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Geologic Unit: Mendon

Mendon Formation (VT*).

Cambrian, Early(?)*
Geologic Province:
New England province*
Areal Extent:

Type Locality:
Exposures in town of Mendon, 1 mi south of Mendon Village, Rutland Co., southwest VT (Whittle, 1894).

Moosalamoo Member (VT). Forestdale Member (VT). Nickwacket Member (VT).

Unit Name History:
Named Mendon series (Whittle, 1894).
Revised to Mendon Schist (Prindle and Knopf, 1932).
Redescribed as Mendon Formation; Age modified (Osberg, 1952).
Revised (Brace, 1953).
Age modified (Zen, 1967; Ayuso and Robinson, 1984).
Not used (Burton, 1993).
[When referring to the Mendon series of Whittle (1894), please use informally. The practice of employing "series" for lithostratigraphic or lithodemic nomenclature is now regarded as improper (see ACSN, 1961, 1970; NACSN, 1983). The term "Series" is applied formally only to chronostratigraphic units.]

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