- Usage in publication:
-
- McFearin Tongue
- Modifications:
-
- Named
- Dominant lithology:
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- Sandstone
- AAPG geologic province:
-
- Arkla basin
Summary:
Named as one of five newly named sandstone tongues of the Terryville Sandstone (new) of the Cotton Valley Group. Type section designated as between 9,440 and 9,590 ft in the Arkansas-Louisiana Gas Co. Lewis No. 1, NW NW sec 27, T19N, R4W, Lincoln Parish, LA in Arkla basin. Consists of white quartzose sandstone about 50 ft thick. Considered to be a blanket sandstone that overlies and underlies gray shale of the Hico Shale (new) of Cotton Valley Group. Pinches out into Hico in northern LA. Cross sections. Late Jurassic age.
Source: GNU records (USGS DDS-6; Denver 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 ([ ]).