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National Geologic Map Database

Geologic Unit: Caddo Pool

Usage:

Caddo Pool Formation of Kickapoo Creek Group (TX-subsurface)
Caddo Pool Formation of Smithwick Group (TX-subsurface)


Geologic age:

Middle Pennsylvanian


Type section, locality, area and/or origin of name:

Type section (subsurface): depth-interval 3,820 to 3,960 ft, Anzac Oil Corp. et al E.S. Graham No. 1 well, in Allen Hines Survey, Abstract 135, central Young Co., north-central TX. Discovery well of Caddo Pool of eastern Stephens Co. was completed in this black limestone which is colloquially known as the "Caddo lime"; hence the name (Cheney, 1940).


AAPG geologic province:

Bend arch
Permian basin


For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.

Asterisk (*) indicates usage by the U.S. Geological Survey. Other usages by state geological surveys.

"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 does not conform with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005). This may be explained within brackets ([ ]).