Abstract |
Detailed study of the distribution of surficial materials in the Champlain Valley, Vermont, established a framework for the glacial history and provided basic information relevant to water supply, waste disposal, and sand and gravel resources. Postglacial modifications of the glaciated landscape include stream incision of up to several hundred feet, deposition of stream alluvium, and progressive submergence of southern portions of the Lake Champlain basin due to isostatic uplift of the spillway to the St. Lawrence River. High yield water supplied from surficial materials is limited to alluvium but quantities sufficient for domestic supplies are available in most places. Septic systems and sanitary landfills are probably most favorably accommodated by delta sands and gravels. Sand and gravel supplies are provided by ice marginal deposits and upland deltas. (USGS abstract) |