Usage:
Alden Pyrite Bed of Ledyard Shale Member of Ludlowville Formation (NY)
Alden pyrite interval (informal) of /Winspear submember [informal] of Ledyard Member of Ludlowville Formation (NY)
For informal usage, the rank or lithologic term should not be capitalized. [Winspear submember considered informal until formally published in accord with NACSN (2021). The rank or lithologic term should not be capitalized.]
Geologic age:
late Middle Devonian (Givetian)
Type section, locality, area and/or origin of name:
Type section: exposures along Spring Creek, between Crittenden Road and U.S. Route 20, Alden, Erie Co., NY (Babcock and Speyer, 1987).
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 ([ ]).