- Usage in publication:
-
- New Rambler metagabbro
- Modifications:
-
- Named
- Dominant lithology:
-
- Gabbro
- AAPG geologic province:
-
- Northern Rocky Mountain region
Summary:
Name applied as an informal descriptive term to an interconnected series of mafic bodies in secs 28, 29, 32, and 33, T15N, R79W and secs 4 and 5, T14N, R79W, Albany Co, WY in the Northern Rocky Mountain region. Neither source of geographic name nor location of type locality stated. Geologic map. Is highly altered; all samples analyzed show varying degrees of alteration toward amphibolite; two samples show intense cataclasis. Remnants of clinopyroxene largely altered to amphibolite in some samples. Plagioclase also altered. Is one of several mafic intrusions of Precambrian age common south of the Mullen Creek-Nash Fork shear zone that extend along strike for 10 ft to 1/2 mi or more.
Source: GNU records (USGS DDS-6; Denver GNULEX).
For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.
Asterisk (*) indicates published by U.S. Geological Survey authors.
"No current usage" (†) implies that a name has been abandoned or has fallen into disuse. Former usage and, if known, replacement name given in parentheses ( ).
Slash (/) indicates name conflicts with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005, 2021). May be explained within brackets ([ ]).