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  • Usage in publication:
    • Billerica Schist Member*
  • Modifications:
    • Named
  • Dominant lithology:
    • Schist
  • 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:

Rusty weathering sillimanite-muscovite-biotite schist in Billerica, northeastern MA, here named Billerica Schist Member of Nashoba Formation. Schist is stratified with relict sedimentary structures. 270 m thick at type. Overlies Bellows Hill Member; underlies Spencer Brook Member. Age is pre-Silurian.

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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