|Name||Minisink Limestone and New Scotland Formation, undivided|
|Geologic age||Lower Devonian|
Sedimentary > Carbonate > Limestone (Bed)Minisink Limestone - Light-medium-gray-weathering, medium-gray, fine-grained, medium-bedded, partly massive, argillaceous fossiliferous limestone. Some nodules and lenses of purer limestone occur locally. New Scotland Formation - Upper part pods of medium-dark-gray, very fine grained limestone; scattered thin beds and lenses of medium-gray, fine-grained argillaceous fossiliferous limestone; lower part contains thin beds and lenses of medium-gray, fine-grained, highly fossiliferous, argillaceous limestone.
Sedimentary > Clastic > Mudstone > Shale (Bed, Calcareous)New Scotland Formation - Upper part is dark-gray, very fine grained, laminated to thin-bedded siliceous shale. Lower part is medium-dark-gray, thin-bedded, siliceous, fossiliferous calcareous shale.
Sedimentary > Chemical > Chert (Bed)New Scotland Formation - Upper part, small dark-gray chert nodules. Lower part, nodules, lenses and, locally, irregular beds of dark-gray chert.
|Comments||Helderberg Group (Lower Devonian and Upper Silurian)|
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Drake, Avery A. Jr.,Volkert, Richard, A., Monteverde, Donald H., Herman, Gregory C., Houghton,Hugh F., Parker, Ronald A., and Dalton, Richard F., 1996, Bedrock Geologic Map of Northern New Jersey: U.S. Geological Survey Miscellanenous Investigations Map I-2540-A, 4 cross sections, 2 sheets, size 56x40; 58x41, scale 1:100.000.
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