USGS Visual Identifier
National Geologic Map Database logo GEOLEX database

Geologic Unit: Canaan Mountain

Canaan Mountain Formation (CT*,MA*)
Canaan Mountain Schist (CT*,MA*)

Proterozoic, Late*
Ordovician, Early
Geologic Province:
New England province*

Areal Extent:

Type Locality:
Not designated. Named from Canaan Mountain in town of Canaan, Litchfield Co., northwestern CT (Rodgers and others, 1956).

Unit Name History:
Named (Rodgers and others, 1956).
Age modified; Extended into MA (Ratcliffe, 1974).
Age modified (Gates, 1975).
Overview; Age modified (Harwood, 1979)
MA State Geol. Map usage (Zen and others, 1983)
CT State Geol. Map usage (Rodgers, 1985).

Note: If you need more information, please contact Nancy Stamm (
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
Database project personnel
Last modified: 15-Jan-2013