USGS Visual Identifier
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Geologic Unit: Fearn Springs

Fearn Springs Formation of Wilcox Group (MS)
Fearn Springs Member of Nanafalia Formation (MS*)
Fearn Springs Member of Naheola Formation (MS)

Geologic Province:
Black Warrior basin*

Areal Extent:

Type Locality:
In SE/4 NE/4 sec. 3, T. 13 N., R. 14 E., 0.25 mi west of Fearn Springs, Winston Co., MS (Mellen, 1939).
Alternate locality [Reference section]: at Flat Rock Church (old Hurley School) near center sec. 9, T. 5 S., R. 2 E., Benton Co., about 0.5 mi west of Tippah Co. line, MS (Mellen, 1950).

Unit Name History:
Named Fearn Springs Formation (Mellen, 1939).
Revised to member (Belt and others, 1945).
Revised (MacNeil, 1946).
Overview; Alternate type locality designated (Mellen, 1950).
Overview (MacNeil, 1951).
Restricted from AL (LaMoreaux and Toulmin, 1958).
Age modified (Boswell, 1975).
Assigned to Naheola Formation (Dockery, 1990).

Note: If you need more information, please contact Nancy Stamm (
Asterisks (*) indicate usage by the U.S. Geological Survey. Other usages by state geological surveys.

"No current usage" implies that a name has been abandoned or that it has fallen into disuse. Former usage and, if known, replacement name given in parentheses ().

Slashes (/) indicate unit name usage violates the 1983 North American Stratigraphic Code. This violation may be explained within brackets ([ ]).

U.S. Department of the Interior, U.S. Geological Survey, Reston, VA, USA
Database project personnel
Last modified: 15-Jan-2013