DGS Geologic Map Series
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Browsing DGS Geologic Map Series by Subject "Atlantic Coastal Plain"
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Item Geologic Map of Kent County, Delaware(Newark, DE: Delaware Geological Survey, University of Delaware, 2007) Ramsey, K.W.Item Geologic Map of the Bethany Beach and Assawoman Bay Quadrangles, Delaware(Newark, DE: Delaware Geological Survey, University of Delaware, 2012-12) Ramsey, K.W.; Tomlinson, J.L.The geologic history of the surficial units of the Bethany Beach and Assawoman Bay Quadrangles is that of deposition of the Beaverdam Formation and its subsequent modification by erosion and deposition related to sea-level fluctuations during the Pleistocene. The geology reflects this complex history onshore, in Indian River Bay and Assawoman Bay, and offshore in the Atlantic Ocean. Erosion during the late Pleistocene sea-level lowstand and ongoing deposition offshore and in Indian River Bay during the Holocene rise in sea level represents the latest of several cycles of erosion and deposition.Item Geologic Map of the Trap Pond and Pittsville Quadrangles, Delaware(Newark, DE: Delaware Geological Survey, University of Delaware, 2014-06) Tomlinson, J.L.; Ramsey, K.W.The geological history of the surficial units of the Trap Pond and the Delaware portion of the Pittsville Quadrangle was the result of deposition of the Beaverdam Formation and its subsequent modification by erosion and deposition related to the sea-level fluctuations during the Pleistocene. The geology reflects this complex history by the cut and fill geometry of the Middle and late Pleistocene deposits into the Beaverdam Formation. The geology is further complicated by periglacial activity that produced dune deposits and Carolina Bays in the map area, which modified the land surface. Surficial geologic mapping was conducted using field maps at a scale of 1:12,000 with 2-foot contours. Stratigraphic boundaries drawn at topographic breaks reflect detailed mapping using contours not shown on this map.