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National Geologic Map Database
Geologic Unit: Peterborough
Map showing publication footprint
  • Usage in publication:
    • Peterborough Member
  • Modifications:
    • Not used
  • AAPG geologic province:
    • New England province
Publication:

Greene, R.C., 1995, Talc resources of the conterminous United States: U.S. Geological Survey Open-File Report, OF-95-586, 178 p., (incl. geologic map, scale 1:5,000,000)


Summary:

Mica schist and biotite granulite country rocks that host talc deposits were previously mapped as Peterborough Member of Early Devonian Littleton Formation by Greene (1970). More recent work to the north by Nielson (1981) and in Massachusetts (Zen and others, 1983) has cast doubt on age and correlation of these rocks, which may be Silurian or Ordovician.

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


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

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