- Usage in publication:
-
- Muskrat Conglomerate Bed*
- Modifications:
-
- Named
- Dominant lithology:
-
- Conglomerate
- AAPG geologic province:
-
- Wind River basin
Summary:
Named as a bed in Puddle Springs Arkose Member of Wind River Formation of latest early Eocene (Lost Cabin) age for exposures at Muskrat Creek, Fremont Co, WY, in south-central Wind River basin. Type section designated at SE1/4 SW1/4 SE1/4 sec 10, T32N, R90W. Is a cobble-boulder conglomerate consisting mostly of granite but also has abundant gneiss. Boulders 2 to 6 ft long are common. Largest one was 13 ft long. Mud balls as much as 3 ft in diameter seen east of Muskrat Creek. Is 19.5 ft thick at type. Is 10 to 20 ft thick along its outcrop. Is about 100 ft above Dry Coyote Conglomerate Bed. Can be traced from Coyote Creek to Conant Creek anticline. May be a mudflow deposit.
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 ([ ]).