USGS Visual Identifier
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Geologic Unit: Johns Valley

Johns Valley Shale (AR*,OK*)

Pennsylvanian, Early*
Geologic Province:
Ouachita folded belt*
Arkoma basin*
Areal Extent:

Type Locality:
Typically exposed in center of Tuskahoma syncline, particularly in N/2 T. 1 S., R. 16 E. Named from settlement (on Cane Creek, in northwest part of Pushmataha Co., about 6 mi north of Eubanks) which is now called Johns Valley, but which, at time Taff named Caney shale, was locally known as Caney and which Taff in 1925 stated was type locality of Caney shale (Ulrich, 1927). [From US geologic names lexicons, USGS Bull. 896, 1200]

Unit Name History:
Named (Ulrich, 1927).
GNC remarks (Wilmarth, 1938).
Abandoned (Harlton, 1938).
Overview (Rea, 1947).
OK State Geol. Map usage (Miser and others, 1954).
Overview (Cline, 1956; Cline and Shelburne, 1959; Miser and Hendricks, 1960).
Revised (Morris, 1971).

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