USGS Visual Identifier
National Geologic Map Database logo GEOLEX database


Geologic Unit: Prospect

Usage:
Prospect Gneiss (CT*)
Prospect Formation of Hartland Group (CT)

Age:
Ordovician, Middle(?)*
Geologic Province:
New England province*
Areal Extent:
CT*

Type Locality:
Eastern part of Prospect Twp., New Haven Co., southwestern CT (Gregory, 1906).

Subunits:
Beardsley Member (CT*) and Pumpkin Ground Member (CT*)

Unit Name History:
Named (Gregory, 1906).
Restricted (Carr, 1960).
Revised (Fritts, 1962).
Age modified (Fritts, 1964).
Subdivided (Crowley, 1968).
Age modified; Revised (Rodgers, 1985).
Revised (Panish, 1992).

Note: If you need more information, please contact Nancy Stamm (nstamm@usgs.gov).
Asterisks (*) indicate usage by the U.S. Geological Survey. Other usages by state geological surveys.

"No current usage" implies that a name has been abandoned or that it has fallen into disuse. Former usage and, if known, replacement name given in parentheses ().

Slashes (/) indicate unit name usage violates the 1983 North American Stratigraphic Code. This violation may be explained within brackets ([ ]).






U.S. Department of the Interior, U.S. Geological Survey, Reston, VA, USA
URL http://ngmdb.usgs.gov/ngmdb/ngm_catalog.ora.html
Database project personnel
Last modified: 15-Jan-2013