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National Geologic Map Database
Geologic Unit: Ossipee Mountain
Map showing publication footprint
  • Usage in publication:
    • Ossipee Mountain Complex*
  • Modifications:
    • Revised
    • Geochronologic dating
  • AAPG geologic province:
    • New England province
Publication:

Lyons, J.B., Bothner, W.A., Moench, R.H., and Thompson, J.B., Jr., 1997, Bedrock geologic map of New Hampshire: U.S. Geological Survey [State Geologic Map], 2 sheets, scale 1:250,000 and 1:500,000, Prepared in cooperation with DOE and State of New Hampshire


Summary:

Used informally as Ossipee Mountain Complex of Kingsley (1931). Now mapped as unnamed rocks (rhyolite, fine-grained granite, quartz syenite porphyry, and massive to porphyritic basalt) within White Mountain Plutonic-Volcanic Suite. Isotope age of 122 +/-2 Ma [Early Cretaceous per time scale of Palmer, 1983] by K-Ar methods was reported by Foland and Faul (1977).

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 ([ ]).

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