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- Usage in publication:
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- /Brushy Canyon Formation, Member
- Modifications:
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- Named
- Dominant lithology:
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- Sandstone
- Conglomerate
- AAPG geologic province:
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- Sierra Nevada province
Summary:
On road log map named as formation of Mariposa Group [of Taliaferro (1933)], Mariposa Co, CA. Consists chiefly of light-green, light-brown, and pinkish tuffaceous sandstone and conglomerate with some muscovite schist derived from rhyolite tuff. Is in contact with metavolcanic rocks of Agua Fria Formation [of underlying Amador Group]. Also is in contact with overlying Mariposa Slate (Mariposa Group). In text referred to as Brushy Canyon Member of Mariposa Formation.
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 ([ ]).