GEOLEX database Geologic Unit: Roxbury Usage: Roxbury Conglomerate of Boston Bay Group (MA*) Age: Precambrian* Proterozoic, Late* Cambrian, Early(?)* Geologic Province: New England province* Areal Extent: MA* Type Locality: Named from exposures in Roxbury, Boston area, eastern MA (Hitchcock, 1861). Subunits: (ascending) Brookline, Dorchester, and Squantum Members (MA*) Unit Name History: Named (Hitchcock, 1861). Overview (Shaler, 1871). Assigned to Boston Bay group (LaForge, 1932). Age modified (Bailey and Newman, 1978; Goldsmith and others, 1982). MA State Geol. Map usage (Zen and others, 1983). Not used (Socci and Smith, 1990). Overview (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