclase (20%) -Biotite (15%) -Hornblende (15%) -Magnification at 4x/0.10 Date A point or period of time associated with an event in the lifecycle of the resource 1969 Contributor An entity responsible for making contributions to the resource Western Minerals, Inc. Is Part Of A related resource in which the described resource is physically or logically included. <a href="http://www.geosciencecollections.milne-library.org/collections/show/10">Tanzawa Mountains--Metamorphic Suite, Japan</a> Identifier An unambiguous reference to the resource within a given context TMJ-04 Spatial Coverage Spatial characteristics of the resource. Tanzawa Mountains, Japan South of North Contact Temporal Coverage Temporal characteristics of the resource. N/A Accrual Method The method by which items are added to a collection. Purchased from Western Minerals Inc. https://geosciencecollections.milne-library.org/files/original/6c0a551de7130bbd57097fa167272007.jpg 8e3f896cd1b4fb5e247e2f92c16b51bc Omeka Image File The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files. Width 2592 Height 1936 Bit Depth 8 Channels 3 https://geosciencecollections.milne-library.org/files/original/602c1ec652fb196f5203f09e4dad1a85.JPG f5f26d89a55c7f7911a3dda11b81d5bf Omeka Image File The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files. Width 2560 Height 1920 Bit Depth 8 Channels 3 https://geosciencecollections.milne-library.org/files/original/a815ed51b771ca53bdac768f23190b50.JPG 82f0252fa93d1259fa42cb246f7b033d Omeka Image File The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files. Width 2560 Height 1920 Bit Depth 8 Channels 3 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource (TMJ) Quartz-rich Metamorphic Suite -- Tanzawa Mountains, Kanto, Japan Description An account of the resource The Tanzawa Mountains in Japan were created in an arc-arc collision, when the Izu-Bonin-Mariana Arc was subducted beneath the Honshu Arc. This eventually accreted into the Tanzawa Mountains. The samples in this collection were found in and around the Tanzawa Mountains. The suite includes hornfels, amphibolites, quartz diorite, granophyres, and other basaltic rocks. The samples range from fine to coarse grained. An interesting feature found on many of the samples was a flow-like swirl of minerals in the thin section, visible in XPL. The quartz diorite samples had crystalline, powdery substances on them, which were analyzed using a Scanning Electron Microscope (SEM). The chemical compositions of the mentioned powdery substances were calcium, aluminum, silicon, and oxygen. Contributor An entity responsible for making contributions to the resource Western Minerals, Inc. References A related resource that is referenced, cited, or otherwise pointed to by the described resource. <p><strong>Start here:<br /></strong>Kawate, S., and Makoto, A., 1998, Petrogenesis of the Tanzawa plutonic complex, central Japan; exposed felsic middle crust of the Izu-Bonin-Mariana Arc: Island Arc, v. 7, p. 342-358, <br />link: http://dx.doi.org/10.1111/j.1440-1738.1998.00194.x.</p> <ul><li>This paper explains the chemical variation and high SiO_2Âpercentage of rocks within Tanzawa region, and describes in some depth the tectonic events that uplifted the Tanzawa Mountains.  </li> </ul><p><strong>Additional resources:<br /></strong></p> <p>Kitamura, K., Ishikawa, M., and Arima, M., 2003, Petrological model of the northern Izu-Bonin-Mariana Arc crust; constraints from high-pressure measurements of elastic wave velocities of the Tanzawa plutonic rocks, central Japan: Tectonophysics, v. 371, p.213-221, <br />link: http://dx.doi.org/10.1016/S0040-1951(03)00229-4</p> <ul><li> <p>This paper researchs the variations in acoustic impedance between different hornblende-gabbroic rocks from Tanzawa, Japan. </p> </li> </ul><p>Mikami, K., 1953, Metamorphic rocks in the southeastern margin of the Tanzawa quartz-diorite mass: Science Reports of Yokohama National University, v. 2, p. 34-49</p> <ul><li>This paper studies the chemical analysis of amphibolites resulting from contact metamorphism of the quartz-diorite mass in the Tanzawa Mountains.</li> </ul><p>Tani, K., Dunkley, D. J., Kimura, J., Wysoczanski, R.J., Yamada, K., and Tatsumi, Y.,2010, Syncollisional rapid granitic magma formation in an arc-arc collision zone: Evidence from the Tanzawa plutonic complex, Japan: Geology [Boulder], v. 38, p.215-218, <br />link: http://dx.doi.org/10.1130/G30526.1</p> <ul><li> <p>This paper discusses the collison that exposed the gabbroic rocks of the Tanzawa plutonic complex, and overall gives the reader an in-depth sturctural history of the Tanzawa Mountains. </p> </li> </ul><p>Yoshimura, T., 1997, Ca-Al silicates in low-grade metavolcanic rocks from southern Tanzawa Mountains, Central Japan: Journal of Mineralogy Petrology and Economic Geology,  v. 92, p. 363-378, <br />link: http://dx.doi.org/10.2465/ganko.92.363.</p> <ul><li> <p>This paper explains prevalence of greenschist facies within the Tanzawa Mountain region, and gives the mineral composition of rocks from southern region of Tanzawa Mountains.</p> </li> </ul><p> </p> <p> </p> <p> </p> <p><br /><br /></p> Spatial Coverage Spatial characteristics of the resource. The samples were found in the Tanzawa Mountains of Kanto, Japan. Temporal Coverage Temporal characteristics of the resource. The Tanzawa Mountains were formed during the late Pliocene. Rock A physical material with a mineral composition. Unit Formation or other descriptive rock category Dike cutting hornfels at locality 1 Number of Thin Sections Number of thin sections associated with this sample 1 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Hornblende Porphyrite Dike Alternative Title An alternative name for the resource. The distinction between titles and alternative titles is application-specific. Hornblende Andesite Description An account of the resource Rock Sample: The sample is pinkish gray with brown to green phenocrysts. There are fine-grained to medium-grained phenocrysts (0.5~5mm in length). There is a dark-brown to orange coating, which is evidence of chemical weathering due to oxidation. The matrix is white. The sample has an overall rough texture. Thin Section: There are grains of various sizes. There is major mixing of plagioclase and hornblende in one section where the hornblende is intergrown into the plagioclase crystals. -Matrix is Quartz (50%) -Hornblende (20%) -Garnet (10%) -Plagioclase (10%) -Biotite ( 10%) -Magnification at 4x/0.10 Date A point or period of time associated with an event in the lifecycle of the resource 1969 Contributor An entity responsible for making contributions to the resource Western Minerals, Inc. Is Part Of A related resource in which the described resource is physically or logically included. <a href="http://www.geosciencecollections.milne-library.org/collections/show/10">Tanzawa Mountains--Metamorphic Suite, Japan</a> Identifier An unambiguous reference to the resource within a given context TMJ-03 Spatial Coverage Spatial characteristics of the resource. Tanzawa Mountains, Japan Locality 1 Temporal Coverage Temporal characteristics of the resource. N/A Accrual Method The method by which items are added to a collection. Purchased from Western Minerals Inc. https://geosciencecollections.milne-library.org/files/original/da12a21cb3f9fd9fe2f47cb5905dfa8c.jpg edc2ab01e6290e40c833251dce202e65 Omeka Image File The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files. Width 2592 Height 1936 Bit Depth 8 Channels 3 https://geosciencecollections.milne-library.org/files/original/528c37da35bff5043baaf943740b961c.jpg 1d42e8a131ddc35e96af6b2e5b1a119e Omeka Image File The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files. Width 2592 Height 1936 Bit Depth 8 Channels 3 https://geosciencecollections.milne-library.org/files/original/74f263910fca2ec87a34092e63053d0f.JPG 0edeac85f29cf52cdf49d926db5c77d7 Omeka Image File The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files. Width 2560 Height 1920 Bit Depth 8 Channels 3 https://geosciencecollections.milne-library.org/files/original/9a9ff0871f4a5ef27374d0de0b3c0eea.JPG 1512ad4d0e8f90b87abd2bef3584038b Omeka Image File The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files. Width 2560 Height 1920 Bit Depth 8 Channels 3 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource (TMJ) Quartz-rich Metamorphic Suite -- Tanzawa Mountains, Kanto, Japan Description An account of the resource The Tanzawa Mountains in Japan were created in an arc-arc collision, when the Izu-Bonin-Mariana Arc was subducted beneath the Honshu Arc. This eventually accreted into the Tanzawa Mountains. The samples in this collection were found in and around the Tanzawa Mountains. The suite includes hornfels, amphibolites, quartz diorite, granophyres, and other basaltic rocks. The samples range from fine to coarse grained. An interesting feature found on many of the samples was a flow-like swirl of minerals in the thin section, visible in XPL. The quartz diorite samples had crystalline, powdery substances on them, which were analyzed using a Scanning Electron Microscope (SEM). The chemical compositions of the mentioned powdery substances were calcium, aluminum, silicon, and oxygen. Contributor An entity responsible for making contributions to the resource Western Minerals, Inc. References A related resource that is referenced, cited, or otherwise pointed to by the described resource. <p><strong>Start here:<br /></strong>Kawate, S., and Makoto, A., 1998, Petrogenesis of the Tanzawa plutonic complex, central Japan; exposed felsic middle crust of the Izu-Bonin-Mariana Arc: Island Arc, v. 7, p. 342-358, <br />link: http://dx.doi.org/10.1111/j.1440-1738.1998.00194.x.</p> <ul><li>This paper explains the chemical variation and high SiO_2Âpercentage of rocks within Tanzawa region, and describes in some depth the tectonic events that uplifted the Tanzawa Mountains.  </li> </ul><p><strong>Additional resources:<br /></strong></p> <p>Kitamura, K., Ishikawa, M., and Arima, M., 2003, Petrological model of the northern Izu-Bonin-Mariana Arc crust; constraints from high-pressure measurements of elastic wave velocities of the Tanzawa plutonic rocks, central Japan: Tectonophysics, v. 371, p.213-221, <br />link: http://dx.doi.org/10.1016/S0040-1951(03)00229-4</p> <ul><li> <p>This paper researchs the variations in acoustic impedance between different hornblende-gabbroic rocks from Tanzawa, Japan. </p> </li> </ul><p>Mikami, K., 1953, Metamorphic rocks in the southeastern margin of the Tanzawa quartz-diorite mass: Science Reports of Yokohama National University, v. 2, p. 34-49</p> <ul><li>This paper studies the chemical analysis of amphibolites resulting from contact metamorphism of the quartz-diorite mass in the Tanzawa Mountains.</li> </ul><p>Tani, K., Dunkley, D. J., Kimura, J., Wysoczanski, R.J., Yamada, K., and Tatsumi, Y.,2010, Syncollisional rapid granitic magma formation in an arc-arc collision zone: Evidence from the Tanzawa plutonic complex, Japan: Geology [Boulder], v. 38, p.215-218, <br />link: http://dx.doi.org/10.1130/G30526.1</p> <ul><li> <p>This paper discusses the collison that exposed the gabbroic rocks of the Tanzawa plutonic complex, and overall gives the reader an in-depth sturctural history of the Tanzawa Mountains. </p> </li> </ul><p>Yoshimura, T., 1997, Ca-Al silicates in low-grade metavolcanic rocks from southern Tanzawa Mountains, Central Japan: Journal of Mineralogy Petrology and Economic Geology,  v. 92, p. 363-378, <br />link: http://dx.doi.org/10.2465/ganko.92.363.</p> <ul><li> <p>This paper explains prevalence of greenschist facies within the Tanzawa Mountain region, and gives the mineral composition of rocks from southern region of Tanzawa Mountains.</p> </li> </ul><p> </p> <p> </p> <p> </p> <p><br /><br /></p> Spatial Coverage Spatial characteristics of the resource. The samples were found in the Tanzawa Mountains of Kanto, Japan. Temporal Coverage Temporal characteristics of the resource. The Tanzawa Mountains were formed during the late Pliocene. Rock A physical material with a mineral composition. Unit Formation or other descriptive rock category (Zone V) Number of Thin Sections Number of thin sections associated with this sample 1 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Hornfels, Dark Brown Alternative Title An alternative name for the resource. The distinction between titles and alternative titles is application-specific. Hornfels Description An account of the resource Rock Sample: The sample is fine-grained, and the majority of the rock is dark grey in color. There is a 2.5x4cm white crystal formation on the upper edge of the sample. There are fractures running through the sample. There is some chemical weathering found on the outside of the sample. The chemical weathering is rust-like in color, likely indicating an oxygen and iron reaction. The sample is densely spotted with hornfels. It has a smooth texture overall. Thin Section: There are some micro-fractures with clusters of plagioclase (1~5mm in diameter). There is a single euhedral garnet crystal that is enclosed in another mineral. There are some inter growths of the matrix within some of the larger plagioclase samples. -Cordierite (50%) -Plagioclase (40%) -Quartz (9%) -Other/matrix (<1%) -Magnification at 4x/0.10 Date A point or period of time associated with an event in the lifecycle of the resource 1969 Contributor An entity responsible for making contributions to the resource Western Minerals, Inc. Is Part Of A related resource in which the described resource is physically or logically included. <a href="http://www.geosciencecollections.milne-library.org/collections/show/10">Tanzawa Mountains--Metamorphic Suite, Japan</a> Identifier An unambiguous reference to the resource within a given context TMJ-2 Spatial Coverage Spatial characteristics of the resource. Tanzawa Mountains, Japan (Zone V) North Contact of Quartz Diorite Temporal Coverage Temporal characteristics of the resource. N/A Accrual Method The method by which items are added to a collection. Purchased from Western Minerals Inc. https://geosciencecollections.milne-library.org/files/original/8f0983d1919b1ea4d3ae5c6aa3992fe4.jpg 12afcbc96277cd307adf20b436d0b886 Omeka Image File The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files. Width 2592 Height 1936 Bit Depth 8 Channels 3 https://geosciencecollections.milne-library.org/files/original/9287b60be05af4a79910cbfae81348ab.JPG 3193b6bac5cc420a102bdc03cede1916 Omeka Image File The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files. Width 2592 Height 1936 Bit Depth 8 Channels 3 https://geosciencecollections.milne-library.org/files/original/e2b318b8c3357a053faf54d741dc1bfe.JPG 6d7f577ded372bb6c2420e992993d1b5 Omeka Image File The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files. Width 2592 Height 1936 Bit Depth 8 Channels 3 https://geosciencecollections.milne-library.org/files/original/c35f83568939969c3477a09b5e999ffd.JPG 9702599b3d4d2f87903a061f8c43dfac Omeka Image File The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files. Width 2560 Height 1920 Bit Depth 8 Channels 3 https://geosciencecollections.milne-library.org/files/original/b185a31e659bf8c07860d9ba58a2af6c.JPG 7b6ebf769663be22a9ef4e4ccfb261b5 Omeka Image File The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files. Width 2560 Height 1920 Bit Depth 8 Channels 3 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource (TMJ) Quartz-rich Metamorphic Suite -- Tanzawa Mountains, Kanto, Japan Description An account of the resource The Tanzawa Mountains in Japan were created in an arc-arc collision, when the Izu-Bonin-Mariana Arc was subducted beneath the Honshu Arc. This eventually accreted into the Tanzawa Mountains. The samples in this collection were found in and around the Tanzawa Mountains. The suite includes hornfels, amphibolites, quartz diorite, granophyres, and other basaltic rocks. The samples range from fine to coarse grained. An interesting feature found on many of the samples was a flow-like swirl of minerals in the thin section, visible in XPL. The quartz diorite samples had crystalline, powdery substances on them, which were analyzed using a Scanning Electron Microscope (SEM). The chemical compositions of the mentioned powdery substances were calcium, aluminum, silicon, and oxygen. Contributor An entity responsible for making contributions to the resource Western Minerals, Inc. References A related resource that is referenced, cited, or otherwise pointed to by the described resource. <p><strong>Start here:<br /></strong>Kawate, S., and Makoto, A., 1998, Petrogenesis of the Tanzawa plutonic complex, central Japan; exposed felsic middle crust of the Izu-Bonin-Mariana Arc: Island Arc, v. 7, p. 342-358, <br />link: http://dx.doi.org/10.1111/j.1440-1738.1998.00194.x.</p> <ul><li>This paper explains the chemical variation and high SiO_2Âpercentage of rocks within Tanzawa region, and describes in some depth the tectonic events that uplifted the Tanzawa Mountains.  </li> </ul><p><strong>Additional resources:<br /></strong></p> <p>Kitamura, K., Ishikawa, M., and Arima, M., 2003, Petrological model of the northern Izu-Bonin-Mariana Arc crust; constraints from high-pressure measurements of elastic wave velocities of the Tanzawa plutonic rocks, central Japan: Tectonophysics, v. 371, p.213-221, <br />link: http://dx.doi.org/10.1016/S0040-1951(03)00229-4</p> <ul><li> <p>This paper researchs the variations in acoustic impedance between different hornblende-gabbroic rocks from Tanzawa, Japan. </p> </li> </ul><p>Mikami, K., 1953, Metamorphic rocks in the southeastern margin of the Tanzawa quartz-diorite mass: Science Reports of Yokohama National University, v. 2, p. 34-49</p> <ul><li>This paper studies the chemical analysis of amphibolites resulting from contact metamorphism of the quartz-diorite mass in the Tanzawa Mountains.</li> </ul><p>Tani, K., Dunkley, D. J., Kimura, J., Wysoczanski, R.J., Yamada, K., and Tatsumi, Y.,2010, Syncollisional rapid granitic magma formation in an arc-arc collision zone: Evidence from the Tanzawa plutonic complex, Japan: Geology [Boulder], v. 38, p.215-218, <br />link: http://dx.doi.org/10.1130/G30526.1</p> <ul><li> <p>This paper discusses the collison that exposed the gabbroic rocks of the Tanzawa plutonic complex, and overall gives the reader an in-depth sturctural history of the Tanzawa Mountains. </p> </li> </ul><p>Yoshimura, T., 1997, Ca-Al silicates in low-grade metavolcanic rocks from southern Tanzawa Mountains, Central Japan: Journal of Mineralogy Petrology and Economic Geology,  v. 92, p. 363-378, <br />link: http://dx.doi.org/10.2465/ganko.92.363.</p> <ul><li> <p>This paper explains prevalence of greenschist facies within the Tanzawa Mountain region, and gives the mineral composition of rocks from southern region of Tanzawa Mountains.</p> </li> </ul><p> </p> <p> </p> <p> </p> <p><br /><br /></p> Spatial Coverage Spatial characteristics of the resource. The samples were found in the Tanzawa Mountains of Kanto, Japan. Temporal Coverage Temporal characteristics of the resource. The Tanzawa Mountains were formed during the late Pliocene. Rock A physical material with a mineral composition. Unit Formation or other descriptive rock category (Zone V) Number of Thin Sections Number of thin sections associated with this sample 1 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Hornfels, Green Diopside bearing Alternative Title An alternative name for the resource. The distinction between titles and alternative titles is application-specific. Slate - Hornfels - Whetstone Description An account of the resource Rock Sample: The sample is metamorphic. It is green to light-green in color. There are very course grained tabular zones of metamorphism (12x4cm) and light to dark layering with non-uniform shapes and patterns. The grains are aphanitic. The majority of the sample has an overall smooth texture. Thin Section: The thin section has small vein-like fractures filled in by larger quartz crystals.There are some fractures that are not filled in. It is Quartz-rich, though the size of the quartz crystals are small. -Quartz (80%) -Pyroxene (20%) -Magnification at 4x/0.10 Date A point or period of time associated with an event in the lifecycle of the resource 1969 Contributor An entity responsible for making contributions to the resource Western Minerals, Inc. Is Part Of A related resource in which the described resource is physically or logically included. <a href="http://www.geosciencecollections.milne-library.org/collections/show/10">Tanzawa Mountains--Metamorphic Suite, Japan</a> Identifier An unambiguous reference to the resource within a given context TMJ-1 Spatial Coverage Spatial characteristics of the resource. Tanzawa Mountains, Japan South Portal of tunnel (Zone V) Temporal Coverage Temporal characteristics of the resource. N/A Accrual Method The method by which items are added to a collection. Purchased from Western Minerals Inc. https://geosciencecollections.milne-library.org/files/original/22de553fea23395b7ffe2c8fca337c27.pdf 1ca739b41d7f955fcb8d754b089d26f6 https://geosciencecollections.milne-library.org/files/original/87ed33dc965634be619006d36b244ae7.JPG 4165d796609592b55be5b867c687f2b2 Omeka Image File The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files. Width 800 Height 600 Bit Depth 8 Channels 3 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource (TMJ) Quartz-rich Metamorphic Suite -- Tanzawa Mountains, Kanto, Japan Description An account of the resource The Tanzawa Mountains in Japan were created in an arc-arc collision, when the Izu-Bonin-Mariana Arc was subducted beneath the Honshu Arc. This eventually accreted into the Tanzawa Mountains. The samples in this collection were found in and around the Tanzawa Mountains. The suite includes hornfels, amphibolites, quartz diorite, granophyres, and other basaltic rocks. The samples range from fine to coarse grained. An interesting feature found on many of the samples was a flow-like swirl of minerals in the thin section, visible in XPL. The quartz diorite samples had crystalline, powdery substances on them, which were analyzed using a Scanning Electron Microscope (SEM). The chemical compositions of the mentioned powdery substances were calcium, aluminum, silicon, and oxygen. Contributor An entity responsible for making contributions to the resource Western Minerals, Inc. References A related resource that is referenced, cited, or otherwise pointed to by the described resource. <p><strong>Start here:<br /></strong>Kawate, S., and Makoto, A., 1998, Petrogenesis of the Tanzawa plutonic complex, central Japan; exposed felsic middle crust of the Izu-Bonin-Mariana Arc: Island Arc, v. 7, p. 342-358, <br />link: http://dx.doi.org/10.1111/j.1440-1738.1998.00194.x.</p> <ul><li>This paper explains the chemical variation and high SiO_2Âpercentage of rocks within Tanzawa region, and describes in some depth the tectonic events that uplifted the Tanzawa Mountains.  </li> </ul><p><strong>Additional resources:<br /></strong></p> <p>Kitamura, K., Ishikawa, M., and Arima, M., 2003, Petrological model of the northern Izu-Bonin-Mariana Arc crust; constraints from high-pressure measurements of elastic wave velocities of the Tanzawa plutonic rocks, central Japan: Tectonophysics, v. 371, p.213-221, <br />link: http://dx.doi.org/10.1016/S0040-1951(03)00229-4</p> <ul><li> <p>This paper researchs the variations in acoustic impedance between different hornblende-gabbroic rocks from Tanzawa, Japan. </p> </li> </ul><p>Mikami, K., 1953, Metamorphic rocks in the southeastern margin of the Tanzawa quartz-diorite mass: Science Reports of Yokohama National University, v. 2, p. 34-49</p> <ul><li>This paper studies the chemical analysis of amphibolites resulting from contact metamorphism of the quartz-diorite mass in the Tanzawa Mountains.</li> </ul><p>Tani, K., Dunkley, D. J., Kimura, J., Wysoczanski, R.J., Yamada, K., and Tatsumi, Y.,2010, Syncollisional rapid granitic magma formation in an arc-arc collision zone: Evidence from the Tanzawa plutonic complex, Japan: Geology [Boulder], v. 38, p.215-218, <br />link: http://dx.doi.org/10.1130/G30526.1</p> <ul><li> <p>This paper discusses the collison that exposed the gabbroic rocks of the Tanzawa plutonic complex, and overall gives the reader an in-depth sturctural history of the Tanzawa Mountains. </p> </li> </ul><p>Yoshimura, T., 1997, Ca-Al silicates in low-grade metavolcanic rocks from southern Tanzawa Mountains, Central Japan: Journal of Mineralogy Petrology and Economic Geology,  v. 92, p. 363-378, <br />link: http://dx.doi.org/10.2465/ganko.92.363.</p> <ul><li> <p>This paper explains prevalence of greenschist facies within the Tanzawa Mountain region, and gives the mineral composition of rocks from southern region of Tanzawa Mountains.</p> </li> </ul><p> </p> <p> </p> <p> </p> <p><br /><br /></p> Spatial Coverage Spatial characteristics of the resource. The samples were found in the Tanzawa Mountains of Kanto, Japan. Temporal Coverage Temporal characteristics of the resource. The Tanzawa Mountains were formed during the late Pliocene. Document A resource containing textual data. Note that facsimiles or images of texts are still of the genre text. Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Quartz-rich Metamorphic Suite--Tanzawa Mountains, Kanto Japan Western Minerals Supplementary Information Alternative Title An alternative name for the resource. The distinction between titles and alternative titles is application-specific. TMJ Description An account of the resource Image is of the North Side of the Tanzawa Mountains (Wikipedia) Has Format A related resource that is substantially the same as the pre-existing described resource, but in another format. PDF Has Part A related resource that is included either physically or logically in the described resource. <a href="http://www.geosciencecollections.milne-library.org/items/browse?search=&amp;advanced%5B0%5D%5Belement_id%5D=&amp;advanced%5B0%5D%5Btype%5D=&amp;advanced%5B0%5D%5Bterms%5D=&amp;range=&amp;public=&amp;featured=&amp;collection=10&amp;type=15&amp;user=&amp;tags=&amp;geolocation-address=&amp;geolocation-latitude=&amp;geolocation-longitude=&amp;geolocation-radius=10&amp;geolocation-radius=10&amp;exhibit=&amp;submit_search=Search+%E2%86%92">Tanzawa Mountains--Metamorphic Suite,  Japan</a> Identifier An unambiguous reference to the resource within a given context TMJ-suite