GEOLEX database Geologic Unit: Hawley Usage: Hawley Formation (MA*,VT*,CT*) Age: Ordovician, Middle* Ordovician, Late Silurian Geologic Province: New England province* Areal Extent: CT* MA* VT* Type Locality: Type section: Clark Hill, 1500 ft north of MA-VT State line, Heath quadrangle, VT. Named from exposures in Hawley Twp., Franklin Co., northwestern MA (Emerson, 1898). Unit Name History: Named Hawley Schist (Emerson, 1898). Age modified (Chidester and others, 1967). Redescribed as Hawley Formation; Areal limits; Type and reference sections (Hatch, 1967). Correlation discussed; Extended into CT? (Schnabel, 1974). MA State Geol. Map usage (Zen and others, 1983). CT State Geol. Map usage (Rodgers, 1985). Overview (Stanley and Hatch, 1988). Overview; Age modified (Tzrciensky and others, 1992). 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