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- Usage in publication:
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- Rough Creek shale member
- Modifications:
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- Original reference
- [Abandoned]
- Dominant lithology:
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- Shale
- AAPG geologic province:
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- Permian basin
Summary:
Pg. 45. Rough Creek shale member of Tesnus formation. Hard, compact, and brittle dark-green, occasionally black shale, 865 feet thick. Basal member of Tesnus formation. Probably disappears in eastern part of Marathon region. Age is Pennsylvanian.
[Type locality not stated. Named from exposures on Rough Creek, Dove Mountain quadrangle, Marathon region, Brewster Co., western TX.]
[GNC remark (ca. 1936, US geologic names lexicon, USGS Bull. 896, p. 1848): Because of prior use of Rough Creek for a Pennsylvanian deposit in central Texas [Rough Creek Bed of Drake, 1893], the USGS has discarded this name and calls the bed lower shale member of Tesnus formation.]
Source: US geologic names lexicon (USGS Bull. 896, p. 1848).
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 ([ ]).