Usage:
Little Brazos Limestone Lentil of Cook Mountain Formation of Claiborne Group (TX)
Geologic age:
early Tertiary (middle Eocene)
Type section, locality, area and/or origin of name:
Best exposed along Little Brazos River in neighborhood of the old interurban crossing on W.T. James estate, 70 acres, W. Matthis survey, about 1.4 mi northeast of Bryan Junction [now Varisco], [approx. Lat. 30 deg. 39 min. 40 sec. N., Long. 96 deg. 30 min. 36 sec. W., Mumford 7.5-min quadrangle, Brazos Co.], eastern central TX (Renick and Stenzel, 1931).
AAPG geologic province:
East Texas basin
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 ([ ]).