| Abstract: | Medium- to high-grade metamorphic rocks that are commonly hornblende-rich, and probably largely of ‘oceanic‘ affinity, are widespread in the southernmost Sierra Nevada, California. These metamorphic rocks are largely amphibolite, mafic and felsic gneiss, granofels, and hypersthene granulite The mineral assemblages suggest that these rocks are at least in part of granulite grade, represent relatively deep crustal levels, and may be exposed parts of the root zone of the Sierra Nevada batholith. Access to the largest area of these rocks is relatively limited and for this reason petrographic data (textures and mineral content based on thin section study) are summarized here. Directions to readily accessible localities are presented, however, where the major metamorphic rock types can be examined and sampled. |
| Genre: | USGS Numbered Series |
| ProdID: | 10921 |
| Citation Author: | Ross, Donald Clarence |
| Citation Contributing Office: | |
| Citation Datum: | |
| Citation Day: | |
| Citation Edition: | - |
| Citation Editor: | |
| Citation End Page: | |
| Citation Issue: | |
| Citation Keywords: | |
| Citation Language: | ENGLISH |
| Citation Larger Work Title: | |
| Citation LatN: | |
| Citation LatS: | |
| Citation LonE: | |
| Citation LonW: | |
| Citation Month: | |
| Citation No Pagination: | |
| Citation Number Of Pages: | |
| Citation Online Only Flag: | |
| Citation Phsyical Description: | 35 p. ill., maps ;28 cm. |
| Citation Projection: | |
| Citation Public Comments: | |
| Citation Publisher: | U.S. Geological Survey, |
| Citation Series: | Open-File Report |
| Citation Series Code: | OFR |
| Citation Series Number: | 83-587 |
| Citation Search Results Text: | Petrographic (thin section) notes on selected samples from hornblende-rich metamorphic terranes in the southernmost Sierra Nevada, California; 1983; OFR; 83-587; Ross, Donald Clarence |
| Citation Start Page: | |
| Citation Volume: | |
| Citation Year: | 1983 |
| Type: | citation/reference |
| Text: | Petrographic (thin section) notes on selected samples from hornblende-rich metamorphic terranes in the southernmost Sierra Nevada, California; 1983; OFR; 83-587; Ross, Donald Clarence |
| URL (THUMBNAIL): | http://pubs.usgs.gov/of/1983/0587/report-thumb.jpg |
| URL (DOCUMENT): | http://pubs.usgs.gov/of/1983/0587/report.pdf |
| Date Other: | Sat, 1 Jan 1994 00:00 -0600 |
| Publisher: | U.S. Geological Survey, |
