Usage:
No current usage.
(†Frio Stage or †Frio Formation (LA-subsurface) not adopted by the LA Geol. Survey or USGS. Considered abandoned.)
Geologic age:
Oligocene
Type section, locality, area and/or origin of name:
Type locality (subsurface): China gas-distillate field in northeast Jefferson Davis Parish, LA; field is 6 mi southwest of Elton, LA (Warren, 1957).
Type section (subsurface): depth-interval 7,663 to 9,725 ft (formation), 7,663 to 9,961 ft (stage), Continental Oil-Union Sulphur, H.J. Shoesmith No. 1 well located 330 ft south and 330 ft east of northwest corner sec. 1, T. 8 S., R. 4 W. (Warren, 1957).
AAPG geologic province:
Gulf Coast 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 ([ ]).