|Name||Austin Glen Formation|
|Geologic age||Middle Ordovician|
Sedimentary > Clastic > Mudstone > Shale
Sedimentary > Clastic > Sandstone > Graywacke
|Comments||part of Trenton Group and Metamorphic Equivalents up to 8000 ft. (2400 m). Unit is also listed as part of part of Eugeosynclinal (Allochthonous) Sequence on printed map and uses a different color to map; however, on the digital map both units of Oag are mapped together. I followed the digital map and did not separate the unit into 2 provinces (the unit descriptions are identical).|
Fisher, D.W., Isachsen, Y.W., and Rickard, L.V., 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 1:250,000.
|Counties||Dutchess - Orange - Sullivan - Ulster|