Name Port Ewen limestone introduced in this report for unit near Port Ewen, NY. [Replaces use of Kingston beds, preoccupied.] Described as somewhat shaly limestone, typically exposed, attaining thickness of 100 to 200 ft in vicinity of Port Ewen. Included in Helderbergian group. In Orange Co. sections, the fauna seems to graduate into that of the overlying Oriskany. Underlies Oriskany beds and overlies Becraft limestone. Age is Early Devonian.
Source: GNU records (USGS DDS-6; Reston GNULEX).
Port Ewen Shale of Helderberg Group used in area of report (northeastern Pennsylvania, New Jersey, and southeasternmost New York). Age is Early Devonian.
Source: Changes in stratigraphic nomenclature, 1967 (USGS Bull. 1274-A, p. A15).
Port Ewen Shale of Helderberg Group mapped in northwestern NJ. Upper section is dark- to medium-dark-gray; calcareous siltstone and shale, fossiliferous. Lower section is medium-dark-gray, calcareous silty shale, irregularly bedded, nonfossiliferous. Thickness is approximately 150 ft. Lower contact with Minisink Limestone is abrupt and marked by the first occurrence of limestone. Underlies Glenerie Formation of Oriskany Group. Age is Early Devonian.
Source: GNU records (USGS DDS-6; Reston GNULEX).
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