Providence Island Dolostone

Light-buff-tan- weathering, massive to thick-bedded, fine-grained dark-gray dolostone; has “beeswax-scored” surfaces; contains thin layers of fossiliferous bluish-gray limestone (largely equivalent to the Bridport Member of the Chipman Formation, north of Orwell). Part of the Beekmantown Group. Rocks of the Laurentian Margin. Part of the Adirondack lowlands and Lake Champlain lowlands (west of the Orwell and Champlain thrusts).
State Vermont
Name Providence Island Dolostone
Geologic age Middle and Lower Ordovician
Lithologic constituents
Major
Sedimentary > Carbonate > Dolostone (Bed)Light-buff-tan- weathering, massive to thick-bedded, fine-grained dark-gray dolostone; has “beeswax-scored” surfaces.
Minor
Sedimentary > Carbonate > Limestone (Bed)Contains thin layers of fossiliferous bluish-gray limestone.
References
NGMDB product
Counties Addison - Grand Isle