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National Geologic Map Database

Geologic Unit: Big Spring Station

Usage:

Big Spring Station Member of Conococheague Formation (VA,WV)
Big Spring Station Member of Conococheague Formation of Knox Group (VA)
Big Spring Station Member of Conococheague Limestone (MD,PA,VA,WV)


Geologic age:

Late Cambrian


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

Type section: at RR cuts north of and in fields west of Big Spring Station on Western Maryland RR about 3 mi south of Clear Spring, Washington Co., northwestern MD (Cloos, 1951; Wilson, 1952).


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 ([ ]).