GEOLEX database Geologic Unit: Brimfield Usage: Brimfield Group (CT*,MA*) Brimfield Schist (CT*,MA*) Brimfield Schist of Putnam Group (CT*) Age: Cambrian(?)* Ordovician(?)* Geologic Province: New England province* Areal Extent: CT* MA* Type Locality: Named from occurrence at Brimfield, Hampden Co., south-central MA (Emerson, 1898). Subunits: Bigelow Brook (CT*), Hamilton Reservoir (CT*,MA*), and Mount Pisgah (CT*,MA*) Formations of Brimfield Group; Daly Swamp Member of Brimfield Schist (CT*). Unit Name History: Named (Emerson, 1898; 1917). Revised (Callaghan, 1931). Areal limits (Hansen, 1956). MA State Geol. Map usage (Zen and others, 1983). Age modified (Pease, 1989). 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: 7-Jan-2007