- Usage in publication:
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- Central Valley sandstone
- Modifications:
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- Named
- Dominant lithology:
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- Sandstone
- AAPG geologic province:
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- Appalachian basin
Summary:
Named for Central Valley, Orange Co., southeastern NY. Consists of white-weathering, mottled violet, fossiliferous sandstone with a 1-foot bed of white-weathering chert at top. Thickness about 25 ft. Lower contact covered; may rest on beds of New Scotland age or on pre-New Scotland, Upper Silurian strata. Contact with overlying Connelly conglomerate is abrupt. Age is Early Devonian.
Source: GNU records (USGS DDS-6; Reston 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 ([ ]).