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  • Usage in publication:
    • Nipsachuck Gneiss
  • Modifications:
    • Revised
    • Overview
  • Dominant lithology:
    • Gneiss
  • AAPG geologic province:
    • New England province
Publication:

Skehan, J.W., and Rast, Nicholas, 1990, Pre-Mesozoic evolution of Avalon terranes of southern New England, IN Socci, A.D., Skehan, J.W., and Smith, G.W., eds., Geology of the composite Avalon terrane of southern New England: Geological Society of America Special Paper, 245, p. 13-53.


Summary:

Nipsachuck Gneiss is here assigned to the Harmony Complex until its age and contact relations with adjacent units are clear. Authors tentatively interpret the Nipsachuck as a highly deformed granitic pluton that intrudes the overlying Absalona and Woonasquatucket Formations (also assigned to the Harmony). Described as gray to tan, pink- to red-weathering, foliated to mylonitized gneiss. Contains strongly lineated biotite.

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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