U.S. Geological Survey Home AASG Logo USGS HOME CONTACT USGS SEARCH USGS
National Geologic Map Database

Geologic Unit: Longview

Usage:

Longview Dolomite of Knox Group (KY,TN,VA)
Longview Formation of Knox Group (VA)
Longview Limestone (AL)
Longview Limestone of Knox Group (AL,GA)
Longview Dolomite Member of Beekmantown Formation of Knox Group (VA)


Geologic age:

Early Ordovician


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

Named for fact that town of Longview [in T. 21 S., R. 2 W., Montevallo 15-min quadrangle], Shelby Co., northern AL, is located on a rather wide area of the formation (Butts, 1926).
Best exposures: (1) on Little Cahaba River, in sec. 17, T. 24 N., R. 11 E., [Montevallo 15-min quadrangle, Bibb Co.]; (2) on Buck Creek btw. Helena and Pelham [Helena 7.5-min quadrangle, Shelby Co.]; and (3) in Cahaba Valley just north of reservoir of Birmingham waterworks in NE/4 sec. 16, T. 18 S., R. 1 W. [probably now beneath Lake Purdy, Cahaba Heights 7.5-min quadrangle, Jefferson Co.] (Butts, 1926).


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 ([ ]).