Browse Items (1651 total)

http://dl.dropbox.com/u/66399955/NAO-20.JPG
Carbonates (calcite and dolomite), chlorites, garnets, diopside, epidote, serpentine, amphiboles. Very variable compositions in same hand specimen. The rock derives from metamorphism of oficalcitic rocks developed at very high pressures and medium…

http://dl.dropbox.com/u/66399955/NAO-6.JPG
Tectonic-sedimentary breccia of serpentinite modified by hydrothermal events in oceanic environment.

Hand Sample
Hand Sample: Aphanitic dark gray vesicular basalt with olivine crystals scattered throughout. The olivine crystals are most common in this sample than in other samples within the suite. Sample was collected from an olivine-rich zone within Mauna Loa…

Hand Sample
Hand Sample: Aphanitic dark gray vesicular oceanite with phaneritic olivine crystals. Olivine crystals are scattered throughout the sample and are either growing in clusters or as a single crystal. Olivine crystals range in diameter from 0.1cm to…

http://dl.dropbox.com/u/66399955/NAO-5.JPG
Dioritic gabbro with deformational oceanic metamorphism of amphibolitic to greenschist facies and overprinting of prehnite-pumpellite.
Primary phases: plagioclase, clinopyroxene, olivine, ilmenite. Oceanic metamorphic paragenesis: plagioclase,…

ignimbrite layer in a welded tuff

Western Minerals NAO OCR-1.pdf
OCR PDF of supplemental information for the Northern Apennines Ophiolites collection.

1:24000

1:24000

Leucocratic

Especially dark (not typical)

Contains biotite, orthoclase, hornblende, quartz, and titaniferous magnetite
Output Formats

atom, dcmes-xml, json, omeka-xml, rss2