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  • Usage in publication:
    • Chaumont Limestone†
  • Modifications:
    • Abandoned
  • AAPG geologic province:
    • Appalachian basin
Publication:

Fisher, D.W., 1977, Correlation of the Hadrynian, Cambrian, and Ordovician rocks in New York State: New York State Museum Map and Chart Series, no. 25, 5 sheets, 75 p.


Summary:

Chaumont Limestone is abandoned in NY. Name originally applied to include Leray and Watertown Limestones of Black River Group. Kay (1960, 1969) used the name as a stage name (Chaumontian) of his Bolarian Series. Kay (1968) returned to using Watertown Limestone for dark-gray-black, cherty limestone above Lowville Limestone and beneath Rocklandian Selby and Napanee Limestones. Because Chaumont is a synonym of Watertown, it is here abandoned.

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


Map showing publication footprint
  • Usage in publication:
    • Chaumont†
  • Modifications:
    • Abandoned
  • AAPG geologic province:
    • Appalachian basin
Publication:

Conkin, J.E., 1991, Middle Ordovician (Mohawkian) paracontinuous stratigraphy and metabentonites of eastern North America: University of Louisville Studies in Paleontology and Stratigraphy, no. 18, 54 p.


Summary:

Chaumont Formation of Kay (1929) is "suppressed" for it is Trentonian rather than Blackriveran and is simply a "junior synonym" of the Watertown. The Glenburnie Member (of Kay, 1929) of the Chaumont is reduced in rank to Glenburnie Bed, as it occurs only locally (CAN) in the upper Lowville Formation, above the Pencil Cave Metabentonite.

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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