Usage:
Garceno Sandstone Member of Cook Mountain Formation of Claiborne Group (TX)
Geologic age:
early Tertiary (middle Eocene)
Type section, locality, area and/or origin of name:
Named from Garceno ranch house, located on outcrop of the sandstone, 9 mi northwest of Zapata, Mexico. Ranch house is on American side of Rio Grande, western TX (Patterson, 1942).
AAPG geologic province:
Gulf Coast basin
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 ([ ]).