GEOLEX database Geologic Unit: Underhill Usage: Underhill Formation (VT) Underhill Formation of Camels Hump Group (VT*) Age: Precambrian* Proterozoic, Late* Cambrian, Early* Geologic Province: New England province* Areal Extent: VT* Type Locality: Underhill Twp. in northern part of Camels Hump quadrangle and in southern part of Mount Mansfield quadrangle, northwestern VT (Christman and Secor, 1961). Subunits: Bakersfield Greenstone Member, Battell Member, Fairfield Pond Phyllite Member, Forestdale Member, Jay Peak Member, Mount Abraham Schist Member, Peaked Mountain Greenstone Member, and White Brook Dolomite Member (all VT) Unit Name History: Named (Christman and Secor, 1961). VT State Geol. Map usage (Doll and others, 1961). Overview (Cady and others, 1962; Dennis, 1964). Age modified (Tauvers, 1982; O'Loughlin and Stanley, 1986; Slack and others, 1988). Overview (Walsh, 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