Usage:
Pine Island Formation (AL,FL,MS)
Pine Island Formation of Trinity Group (LA,TX)
Pine Island Shale of Trinity Group (AR*,LA*,TX*)
Pine Island Member of Glen Rose Formation of Atascosa Group (TX)
Pine Island Shale Member of Pearsall Formation of Trinity Group (TX*)
Geologic age:
Early Cretaceous*
Type section, locality, area and/or origin of name:
Pine Island field, northwestern LA (Imlay, 1940).
[?Type section] (subsurface): depth-interval 3,897 to 5,919 ft, Dixie Oil Company Dillon No. 92 [well], in sec. 13, T. 21 N., R. 15 W., Pine Island field, Caddo Parish, LA (Imlay, 1940).
AAPG geologic province:
Arkla basin*
Gulf Coast basin*
Mid-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 ([ ]).