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Map showing publication footprint
  • Usage in publication:
    • Indian River slate*
  • Modifications:
    • Named
  • Dominant lithology:
    • Slate
    • Quartzite
  • AAPG geologic province:
    • New England province
Publication:

Keith, Arthur, 1932, Stratigraphy and structure of northwestern Vermont: Washington Academy of Sciences Journal, v. 22, no. 13, p. 357-379.


Summary:

Named the Indian River slate in eastern NY and southwestern VT for Indian River, Washington Co., NY. Consists of bright red slate with, locally, a few thin seams or layers of fine green quartzite. Red color due to iron oxide. Formation furnishes the well-known red slate of NY slate industry. Conformably overlies the Poultney slate and conformably underlies an unnamed black slate. The Indian River is of Middle Ordovician (Chazyan) age.

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


Map showing publication footprint
  • Usage in publication:
    • Indian River member
  • Modifications:
    • Revised
  • AAPG geologic province:
    • New England province
Publication:

Fisher, D.W. (editor), 1961, Geologic map of New York: New York State Museum and Science Service Map and Chart Series, no. 5, scale 1:250,000, (1962)


Summary:

Revised the Indian River to the Indian River member of the Normanskill formation in NY.

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


Map showing publication footprint
  • Usage in publication:
    • Indian River Slate*
  • Modifications:
    • Revised
  • AAPG geologic province:
    • New England province
Publication:

Zen, E-an, 1963, Age and classification of some Taconic stratigraphic units on the Centennial geologic map of Vermont; a discussion: American Journal of Science, v. 261, no. 1, p. 92-93.


Summary:

Included the Indian River Slate in the Mount Hamilton Group in VT.

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


Map showing publication footprint
  • Usage in publication:
    • Indian River Formation
  • Modifications:
    • Revised
  • AAPG geologic province:
    • New England province
Publication:

Fisher, D.W., Isachsen, Y.W., and Rickard, L.V., 1970, Geologic map of New York State; Lower Hudson sheet: New York State Museum and Science Service Map and Chart Series, no. 15, 1 sheet, scale 1:250,000


Summary:

Revised the Indian River to the Indian River Formation in southeastern NY.

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


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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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