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National Geologic Map Database

Geologic Unit: Conococheague

Usage:

Conococheague Limestone (MD*,PA*,VA*,WV*)
Conococheague Limestone of Knox Group (TN*)
Conococheague Formation (PA*,VA)
Conococheague Formation of Knox Group (VA*)
Conococheague Group (PA*)


Subunits:

GROUP STATUS: Buffalo Springs Formation (PA*), Millbach Formation (PA*), Richland Formation (PA*), Schaefferstown Formation (PA*), Shady Grove Formation (PA*), Snitz Creek Formation (PA*), Zullinger Formation (PA*).
FORMATION STATUS: Big Spring Station Member (MD,PA,WV,VA), Millbach Member (PA), Richland Member (PA), Snitz Creek Member (PA).


Geologic age:

Cambrian, Late*
Ordovician, Early*


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

[Type section]: along banks of Conococheague Creek in town of Scotland, [Scotland 7.5-min quadrangle], Franklin Co., central southern PA (Stose, 1908, 1909).


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 ([ ]).