THE SURFICIAL GEOLOGY OF THE CANTON AND EAST LIVERPOOL 1:100,000-SCALE QUADRANGLES SHOWN IN THREE DIMENSIONS

Two maps depicting the surficial geology of the Canton and the Ohio portion of the East Liverpool 1:100,000-scale quadrangles have been produced by the Ohio Department of Natural Resources, Division of Geological Survey. Surficial deposits were mapped at 1:24,000 scale for 48 quadrangles, compiled digitally, and converted into full-color, print-on-demand, 1:100,000-scale, three-dimensional surficial-geology maps. Stack-unit designations for each map-unit area depict the thickness and stratigraphic sequence of lithologic units such as till, gravel, sand, silt, and clay from the surface down to and including the uppermost buried bedrock unit. Data sources include county soil surveys, Ohio Department of Transportation and Ohio EPA boring logs, engineering logs, water-well logs, theses, and published and unpublished reports. The maps required changes to the previous interpretation of the area’s geology. Buried valleys south of the glacial margin contain thick deposits of lacustrine silt intermixed with debris flows and fans. Numerous buried valleys formerly thought to be filled completely with sand and gravel actually contain relatively thin deposits of sand and gravel underlain by thick lacustrine silt and debris-flow deposits. The Wisconsinan-Illinoian boundary was mapped in detail on the basis of soils maps. Revised bedrock-topography maps of Wayne County depict bedrock much closer to the surface than previously mapped. This project was partially funded by the U.S. Geological Survey, National Cooperative Geologic Mapping Program, STATEMAP component.