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National Geologic Map Database

Geologic Unit: Dowelltown

Usage:

Dowelltown Formation (TN)
Dowelltown Member of Chattanooga Shale (TN*)


Subunits:

Center Hill Ash Bed (TN*), Rhinestreet Shale Bed (TN*)


Geologic age:

Late Devonian*


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

Type section: outcrop 1.5 mi east of Dowelltown, DeKalb Co., TN (Campbell, 1946). [Hass (1956) did not find Campbell's type section at designated distance, but he considered an exposure 3.1 mi east of Dowelltown on an abandoned part of TN Highway 26 as Campbell's type locality.]


AAPG geologic province:

Appalachian basin*


For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.

Asterisk (*) indicates usage by the U.S. Geological Survey. Other usages by state geological surveys.

"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 does not conform with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005). This may be explained within brackets ([ ]).