USGS Visual Identifier
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Geologic Unit: Shady

Usage:
Shady Dolomite (TN*,AL*,GA*,NC*,VA*,WV*)
Shady Formation (AL,GA*)
Shady Dolostone (MS)

Age:
Cambrian, Early*
Cambrian, Middle*





Geologic Province:
Appalachian basin*
Black Warrior basin





Areal Extent:
AL*
GA*
MS
NC*
TN*
VA*
WV*

Type Locality:
Shady, Johnson Co., TN (Keith, 1903).

Unit Name History:
Named (Keith, 1903).
Extended into NC (Keith, 1905a).
Revised (Keith, 1905b).
Extended into VA (Hewett, 1916).
Extended into GA (LaForge, 1919).
Revised (Stose, 1923).
Revised (Stose and Jonas, 1939).
Extended into AL (Butts, 1940).
Revised (Kesler, 1950).
Age modified (Harris and Milici, 1977).
Revised (Reinhardt, 1977).
Correlation (Tull and others, 1988).
Extended into subsurface of MS (Henderson, 1991).
Revised; Extended into WV (Ryder, 1992).
Overview (Guthrie, 1994).

Note: If you need more information, please contact Nancy Stamm (nstamm@usgs.gov).
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
URL http://ngmdb.usgs.gov/ngmdb/ngm_catalog.ora.html
Database project personnel
Last modified: 15-Jan-2013