Usage:
James Limestone of Trinity Group (subsurface of AR*,LA*,MS*,TX*)
James Limestone Bed of Pine Island Member of Glen Rose Formation of Atascosa Group (TX-subsurface)
James Limestone Member of Pearsall Formation of Trinity Group (TX-subsurface)
Geologic age:
Early Cretaceous*
Type section, locality, area and/or origin of name:
["Type section"] (subsurface): depth-interval 3,827 to 3,917 ft, Arkansas Fuel Oil Company James No. 1 well, in sec. 14, T. 20 N., R. 1 E., Union Parish, LA. Named from well (Weeks, 1938).
AAPG geologic province:
Arkla 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 ([ ]).