Usage:
Glenmark Formation of Clinton Group (NY)
Glenmark Shale of Clinton Group (NY)
Glenmark Bed of Decew Formation (NY)
Geologic age:
early Silurian (Wenlock)
Type section, locality, area and/or origin of name:
Type locality: exposures at Glenmark Falls on Sodus Creek near Sodus, Sodus Bay 7.5-min quadrangle, Wayne Co., NY (Brett, 1983).
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 ([ ]).