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National Geologic Map Database

Geologic Unit: Segovia

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 ([ ]).