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National Geologic Map Database

Geologic Unit: Elbow Ridge

Usage:

Elbow Ridge Sandstone (MD,PA)
Elbow Ridge Sandstone of Helderberg Group (WV)
Elbow Ridge Sandstone Member of Helderberg Formation (MD)
Elbow Ridge Sandstone Member of Coeymans Limestone of Helderberg Group (PA)


Geologic age:

Early Devonian


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

Section is on south side of Licking Creek where it bends southward across MD line, and across northeastern end of Elbow Ridge. It is several hundred feet west of bridge crossing creek about 1 mi east of Warren Point and 1.5 mi southwest of Yeakle Mill, Franklin Co., southern PA (Swartz, 1939).


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 ([ ]).