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  • Usage in publication:
    • Bellows Hill Member*
  • Modifications:
    • Named
  • Dominant lithology:
    • Gneiss
  • AAPG geologic province:
    • New England province
Publication:

Bell, K.G., and Alvord, D.C., 1976, Pre-Silurian stratigraphy of northeastern Massachusetts, IN Page, L.R., ed., Contributions to the stratigraphy of New England: Geological Society of America Memoir, 148, p. 179-216.


Summary:

Medium-gray sillimanitic biotite gneiss with amphibolite here named Bellows Hill Member and assigned to Nashoba Formation as one of 10 members. Medium-grained, stratified; relict sedimentary structures. Overlies Boxford Member (reduced in rank); underlies Billerica Schist Member (named) 1,100 m thick. Age is pre-Silurian.

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


Map showing publication footprint
  • Usage in publication:
    • Bellows Hill Member*
  • Modifications:
    • Age modified
  • AAPG geologic province:
    • New England province
Publication:

Goldsmith, Richard, 1980, Stratigraphic names in the New London area, southeastern Connecticut; a revision, IN Sohl, N.F., and Wright, W.B., Changes in stratigraphic nomenclature by the U.S. Geological Survey, 1979: U.S. Geological Survey Bulletin, 1502-A, p. A91-A103.


Summary:

Age of Nashoba and its Boxford Member (and by inference its other nine members) changed from pre-Silurian to Proterozoic Z or 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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