USGS Visual Identifier
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Geologic Unit: West Castleton

West Castleton Formation (VT*,NY*)
West Castleton Formation of Mount Hamilton Group (VT)

Proterozoic, Late*
Cambrian, Early*
Cambrian, Middle
Geologic Province:
New England province*

Areal Extent:

Type Locality:
Roadcut along Scotch Hill Road, south of village of West Castleton, western Rutland Co., west-central VT (Zen, 1961).

Unit Name History:
[Please note: only the Zen and others (1983) and Thompson (1990) references include synopses here. The remaining references have yet to be added from the GNC index card files. Until then, feel free to contact us if you would like complete bibliographic citations.]
First used (Zen, 1959).
Named (Zen, 1961).
VT State Geol. Map usage (Doll, 1961).
Extended into NY (Theokritoff, 1963).
Revised; Age discussed (Zen, 1963).
Age discussed (Doll and others, 1963).
Age modified (Zen, 1967).
Overview (Bird and Rasetti, 1968).
NY State Geol. Map usage (Isachsen and Fisher, 1970).
Overview (Zen and others, 1983).
Age modified (Rankin and others, 1983).
Areally restricted (Fisher, 1984).
Areal limits (Thompson, 1990).

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