Poultney Formation (""A"" Member)

North of Troy: shale, limestone; Hatch Hill Formation-shale, dolostone; West Castleton Formation-shale, limestone, conglomerate.
State New York
Name Poultney Formation (""A"" Member)
Geologic age Cambrian
Lithologic constituents
Major
Sedimentary > Clastic > Mudstone > Shale
Minor
Sedimentary > Carbonate > Limestone
Sedimentary > Carbonate > DolostoneHatch Hill Formation
Incidental
Sedimentary > Clastic > ConglomerateWest Castleton Formation
Comments part of Eugeosynclinal (Allochthonous) Sequence up to 6000 ft.? (2000 m).
References

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.

NGMDB product
Counties Washington