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National Geologic Map Database

Geologic Unit: Normanskill

Usage:

Normanskill Shale (NY*)
Normanskill Formation (NY*)
Normanskill Group (NY)


Subunits:

GROUP STATUS (alphabetical) --all in NY: Austin Glen Formation, Indian River Formation, Mount Merino Formation, Pawlet Formation.
FORMATION STATUS (alphabetical) --all in NY: Austin Glen Member, Indian River Member, Mount Merino Member.


Geologic age:

Late Ordovician*


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

Normans Kill, a creek tributary to Hudson River south of Albany, Albany Co., eastern NY (Ruedemann, 1901).


AAPG geologic province:

New England province*


For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.

Asterisk (*) indicates published by U.S. Geological Survey authors.

"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 ([ ]).