Usage:
Garren Group (TX)
Subunits:
(alphabetical) --all in TX: Bell Valley Andesite, Buckshot Ignimbrite, Colmena Formation, Fairbury Trachyte, High Lonesome Tuff, Hogeye Tuff, Means Trachyte, Moon Trachyte, Pantera Trachyte, Petan Basalt, Zopilote Breccia.
Geologic age:
Tertiary, early
Oligocene to Eocene
Type section, locality, area and/or origin of name:
Constitutes eroded northwest portion of Davis Mountains volcanic field in Wylie Mountains, Culberson and Jeff Davis Cos., TX. Named from Guy Garren Ranch, on which all but the youngest formation are exposed (Hay-Roe, Hugh, 1957).
AAPG geologic province:
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 ([ ]).