- Usage in publication:
-
- Stone City Formation
- Modifications:
-
- Mapped 1:250k
- Dominant lithology:
-
- Clay
- Silt
- Sand
- AAPG geologic province:
-
- East Texas basin
Summary:
Stone City Formation. Clay, silt, and sand; clay, silty, sandy, fissile, brownish gray, interbedded with sand, argillaceous, glauconite; weathers yellowish brown and orange red. Thickness up to 80 feet. Lies above Sparta Sand and below Cook Mountain Formation. Age is Eocene.
Mapped in southeastern part of map sheet in Leon Co., eastern TX.
Source: Publication.
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 ([ ]).