- Usage in publication:
-
- Donner Member
- Modifications:
-
- Named
- Dominant lithology:
-
- Conglomerate
- AAPG geologic province:
-
- Great Basin province
Summary:
Named as 4th from lowermost member (of 6) of Chainman Formation along UT-NV boundary. Consists of molassic conglomerates and coarse clastics which thin eastward away from the ancient Antler orogenic belt. Unit is about 250 ft thick. Overlies Camp Canyon Member; underlies Willow Gap Limestone Member (both new and of Chainman Formation). Age of Chainman Formation is Late Mississippian based on faunal zone analysis.
Source: GNU records (USGS DDS-6; Menlo 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 ([ ]).