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  • Usage in publication:
    • Harmonyvale Member
  • Modifications:
    • Named
  • Dominant lithology:
    • Dolomite
    • Chert
    • Limestone
  • AAPG geologic province:
    • Appalachian basin
Publication:

Markewicz, F.J., and Dalton, Richard, 1977, Stratigraphy and applied geology of the lower Paleozoic carbonates in northwestern New Jersey, IN Guidebook for the 42nd annual field conference of Pennsylvania geologists: Field Conference of Pennsylvania Geologists, no. 42, p. 10-12.


Summary:

Harmonyvale Member of Ontelaunee Formation named in Sussex Co., northwestern NJ. Consists of light-gray dolomite, chert, and limestone. Unit is fine-grained to cryptocrystalline, stylolitic, and fossiliferous. Greater than 67 m thick. Overlies Beaver Run Member of Ontelaunee Formation and unconformably underlies Jacksonburg Formation. Age is Early Ordovician.

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


Map showing publication footprint
  • Usage in publication:
    • Harmonyvale Member
  • Modifications:
    • Overview
  • AAPG geologic province:
    • Appalachian basin
Publication:

Dalton, Richard, 1989, Stratigraphy of the "Kittatinny Limestone", IN Grossman, I.G., ed., Paleozoic geology of the Kittatinny Valley and southwest Highlands area, New Jersey; field guide and proceedings: Geological Association of New Jersey Annual Field Conference, 6th annual meeting, October 20-21, 1989, v. 6, p. 59-94.


Summary:

Nomenclature in this report follows Markewicz and Dalton (1977) who divided the Ontelaunee Formation in NJ into the Beaver Run Member and the overlying Harmonyvale Member. The Harmonyvale is the youngest of the Early Ordovician rocks in NJ. Thickness exceeds 220 ft although in many places unit has been completely eroded away and the Jacksonburg rest directly on the Beaver Run. The Harmonyvale consists of a dense, fine-grained to cryptocrystalline, conchoidal fracturing, stylolitic dolomite. Some beds weather to a strongly dissected crosshatch surface referred to as "elephant-hide rock" by Hobson (1963). Age of the Ontelaunee shown as entirely within the Early Ordovician. [This disagrees with Drake and Lyttle (1980) who extended the age of the Ontelaunee into the Middle Ordovician.]

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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