Vermont Public Radio offers a podcast report on release of the new Bedrock Geologic Map of Vermont by the Vermont Geological Survey and the USGS:
Since Vermont's last Bedrock Geologic Map was completed over 50 years ago, there have been new interpretations of geologic history, like plate tectonics theory. That theory was accepted in the mid-1960s. There have also been advancements in the science of geologic mapping and technology. A new map will be released this week by the Vermont Geological Survey. It will incorporate these new elements and will help address some of Vermont's environmental issues and the protection of our natural resources.
Reference: Ratcliffe, N.M., Stanley, R.S, Gale, M.H., Thompson, P.J., and Walsh, G.J., 2011, Bedrock Geologic Map of Vermont: U.S. Geological Survey Scientific Investigations Map 3184, 3 sheets, scale 1:100,000.
Geologists Marjie Gale and Nick Ratcliffe discuss how the map was created over a span of three decades, what it tells us about the state's bedrock geology and how the map can be utilized.