Usage:
San Angelo Sandstone of Pease River Group (TX*)
San Angelo Formation of Pease River Group (TX*)
San Angelo Sandstone of El Reno Group (OK*)
Subunits:
Duncan Member (TX*).
Geologic age:
Middle Permian (Guadalupian)*
Type section, locality, area and/or origin of name:
[Type locality]: a few mi west of San Angelo, Tom Green Co., northern TX (Lerch, 1891; see Henderson, 1928).
AAPG geologic province:
Bend arch*
Palo Duro 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 ([ ]).