Precambrian rocks in Tenmile Canyon
Journal Article
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· Colorado School of Mines Quarterly
OSTI ID:142139
- Geological Survey, Denver, CO (United States)
This paper describes the geology encountered as part of a geology field trip. The low glaciated knobs a few meters northwest along I-70 in Colorado expose thinly layered medium- and fine-grained hornblende and biotite gneisses and amphibolite cut by numerous light-colored anastomosing dikes. Many layers in the gneisses are conspicuously boudinaged and some display small and medium scale intrafolial isoclines. A string of 1--3 m long pods of coarse amphibolite probably represents a dismembered mafic sill or transposed dike. All of these features indicate intense layer parallel ductile deformation.
- OSTI ID:
- 142139
- Journal Information:
- Colorado School of Mines Quarterly, Vol. 93, Issue 1; Other Information: PBD: 1993
- Country of Publication:
- United States
- Language:
- English
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The Chunky Gal Mountain fault-detachment-normal fault providing evidence for Early-to-Middle Paleozoic extensional unroofing of the eastern Blue Ridge, or folded thrust
Conference
·
Mon Mar 01 00:00:00 EST 1993
· Geological Society of America, Abstracts with Programs; (United States)
·
OSTI ID:142139
Interlayered granitoid gneiss and amphibolite of the Twilight Gneiss: An Early Proterozoic intrusive complex in the western Needle Mountains, southwestern Colorado
Conference
·
Mon Feb 01 00:00:00 EST 1993
· Geological Society of America, Abstracts with Programs; (United States)
·
OSTI ID:142139
The Chunky Gal Mountain fault-detachment-normal fault providing evidence for Early-to-Middle Paleozoic extensional unroofing of the eastern Blue Ridge, or folded thrust
Conference
·
Mon Mar 01 00:00:00 EST 1993
· Geological Society of America, Abstracts with Programs; (United States)
·
OSTI ID:142139