Chipman Formation - Bridport Member

Thickly bedded, “beeswax-scored,” orangey-beige-weathering, yellowish-gray to light-bluish-gray dolostone, dark-gray fine-grained to aphanitic dolostone, and minor beds of bluish-gray limestone. Transitions eastward into the Beldens Member with addition of limestone beds. Equivalent to Providence Island Dolostone (Ofcpi). Chipman Formation (mapped south of Wings Point). Vermont Valley sequence and Middlebury synclinorium (above the Orwell and Champlain thrusts).
State Vermont
Name Chipman Formation - Bridport Member
Geologic age Middle Ordovician
Lithologic constituents
Major
Sedimentary > Carbonate > Dolostone (Bed)Thickly bedded, “beeswax-scored,” orangey-beige-weathering, yellowish-gray to light-bluish-gray dolostone, dark-gray fine-grained to aphanitic dolostone.
Minor
Sedimentary > Carbonate > Limestone (Bed)Minor beds of bluish-gray limestone.
References
NGMDB product
Counties Addison - Bennington - Chittenden - Rutland