1
20
17
-
https://geosciencecollections.milne-library.org/files/original/a5187a6cc42cb138bfabb9630a8989a0.pdf
497f3a8671c6ecbbbb6d851258d07295
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
(DUCO) Barrovian Metamorphic Sequence -- Dutchess County, New York
Contributor
An entity responsible for making contributions to the resource
Western Minerals, Inc.
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals, Inc.
Description
An account of the resource
A classic example of Barrovian-type metamorphism in Dutchess County, NY associated with the Taconic orogeny. A Barrovian metamorphic sequence displays gradual pressure and temperature increase along the metamorphic gradient, and occurs during regional metamorphism. These zones of pressure and temperature increase are recognizable by the characteristic minerals that accompany them. Dutchess County, NY contains an unusually complete sequence.
This collection contains metamorphic rocks from chlorite grade to sillimanite grade in a tight spatial window which records the regional metamorphic gradient increasing from WNW to ESE. This collection also contains some rocks that mirror the protoliths of the schists and quartzites of the sequence (shales and graywacke).
Date
A point or period of time associated with an event in the lifecycle of the resource
1970
Spatial Coverage
Spatial characteristics of the resource.
Dutchess County, New York
Temporal Coverage
Temporal characteristics of the resource.
450-430 Ma
References
A related resource that is referenced, cited, or otherwise pointed to by the described resource.
<strong>Start Here:</strong> <br />Vollmer, F. W., and Walker, J., 2009, The classic Barrovian metamorphic sequence of Dutchess County and its structural and stratigraphic context in the Taconic Orogeny. In Guidebook—New York State Geological Association Meeting, v. 81, p. 11-1. <br /><a href="http://www2.newpaltz.edu/~vollmerf/papers/Vollmer_and_Walker_2009_NYSGA.pdf">http://www2.newpaltz.edu/~vollmerf/papers/Vollmer_and_Walker_2009_NYSGA.pdf</a> (accessed March 15th, 2015)<br /><br /><ul><li>A useful field trip guide across the Barrovian metamorphic sequence of Dutchess county. Good general introduction to the geology of the area.</li>
</ul><strong>Additional Resources:</strong><br />Whitney, D.L., Mechum, T.A., Keuhner, S.M., and Dilek, Y.R., 1996, Progressive metamorphism of pelitic rocks from protolith to granulite facies, Dutchess County, New York, USA: constraints on the timing of fluid infiltration during regional metamorphism, Journal of Metamorphic Geology, v. 14, p. 163-181. <a href="http://dx.doi.org/">http://dx.doi.org/<span>10.1046/j.1525-1314.1996.05836.x</span></a><br /><br /><ul><li>A fairly general look at the progressive metamorphism in Dutchess County by one of the foremost workers in the area.</li>
</ul><br />Knopf, E.B., 1927, Some recent work in the Taconic area: American Journal of Science, v. 41, p. 42-458. <a href="http://dx.doi.org/">http://dx.doi.org/<span>10.2475/ajs.s5-14.84.429</span></a><br /><br /><ul><li>One of the first articles to describle the Dutchess County rocks as a "classic" Barrovian sequence. </li>
</ul><br />Ghent, E.D., Stout, M.Z., 1981, Geobarometry and geothermometry of plagioclase-biotite-garnet-muscovite assemblages, Contributions to Mineralogy and Petrology, v. 76, p. 92-97. <a href="http://dx.doi.org/">http://dx.doi.org/<span>10.1007/BF00373688</span></a><br /><br /><br /><ul><li>Work constraining the pressure and temperature paths of metamorphism in the sequence through equilibrium assemblages. This work was found to be in agreement with other equilibrium assemblage PT paths.</li>
</ul><br />Whitney, D.L., Mechum, T.A., Dilek, Y.R., and Keuhner, S.M., 1996, Modification of garnet during regional metamorphism in garnet through sillimanite-zone rocks, Dutchess County, New York, American Mineralogist, v. 81, p. 696-705. <a href="http://www.minsocam.org/MSA/AmMin/TOC/Articles_Free/1996/Whitney_p696-705_96.pdf"> http://www.minsocam.org/MSA/AmMin/TOC/Articles_Free/1996/Whitney_p696-705_96.pdf</a><br /><br /><ul><li>Work by Whitney on changes in PTX conditions leading to modification of garnet in the metamorphic sequence. Garnet is widely distributed through the sequence, which makes it a useful marker for tracking these changes.</li>
</ul>
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
Barrovian Metamorphic Sequence--Dutchess County, NY Western Minerals Supplementary Information
Description
An account of the resource
OCR PDF of supplemental information for the Barrovian Metamorphic Sequence--Dutchess County, NY
Date
A point or period of time associated with an event in the lifecycle of the resource
1980
Identifier
An unambiguous reference to the resource within a given context
DUCO 1-16
Spatial Coverage
Spatial characteristics of the resource.
Dutchess County, NY
Temporal Coverage
Temporal characteristics of the resource.
450-430 Ma
Publisher
An entity responsible for making the resource available
Western Minerals, Inc.
Format
The file format, physical medium, or dimensions of the resource
PDF
-
https://geosciencecollections.milne-library.org/files/original/0651d0debe18dfd2bbbca5819b92157c.JPG
9bb6277372be470a224aecb05945aea2
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
DUCO-16 hand sample of marble
https://geosciencecollections.milne-library.org/files/original/6764b65268f7b55b140c3904ee0d12b5.png
edd74634e311c810778b6759fbec86bb
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
(DUCO) Barrovian Metamorphic Sequence -- Dutchess County, New York
Contributor
An entity responsible for making contributions to the resource
Western Minerals, Inc.
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals, Inc.
Description
An account of the resource
A classic example of Barrovian-type metamorphism in Dutchess County, NY associated with the Taconic orogeny. A Barrovian metamorphic sequence displays gradual pressure and temperature increase along the metamorphic gradient, and occurs during regional metamorphism. These zones of pressure and temperature increase are recognizable by the characteristic minerals that accompany them. Dutchess County, NY contains an unusually complete sequence.
This collection contains metamorphic rocks from chlorite grade to sillimanite grade in a tight spatial window which records the regional metamorphic gradient increasing from WNW to ESE. This collection also contains some rocks that mirror the protoliths of the schists and quartzites of the sequence (shales and graywacke).
Date
A point or period of time associated with an event in the lifecycle of the resource
1970
Spatial Coverage
Spatial characteristics of the resource.
Dutchess County, New York
Temporal Coverage
Temporal characteristics of the resource.
450-430 Ma
References
A related resource that is referenced, cited, or otherwise pointed to by the described resource.
<strong>Start Here:</strong> <br />Vollmer, F. W., and Walker, J., 2009, The classic Barrovian metamorphic sequence of Dutchess County and its structural and stratigraphic context in the Taconic Orogeny. In Guidebook—New York State Geological Association Meeting, v. 81, p. 11-1. <br /><a href="http://www2.newpaltz.edu/~vollmerf/papers/Vollmer_and_Walker_2009_NYSGA.pdf">http://www2.newpaltz.edu/~vollmerf/papers/Vollmer_and_Walker_2009_NYSGA.pdf</a> (accessed March 15th, 2015)<br /><br /><ul><li>A useful field trip guide across the Barrovian metamorphic sequence of Dutchess county. Good general introduction to the geology of the area.</li>
</ul><strong>Additional Resources:</strong><br />Whitney, D.L., Mechum, T.A., Keuhner, S.M., and Dilek, Y.R., 1996, Progressive metamorphism of pelitic rocks from protolith to granulite facies, Dutchess County, New York, USA: constraints on the timing of fluid infiltration during regional metamorphism, Journal of Metamorphic Geology, v. 14, p. 163-181. <a href="http://dx.doi.org/">http://dx.doi.org/<span>10.1046/j.1525-1314.1996.05836.x</span></a><br /><br /><ul><li>A fairly general look at the progressive metamorphism in Dutchess County by one of the foremost workers in the area.</li>
</ul><br />Knopf, E.B., 1927, Some recent work in the Taconic area: American Journal of Science, v. 41, p. 42-458. <a href="http://dx.doi.org/">http://dx.doi.org/<span>10.2475/ajs.s5-14.84.429</span></a><br /><br /><ul><li>One of the first articles to describle the Dutchess County rocks as a "classic" Barrovian sequence. </li>
</ul><br />Ghent, E.D., Stout, M.Z., 1981, Geobarometry and geothermometry of plagioclase-biotite-garnet-muscovite assemblages, Contributions to Mineralogy and Petrology, v. 76, p. 92-97. <a href="http://dx.doi.org/">http://dx.doi.org/<span>10.1007/BF00373688</span></a><br /><br /><br /><ul><li>Work constraining the pressure and temperature paths of metamorphism in the sequence through equilibrium assemblages. This work was found to be in agreement with other equilibrium assemblage PT paths.</li>
</ul><br />Whitney, D.L., Mechum, T.A., Dilek, Y.R., and Keuhner, S.M., 1996, Modification of garnet during regional metamorphism in garnet through sillimanite-zone rocks, Dutchess County, New York, American Mineralogist, v. 81, p. 696-705. <a href="http://www.minsocam.org/MSA/AmMin/TOC/Articles_Free/1996/Whitney_p696-705_96.pdf"> http://www.minsocam.org/MSA/AmMin/TOC/Articles_Free/1996/Whitney_p696-705_96.pdf</a><br /><br /><ul><li>Work by Whitney on changes in PTX conditions leading to modification of garnet in the metamorphic sequence. Garnet is widely distributed through the sequence, which makes it a useful marker for tracking these changes.</li>
</ul>
Rock
A physical material with a mineral composition.
Unit
Formation or other descriptive rock category
Barrovian Metamorphic Sequence
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/.
Identifier
An unambiguous reference to the resource within a given context
DUCO-16
Title
A name given to the resource
Marble
Spatial Coverage
Spatial characteristics of the resource.
Dutchess Co., NY
Contributor
An entity responsible for making contributions to the resource
Western Minerals
Is Part Of
A related resource in which the described resource is physically or logically included.
<a href="http://geosciencecollections.milne-library.org/collections/show/18">Barrovian Metamorphic Sequence--Dutchess County, New York</a>
Description
An account of the resource
Metamorphised Balmville limestone with visible phlogopite crystals. Also contains tremolite visible at the outcrop level. Within nose of anticline of Walloomsac schist.
The PPL thin section shows a large irregular calcite grain with tremolite at the bottom.
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals Inc.
-
https://geosciencecollections.milne-library.org/files/original/8efdd035b9a04d655111f63673060853.JPG
b3bae3b0d5314b7e6b198e3e7dec4c84
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
DUCO-15 hand sample of marble
https://geosciencecollections.milne-library.org/files/original/b1dbef6df00761731e05cabedcc826c2.png
9544effd39a5e33a5db90862a6a9f257
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
xpl / ppl
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
(DUCO) Barrovian Metamorphic Sequence -- Dutchess County, New York
Contributor
An entity responsible for making contributions to the resource
Western Minerals, Inc.
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals, Inc.
Description
An account of the resource
A classic example of Barrovian-type metamorphism in Dutchess County, NY associated with the Taconic orogeny. A Barrovian metamorphic sequence displays gradual pressure and temperature increase along the metamorphic gradient, and occurs during regional metamorphism. These zones of pressure and temperature increase are recognizable by the characteristic minerals that accompany them. Dutchess County, NY contains an unusually complete sequence.
This collection contains metamorphic rocks from chlorite grade to sillimanite grade in a tight spatial window which records the regional metamorphic gradient increasing from WNW to ESE. This collection also contains some rocks that mirror the protoliths of the schists and quartzites of the sequence (shales and graywacke).
Date
A point or period of time associated with an event in the lifecycle of the resource
1970
Spatial Coverage
Spatial characteristics of the resource.
Dutchess County, New York
Temporal Coverage
Temporal characteristics of the resource.
450-430 Ma
References
A related resource that is referenced, cited, or otherwise pointed to by the described resource.
<strong>Start Here:</strong> <br />Vollmer, F. W., and Walker, J., 2009, The classic Barrovian metamorphic sequence of Dutchess County and its structural and stratigraphic context in the Taconic Orogeny. In Guidebook—New York State Geological Association Meeting, v. 81, p. 11-1. <br /><a href="http://www2.newpaltz.edu/~vollmerf/papers/Vollmer_and_Walker_2009_NYSGA.pdf">http://www2.newpaltz.edu/~vollmerf/papers/Vollmer_and_Walker_2009_NYSGA.pdf</a> (accessed March 15th, 2015)<br /><br /><ul><li>A useful field trip guide across the Barrovian metamorphic sequence of Dutchess county. Good general introduction to the geology of the area.</li>
</ul><strong>Additional Resources:</strong><br />Whitney, D.L., Mechum, T.A., Keuhner, S.M., and Dilek, Y.R., 1996, Progressive metamorphism of pelitic rocks from protolith to granulite facies, Dutchess County, New York, USA: constraints on the timing of fluid infiltration during regional metamorphism, Journal of Metamorphic Geology, v. 14, p. 163-181. <a href="http://dx.doi.org/">http://dx.doi.org/<span>10.1046/j.1525-1314.1996.05836.x</span></a><br /><br /><ul><li>A fairly general look at the progressive metamorphism in Dutchess County by one of the foremost workers in the area.</li>
</ul><br />Knopf, E.B., 1927, Some recent work in the Taconic area: American Journal of Science, v. 41, p. 42-458. <a href="http://dx.doi.org/">http://dx.doi.org/<span>10.2475/ajs.s5-14.84.429</span></a><br /><br /><ul><li>One of the first articles to describle the Dutchess County rocks as a "classic" Barrovian sequence. </li>
</ul><br />Ghent, E.D., Stout, M.Z., 1981, Geobarometry and geothermometry of plagioclase-biotite-garnet-muscovite assemblages, Contributions to Mineralogy and Petrology, v. 76, p. 92-97. <a href="http://dx.doi.org/">http://dx.doi.org/<span>10.1007/BF00373688</span></a><br /><br /><br /><ul><li>Work constraining the pressure and temperature paths of metamorphism in the sequence through equilibrium assemblages. This work was found to be in agreement with other equilibrium assemblage PT paths.</li>
</ul><br />Whitney, D.L., Mechum, T.A., Dilek, Y.R., and Keuhner, S.M., 1996, Modification of garnet during regional metamorphism in garnet through sillimanite-zone rocks, Dutchess County, New York, American Mineralogist, v. 81, p. 696-705. <a href="http://www.minsocam.org/MSA/AmMin/TOC/Articles_Free/1996/Whitney_p696-705_96.pdf"> http://www.minsocam.org/MSA/AmMin/TOC/Articles_Free/1996/Whitney_p696-705_96.pdf</a><br /><br /><ul><li>Work by Whitney on changes in PTX conditions leading to modification of garnet in the metamorphic sequence. Garnet is widely distributed through the sequence, which makes it a useful marker for tracking these changes.</li>
</ul>
Rock
A physical material with a mineral composition.
Unit
Formation or other descriptive rock category
Barrovian Metamorphic Sequence
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/.
Identifier
An unambiguous reference to the resource within a given context
DUCO-15
Title
A name given to the resource
Marble
Spatial Coverage
Spatial characteristics of the resource.
Dutchess Co., NY
Contributor
An entity responsible for making contributions to the resource
Western Minerals
Is Part Of
A related resource in which the described resource is physically or logically included.
<a href="http://geosciencecollections.milne-library.org/collections/show/18">Barrovian Metamorphic Sequence--Dutchess County, New York</a>
Description
An account of the resource
Metamorphised Balmville limestone with visible phlogopite crystals. Also contains actinolite.
Thin section shows calcite with interspersed pleochroic phlogopite.
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals Inc.
-
https://geosciencecollections.milne-library.org/files/original/f2efcd7881d69a9135228855899edea7.JPG
7c0af51b4e712b82a2e256cab54e8926
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
DUCO-14 hand sample of marble
https://geosciencecollections.milne-library.org/files/original/c5b735c1d368fe4fdfa2a1dfd839abd9.png
2f74f2f8626dce9876a1217bd8025a2b
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
xpl / ppl
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
(DUCO) Barrovian Metamorphic Sequence -- Dutchess County, New York
Contributor
An entity responsible for making contributions to the resource
Western Minerals, Inc.
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals, Inc.
Description
An account of the resource
A classic example of Barrovian-type metamorphism in Dutchess County, NY associated with the Taconic orogeny. A Barrovian metamorphic sequence displays gradual pressure and temperature increase along the metamorphic gradient, and occurs during regional metamorphism. These zones of pressure and temperature increase are recognizable by the characteristic minerals that accompany them. Dutchess County, NY contains an unusually complete sequence.
This collection contains metamorphic rocks from chlorite grade to sillimanite grade in a tight spatial window which records the regional metamorphic gradient increasing from WNW to ESE. This collection also contains some rocks that mirror the protoliths of the schists and quartzites of the sequence (shales and graywacke).
Date
A point or period of time associated with an event in the lifecycle of the resource
1970
Spatial Coverage
Spatial characteristics of the resource.
Dutchess County, New York
Temporal Coverage
Temporal characteristics of the resource.
450-430 Ma
References
A related resource that is referenced, cited, or otherwise pointed to by the described resource.
<strong>Start Here:</strong> <br />Vollmer, F. W., and Walker, J., 2009, The classic Barrovian metamorphic sequence of Dutchess County and its structural and stratigraphic context in the Taconic Orogeny. In Guidebook—New York State Geological Association Meeting, v. 81, p. 11-1. <br /><a href="http://www2.newpaltz.edu/~vollmerf/papers/Vollmer_and_Walker_2009_NYSGA.pdf">http://www2.newpaltz.edu/~vollmerf/papers/Vollmer_and_Walker_2009_NYSGA.pdf</a> (accessed March 15th, 2015)<br /><br /><ul><li>A useful field trip guide across the Barrovian metamorphic sequence of Dutchess county. Good general introduction to the geology of the area.</li>
</ul><strong>Additional Resources:</strong><br />Whitney, D.L., Mechum, T.A., Keuhner, S.M., and Dilek, Y.R., 1996, Progressive metamorphism of pelitic rocks from protolith to granulite facies, Dutchess County, New York, USA: constraints on the timing of fluid infiltration during regional metamorphism, Journal of Metamorphic Geology, v. 14, p. 163-181. <a href="http://dx.doi.org/">http://dx.doi.org/<span>10.1046/j.1525-1314.1996.05836.x</span></a><br /><br /><ul><li>A fairly general look at the progressive metamorphism in Dutchess County by one of the foremost workers in the area.</li>
</ul><br />Knopf, E.B., 1927, Some recent work in the Taconic area: American Journal of Science, v. 41, p. 42-458. <a href="http://dx.doi.org/">http://dx.doi.org/<span>10.2475/ajs.s5-14.84.429</span></a><br /><br /><ul><li>One of the first articles to describle the Dutchess County rocks as a "classic" Barrovian sequence. </li>
</ul><br />Ghent, E.D., Stout, M.Z., 1981, Geobarometry and geothermometry of plagioclase-biotite-garnet-muscovite assemblages, Contributions to Mineralogy and Petrology, v. 76, p. 92-97. <a href="http://dx.doi.org/">http://dx.doi.org/<span>10.1007/BF00373688</span></a><br /><br /><br /><ul><li>Work constraining the pressure and temperature paths of metamorphism in the sequence through equilibrium assemblages. This work was found to be in agreement with other equilibrium assemblage PT paths.</li>
</ul><br />Whitney, D.L., Mechum, T.A., Dilek, Y.R., and Keuhner, S.M., 1996, Modification of garnet during regional metamorphism in garnet through sillimanite-zone rocks, Dutchess County, New York, American Mineralogist, v. 81, p. 696-705. <a href="http://www.minsocam.org/MSA/AmMin/TOC/Articles_Free/1996/Whitney_p696-705_96.pdf"> http://www.minsocam.org/MSA/AmMin/TOC/Articles_Free/1996/Whitney_p696-705_96.pdf</a><br /><br /><ul><li>Work by Whitney on changes in PTX conditions leading to modification of garnet in the metamorphic sequence. Garnet is widely distributed through the sequence, which makes it a useful marker for tracking these changes.</li>
</ul>
Rock
A physical material with a mineral composition.
Unit
Formation or other descriptive rock category
Barrovian Metamorphic Sequence
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/.
Identifier
An unambiguous reference to the resource within a given context
DUCO-14
Title
A name given to the resource
Marble
Spatial Coverage
Spatial characteristics of the resource.
Dutchess Co., NY
Contributor
An entity responsible for making contributions to the resource
Western Minerals
Is Part Of
A related resource in which the described resource is physically or logically included.
<a href="http://geosciencecollections.milne-library.org/collections/show/18">Barrovian Metamorphic Sequence--Dutchess County, New York</a>
Description
An account of the resource
Metamorphised Briarcliff dolostone with visible micas. Contains diopside, tremollite, and phlogopite. At the metamorphic grade of the first sillimanite isograd.
Thin section shows irregular dolomite grains in the center, with pleochroic phlogopite at top and tremolite at bottom.
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals Inc.
-
https://geosciencecollections.milne-library.org/files/original/2bccaa74d0d6fdc5001589e7bc05af4c.JPG
74b6062320018ed0fd8b7f0953b2543f
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
DUCO-13 hand sample of marble
https://geosciencecollections.milne-library.org/files/original/509d251e9059b712c742999f95da3b48.png
010c4581d5f3362fe74472687b3f1110
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
xpl / ppl
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
(DUCO) Barrovian Metamorphic Sequence -- Dutchess County, New York
Contributor
An entity responsible for making contributions to the resource
Western Minerals, Inc.
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals, Inc.
Description
An account of the resource
A classic example of Barrovian-type metamorphism in Dutchess County, NY associated with the Taconic orogeny. A Barrovian metamorphic sequence displays gradual pressure and temperature increase along the metamorphic gradient, and occurs during regional metamorphism. These zones of pressure and temperature increase are recognizable by the characteristic minerals that accompany them. Dutchess County, NY contains an unusually complete sequence.
This collection contains metamorphic rocks from chlorite grade to sillimanite grade in a tight spatial window which records the regional metamorphic gradient increasing from WNW to ESE. This collection also contains some rocks that mirror the protoliths of the schists and quartzites of the sequence (shales and graywacke).
Date
A point or period of time associated with an event in the lifecycle of the resource
1970
Spatial Coverage
Spatial characteristics of the resource.
Dutchess County, New York
Temporal Coverage
Temporal characteristics of the resource.
450-430 Ma
References
A related resource that is referenced, cited, or otherwise pointed to by the described resource.
<strong>Start Here:</strong> <br />Vollmer, F. W., and Walker, J., 2009, The classic Barrovian metamorphic sequence of Dutchess County and its structural and stratigraphic context in the Taconic Orogeny. In Guidebook—New York State Geological Association Meeting, v. 81, p. 11-1. <br /><a href="http://www2.newpaltz.edu/~vollmerf/papers/Vollmer_and_Walker_2009_NYSGA.pdf">http://www2.newpaltz.edu/~vollmerf/papers/Vollmer_and_Walker_2009_NYSGA.pdf</a> (accessed March 15th, 2015)<br /><br /><ul><li>A useful field trip guide across the Barrovian metamorphic sequence of Dutchess county. Good general introduction to the geology of the area.</li>
</ul><strong>Additional Resources:</strong><br />Whitney, D.L., Mechum, T.A., Keuhner, S.M., and Dilek, Y.R., 1996, Progressive metamorphism of pelitic rocks from protolith to granulite facies, Dutchess County, New York, USA: constraints on the timing of fluid infiltration during regional metamorphism, Journal of Metamorphic Geology, v. 14, p. 163-181. <a href="http://dx.doi.org/">http://dx.doi.org/<span>10.1046/j.1525-1314.1996.05836.x</span></a><br /><br /><ul><li>A fairly general look at the progressive metamorphism in Dutchess County by one of the foremost workers in the area.</li>
</ul><br />Knopf, E.B., 1927, Some recent work in the Taconic area: American Journal of Science, v. 41, p. 42-458. <a href="http://dx.doi.org/">http://dx.doi.org/<span>10.2475/ajs.s5-14.84.429</span></a><br /><br /><ul><li>One of the first articles to describle the Dutchess County rocks as a "classic" Barrovian sequence. </li>
</ul><br />Ghent, E.D., Stout, M.Z., 1981, Geobarometry and geothermometry of plagioclase-biotite-garnet-muscovite assemblages, Contributions to Mineralogy and Petrology, v. 76, p. 92-97. <a href="http://dx.doi.org/">http://dx.doi.org/<span>10.1007/BF00373688</span></a><br /><br /><br /><ul><li>Work constraining the pressure and temperature paths of metamorphism in the sequence through equilibrium assemblages. This work was found to be in agreement with other equilibrium assemblage PT paths.</li>
</ul><br />Whitney, D.L., Mechum, T.A., Dilek, Y.R., and Keuhner, S.M., 1996, Modification of garnet during regional metamorphism in garnet through sillimanite-zone rocks, Dutchess County, New York, American Mineralogist, v. 81, p. 696-705. <a href="http://www.minsocam.org/MSA/AmMin/TOC/Articles_Free/1996/Whitney_p696-705_96.pdf"> http://www.minsocam.org/MSA/AmMin/TOC/Articles_Free/1996/Whitney_p696-705_96.pdf</a><br /><br /><ul><li>Work by Whitney on changes in PTX conditions leading to modification of garnet in the metamorphic sequence. Garnet is widely distributed through the sequence, which makes it a useful marker for tracking these changes.</li>
</ul>
Rock
A physical material with a mineral composition.
Unit
Formation or other descriptive rock category
Barrovian Metamorphic Sequence
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/.
Identifier
An unambiguous reference to the resource within a given context
DUCO-13
Title
A name given to the resource
Marble
Spatial Coverage
Spatial characteristics of the resource.
Dutchess Co., NY
Contributor
An entity responsible for making contributions to the resource
Western Minerals
Is Part Of
A related resource in which the described resource is physically or logically included.
<a href="http://geosciencecollections.milne-library.org/collections/show/18">Barrovian Metamorphic Sequence--Dutchess County, New York</a>
Description
An account of the resource
Metamorphised Briarcliff dolostone.
The thin section shows well-twinned dolomite grains with diopside at the bottom.
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals Inc.
-
https://geosciencecollections.milne-library.org/files/original/bb6b93a66ddead1d820767cc1db3beda.JPG
14722bb82789ff65de1e7a844248b797
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
DUCO-12 hand sample of muscovite schist
DUCO-12 hand sample
https://geosciencecollections.milne-library.org/files/original/eb6125fd1721ae24c621f7b10d11e56d.png
97ad61ef60bf3f13c871d03411da9f2e
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
ppl / xpl
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
(DUCO) Barrovian Metamorphic Sequence -- Dutchess County, New York
Contributor
An entity responsible for making contributions to the resource
Western Minerals, Inc.
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals, Inc.
Description
An account of the resource
A classic example of Barrovian-type metamorphism in Dutchess County, NY associated with the Taconic orogeny. A Barrovian metamorphic sequence displays gradual pressure and temperature increase along the metamorphic gradient, and occurs during regional metamorphism. These zones of pressure and temperature increase are recognizable by the characteristic minerals that accompany them. Dutchess County, NY contains an unusually complete sequence.
This collection contains metamorphic rocks from chlorite grade to sillimanite grade in a tight spatial window which records the regional metamorphic gradient increasing from WNW to ESE. This collection also contains some rocks that mirror the protoliths of the schists and quartzites of the sequence (shales and graywacke).
Date
A point or period of time associated with an event in the lifecycle of the resource
1970
Spatial Coverage
Spatial characteristics of the resource.
Dutchess County, New York
Temporal Coverage
Temporal characteristics of the resource.
450-430 Ma
References
A related resource that is referenced, cited, or otherwise pointed to by the described resource.
<strong>Start Here:</strong> <br />Vollmer, F. W., and Walker, J., 2009, The classic Barrovian metamorphic sequence of Dutchess County and its structural and stratigraphic context in the Taconic Orogeny. In Guidebook—New York State Geological Association Meeting, v. 81, p. 11-1. <br /><a href="http://www2.newpaltz.edu/~vollmerf/papers/Vollmer_and_Walker_2009_NYSGA.pdf">http://www2.newpaltz.edu/~vollmerf/papers/Vollmer_and_Walker_2009_NYSGA.pdf</a> (accessed March 15th, 2015)<br /><br /><ul><li>A useful field trip guide across the Barrovian metamorphic sequence of Dutchess county. Good general introduction to the geology of the area.</li>
</ul><strong>Additional Resources:</strong><br />Whitney, D.L., Mechum, T.A., Keuhner, S.M., and Dilek, Y.R., 1996, Progressive metamorphism of pelitic rocks from protolith to granulite facies, Dutchess County, New York, USA: constraints on the timing of fluid infiltration during regional metamorphism, Journal of Metamorphic Geology, v. 14, p. 163-181. <a href="http://dx.doi.org/">http://dx.doi.org/<span>10.1046/j.1525-1314.1996.05836.x</span></a><br /><br /><ul><li>A fairly general look at the progressive metamorphism in Dutchess County by one of the foremost workers in the area.</li>
</ul><br />Knopf, E.B., 1927, Some recent work in the Taconic area: American Journal of Science, v. 41, p. 42-458. <a href="http://dx.doi.org/">http://dx.doi.org/<span>10.2475/ajs.s5-14.84.429</span></a><br /><br /><ul><li>One of the first articles to describle the Dutchess County rocks as a "classic" Barrovian sequence. </li>
</ul><br />Ghent, E.D., Stout, M.Z., 1981, Geobarometry and geothermometry of plagioclase-biotite-garnet-muscovite assemblages, Contributions to Mineralogy and Petrology, v. 76, p. 92-97. <a href="http://dx.doi.org/">http://dx.doi.org/<span>10.1007/BF00373688</span></a><br /><br /><br /><ul><li>Work constraining the pressure and temperature paths of metamorphism in the sequence through equilibrium assemblages. This work was found to be in agreement with other equilibrium assemblage PT paths.</li>
</ul><br />Whitney, D.L., Mechum, T.A., Dilek, Y.R., and Keuhner, S.M., 1996, Modification of garnet during regional metamorphism in garnet through sillimanite-zone rocks, Dutchess County, New York, American Mineralogist, v. 81, p. 696-705. <a href="http://www.minsocam.org/MSA/AmMin/TOC/Articles_Free/1996/Whitney_p696-705_96.pdf"> http://www.minsocam.org/MSA/AmMin/TOC/Articles_Free/1996/Whitney_p696-705_96.pdf</a><br /><br /><ul><li>Work by Whitney on changes in PTX conditions leading to modification of garnet in the metamorphic sequence. Garnet is widely distributed through the sequence, which makes it a useful marker for tracking these changes.</li>
</ul>
Rock
A physical material with a mineral composition.
Unit
Formation or other descriptive rock category
Barrovian Metamorphic Sequence
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/.
Identifier
An unambiguous reference to the resource within a given context
DUCO-12
Title
A name given to the resource
Muscovite schist
Spatial Coverage
Spatial characteristics of the resource.
Dutchess Co., NY
Contributor
An entity responsible for making contributions to the resource
Western Minerals
Is Part Of
A related resource in which the described resource is physically or logically included.
<a href="http://geosciencecollections.milne-library.org/collections/show/18">Barrovian Metamorphic Sequence--Dutchess County, New York</a>
Description
An account of the resource
Extremely coarse-grained muscovite schist. Large garnets visible in hand sample. Sillimanite is not recognizable in hand sample, however.
The thin section shows muscovite (with minor sillimanite) in a large band, biotite, staurolite, and quartz.
This rock is from the sillimanite zone of the Barrovian metamorphic sequence (highest metamorphism).
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals Inc.
-
https://geosciencecollections.milne-library.org/files/original/2a5001f821385ec55ab2f83f1b9e85de.JPG
3796ceb748f4956a3bc17af38a78706d
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
DUCO-11 hand sample of kyanite biotite garnet schist
https://geosciencecollections.milne-library.org/files/original/33e8694856feebfacd367078030d867a.png
b596e1dcf288051ba79caa9d355a0abd
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
ppl
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
(DUCO) Barrovian Metamorphic Sequence -- Dutchess County, New York
Contributor
An entity responsible for making contributions to the resource
Western Minerals, Inc.
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals, Inc.
Description
An account of the resource
A classic example of Barrovian-type metamorphism in Dutchess County, NY associated with the Taconic orogeny. A Barrovian metamorphic sequence displays gradual pressure and temperature increase along the metamorphic gradient, and occurs during regional metamorphism. These zones of pressure and temperature increase are recognizable by the characteristic minerals that accompany them. Dutchess County, NY contains an unusually complete sequence.
This collection contains metamorphic rocks from chlorite grade to sillimanite grade in a tight spatial window which records the regional metamorphic gradient increasing from WNW to ESE. This collection also contains some rocks that mirror the protoliths of the schists and quartzites of the sequence (shales and graywacke).
Date
A point or period of time associated with an event in the lifecycle of the resource
1970
Spatial Coverage
Spatial characteristics of the resource.
Dutchess County, New York
Temporal Coverage
Temporal characteristics of the resource.
450-430 Ma
References
A related resource that is referenced, cited, or otherwise pointed to by the described resource.
<strong>Start Here:</strong> <br />Vollmer, F. W., and Walker, J., 2009, The classic Barrovian metamorphic sequence of Dutchess County and its structural and stratigraphic context in the Taconic Orogeny. In Guidebook—New York State Geological Association Meeting, v. 81, p. 11-1. <br /><a href="http://www2.newpaltz.edu/~vollmerf/papers/Vollmer_and_Walker_2009_NYSGA.pdf">http://www2.newpaltz.edu/~vollmerf/papers/Vollmer_and_Walker_2009_NYSGA.pdf</a> (accessed March 15th, 2015)<br /><br /><ul><li>A useful field trip guide across the Barrovian metamorphic sequence of Dutchess county. Good general introduction to the geology of the area.</li>
</ul><strong>Additional Resources:</strong><br />Whitney, D.L., Mechum, T.A., Keuhner, S.M., and Dilek, Y.R., 1996, Progressive metamorphism of pelitic rocks from protolith to granulite facies, Dutchess County, New York, USA: constraints on the timing of fluid infiltration during regional metamorphism, Journal of Metamorphic Geology, v. 14, p. 163-181. <a href="http://dx.doi.org/">http://dx.doi.org/<span>10.1046/j.1525-1314.1996.05836.x</span></a><br /><br /><ul><li>A fairly general look at the progressive metamorphism in Dutchess County by one of the foremost workers in the area.</li>
</ul><br />Knopf, E.B., 1927, Some recent work in the Taconic area: American Journal of Science, v. 41, p. 42-458. <a href="http://dx.doi.org/">http://dx.doi.org/<span>10.2475/ajs.s5-14.84.429</span></a><br /><br /><ul><li>One of the first articles to describle the Dutchess County rocks as a "classic" Barrovian sequence. </li>
</ul><br />Ghent, E.D., Stout, M.Z., 1981, Geobarometry and geothermometry of plagioclase-biotite-garnet-muscovite assemblages, Contributions to Mineralogy and Petrology, v. 76, p. 92-97. <a href="http://dx.doi.org/">http://dx.doi.org/<span>10.1007/BF00373688</span></a><br /><br /><br /><ul><li>Work constraining the pressure and temperature paths of metamorphism in the sequence through equilibrium assemblages. This work was found to be in agreement with other equilibrium assemblage PT paths.</li>
</ul><br />Whitney, D.L., Mechum, T.A., Dilek, Y.R., and Keuhner, S.M., 1996, Modification of garnet during regional metamorphism in garnet through sillimanite-zone rocks, Dutchess County, New York, American Mineralogist, v. 81, p. 696-705. <a href="http://www.minsocam.org/MSA/AmMin/TOC/Articles_Free/1996/Whitney_p696-705_96.pdf"> http://www.minsocam.org/MSA/AmMin/TOC/Articles_Free/1996/Whitney_p696-705_96.pdf</a><br /><br /><ul><li>Work by Whitney on changes in PTX conditions leading to modification of garnet in the metamorphic sequence. Garnet is widely distributed through the sequence, which makes it a useful marker for tracking these changes.</li>
</ul>
Rock
A physical material with a mineral composition.
Unit
Formation or other descriptive rock category
Barrovian Metamorphic Sequence
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/.
Identifier
An unambiguous reference to the resource within a given context
DUCO-11
Title
A name given to the resource
Kyanite biotite garnet schist
Spatial Coverage
Spatial characteristics of the resource.
Dutchess Co., NY
Contributor
An entity responsible for making contributions to the resource
Western Minerals
Is Part Of
A related resource in which the described resource is physically or logically included.
<a href="http://geosciencecollections.milne-library.org/collections/show/18">Barrovian Metamorphic Sequence--Dutchess County, New York</a>
Description
An account of the resource
Schist with coarse biotite controlling foliation. Garnets visible in some hand samples. Kyanite blades without preferred orientation--at higher concentration within folds. Possibly from the Walloomsac schist.
The PPL thin section shows biotite, muscovite, kyanite, and staurolite.
This rock is from the kyanite zone of the Barrovian metamorphic sequence (high metamorphism).
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals Inc.
-
https://geosciencecollections.milne-library.org/files/original/f05a8651bc19fbf711a34f2a176ddfb1.JPG
8121e6ce0af723edf437fdd686cbced0
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
DUCO-10 hand sample of quartzite
https://geosciencecollections.milne-library.org/files/original/805ecf6a88300839eb64e310c1869888.png
fe5320668d17549ca1f4b7c6a069b789
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
ppl / xpl
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
(DUCO) Barrovian Metamorphic Sequence -- Dutchess County, New York
Contributor
An entity responsible for making contributions to the resource
Western Minerals, Inc.
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals, Inc.
Description
An account of the resource
A classic example of Barrovian-type metamorphism in Dutchess County, NY associated with the Taconic orogeny. A Barrovian metamorphic sequence displays gradual pressure and temperature increase along the metamorphic gradient, and occurs during regional metamorphism. These zones of pressure and temperature increase are recognizable by the characteristic minerals that accompany them. Dutchess County, NY contains an unusually complete sequence.
This collection contains metamorphic rocks from chlorite grade to sillimanite grade in a tight spatial window which records the regional metamorphic gradient increasing from WNW to ESE. This collection also contains some rocks that mirror the protoliths of the schists and quartzites of the sequence (shales and graywacke).
Date
A point or period of time associated with an event in the lifecycle of the resource
1970
Spatial Coverage
Spatial characteristics of the resource.
Dutchess County, New York
Temporal Coverage
Temporal characteristics of the resource.
450-430 Ma
References
A related resource that is referenced, cited, or otherwise pointed to by the described resource.
<strong>Start Here:</strong> <br />Vollmer, F. W., and Walker, J., 2009, The classic Barrovian metamorphic sequence of Dutchess County and its structural and stratigraphic context in the Taconic Orogeny. In Guidebook—New York State Geological Association Meeting, v. 81, p. 11-1. <br /><a href="http://www2.newpaltz.edu/~vollmerf/papers/Vollmer_and_Walker_2009_NYSGA.pdf">http://www2.newpaltz.edu/~vollmerf/papers/Vollmer_and_Walker_2009_NYSGA.pdf</a> (accessed March 15th, 2015)<br /><br /><ul><li>A useful field trip guide across the Barrovian metamorphic sequence of Dutchess county. Good general introduction to the geology of the area.</li>
</ul><strong>Additional Resources:</strong><br />Whitney, D.L., Mechum, T.A., Keuhner, S.M., and Dilek, Y.R., 1996, Progressive metamorphism of pelitic rocks from protolith to granulite facies, Dutchess County, New York, USA: constraints on the timing of fluid infiltration during regional metamorphism, Journal of Metamorphic Geology, v. 14, p. 163-181. <a href="http://dx.doi.org/">http://dx.doi.org/<span>10.1046/j.1525-1314.1996.05836.x</span></a><br /><br /><ul><li>A fairly general look at the progressive metamorphism in Dutchess County by one of the foremost workers in the area.</li>
</ul><br />Knopf, E.B., 1927, Some recent work in the Taconic area: American Journal of Science, v. 41, p. 42-458. <a href="http://dx.doi.org/">http://dx.doi.org/<span>10.2475/ajs.s5-14.84.429</span></a><br /><br /><ul><li>One of the first articles to describle the Dutchess County rocks as a "classic" Barrovian sequence. </li>
</ul><br />Ghent, E.D., Stout, M.Z., 1981, Geobarometry and geothermometry of plagioclase-biotite-garnet-muscovite assemblages, Contributions to Mineralogy and Petrology, v. 76, p. 92-97. <a href="http://dx.doi.org/">http://dx.doi.org/<span>10.1007/BF00373688</span></a><br /><br /><br /><ul><li>Work constraining the pressure and temperature paths of metamorphism in the sequence through equilibrium assemblages. This work was found to be in agreement with other equilibrium assemblage PT paths.</li>
</ul><br />Whitney, D.L., Mechum, T.A., Dilek, Y.R., and Keuhner, S.M., 1996, Modification of garnet during regional metamorphism in garnet through sillimanite-zone rocks, Dutchess County, New York, American Mineralogist, v. 81, p. 696-705. <a href="http://www.minsocam.org/MSA/AmMin/TOC/Articles_Free/1996/Whitney_p696-705_96.pdf"> http://www.minsocam.org/MSA/AmMin/TOC/Articles_Free/1996/Whitney_p696-705_96.pdf</a><br /><br /><ul><li>Work by Whitney on changes in PTX conditions leading to modification of garnet in the metamorphic sequence. Garnet is widely distributed through the sequence, which makes it a useful marker for tracking these changes.</li>
</ul>
Rock
A physical material with a mineral composition.
Unit
Formation or other descriptive rock category
Barrovian Metamorphic Sequence
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/.
Identifier
An unambiguous reference to the resource within a given context
DUCO-10
Title
A name given to the resource
Quartzite
Spatial Coverage
Spatial characteristics of the resource.
Dutchess Co., NY
Contributor
An entity responsible for making contributions to the resource
Western Minerals
Is Part Of
A related resource in which the described resource is physically or logically included.
<a href="http://geosciencecollections.milne-library.org/collections/show/18">Barrovian Metamorphic Sequence--Dutchess County, New York</a>
Description
An account of the resource
Metamorphised sandstone with a gray, glassy appearance. From the Paughquag quartzite, a late Cambrian formation. The basal Cambrian quartzite rests on pre-Cambrian gneisses.
The thin section shows quartz and plag with some biotite and grain boundaries. Many fluid inclusions noticeable.
This rock has a different protolith than the many pelitic schists around it.
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals Inc.
-
https://geosciencecollections.milne-library.org/files/original/47531d6403894d5f5d65265bc41c18ae.JPG
0419dea18864ce641f4cf75f89c67b4d
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
DUCO-9 hand sample of staurolite schist
https://geosciencecollections.milne-library.org/files/original/605ad53fdc36beb3aa64190885c4487d.png
80c1a83e8c657a20087d0842816ac3aa
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
xpl / ppl
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
(DUCO) Barrovian Metamorphic Sequence -- Dutchess County, New York
Contributor
An entity responsible for making contributions to the resource
Western Minerals, Inc.
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals, Inc.
Description
An account of the resource
A classic example of Barrovian-type metamorphism in Dutchess County, NY associated with the Taconic orogeny. A Barrovian metamorphic sequence displays gradual pressure and temperature increase along the metamorphic gradient, and occurs during regional metamorphism. These zones of pressure and temperature increase are recognizable by the characteristic minerals that accompany them. Dutchess County, NY contains an unusually complete sequence.
This collection contains metamorphic rocks from chlorite grade to sillimanite grade in a tight spatial window which records the regional metamorphic gradient increasing from WNW to ESE. This collection also contains some rocks that mirror the protoliths of the schists and quartzites of the sequence (shales and graywacke).
Date
A point or period of time associated with an event in the lifecycle of the resource
1970
Spatial Coverage
Spatial characteristics of the resource.
Dutchess County, New York
Temporal Coverage
Temporal characteristics of the resource.
450-430 Ma
References
A related resource that is referenced, cited, or otherwise pointed to by the described resource.
<strong>Start Here:</strong> <br />Vollmer, F. W., and Walker, J., 2009, The classic Barrovian metamorphic sequence of Dutchess County and its structural and stratigraphic context in the Taconic Orogeny. In Guidebook—New York State Geological Association Meeting, v. 81, p. 11-1. <br /><a href="http://www2.newpaltz.edu/~vollmerf/papers/Vollmer_and_Walker_2009_NYSGA.pdf">http://www2.newpaltz.edu/~vollmerf/papers/Vollmer_and_Walker_2009_NYSGA.pdf</a> (accessed March 15th, 2015)<br /><br /><ul><li>A useful field trip guide across the Barrovian metamorphic sequence of Dutchess county. Good general introduction to the geology of the area.</li>
</ul><strong>Additional Resources:</strong><br />Whitney, D.L., Mechum, T.A., Keuhner, S.M., and Dilek, Y.R., 1996, Progressive metamorphism of pelitic rocks from protolith to granulite facies, Dutchess County, New York, USA: constraints on the timing of fluid infiltration during regional metamorphism, Journal of Metamorphic Geology, v. 14, p. 163-181. <a href="http://dx.doi.org/">http://dx.doi.org/<span>10.1046/j.1525-1314.1996.05836.x</span></a><br /><br /><ul><li>A fairly general look at the progressive metamorphism in Dutchess County by one of the foremost workers in the area.</li>
</ul><br />Knopf, E.B., 1927, Some recent work in the Taconic area: American Journal of Science, v. 41, p. 42-458. <a href="http://dx.doi.org/">http://dx.doi.org/<span>10.2475/ajs.s5-14.84.429</span></a><br /><br /><ul><li>One of the first articles to describle the Dutchess County rocks as a "classic" Barrovian sequence. </li>
</ul><br />Ghent, E.D., Stout, M.Z., 1981, Geobarometry and geothermometry of plagioclase-biotite-garnet-muscovite assemblages, Contributions to Mineralogy and Petrology, v. 76, p. 92-97. <a href="http://dx.doi.org/">http://dx.doi.org/<span>10.1007/BF00373688</span></a><br /><br /><br /><ul><li>Work constraining the pressure and temperature paths of metamorphism in the sequence through equilibrium assemblages. This work was found to be in agreement with other equilibrium assemblage PT paths.</li>
</ul><br />Whitney, D.L., Mechum, T.A., Dilek, Y.R., and Keuhner, S.M., 1996, Modification of garnet during regional metamorphism in garnet through sillimanite-zone rocks, Dutchess County, New York, American Mineralogist, v. 81, p. 696-705. <a href="http://www.minsocam.org/MSA/AmMin/TOC/Articles_Free/1996/Whitney_p696-705_96.pdf"> http://www.minsocam.org/MSA/AmMin/TOC/Articles_Free/1996/Whitney_p696-705_96.pdf</a><br /><br /><ul><li>Work by Whitney on changes in PTX conditions leading to modification of garnet in the metamorphic sequence. Garnet is widely distributed through the sequence, which makes it a useful marker for tracking these changes.</li>
</ul>
Rock
A physical material with a mineral composition.
Unit
Formation or other descriptive rock category
Barrovian Metamorphic Sequence
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/.
Identifier
An unambiguous reference to the resource within a given context
DUCO-9
Title
A name given to the resource
Staurolite schist
Spatial Coverage
Spatial characteristics of the resource.
Dutchess Co., NY
Contributor
An entity responsible for making contributions to the resource
Western Minerals
Is Part Of
A related resource in which the described resource is physically or logically included.
<a href="http://geosciencecollections.milne-library.org/collections/show/18">Barrovian Metamorphic Sequence--Dutchess County, New York</a>
Description
An account of the resource
Schist with coarse staurolite grains. This outcropping is approximately on the strike of the chloritoid schists (sample 7). Also contains garnet, muscovite, feldspar, and quartz. Presumed to be from the Everett Schist.
The thin section shows staurolite, biotite, muscovite (noticeable by pleochroism differences) and quartz.
This rock is from the staurolite zone in the Barrovian metamorphic sequence (higher intermediate metamorphism).
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals Inc.
-
https://geosciencecollections.milne-library.org/files/original/13f4f6bbef9a849cee6c877a9c1a6ebf.JPG
36b0f68514398d74d80f3acc25ffab00
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
DUCO-8 hand sample of staurolite chloritoid schist
https://geosciencecollections.milne-library.org/files/original/f08dfb776353d7f0d7dc73956e8f6e77.png
95c735cce2e47e8da43487c3aee0fa66
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
ppl / xpl
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
(DUCO) Barrovian Metamorphic Sequence -- Dutchess County, New York
Contributor
An entity responsible for making contributions to the resource
Western Minerals, Inc.
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals, Inc.
Description
An account of the resource
A classic example of Barrovian-type metamorphism in Dutchess County, NY associated with the Taconic orogeny. A Barrovian metamorphic sequence displays gradual pressure and temperature increase along the metamorphic gradient, and occurs during regional metamorphism. These zones of pressure and temperature increase are recognizable by the characteristic minerals that accompany them. Dutchess County, NY contains an unusually complete sequence.
This collection contains metamorphic rocks from chlorite grade to sillimanite grade in a tight spatial window which records the regional metamorphic gradient increasing from WNW to ESE. This collection also contains some rocks that mirror the protoliths of the schists and quartzites of the sequence (shales and graywacke).
Date
A point or period of time associated with an event in the lifecycle of the resource
1970
Spatial Coverage
Spatial characteristics of the resource.
Dutchess County, New York
Temporal Coverage
Temporal characteristics of the resource.
450-430 Ma
References
A related resource that is referenced, cited, or otherwise pointed to by the described resource.
<strong>Start Here:</strong> <br />Vollmer, F. W., and Walker, J., 2009, The classic Barrovian metamorphic sequence of Dutchess County and its structural and stratigraphic context in the Taconic Orogeny. In Guidebook—New York State Geological Association Meeting, v. 81, p. 11-1. <br /><a href="http://www2.newpaltz.edu/~vollmerf/papers/Vollmer_and_Walker_2009_NYSGA.pdf">http://www2.newpaltz.edu/~vollmerf/papers/Vollmer_and_Walker_2009_NYSGA.pdf</a> (accessed March 15th, 2015)<br /><br /><ul><li>A useful field trip guide across the Barrovian metamorphic sequence of Dutchess county. Good general introduction to the geology of the area.</li>
</ul><strong>Additional Resources:</strong><br />Whitney, D.L., Mechum, T.A., Keuhner, S.M., and Dilek, Y.R., 1996, Progressive metamorphism of pelitic rocks from protolith to granulite facies, Dutchess County, New York, USA: constraints on the timing of fluid infiltration during regional metamorphism, Journal of Metamorphic Geology, v. 14, p. 163-181. <a href="http://dx.doi.org/">http://dx.doi.org/<span>10.1046/j.1525-1314.1996.05836.x</span></a><br /><br /><ul><li>A fairly general look at the progressive metamorphism in Dutchess County by one of the foremost workers in the area.</li>
</ul><br />Knopf, E.B., 1927, Some recent work in the Taconic area: American Journal of Science, v. 41, p. 42-458. <a href="http://dx.doi.org/">http://dx.doi.org/<span>10.2475/ajs.s5-14.84.429</span></a><br /><br /><ul><li>One of the first articles to describle the Dutchess County rocks as a "classic" Barrovian sequence. </li>
</ul><br />Ghent, E.D., Stout, M.Z., 1981, Geobarometry and geothermometry of plagioclase-biotite-garnet-muscovite assemblages, Contributions to Mineralogy and Petrology, v. 76, p. 92-97. <a href="http://dx.doi.org/">http://dx.doi.org/<span>10.1007/BF00373688</span></a><br /><br /><br /><ul><li>Work constraining the pressure and temperature paths of metamorphism in the sequence through equilibrium assemblages. This work was found to be in agreement with other equilibrium assemblage PT paths.</li>
</ul><br />Whitney, D.L., Mechum, T.A., Dilek, Y.R., and Keuhner, S.M., 1996, Modification of garnet during regional metamorphism in garnet through sillimanite-zone rocks, Dutchess County, New York, American Mineralogist, v. 81, p. 696-705. <a href="http://www.minsocam.org/MSA/AmMin/TOC/Articles_Free/1996/Whitney_p696-705_96.pdf"> http://www.minsocam.org/MSA/AmMin/TOC/Articles_Free/1996/Whitney_p696-705_96.pdf</a><br /><br /><ul><li>Work by Whitney on changes in PTX conditions leading to modification of garnet in the metamorphic sequence. Garnet is widely distributed through the sequence, which makes it a useful marker for tracking these changes.</li>
</ul>
Rock
A physical material with a mineral composition.
Unit
Formation or other descriptive rock category
Barrovian Metamorphic Sequence
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/.
Identifier
An unambiguous reference to the resource within a given context
DUCO-8
Title
A name given to the resource
Staurolite chloritoid schist
Spatial Coverage
Spatial characteristics of the resource.
Dutchess Co., NY
Contributor
An entity responsible for making contributions to the resource
Western Minerals
Is Part Of
A related resource in which the described resource is physically or logically included.
<a href="http://geosciencecollections.milne-library.org/collections/show/18">Barrovian Metamorphic Sequence--Dutchess County, New York</a>
Description
An account of the resource
Schist bearing both staurolite and chloritoid. This marks the first appearance of staurolite in the metamorphic sequence. Also contains garnet, muscovite, chlorite, biotite, feldspar, and quartz. The assemblage in not in equilibrium.
The thin section shows large chloritoid grains with staurolite (an assemblage not in equilibrium). Fine grained muscovite and biotite are also present, along with micro-crystalline quartz and several graphite strings.
This rock is right at the transition between the garnet-staurolite zones in the Barrovian metamorphic sequence (intermediate (increasing) metamorphism).
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals Inc.
-
https://geosciencecollections.milne-library.org/files/original/7354194eb0e26f78030566ded7fb8832.JPG
79ce4ff7427ab687f5fd38a19799f143
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
DUCO-7 hand sample of chloritoid schist
https://geosciencecollections.milne-library.org/files/original/fc7954a8f158112bcc2c160c5eb27286.png
c024cabaf18f6334ab6d5b9518b3699d
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
ppl / xpl
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
(DUCO) Barrovian Metamorphic Sequence -- Dutchess County, New York
Contributor
An entity responsible for making contributions to the resource
Western Minerals, Inc.
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals, Inc.
Description
An account of the resource
A classic example of Barrovian-type metamorphism in Dutchess County, NY associated with the Taconic orogeny. A Barrovian metamorphic sequence displays gradual pressure and temperature increase along the metamorphic gradient, and occurs during regional metamorphism. These zones of pressure and temperature increase are recognizable by the characteristic minerals that accompany them. Dutchess County, NY contains an unusually complete sequence.
This collection contains metamorphic rocks from chlorite grade to sillimanite grade in a tight spatial window which records the regional metamorphic gradient increasing from WNW to ESE. This collection also contains some rocks that mirror the protoliths of the schists and quartzites of the sequence (shales and graywacke).
Date
A point or period of time associated with an event in the lifecycle of the resource
1970
Spatial Coverage
Spatial characteristics of the resource.
Dutchess County, New York
Temporal Coverage
Temporal characteristics of the resource.
450-430 Ma
References
A related resource that is referenced, cited, or otherwise pointed to by the described resource.
<strong>Start Here:</strong> <br />Vollmer, F. W., and Walker, J., 2009, The classic Barrovian metamorphic sequence of Dutchess County and its structural and stratigraphic context in the Taconic Orogeny. In Guidebook—New York State Geological Association Meeting, v. 81, p. 11-1. <br /><a href="http://www2.newpaltz.edu/~vollmerf/papers/Vollmer_and_Walker_2009_NYSGA.pdf">http://www2.newpaltz.edu/~vollmerf/papers/Vollmer_and_Walker_2009_NYSGA.pdf</a> (accessed March 15th, 2015)<br /><br /><ul><li>A useful field trip guide across the Barrovian metamorphic sequence of Dutchess county. Good general introduction to the geology of the area.</li>
</ul><strong>Additional Resources:</strong><br />Whitney, D.L., Mechum, T.A., Keuhner, S.M., and Dilek, Y.R., 1996, Progressive metamorphism of pelitic rocks from protolith to granulite facies, Dutchess County, New York, USA: constraints on the timing of fluid infiltration during regional metamorphism, Journal of Metamorphic Geology, v. 14, p. 163-181. <a href="http://dx.doi.org/">http://dx.doi.org/<span>10.1046/j.1525-1314.1996.05836.x</span></a><br /><br /><ul><li>A fairly general look at the progressive metamorphism in Dutchess County by one of the foremost workers in the area.</li>
</ul><br />Knopf, E.B., 1927, Some recent work in the Taconic area: American Journal of Science, v. 41, p. 42-458. <a href="http://dx.doi.org/">http://dx.doi.org/<span>10.2475/ajs.s5-14.84.429</span></a><br /><br /><ul><li>One of the first articles to describle the Dutchess County rocks as a "classic" Barrovian sequence. </li>
</ul><br />Ghent, E.D., Stout, M.Z., 1981, Geobarometry and geothermometry of plagioclase-biotite-garnet-muscovite assemblages, Contributions to Mineralogy and Petrology, v. 76, p. 92-97. <a href="http://dx.doi.org/">http://dx.doi.org/<span>10.1007/BF00373688</span></a><br /><br /><br /><ul><li>Work constraining the pressure and temperature paths of metamorphism in the sequence through equilibrium assemblages. This work was found to be in agreement with other equilibrium assemblage PT paths.</li>
</ul><br />Whitney, D.L., Mechum, T.A., Dilek, Y.R., and Keuhner, S.M., 1996, Modification of garnet during regional metamorphism in garnet through sillimanite-zone rocks, Dutchess County, New York, American Mineralogist, v. 81, p. 696-705. <a href="http://www.minsocam.org/MSA/AmMin/TOC/Articles_Free/1996/Whitney_p696-705_96.pdf"> http://www.minsocam.org/MSA/AmMin/TOC/Articles_Free/1996/Whitney_p696-705_96.pdf</a><br /><br /><ul><li>Work by Whitney on changes in PTX conditions leading to modification of garnet in the metamorphic sequence. Garnet is widely distributed through the sequence, which makes it a useful marker for tracking these changes.</li>
</ul>
Rock
A physical material with a mineral composition.
Unit
Formation or other descriptive rock category
Barrovian Metamorphic Sequence
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/.
Identifier
An unambiguous reference to the resource within a given context
DUCO-7
Title
A name given to the resource
Chloritoid schist
Spatial Coverage
Spatial characteristics of the resource.
Dutchess Co., NY
Contributor
An entity responsible for making contributions to the resource
Western Minerals
Is Part Of
A related resource in which the described resource is physically or logically included.
<a href="http://geosciencecollections.milne-library.org/collections/show/18">Barrovian Metamorphic Sequence--Dutchess County, New York</a>
Description
An account of the resource
Schist with coarse chloritoid crystals (up to 1/8 inch) without preferred orientation. These crystals grow across the foliation developed in the schist, but appear deformed. Chloritoid is a silicate mineral made in metamorphism. It also contains garnet, muscovite, chlorite, feldspar, and quartz.
The thin section shows a large chloritoid grain, and euhedral garnet. Fine-grained muscovite and biotite are present, along with strings of an opaque, likely graphite.
This rock is from the garnet zone in the Barrovian metamorphic sequence (intermediate metamorphism).
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals Inc.
-
https://geosciencecollections.milne-library.org/files/original/54282253ffcdc5848e5cf61b2187ef47.JPG
fb717c3880667b6ea6624d0df1c95c79
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
DUCO-6 hand sample of garnet biotite schist
https://geosciencecollections.milne-library.org/files/original/971e9053a6e12aa290522568d50a4703.png
63e23c43bd4758597b020e63ebbf23d4
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
ppl / xpl
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
(DUCO) Barrovian Metamorphic Sequence -- Dutchess County, New York
Contributor
An entity responsible for making contributions to the resource
Western Minerals, Inc.
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals, Inc.
Description
An account of the resource
A classic example of Barrovian-type metamorphism in Dutchess County, NY associated with the Taconic orogeny. A Barrovian metamorphic sequence displays gradual pressure and temperature increase along the metamorphic gradient, and occurs during regional metamorphism. These zones of pressure and temperature increase are recognizable by the characteristic minerals that accompany them. Dutchess County, NY contains an unusually complete sequence.
This collection contains metamorphic rocks from chlorite grade to sillimanite grade in a tight spatial window which records the regional metamorphic gradient increasing from WNW to ESE. This collection also contains some rocks that mirror the protoliths of the schists and quartzites of the sequence (shales and graywacke).
Date
A point or period of time associated with an event in the lifecycle of the resource
1970
Spatial Coverage
Spatial characteristics of the resource.
Dutchess County, New York
Temporal Coverage
Temporal characteristics of the resource.
450-430 Ma
References
A related resource that is referenced, cited, or otherwise pointed to by the described resource.
<strong>Start Here:</strong> <br />Vollmer, F. W., and Walker, J., 2009, The classic Barrovian metamorphic sequence of Dutchess County and its structural and stratigraphic context in the Taconic Orogeny. In Guidebook—New York State Geological Association Meeting, v. 81, p. 11-1. <br /><a href="http://www2.newpaltz.edu/~vollmerf/papers/Vollmer_and_Walker_2009_NYSGA.pdf">http://www2.newpaltz.edu/~vollmerf/papers/Vollmer_and_Walker_2009_NYSGA.pdf</a> (accessed March 15th, 2015)<br /><br /><ul><li>A useful field trip guide across the Barrovian metamorphic sequence of Dutchess county. Good general introduction to the geology of the area.</li>
</ul><strong>Additional Resources:</strong><br />Whitney, D.L., Mechum, T.A., Keuhner, S.M., and Dilek, Y.R., 1996, Progressive metamorphism of pelitic rocks from protolith to granulite facies, Dutchess County, New York, USA: constraints on the timing of fluid infiltration during regional metamorphism, Journal of Metamorphic Geology, v. 14, p. 163-181. <a href="http://dx.doi.org/">http://dx.doi.org/<span>10.1046/j.1525-1314.1996.05836.x</span></a><br /><br /><ul><li>A fairly general look at the progressive metamorphism in Dutchess County by one of the foremost workers in the area.</li>
</ul><br />Knopf, E.B., 1927, Some recent work in the Taconic area: American Journal of Science, v. 41, p. 42-458. <a href="http://dx.doi.org/">http://dx.doi.org/<span>10.2475/ajs.s5-14.84.429</span></a><br /><br /><ul><li>One of the first articles to describle the Dutchess County rocks as a "classic" Barrovian sequence. </li>
</ul><br />Ghent, E.D., Stout, M.Z., 1981, Geobarometry and geothermometry of plagioclase-biotite-garnet-muscovite assemblages, Contributions to Mineralogy and Petrology, v. 76, p. 92-97. <a href="http://dx.doi.org/">http://dx.doi.org/<span>10.1007/BF00373688</span></a><br /><br /><br /><ul><li>Work constraining the pressure and temperature paths of metamorphism in the sequence through equilibrium assemblages. This work was found to be in agreement with other equilibrium assemblage PT paths.</li>
</ul><br />Whitney, D.L., Mechum, T.A., Dilek, Y.R., and Keuhner, S.M., 1996, Modification of garnet during regional metamorphism in garnet through sillimanite-zone rocks, Dutchess County, New York, American Mineralogist, v. 81, p. 696-705. <a href="http://www.minsocam.org/MSA/AmMin/TOC/Articles_Free/1996/Whitney_p696-705_96.pdf"> http://www.minsocam.org/MSA/AmMin/TOC/Articles_Free/1996/Whitney_p696-705_96.pdf</a><br /><br /><ul><li>Work by Whitney on changes in PTX conditions leading to modification of garnet in the metamorphic sequence. Garnet is widely distributed through the sequence, which makes it a useful marker for tracking these changes.</li>
</ul>
Rock
A physical material with a mineral composition.
Unit
Formation or other descriptive rock category
Barrovian Metamorphic Sequence
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/.
Identifier
An unambiguous reference to the resource within a given context
DUCO-6
Title
A name given to the resource
Garnet biotite schist
Spatial Coverage
Spatial characteristics of the resource.
Dutchess Co., NY
Contributor
An entity responsible for making contributions to the resource
Western Minerals
Is Part Of
A related resource in which the described resource is physically or logically included.
<a href="http://geosciencecollections.milne-library.org/collections/show/18">Barrovian Metamorphic Sequence--Dutchess County, New York</a>
Description
An account of the resource
Schist with sparse garnet. This schist is darker and graphitic. It also contains biotite, chlorite, muscovite, feldspar, and quartz.
The thin section shows several large biotite grains with an included garnet, small quartz grains, muscovite, and many fluid inclusions.
This rock is from the garnet zone in the Barrovian metamorphic sequence (intermediate metamorphism).
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals Inc.
-
https://geosciencecollections.milne-library.org/files/original/190641d1ddf78964504e2c9ed30e8a60.JPG
b98d04b346a6e28fd7ae31a817430fda
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
DUCO-5 hand sample of graphitic slate
https://geosciencecollections.milne-library.org/files/original/979dd870eea3c6f6666084784eaa8f73.png
5b429a8214aef5fd0541c40fd1ef51b7
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
ppl / xpl
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
(DUCO) Barrovian Metamorphic Sequence -- Dutchess County, New York
Contributor
An entity responsible for making contributions to the resource
Western Minerals, Inc.
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals, Inc.
Description
An account of the resource
A classic example of Barrovian-type metamorphism in Dutchess County, NY associated with the Taconic orogeny. A Barrovian metamorphic sequence displays gradual pressure and temperature increase along the metamorphic gradient, and occurs during regional metamorphism. These zones of pressure and temperature increase are recognizable by the characteristic minerals that accompany them. Dutchess County, NY contains an unusually complete sequence.
This collection contains metamorphic rocks from chlorite grade to sillimanite grade in a tight spatial window which records the regional metamorphic gradient increasing from WNW to ESE. This collection also contains some rocks that mirror the protoliths of the schists and quartzites of the sequence (shales and graywacke).
Date
A point or period of time associated with an event in the lifecycle of the resource
1970
Spatial Coverage
Spatial characteristics of the resource.
Dutchess County, New York
Temporal Coverage
Temporal characteristics of the resource.
450-430 Ma
References
A related resource that is referenced, cited, or otherwise pointed to by the described resource.
<strong>Start Here:</strong> <br />Vollmer, F. W., and Walker, J., 2009, The classic Barrovian metamorphic sequence of Dutchess County and its structural and stratigraphic context in the Taconic Orogeny. In Guidebook—New York State Geological Association Meeting, v. 81, p. 11-1. <br /><a href="http://www2.newpaltz.edu/~vollmerf/papers/Vollmer_and_Walker_2009_NYSGA.pdf">http://www2.newpaltz.edu/~vollmerf/papers/Vollmer_and_Walker_2009_NYSGA.pdf</a> (accessed March 15th, 2015)<br /><br /><ul><li>A useful field trip guide across the Barrovian metamorphic sequence of Dutchess county. Good general introduction to the geology of the area.</li>
</ul><strong>Additional Resources:</strong><br />Whitney, D.L., Mechum, T.A., Keuhner, S.M., and Dilek, Y.R., 1996, Progressive metamorphism of pelitic rocks from protolith to granulite facies, Dutchess County, New York, USA: constraints on the timing of fluid infiltration during regional metamorphism, Journal of Metamorphic Geology, v. 14, p. 163-181. <a href="http://dx.doi.org/">http://dx.doi.org/<span>10.1046/j.1525-1314.1996.05836.x</span></a><br /><br /><ul><li>A fairly general look at the progressive metamorphism in Dutchess County by one of the foremost workers in the area.</li>
</ul><br />Knopf, E.B., 1927, Some recent work in the Taconic area: American Journal of Science, v. 41, p. 42-458. <a href="http://dx.doi.org/">http://dx.doi.org/<span>10.2475/ajs.s5-14.84.429</span></a><br /><br /><ul><li>One of the first articles to describle the Dutchess County rocks as a "classic" Barrovian sequence. </li>
</ul><br />Ghent, E.D., Stout, M.Z., 1981, Geobarometry and geothermometry of plagioclase-biotite-garnet-muscovite assemblages, Contributions to Mineralogy and Petrology, v. 76, p. 92-97. <a href="http://dx.doi.org/">http://dx.doi.org/<span>10.1007/BF00373688</span></a><br /><br /><br /><ul><li>Work constraining the pressure and temperature paths of metamorphism in the sequence through equilibrium assemblages. This work was found to be in agreement with other equilibrium assemblage PT paths.</li>
</ul><br />Whitney, D.L., Mechum, T.A., Dilek, Y.R., and Keuhner, S.M., 1996, Modification of garnet during regional metamorphism in garnet through sillimanite-zone rocks, Dutchess County, New York, American Mineralogist, v. 81, p. 696-705. <a href="http://www.minsocam.org/MSA/AmMin/TOC/Articles_Free/1996/Whitney_p696-705_96.pdf"> http://www.minsocam.org/MSA/AmMin/TOC/Articles_Free/1996/Whitney_p696-705_96.pdf</a><br /><br /><ul><li>Work by Whitney on changes in PTX conditions leading to modification of garnet in the metamorphic sequence. Garnet is widely distributed through the sequence, which makes it a useful marker for tracking these changes.</li>
</ul>
Rock
A physical material with a mineral composition.
Unit
Formation or other descriptive rock category
Barrovian Metamorphic Sequence
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/.
Identifier
An unambiguous reference to the resource within a given context
DUCO-5
Title
A name given to the resource
Graphitic slate
Spatial Coverage
Spatial characteristics of the resource.
Dutchess Co., NY
Contributor
An entity responsible for making contributions to the resource
Western Minerals
Is Part Of
A related resource in which the described resource is physically or logically included.
<a href="http://geosciencecollections.milne-library.org/collections/show/18">Barrovian Metamorphic Sequence--Dutchess County, New York</a>
Description
An account of the resource
A highly graphitic slate in the Walloomsac slates. Contains pyrite. This rock also contains biotite, chlorite, muscovite, quartz, ilmenite, and pyrite.
The thin section shows large biotite grains, and chlorite muscovite, and quartz. Fluid inclusions are pervasive.
This rock is from the biotite zone of the Barrovian sequence (low-intermediate metamorphism).
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals Inc.
-
https://geosciencecollections.milne-library.org/files/original/22e62405382d1a0da8b99efbfba4166b.JPG
5e2b693dbe05f5e62f431e9675da4480
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
DUCO-4 hand sample of kink fold in slate
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
(DUCO) Barrovian Metamorphic Sequence -- Dutchess County, New York
Contributor
An entity responsible for making contributions to the resource
Western Minerals, Inc.
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals, Inc.
Description
An account of the resource
A classic example of Barrovian-type metamorphism in Dutchess County, NY associated with the Taconic orogeny. A Barrovian metamorphic sequence displays gradual pressure and temperature increase along the metamorphic gradient, and occurs during regional metamorphism. These zones of pressure and temperature increase are recognizable by the characteristic minerals that accompany them. Dutchess County, NY contains an unusually complete sequence.
This collection contains metamorphic rocks from chlorite grade to sillimanite grade in a tight spatial window which records the regional metamorphic gradient increasing from WNW to ESE. This collection also contains some rocks that mirror the protoliths of the schists and quartzites of the sequence (shales and graywacke).
Date
A point or period of time associated with an event in the lifecycle of the resource
1970
Spatial Coverage
Spatial characteristics of the resource.
Dutchess County, New York
Temporal Coverage
Temporal characteristics of the resource.
450-430 Ma
References
A related resource that is referenced, cited, or otherwise pointed to by the described resource.
<strong>Start Here:</strong> <br />Vollmer, F. W., and Walker, J., 2009, The classic Barrovian metamorphic sequence of Dutchess County and its structural and stratigraphic context in the Taconic Orogeny. In Guidebook—New York State Geological Association Meeting, v. 81, p. 11-1. <br /><a href="http://www2.newpaltz.edu/~vollmerf/papers/Vollmer_and_Walker_2009_NYSGA.pdf">http://www2.newpaltz.edu/~vollmerf/papers/Vollmer_and_Walker_2009_NYSGA.pdf</a> (accessed March 15th, 2015)<br /><br /><ul><li>A useful field trip guide across the Barrovian metamorphic sequence of Dutchess county. Good general introduction to the geology of the area.</li>
</ul><strong>Additional Resources:</strong><br />Whitney, D.L., Mechum, T.A., Keuhner, S.M., and Dilek, Y.R., 1996, Progressive metamorphism of pelitic rocks from protolith to granulite facies, Dutchess County, New York, USA: constraints on the timing of fluid infiltration during regional metamorphism, Journal of Metamorphic Geology, v. 14, p. 163-181. <a href="http://dx.doi.org/">http://dx.doi.org/<span>10.1046/j.1525-1314.1996.05836.x</span></a><br /><br /><ul><li>A fairly general look at the progressive metamorphism in Dutchess County by one of the foremost workers in the area.</li>
</ul><br />Knopf, E.B., 1927, Some recent work in the Taconic area: American Journal of Science, v. 41, p. 42-458. <a href="http://dx.doi.org/">http://dx.doi.org/<span>10.2475/ajs.s5-14.84.429</span></a><br /><br /><ul><li>One of the first articles to describle the Dutchess County rocks as a "classic" Barrovian sequence. </li>
</ul><br />Ghent, E.D., Stout, M.Z., 1981, Geobarometry and geothermometry of plagioclase-biotite-garnet-muscovite assemblages, Contributions to Mineralogy and Petrology, v. 76, p. 92-97. <a href="http://dx.doi.org/">http://dx.doi.org/<span>10.1007/BF00373688</span></a><br /><br /><br /><ul><li>Work constraining the pressure and temperature paths of metamorphism in the sequence through equilibrium assemblages. This work was found to be in agreement with other equilibrium assemblage PT paths.</li>
</ul><br />Whitney, D.L., Mechum, T.A., Dilek, Y.R., and Keuhner, S.M., 1996, Modification of garnet during regional metamorphism in garnet through sillimanite-zone rocks, Dutchess County, New York, American Mineralogist, v. 81, p. 696-705. <a href="http://www.minsocam.org/MSA/AmMin/TOC/Articles_Free/1996/Whitney_p696-705_96.pdf"> http://www.minsocam.org/MSA/AmMin/TOC/Articles_Free/1996/Whitney_p696-705_96.pdf</a><br /><br /><ul><li>Work by Whitney on changes in PTX conditions leading to modification of garnet in the metamorphic sequence. Garnet is widely distributed through the sequence, which makes it a useful marker for tracking these changes.</li>
</ul>
Rock
A physical material with a mineral composition.
Unit
Formation or other descriptive rock category
Barrovian Metamorphic Sequence
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/.
Identifier
An unambiguous reference to the resource within a given context
DUCO-4
Title
A name given to the resource
Slate
Spatial Coverage
Spatial characteristics of the resource.
Dutchess Co., NY
Contributor
An entity responsible for making contributions to the resource
Western Minerals
Is Part Of
A related resource in which the described resource is physically or logically included.
<a href="http://geosciencecollections.milne-library.org/collections/show/18">Barrovian Metamorphic Sequence--Dutchess County, New York</a>
Description
An account of the resource
Kink fold in a slate from the Mt. Merino Member.
This rock is from the chlorite zone of the Barrovian metamorphic sequence (low metamorphism).
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals Inc.
-
https://geosciencecollections.milne-library.org/files/original/aee85236df681415674deb65ab979c40.JPG
79673125cb0e175dbf35ff07c003efe0
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
DUCO-3 hand sample of graywacke
https://geosciencecollections.milne-library.org/files/original/9de10e31bd8eda9dc98bcf63562f272e.png
b7fa7018e6d828b9f417f69151f327e6
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
xpl / ppl
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
(DUCO) Barrovian Metamorphic Sequence -- Dutchess County, New York
Contributor
An entity responsible for making contributions to the resource
Western Minerals, Inc.
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals, Inc.
Description
An account of the resource
A classic example of Barrovian-type metamorphism in Dutchess County, NY associated with the Taconic orogeny. A Barrovian metamorphic sequence displays gradual pressure and temperature increase along the metamorphic gradient, and occurs during regional metamorphism. These zones of pressure and temperature increase are recognizable by the characteristic minerals that accompany them. Dutchess County, NY contains an unusually complete sequence.
This collection contains metamorphic rocks from chlorite grade to sillimanite grade in a tight spatial window which records the regional metamorphic gradient increasing from WNW to ESE. This collection also contains some rocks that mirror the protoliths of the schists and quartzites of the sequence (shales and graywacke).
Date
A point or period of time associated with an event in the lifecycle of the resource
1970
Spatial Coverage
Spatial characteristics of the resource.
Dutchess County, New York
Temporal Coverage
Temporal characteristics of the resource.
450-430 Ma
References
A related resource that is referenced, cited, or otherwise pointed to by the described resource.
<strong>Start Here:</strong> <br />Vollmer, F. W., and Walker, J., 2009, The classic Barrovian metamorphic sequence of Dutchess County and its structural and stratigraphic context in the Taconic Orogeny. In Guidebook—New York State Geological Association Meeting, v. 81, p. 11-1. <br /><a href="http://www2.newpaltz.edu/~vollmerf/papers/Vollmer_and_Walker_2009_NYSGA.pdf">http://www2.newpaltz.edu/~vollmerf/papers/Vollmer_and_Walker_2009_NYSGA.pdf</a> (accessed March 15th, 2015)<br /><br /><ul><li>A useful field trip guide across the Barrovian metamorphic sequence of Dutchess county. Good general introduction to the geology of the area.</li>
</ul><strong>Additional Resources:</strong><br />Whitney, D.L., Mechum, T.A., Keuhner, S.M., and Dilek, Y.R., 1996, Progressive metamorphism of pelitic rocks from protolith to granulite facies, Dutchess County, New York, USA: constraints on the timing of fluid infiltration during regional metamorphism, Journal of Metamorphic Geology, v. 14, p. 163-181. <a href="http://dx.doi.org/">http://dx.doi.org/<span>10.1046/j.1525-1314.1996.05836.x</span></a><br /><br /><ul><li>A fairly general look at the progressive metamorphism in Dutchess County by one of the foremost workers in the area.</li>
</ul><br />Knopf, E.B., 1927, Some recent work in the Taconic area: American Journal of Science, v. 41, p. 42-458. <a href="http://dx.doi.org/">http://dx.doi.org/<span>10.2475/ajs.s5-14.84.429</span></a><br /><br /><ul><li>One of the first articles to describle the Dutchess County rocks as a "classic" Barrovian sequence. </li>
</ul><br />Ghent, E.D., Stout, M.Z., 1981, Geobarometry and geothermometry of plagioclase-biotite-garnet-muscovite assemblages, Contributions to Mineralogy and Petrology, v. 76, p. 92-97. <a href="http://dx.doi.org/">http://dx.doi.org/<span>10.1007/BF00373688</span></a><br /><br /><br /><ul><li>Work constraining the pressure and temperature paths of metamorphism in the sequence through equilibrium assemblages. This work was found to be in agreement with other equilibrium assemblage PT paths.</li>
</ul><br />Whitney, D.L., Mechum, T.A., Dilek, Y.R., and Keuhner, S.M., 1996, Modification of garnet during regional metamorphism in garnet through sillimanite-zone rocks, Dutchess County, New York, American Mineralogist, v. 81, p. 696-705. <a href="http://www.minsocam.org/MSA/AmMin/TOC/Articles_Free/1996/Whitney_p696-705_96.pdf"> http://www.minsocam.org/MSA/AmMin/TOC/Articles_Free/1996/Whitney_p696-705_96.pdf</a><br /><br /><ul><li>Work by Whitney on changes in PTX conditions leading to modification of garnet in the metamorphic sequence. Garnet is widely distributed through the sequence, which makes it a useful marker for tracking these changes.</li>
</ul>
Rock
A physical material with a mineral composition.
Unit
Formation or other descriptive rock category
Barrovian Metamorphic Sequence
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/.
Identifier
An unambiguous reference to the resource within a given context
DUCO-3
Title
A name given to the resource
Graywacke
Spatial Coverage
Spatial characteristics of the resource.
Dutchess Co., NY
Contributor
An entity responsible for making contributions to the resource
Western Minerals
Is Part Of
A related resource in which the described resource is physically or logically included.
<a href="http://geosciencecollections.milne-library.org/collections/show/18">Barrovian Metamorphic Sequence--Dutchess County, New York</a>
Description
An account of the resource
The graywacke facies in the Mt. Merino member (where sample 4 also comes from). Graywacke is a hard, dark-colored sandstone. This sandstone represents a similar rock to the protolith for the quartzite of sample 10.
The thin section shows quartz, feldspar, and lithics.
This rock is from the chlorite zone of the Barrovian metamorphic sequence (low metamorphism).
This rock was collected from the west end of a large road cut where samples 1 and 2 were also collected from.
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals Inc.
-
https://geosciencecollections.milne-library.org/files/original/d2121e3b3193cb319b0f6ea9c8c30795.JPG
e4c85f533d498eae5f5dd59d68374af1
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
DUCO-2 hand sample of green shale
https://geosciencecollections.milne-library.org/files/original/6f8442b4cb235b05d63ec51d00c696f4.png
6d9d1d50a91bdc675c171165c085e2a8
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
xpl / ppl
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
(DUCO) Barrovian Metamorphic Sequence -- Dutchess County, New York
Contributor
An entity responsible for making contributions to the resource
Western Minerals, Inc.
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals, Inc.
Description
An account of the resource
A classic example of Barrovian-type metamorphism in Dutchess County, NY associated with the Taconic orogeny. A Barrovian metamorphic sequence displays gradual pressure and temperature increase along the metamorphic gradient, and occurs during regional metamorphism. These zones of pressure and temperature increase are recognizable by the characteristic minerals that accompany them. Dutchess County, NY contains an unusually complete sequence.
This collection contains metamorphic rocks from chlorite grade to sillimanite grade in a tight spatial window which records the regional metamorphic gradient increasing from WNW to ESE. This collection also contains some rocks that mirror the protoliths of the schists and quartzites of the sequence (shales and graywacke).
Date
A point or period of time associated with an event in the lifecycle of the resource
1970
Spatial Coverage
Spatial characteristics of the resource.
Dutchess County, New York
Temporal Coverage
Temporal characteristics of the resource.
450-430 Ma
References
A related resource that is referenced, cited, or otherwise pointed to by the described resource.
<strong>Start Here:</strong> <br />Vollmer, F. W., and Walker, J., 2009, The classic Barrovian metamorphic sequence of Dutchess County and its structural and stratigraphic context in the Taconic Orogeny. In Guidebook—New York State Geological Association Meeting, v. 81, p. 11-1. <br /><a href="http://www2.newpaltz.edu/~vollmerf/papers/Vollmer_and_Walker_2009_NYSGA.pdf">http://www2.newpaltz.edu/~vollmerf/papers/Vollmer_and_Walker_2009_NYSGA.pdf</a> (accessed March 15th, 2015)<br /><br /><ul><li>A useful field trip guide across the Barrovian metamorphic sequence of Dutchess county. Good general introduction to the geology of the area.</li>
</ul><strong>Additional Resources:</strong><br />Whitney, D.L., Mechum, T.A., Keuhner, S.M., and Dilek, Y.R., 1996, Progressive metamorphism of pelitic rocks from protolith to granulite facies, Dutchess County, New York, USA: constraints on the timing of fluid infiltration during regional metamorphism, Journal of Metamorphic Geology, v. 14, p. 163-181. <a href="http://dx.doi.org/">http://dx.doi.org/<span>10.1046/j.1525-1314.1996.05836.x</span></a><br /><br /><ul><li>A fairly general look at the progressive metamorphism in Dutchess County by one of the foremost workers in the area.</li>
</ul><br />Knopf, E.B., 1927, Some recent work in the Taconic area: American Journal of Science, v. 41, p. 42-458. <a href="http://dx.doi.org/">http://dx.doi.org/<span>10.2475/ajs.s5-14.84.429</span></a><br /><br /><ul><li>One of the first articles to describle the Dutchess County rocks as a "classic" Barrovian sequence. </li>
</ul><br />Ghent, E.D., Stout, M.Z., 1981, Geobarometry and geothermometry of plagioclase-biotite-garnet-muscovite assemblages, Contributions to Mineralogy and Petrology, v. 76, p. 92-97. <a href="http://dx.doi.org/">http://dx.doi.org/<span>10.1007/BF00373688</span></a><br /><br /><br /><ul><li>Work constraining the pressure and temperature paths of metamorphism in the sequence through equilibrium assemblages. This work was found to be in agreement with other equilibrium assemblage PT paths.</li>
</ul><br />Whitney, D.L., Mechum, T.A., Dilek, Y.R., and Keuhner, S.M., 1996, Modification of garnet during regional metamorphism in garnet through sillimanite-zone rocks, Dutchess County, New York, American Mineralogist, v. 81, p. 696-705. <a href="http://www.minsocam.org/MSA/AmMin/TOC/Articles_Free/1996/Whitney_p696-705_96.pdf"> http://www.minsocam.org/MSA/AmMin/TOC/Articles_Free/1996/Whitney_p696-705_96.pdf</a><br /><br /><ul><li>Work by Whitney on changes in PTX conditions leading to modification of garnet in the metamorphic sequence. Garnet is widely distributed through the sequence, which makes it a useful marker for tracking these changes.</li>
</ul>
Rock
A physical material with a mineral composition.
Unit
Formation or other descriptive rock category
Barrovian Metamorphic Sequence
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/.
Identifier
An unambiguous reference to the resource within a given context
DUCO-2
Title
A name given to the resource
Green shale
Spatial Coverage
Spatial characteristics of the resource.
Dutchess Co., NY
Contributor
An entity responsible for making contributions to the resource
Western Minerals
Is Part Of
A related resource in which the described resource is physically or logically included.
<a href="http://geosciencecollections.milne-library.org/collections/show/18">Barrovian Metamorphic Sequence--Dutchess County, New York</a>
Description
An account of the resource
Green shale of the Indian River member of the Normanskill formation. This shale contains muscovite, chlorite, plagioclase, and quartz.
The thin section shows quartz and biotite with some minor opaques.
This rock is from the chlorite zone of the Barrovian metamorphic sequence (low metamorphism).
This rock was collected from the east end of a large road cut where samples 1 and 3 were also collected from.
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals Inc.
-
https://geosciencecollections.milne-library.org/files/original/3b3e56d9ca105e0b279039211b85bf03.png
b4f98b0361b5d07e5d1a058caaa9a178
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
xpl / ppl
https://geosciencecollections.milne-library.org/files/original/d2fcaf97c629f8eaecc8524050a43343.JPG
fcc5902a23beefbd795c6662798f4dfe
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
DUCO-1 hand sample of red shale
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
(DUCO) Barrovian Metamorphic Sequence -- Dutchess County, New York
Contributor
An entity responsible for making contributions to the resource
Western Minerals, Inc.
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals, Inc.
Description
An account of the resource
A classic example of Barrovian-type metamorphism in Dutchess County, NY associated with the Taconic orogeny. A Barrovian metamorphic sequence displays gradual pressure and temperature increase along the metamorphic gradient, and occurs during regional metamorphism. These zones of pressure and temperature increase are recognizable by the characteristic minerals that accompany them. Dutchess County, NY contains an unusually complete sequence.
This collection contains metamorphic rocks from chlorite grade to sillimanite grade in a tight spatial window which records the regional metamorphic gradient increasing from WNW to ESE. This collection also contains some rocks that mirror the protoliths of the schists and quartzites of the sequence (shales and graywacke).
Date
A point or period of time associated with an event in the lifecycle of the resource
1970
Spatial Coverage
Spatial characteristics of the resource.
Dutchess County, New York
Temporal Coverage
Temporal characteristics of the resource.
450-430 Ma
References
A related resource that is referenced, cited, or otherwise pointed to by the described resource.
<strong>Start Here:</strong> <br />Vollmer, F. W., and Walker, J., 2009, The classic Barrovian metamorphic sequence of Dutchess County and its structural and stratigraphic context in the Taconic Orogeny. In Guidebook—New York State Geological Association Meeting, v. 81, p. 11-1. <br /><a href="http://www2.newpaltz.edu/~vollmerf/papers/Vollmer_and_Walker_2009_NYSGA.pdf">http://www2.newpaltz.edu/~vollmerf/papers/Vollmer_and_Walker_2009_NYSGA.pdf</a> (accessed March 15th, 2015)<br /><br /><ul><li>A useful field trip guide across the Barrovian metamorphic sequence of Dutchess county. Good general introduction to the geology of the area.</li>
</ul><strong>Additional Resources:</strong><br />Whitney, D.L., Mechum, T.A., Keuhner, S.M., and Dilek, Y.R., 1996, Progressive metamorphism of pelitic rocks from protolith to granulite facies, Dutchess County, New York, USA: constraints on the timing of fluid infiltration during regional metamorphism, Journal of Metamorphic Geology, v. 14, p. 163-181. <a href="http://dx.doi.org/">http://dx.doi.org/<span>10.1046/j.1525-1314.1996.05836.x</span></a><br /><br /><ul><li>A fairly general look at the progressive metamorphism in Dutchess County by one of the foremost workers in the area.</li>
</ul><br />Knopf, E.B., 1927, Some recent work in the Taconic area: American Journal of Science, v. 41, p. 42-458. <a href="http://dx.doi.org/">http://dx.doi.org/<span>10.2475/ajs.s5-14.84.429</span></a><br /><br /><ul><li>One of the first articles to describle the Dutchess County rocks as a "classic" Barrovian sequence. </li>
</ul><br />Ghent, E.D., Stout, M.Z., 1981, Geobarometry and geothermometry of plagioclase-biotite-garnet-muscovite assemblages, Contributions to Mineralogy and Petrology, v. 76, p. 92-97. <a href="http://dx.doi.org/">http://dx.doi.org/<span>10.1007/BF00373688</span></a><br /><br /><br /><ul><li>Work constraining the pressure and temperature paths of metamorphism in the sequence through equilibrium assemblages. This work was found to be in agreement with other equilibrium assemblage PT paths.</li>
</ul><br />Whitney, D.L., Mechum, T.A., Dilek, Y.R., and Keuhner, S.M., 1996, Modification of garnet during regional metamorphism in garnet through sillimanite-zone rocks, Dutchess County, New York, American Mineralogist, v. 81, p. 696-705. <a href="http://www.minsocam.org/MSA/AmMin/TOC/Articles_Free/1996/Whitney_p696-705_96.pdf"> http://www.minsocam.org/MSA/AmMin/TOC/Articles_Free/1996/Whitney_p696-705_96.pdf</a><br /><br /><ul><li>Work by Whitney on changes in PTX conditions leading to modification of garnet in the metamorphic sequence. Garnet is widely distributed through the sequence, which makes it a useful marker for tracking these changes.</li>
</ul>
Rock
A physical material with a mineral composition.
Unit
Formation or other descriptive rock category
Barrovian Metamorphic Sequence
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/.
Identifier
An unambiguous reference to the resource within a given context
DUCO-1
Title
A name given to the resource
Red shale
Spatial Coverage
Spatial characteristics of the resource.
Dutchess Co., NY
Contributor
An entity responsible for making contributions to the resource
Western Minerals
Is Part Of
A related resource in which the described resource is physically or logically included.
<a href="http://geosciencecollections.milne-library.org/collections/show/18">Barrovian Metamorphic Sequence--Dutchess County, New York</a>
Description
An account of the resource
Red shale from the Indian River member of the Normanskill formation. This rock contains hematite, chlorite, muscovite, plagioclase, and quartz.
The thin section shows muscovite and biotite with some larger quartz grains visible and minor hematite staining.
This rock is from the chlorite zone of the Barrovian metamorphic sequence (low metamorphism).
This rock was collected from the east end of a large road cut which samples 2 and 3 were also collected from.
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals Inc.