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National Geologic Map Database

Geologic Unit: Ravena

Usage:

Ravena Member of Coeymans Limestone of Helderberg Group (NY*)
Ravena Limestone Member of Coeymans Formation of Helderberg Group (NY)


Geologic age:

Early Devonian*


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

Type section: abandoned limestone quarry just south of hairpin turn in road ascending escarpment 0.5 mi northeast of village of Ravena, just west of Coeymans in Coxsackie quadrangle, east-central NY (Rickard, 1962).
Reference section: in southeastern most New York in three abandoned quarries on northwest side of Lime Kiln Road, on southeast slope of Trilobite Mountain, Port Jervis, NY (Epstein and others, 1967).


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 ([ ]).