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National Geologic Map Database

Geologic Unit: Mad Indian

Usage:

Mad Indian Group (AL)
Mad Indian Group of Asland Supergroup (AL)


Subunits:

informal graphitic and non-graphitic units


Geologic age:

Paleozoic, middle
Paleozoic, late


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

Exposures along Mad Indian Creek, North Lineville East quadrangle, Clay Co., AL (Neathery and Reynolds, 1975).


AAPG geologic province:

Piedmont-Blue Ridge province


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 ([ ]).