The National Geologic Map Database is migrating to a new infrastructure. We apologize for any service disruptions during this process.

U.S. Geological Survey Home AASG Logo USGS HOME CONTACT USGS SEARCH USGS
National Geologic Map Database
Map showing publication footprint
  • Usage in publication:
    • Thorp Point Member
  • Modifications:
    • Not used
  • AAPG geologic province:
    • New England province
Publication:

Washington, P.A., and Chisick, S.A., 1988, The Beekmantown Group in the central Champlain Valley, IN Detenbeck, J.C., ed., Guidebook 2: Vermont Geology, v. 5, p. F1-F17.


Summary:

Welby's (1961) Thorp Point is here lumped together with Emerson Schoolhouse [School] Member of Fort Cassin Formation. Authors feel that Welby's differentiation of this member, based on varying proportions of constituent lithologies, is artificial.

Source: GNU records (USGS DDS-6; Reston GNULEX).


For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.

Asterisk (*) indicates published by U.S. Geological Survey authors.

"No current usage" (†) implies that a name has been abandoned or has fallen into disuse. Former usage and, if known, replacement name given in parentheses ( ).

Slash (/) indicates name conflicts with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005, 2021). May be explained within brackets ([ ]).

Accessibility FOIA Privacy Policies and Notices

USA Gov U.S. Department of the Interior | U.S. Geological Survey
Supported by the National Cooperative Geologic Mapping Program
Page Contact Information: Personnel
Page Last Modified: Thu 21 May 2026 05:18:53 PM MDT