USGS Visual Identifier
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Geologic Unit: Stamford

Stamford Granite of Cardinal Brook Intrusive Suite (VT*,MA*)

Proterozoic, Middle*
Geologic Province:
New England province*

Areal Extent:

Type Locality:
Hills immediately west of Stamford, southwestern VT (Hitchcock and others, 1861).

Unit Name History:
Named Stamford Gneiss (Hitchcock and others, 1861).
Revised to Stamford Granite Gneiss (Emerson, 1917).
MA State Geol. Map usage (Zen and others, 1983).
Revised to Stamford Granite (Ratcliffe, 1991).
Revised; Isotopic dating (Ratcliffe and others, 1993).

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