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Map showing publication footprint
  • Usage in publication:
    • Piermont member
  • Modifications:
    • Original reference
  • Dominant lithology:
    • Schist
  • AAPG geologic province:
    • New England province
Publication:

Hadley, J.B., and Chapman, C.A., 1939, The geology of the Mount Cube and Mascoma quadrangles, New Hampshire: New Hampshire State Planning and Development Commission, 27 p., (incl. geologic maps, scale 1:62,500)


Summary:

(J.B. Hadley, 1938, Geologic map and structure sections of the New Hampshire portion of the Mt. Cube quadrangle).
Piermont member of Albee formation. Consists of dark-gray quartz-mica schist, mica schist, staurolite schist and local beds of fine conglomerate, of volcanic origin in part, interbedded with the schists and quartzites of the Albee formation. Age is Late Ordovician(?).

Source: US geologic names lexicon (USGS Bull. 1200, p. 3012-3013).


Map showing publication footprint
  • Usage in publication:
    • Piermont member
  • Modifications:
    • Principal reference
  • Dominant lithology:
    • Schist
  • AAPG geologic province:
    • New England province
Publication:

Hadley, J.B., 1942, Stratigraphy, structure, and petrology of the Mt. Cube area, New Hampshire: Geological Society of America Bulletin, v. 53, no. 1, p. 113-176, (incl. geologic map, scale 1:62,500)


Summary:

Pg. 117, 119 (fig. 2), 126-127. Piermont member of Albee formation. Maximum thickness estimated 1,000 feet. Occurs about 1,000 feet above base of Albee formation. Type locality cited.
Type locality: Mt. Cube area, in and near village of Piermont, [Mt. Cube 15-min quadrangle], Grafton Co., western NH.

Source: US geologic names lexicon (USGS Bull. 1200, p. 3012-3013).


Map showing publication footprint
  • Usage in publication:
    • Piermont member*
  • Modifications:
    • Areal extent
  • AAPG geologic province:
    • New England province
Publication:

Billings, M.P., 1955, Geologic map of New Hampshire: U.S. Geological Survey [State Geologic Map], scale 1:250,000


Summary:

Map; M.P. Billings, 1956, Geol. New Hampshire, Pt. 2 Bedrock geol., p. 16. Piermont member of Albee formation. Gray to dark-gray mica schists with porphyoblasts of biotite, garnet, and/or staurolite. Confined to area around Piermont, [Grafton County, New Hampshire]. Lies in staurolite metamorphic zone. Age is Ordovician(?).

Source: Publication; US geologic names lexicon (USGS Bull. 1200, p. 3012-3013).


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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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