- Usage in publication:
-
- S Bar S formation
- Modifications:
-
- Named
- Dominant lithology:
-
- Alluvium
- Sand
- AAPG geologic province:
-
- Great Basin province
Summary:
Named for S Bar S Ranch as formation in Lahontan Valley Group. Type area designated as bluffs of Truckee River Valley, secs.15-16 T21N R24E about 5 mi north of Wadsworth, Washoe Co, NV. Defined as entirely subaerial sediments. Contemporaneous and intertonguing with Eetza Formation, that overlies Paiute Formation and Cocoon Soil with moderate or no unconformity and underlies Wyemaha Formation with local unconformity. Consists of alluvium, some colluvium, and very minor eolian sand. Deposits were informally designated (Morrison, 1961) as alluvium and colluvium of Eetza age. Age given as Pleistocene.
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 ([ ]).