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National Geologic Map Database
Geologic Unit: Denley
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Map showing publication footprint
  • Usage in publication:
    • Denley Limestone
  • Modifications:
    • Named
  • Dominant lithology:
    • Limestone
  • AAPG geologic province:
    • Appalachian basin
Publication:

Kay, Marshall, 1968, Ordovician formations in northwestern New York: Le Naturaliste Canadien, v. 95, no. 6, p. 1373-1378.


Summary:

Denley Limestone of Trenton Group here named in Lewis Co., north-central NY. Consists predominantly of shaly calcarenite and marl. Greater than 60 m thick at type section on Sugar River. Subdivided into (ascending) Camp, Glendale, Poland, Russia, and Rust Members. (Camp and Glendale are only members present at type.) Overlies Sugar River Limestone (new) and underlies Steuben Limestone.

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


Map showing publication footprint
  • Usage in publication:
    • Denley Limestone
  • Modifications:
    • Overview
    • Revised
  • AAPG geologic province:
    • Appalachian basin
Publication:

Baird, G.C., Brett, C.E., and Lehmann, David, 1992, The Trenton-Utica problem revisited; new observations and ideas regarding Middle-Late Ordovician stratigraphy and depositional environments in central New York, IN April, R.H., ed., Field trip guidebook: New York State Geological Association Guidebook, 64th annual meeting, Hamilton, NY, September 18-20, 1992, no. 64, p. 1-40.


Summary:

Authors feel a refined, unified Trenton stratigraphy is essential. Applied here is a modified version of Kay's (1968) stratigraphic nomenclature. Poland Member at the base of Denley Limestone includes the informally named City Brook bed. Russia Member is divided into Wolf Hollow division (with North Gage Road bed at its base), Brayton Corners division, and High Falls Tongue. Rust Member remains the uppermost unit of the Denley and underlies the Steuben Limestone.

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


Map showing publication footprint
  • Usage in publication:
    • Denley Limestone
  • Modifications:
    • Age modified
    • Overview
  • AAPG geologic province:
    • Appalachian basin
Publication:

Goldman, Daniel, Mitchell, C.E., Bergstrom, S.M., Delano, J.W., and Tice, Steven, 1994, K-bentonites and graptolite biostratigraphy in the Middle Ordovician of New York State and Quebec; a new chronostratigraphic model: Palaios, v. 9, no. 2, p. 124-143.


Summary:

Revised stratigraphic correlations based on reinterpretation of graptolites and K-bentonites in the area suggest that the lower part of the Utica Shale is the lateral equivalent of a large part of the lower Trenton Group and is older than the Denley Limestone, with which it has been previously equated. The lower part of the Utica lies below the Dolgeville Formation in the central Mohawk Valley. The top of the Dolgeville is probably equivalent to the top of the Russia Member of the Denley, as suggested by Kay (1953) and Fisher (1979). The age of the Denley is shown as Middle and Late Ordovician (Shermanian and Edenian).

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


Map showing publication footprint
  • Usage in publication:
    • Denley Limestone*
  • Modifications:
    • Overview
    • Age modified
  • AAPG geologic province:
    • Appalachian basin

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For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.

Asterisk (*) indicates usage by the U.S. Geological Survey. Other usages by state geological surveys.

"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 does not conform with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005). This may be explained within brackets ([ ]).