Usage:
Lost Mine Member of South Rim Formation (TX-local)
Recognized in southwestern TX, notably Trans-Pecos area, Big Bend National Park.
Geologic age:
Tertiary
Oligocene
Type section, locality, area and/or origin of name:
Named from Lost Mine Peak whose top is capped by the lava that also occurs on Crown Mountain, the high mesa between the South Rim and Emory Peak, and on an unnamed peak about 2 mi southwest of Emory Peak, Big Bend National Park, Brewster Co., southwestern TX (Maxwell and Hazzard, 1967).
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 ([ ]).