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National Geologic Map Database
Map showing publication footprint
  • Usage in publication:
    • Halcyon Lake Formation*
  • Modifications:
    • Revised
  • AAPG geologic province:
    • New England province
Publication:

Ratcliffe, N.M., and Burton, W.C., 1990, Bedrock geologic map of the Poughquag quadrangle, New York: U.S. Geological Survey Geologic Quadrangle Map, GQ-1662, 1 sheet, scale 1:24,000 [http://ngmdb.usgs.gov/Prodesc/proddesc_440.htm]


Summary:

Halcyon Lake Formation is here assigned to the Wappinger Group. Overlies the Briarcliff Dolomite and underlies the Rochdale Formation, both of the Wappinger.

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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