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National Geologic Map Database

Geologic Unit: Rondout

Usage:

Rondout Formation (NJ*,NY*,PA*)
Rondout Limestone (NJ*,NY*,PA)
Rondout Dolomite (NY)
Rondout Group (NY)


Subunits:

GROUP STATUS (alphabetical) --all in NY: Glasco Limestone, Rosendale Dolomite, Whiteport Dolomite.
FORMATION STATUS (alphabetical): Glasco Member (NY*), Mashipacong Member (NJ*,NY*,PA*), Orrs Mills Member (NY), Rosendale Dolomite Member (NY) or Rosendale Member (NY*), Whiteport Dolomite Member (NY*,NJ*,PA*) or Whiteport Member (NY*,NJ*,PA*).


Geologic age:

Late Silurian to Early Devonian*


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

Type area: cement quarries at and near Rondout Co. [line?], southeastern NY (Clarke and Schuchert, 1899).


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 ([ ]).