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National Geologic Map Database

NGMDB

Geologic Unit: Allentown

Usage:

Allentown Member of Kittatinny Limestone (NJ)
Allentown Limestone (PA)
Allentown Formation (NJ,PA)
Allentown Dolomite (NJ*,PA*)
Allentown Dolomite of Kittatinny Supergroup (NJ*,PA*)


Subunits:

FORMATION STATUS (alphabetical): Limeport Member (NJ), Maiden Creek Member (PA*), Muhlenberg Member (PA*), Tuckerton Member (PA*).


Geologic age:

Late Cambrian and Early Ordovician(?)*


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

Named from exposures along Lehigh and Jordan Creeks in vicinity of Allentown, Lehigh Valley district, eastern PA (US geologic names lexicons, USGS Bull. 896, 1200).


AAPG geologic province:

Appalachian basin*


NGMDB

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 ([ ]).

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Page Last Modified: Tue Jun 3 15:55:36 2014