Usage:
Ernst Member of Boquillas Formation of Terlingua Group (TX)
Geologic age:
Late Cretaceous (Cenomanian to Turonian)
Type section, locality, area and/or origin of name:
Not designated. Three sections (measured by planetable) in San Vicente-Hot Springs area, Brewster Co., southwestern TX; complete section about 1.5 mi north of Rio Grande, TX. Named from Ernst Tinaja, about 2 mi east-northeast of old Boquillas Post Office, Brewster Co., 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 ([ ]).