Usage:
Segovia Formation of Edwards Group (TX-recognized on eastern Edwards Plateau)
Subunits:
(alphabetical) --all in TX: Allen Ranch Breccia Member, Burt Ranch Member, Orr Ranch Bed.
Geologic age:
late Early Cretaceous (Albian; Comanchean Provincial Epoch)
Type section, locality, area and/or origin of name:
Type section: Joy Creek composite section in roadcuts of U.S. Highway 1-10 from 8 to 16 km southeast of Segovia, Kimble Co., TX (Rose, 1972).
AAPG geologic province:
Kerr basin
Permian 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 ([ ]).