USGS Visual Identifier
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Geologic Unit: Cram Hill

Cram Hill Formation (VT*)
Cram Hill Member of Missisquoi Formation (VT)

Ordovician, Middle*
Geologic Province:
New England province*
Areal Extent:

Type Locality:
Exposures on east side of Cram Hill, 3.5 miles south-southeast of Roxbury, Barre quadrangle, Washington Co., VT (Currier and Jahns, 1941).

Unit Name History:
Named (Currier and Jahns, 1941).
Revised to member of Missisquoi Formation (Doll and others, 1961) [From GNU records (USGS DDS-6; Reston GNULEX); complete bibliographic citation and synopsis not given].
Overview (Ratcliffe and Armstrong, in press).

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