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National Geologic Map Database

Geologic Unit: Dot

Usage:

Dot Formation (TN*,VA*)
Dot Limestone (TN*,VA*)
Dot Dolomite (VA*)
Dot Formation of Chickamauga Group (TN)


Geologic age:

Middle to Late Ordovician (Whiterockian; Chazyan)*


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

Type section: in cut of Louisville and Nashville RR spur at Hagan, Lee Co., VA. Named from settlement of Dot, at junction of U.S. 58 and State Route 66 in eastern part of Jonesville district (Miller and Brosge, 1950).


AAPG geologic province:

Appalachian basin*


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

Asterisk (*) indicates published by U.S. Geological Survey authors.

"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 ([ ]).