Mineral Resources On-Line Spatial Data
|Name||Copake and Rochdale Formations|
|Geologic age||Lower Ordovician|
|Original map label||Ow|
|Comments||part of Wappinger and Stockbridge Groups, Poughquag Quartzite, and Metamorphic Equivalents up to 4000 ft. (1200 m).|
|Primary rock type||limestone|
|Secondary rock type||dolostone (dolomite)|
|Other rock types||siltstone; chert|
Sedimentary > Carbonate > Limestone
Sedimentary > Carbonate > Dolostone
Sedimentary > Clastic > SiltstoneCopake Formation
Sedimentary > Chemical > ChertHalcyon Lake Dolostone-locally cherty.
NYS Museum, NYS Geological Survey, NYS Museum Technology Center, 1999, 1:250,000 Bedrock geology of NYS, data is distributed in ARC/INFOr EXPORT format (with ".e00" extension) in 5 seperate files based on printed map sheets, http://www.nysm.nysed.gov/gis.html.
D. W. Fisher; Y. W. Isachsen, L. V. Rickard, 1970, Geologic Map of New York State, consisting of 5 sheets: Niagara, Finger Lakes, Hudson-Mohawk, Adirondack, and Lower Hudson, New York State Museum and Science Service, Map and Chart Series No. 15, scale 1:250000.
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