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National Geologic Map Database

Geologic Unit: Ludlowville

Usage:

Ludlowville Shale of Hamilton Group (NY*,PA*,OH*,WV*,MD*)
Ludlowville Formation of Hamilton Group (NY*,PA*)


Subunits:

Centerfield (NY*,PA*,MD*,OH*,WV*), Ivy Point (NY*), Jaycox (NY*), King Ferry (NY), Ledyard (NY), Otisco (NY*), Owasco (NY), Spafford (NY), Spring Brook (NY), Stone Mill (NY), and Wanakah (NY*) Members


Geologic age:

Middle Devonian*


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

Named from exposures at Ludlowville, Tompkins Co., west-central NY (Hall, 1839).
Reference section: sequence on Paines Creek at Aurora beginning with Centerfield at Moonshine Falls and terminating with Portland Point beds at Black Rock, Erie Co., NY (Cooper, 1930).


AAPG geologic province:

Appalachian basin*


For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.

Asterisk (*) indicates usage by the U.S. Geological Survey. Other usages by state geological surveys.

"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 ([ ]).