USGS Visual Identifier
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Geologic Unit: Maryville

Usage:
Maryville Limestone of Conasauga Group (TN*,VA*,GA*,AL*,WV*,KY*)

Age:
Cambrian, Middle*
Cambrian, Late*




Geologic Province:
Appalachian basin*





Areal Extent:
TN*
WV*
VA*
GA*
AL*
KY*

Type Locality:
Maryville, Blount Co., TN (Keith, 1895).

Unit Name History:
Named (Keith, 1895).
Revised, included in Conasauga Group (Rodgers, 1953).
Extended into GA, AL (Higgins and others, 1988).
Overview of depositional environment (Srinivasan and Walker, 1993).
Revised; Areal limits; Age modified (Ryder, 1992).
Extended into subsurface of KY (Ryder and others, 1997).

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