USGS Visual Identifier
National Geologic Map Database logo GEOLEX database


Geologic Unit: Claypit Hill

Usage:
Claypit Hill Formation (MA*)

Age:
Precambrian*
Proterozoic, Late*
Geologic Province:
New England province*

Areal Extent:
MA*


Type Locality:
Along railroad between 0.1 and 0.4 mi (0.16 and 0.64 km) east of Claypit Hill Road, Middlesex Co., eastern MA (Nelson, 1974).

Unit Name History:
Named (Nelson, 1974).
Age modified (Goldsmith, 1980).
Not used on MA State Geol. Map (Zen and others, 1983).
Not used (Goldsmith, 1991).

Note: If you need more information, please contact Nancy Stamm (nstamm@usgs.gov).
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
URL http://ngmdb.usgs.gov/ngmdb/ngm_catalog.ora.html
Database project personnel
Last modified: 15-Jan-2013