|Name||Cambrian thru Middle Ordovician carbonate rock|
|Geologic age||Cambrian - Middle Ordovician|
|Comments||part of Trenton Group and Metamorphic Equivalents up to 8000 ft. (2400 m). Note that this unit is also in the Wappinger and Stockbridge Groups, Poughquag Quartzite, and Metamorphic Equivalents. It has no name mentioned on the printed map, only refers to "slivers, as OCAls above". The same color and symbol are used so I have combined both units into this one (didn't make sense to create a new province for just this one unit; especially since the same color and symbol are used). Also note that on printed map there is a unit OCAh which refers to "Horses along normal faults". It is the same color as this unit (OCAs) and is not used in the digital map, so I have included it within this description.|
|Primary rock type||carbonate|
|Secondary rock type||melange|
|Other rock types|
Sedimentary > Carbonate (Melange)carbonate rock - occuring as slivers caught along thrusts of later allochthones, or carbonate blocks in Taconic Melange. Also mapped as horses along normal faults.
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.