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National Geologic Map Database

Geologic Unit: Coleman Junction

Usage:

Coleman Junction Limestone Member of Putnam Formation of Wichita Group (TX*)
Coleman Junction Formation of Albany Group (TX-notably south of Wichita River)


Geologic age:

Early Permian (Asselian and Sakmarian; Wolfcampian)*


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

Named from Coleman Junction, Coleman Co., Colorado River region, central TX (Drake, 1893; Plummer and Moore, 1922).


AAPG geologic province:

Bend arch*


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 ([ ]).