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National Geologic Map Database
Geologic Unit: West Branch
Map showing publication footprint
  • Usage in publication:
    • West Branch Volcanics
  • Modifications:
    • Overview
  • AAPG geologic province:
    • New England province
Publication:

Hanson, L.S., Bradley, D.C., and Caldwell, D.W., 1993, Geology and geomorphology of the Acadian Orogen, central Maine, IN Cheney, J.T., and Hepburn, J.C., eds., Field trip guidebook for the northeastern United States; 1993 Boston GSA; Volume 2: University of Massachusetts, Department of Geosciences Contribution, Joint annual meeting of Geological Society of America, and New England Intercollegiate Geological Conference, 85th, Boston, MA, October 25-28, 1993, no. 67, p. CC1-CC27.


Summary:

Because a formal naming paper has not been published [and Bradley is a USGS co-author], used as West Branch Volcanics of Griscom (1976) in this report. Exposed on north bank of West Branch Penobscot River. Consists of prominent, cliff-forming outcrops of intermediate volcanic flows and sills, plus less resistant, slope-forming tuff and siltstone. Age is Silurian (Pridolian).

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


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

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