Dunham Dolostone

Buff- and pink-mottled and massive, or light-gray, pinkish-gray-weathering, and massive to poorly bedded dolostone. Contains distinctive small pebbles and grains of well-rounded quartz; minor beds of dolostone-breccia and conglomerate occur near Rutland. Vermont Valley sequence and Middlebury synclinorium (above the Orwell and Champlain thrusts).
State Vermont
Name Dunham Dolostone
Geologic age Lower Cambrian
Lithologic constituents
Major
Sedimentary > Carbonate > DolostoneBuff- and pink-mottled and massive, or light-gray, pinkish-gray-weathering, and massive to poorly bedded dolostone; minor beds of dolostone-breccia and conglomerate.
Minor
Sedimentary > Clastic > Sedimentary-breccia (Bed)Dolostone-breccia.
Sedimentary > Clastic > Conglomerate (Bed)Dolostone conglomerate.
References
NGMDB product
Counties Addison - Bennington - Chittenden - Franklin - Rutland