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National Geologic Map Database

NGMDB

Geologic Unit: Amsterdam

Usage:

Amsterdam Limestone of Black River Group (NY*,VT*)
Amsterdam Limestone of Trenton Group (NY,VT)
Amsterdam Limestone (VT)
Amsterdam Member of Isle la Motte Formation (VT)


Geologic age:

Middle Ordovician*


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

Type section: in quarry 0.5 mi east of Manny Corners, 3 mi east-northeast of Amsterdam, Montgomery Co., east-central NY (Kay, 1937).
Named from exposures along the Mohawk in vicinity of Amsterdam (Ruedemann, 1910).


AAPG geologic province:

Appalachian basin*
New England province*


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 15:55:58 2014