Usage:
Artpark Phosphate Bed of Grimsby Formation of Medina Group (NY*)
Geologic age:
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 conflicts with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005, 2021). May be explained within brackets ([ ]).