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National Geologic Map Database

NGMDB

Geologic Unit: Hornerstown

Usage:

Hornerstown Sand of Rancocas Group (NJ*,DE*,MD*)
Hornerstown Sand (NJ*)
Hornerstown Formation (NJ*,DE,MD)
Hornerstown Formation of Rancocas Group (NJ)


Geologic age:

early Tertiary (early Paleocene; Danian); locally Late Cretaceous (Maastrichtian)*


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

Named from occurrence at Hornerstown, Monmouth Co., east-central NJ (Clark, 1907).


AAPG geologic province:

Atlantic Coast 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 16:13:38 2014