Bedrock Geologic Map of Vermont, 2011

Reference: Ratcliffe, NM, Stanley, RS, Gale, MH, Thompson, PJ, and Walsh, GJ, 2011, Bedrock Geologic Map of Vermont: USGS Scientific Investigations Series Map 3184, 3 sheets, scale 1:100,000.  
To order a paper copy of the map (3 52"x72" sheets), send a check for $46.00 and your address to the Vermont Geological Survey,1 National Life Dr., Main 2, Montpelier, VT 05620-3902

History of the Vermont Geological Survey & the State Geologist Gallery

The mission of producing a geological and mineralogical survey of the state guided the establishment of the Vermont Geological Survey. This Survey would provide a full scientific examination and description of the state's rocks, soils, metals and minerals. Charles B. Adams (1814-1853) was appointed the first Vermont State Geologist by Governor William Slade in March of 1845. The survey progressed slowly over the years due to little funding. Several annual reports were published, but the first geologic map of Vermont was not completed until 1861.


Asbestos minerals are found in the serpentinized ultramafic bodies. The larger bodies are composed of central cores of massive dunite and peridotite which grade outward to massive or sheared serpentinite. Chrysotile asbestos occurs as cross-fiber veins in the more massive portions of the ultramafic bodies and as slip-fibers in the highly sheared serpentinites (Ratte, 1982).


Radioactivity - Naturally Occuring in Rock, Soil and Water

Drought and other hazards

What is drought? A period of unusually dry weather that persists long enough to cause problems such as crop damages or water shortages. There is meteorological, agricultural and hydrologic drought. Impacts of drought on groundwater may lag behind the decrease in precipitation and agricultural drought. For tips on what to do during drought, has information about all hazards.

Links to drought information:


Earthquake FAQS

What is an earthquake? It is sudden shaking of the earth caused by shifting of rock beneath the surface. Earthquakes occur due to slip along faults, volcanic activity or other changes in stress in the earth's crust.


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