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National Geologic Map Database

Geologic Unit: Artpark

Usage:

Artpark Phosphate Bed of Grimsby Formation of Medina Group (NY*)


Geologic age:

early Early Silurian (Llandovery)*


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

Type section: small bluff at north end of Niagara River Gorge, 0.25 mi south of Artpark State Park, Lewiston, Niagara Co., NY (Brett and others, 1995).


AAPG geologic province:

Appalachian basin*


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 ([ ]).