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

Richardson, C.H., 1898, The Washington limestone in Vermont: American Association for the Advancement of Science Proceedings, v. 47, p. 295-296.


Summary:

Pg. 295-296. Bradford schist. The noncalcareous member of Calciferous mica schist. Named from Bradford, [Mount Cube quadrangle], Orange Co., northeastern VT, where it predominates. The calcareous member is here named Washington limestone.

Source: US geologic names lexicon (USGS Bull. 896, p. 246-247).


Map showing publication footprint
  • Usage in publication:
    • Bradford schist
  • Modifications:
    • Overview
  • AAPG geologic province:
    • New England province
Publication:

Richardson, C.H., 1902, The terranes of Orange County, Vermont, IN Perkins, G.H., Report of the State Geologist on the mineral industries and geology of certain areas of Vermont, 1901-1902: Vermont Geological Survey [Report of the State Geologist], 3rd, p. 61-101.


Summary:

Pg. 81. Bradford schist. Contains lower Trenton fossils. Was originally a sandstone, which is now represented by terranes of granular and micaceous quartzite and a foliated mica schist. Overlies black slate of Ordovician age. The Washington limestone is intimately interstratified with Bradford schist.

Source: US geologic names lexicon (USGS Bull. 896, p. 246-247).


Map showing publication footprint
  • Usage in publication:
    • Bradford schist
  • Modifications:
    • Revised
  • AAPG geologic province:
    • New England province
Publication:

Richardson, C.H., 1906, The areal and economic geology of northeastern Vermont, IN Perkins, G.H., Report of the State Geologist on the mineral industries and geology of certain areas of Vermont, 1905-1906: Vermont Geological Survey [Report of the State Geologist], 5th, p. 63-115.


Summary:

Pg. 90, 115, footnote. Bradford schist. Includes all of the non-calcareous members of old "Calciferous Mica Schist." It therefore embraces the quartzite, staurolitic, actinolitic, amphibolitic, ottrelitic, graphitic, and garnetiferous phases lying between 2 large narrow belts of slate and shale, one on east near Connecticut River, the other on west passing through Newport and Montpelier to Barnard.
[USGS has adopted Vershire schist as substitute for Bradford schist (preoccupied). Washington limestone (preoccupied) is replaced with Waits River limestone.]

Source: US geologic names lexicon (USGS Bull. 896, p. 246-247).


Map showing publication footprint
  • Usage in publication:
    • Bradford schists
  • Modifications:
    • Revised
  • AAPG geologic province:
    • New England province
Publication:

Richardson, C.H., 1924, The terranes of Bethel, Vermont, IN Perkins, G.H., Report of the State Geologist on the mineral industries and geology of Vermont, 1923-1924: Vermont Geological Survey [Report of the State Geologist], 14th, p. 77-103.


Summary:

Bradford schists, in Bradford Township, overlie Waits River limestone and are therefore younger than the phyllites here named Randolph phyllite.

Source: US geologic names lexicon (USGS Bull. 896, p. 246-247).


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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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