Usage:
Coeymans Formation of Helderberg Group (NJ*,NY*,PA*)
Coeymans Limestone of Helderberg Group (NJ*,NY*,PA*,VA*,WV*)
Coeymans Limestone Member of Helderberg Formation (MD,PA*)
Coeymans Member of Helderberg Limestone (PA*,VA)
Subunits:
(alphabetical): Dayville Member (NY)*, Deansboro Member (NY*), Depue Limestone Member (PA*,NJ*), Elbow Ridge Sandstone Member (PA), Kalkberg Member (NY), Peters Valley Member (PA*,NY*,NJ*), Ravena Member (NY), Shawnee Island Member (NJ*,PA*), Stormville Member (NJ*,PA*).
Geologic age:
early Early Devonian (Lochkovian)*
Type section, locality, area and/or origin of name:
Exposed at Coeymans, Albany Co., NY (Clarke and Schuchert, 1899).
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 ([ ]).