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  • Usage in publication:
    • Hutchinson River Group*
  • Modifications:
    • Named
  • Dominant lithology:
    • Gneiss
    • Amphibolite
    • Schist
  • AAPG geologic province:
    • New England province
Publication:

Baskerville, C.A., 1982, Adoption of the name Hutchinson River Group and its subdivisions in Bronx and Westchester Counties, southeastern New York, IN Stratigraphic notes, 1980-1982: U.S. Geological Survey Bulletin, 1529-H, p. H1-H10.


Summary:

The Hutchinson River Group is here named in the Manhattan Prong in Westchester and Bronx Counties, NY, and Fairfield County, CT. It contains the Hartland Formation and its Pelham Bay Member and four informal amphibolite, schist, and gneiss members, and the overlying Harrison Gneiss. Age is Cambrian to Middle Ordovician.

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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