Usage:
Shongaloo Member of Schuler Formation of Cotton Valley Group (AR*,LA*,MS?,TX*)
[?] Shongaloo Formation of Cotton Valley Group (LA)
Geologic age:
Jurassic, Late*
Type section, locality, area and/or origin of name:
Type section (subsurface): depth-interval 8,400 to 9,450 ft, Magnolia Petroleum Company Sexton Unit 1 well, in SW/4 NW/4 SE/4 sec. 32, T. 23 N., R. 9 W., Webster Parish, LA. Named from the town and oil field of Shongaloo (Swain, 1944).
Type for Shongaloo (restricted): Lion Oil Refining Company and Phillips Petroleum Company, Edna Morgan No. 1 well (Mann and Thomas, 1964).
AAPG geologic province:
Arkla basin*
East Texas 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 ([ ]).