Precambrian rocks in Tenmile Canyon
Journal Article
·
· 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, Journal Name: Colorado School of Mines Quarterly Journal Issue: 1 Vol. 93; ISSN 0163-9153; ISSN CSMQDN
- Country of Publication:
- United States
- Language:
- English
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Tue Dec 31 23:00:00 EST 1991
· Geological Society of America, Abstracts with Programs; (United States)
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