DGS Geologic Map Series
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Item Geology of the Chesapeake and Delaware Canal Area(Newark, DE : Delaware Geological Survey, University of Delaware, 1970) Pickett, T.E.Item Geology of the Middletown-Odessa Area, Delaware(Newark, DE: Delaware Geological Survey, University of Delaware, 1971) Pickett, T.E.; Spoljaric, N.Item Geology of the Newark Area, Delaware(Newark, DE: Delaware Geological Survey, University of Delaware, 1972) Woodruff, K.D.; Thompson, A.M.Item Geology of the Wilmington Area, Delaware(Newark, DE: Delaware Geological Survey, University of Delaware, 1975) Woodruff, K.D.; Thompson, A.M.Item Geology of the Smyrna-Clayton Area, Delaware(Newark, DE: Delaware Geological Survey, University of Delaware, 1977) Pickett, T.E.; Benson, R.N.Item Geology of the Dover Area, Delaware(Newark, DE: Delaware Geological Survey, University of Delaware, 1983) Pickett, T.E.; Benson, R.N.Item Geology of South Central Kent County, Delaware(Newark, DE: Delaware Geological Survey, University of Delaware, 1986) Benson, R.N.; Pickett, T.E.Item Geologic Map Of The Milford And Mispillion River Quadrangles(Newark, DE: Delaware Geological Survey, University of Delaware, 1993-06) Ramsey, K.W.Item Geology Of The Seaford Area, Delaware(Newark, DE: Delaware Geological Survey, University of Delaware, 1995) Andres, A.S.; Ramsey, K.W.Item Bedrock Geologic Map Of The Piedmont OF Delaware And The Adjacent Pennsylvania(Newark, DE: Delaware Geological Survey, University of Delaware, 2000) Schenck, W.S.; Plank, M.O.; Srogi, L.A.Item Geologic Map Of The Ellendale And Milton Quadrangles, Delaware(Newark, DE: Delaware Geological Survey, University of Delaware, 2001) Ramsey, K.W.Item Geologic map of the Lewes and Cape Henlopen quadrangles, Delaware(Newark, DE : Delaware Geological Survey, University of Delaware, 2003) Ramsey, K.W.Item Geologic Map Of New Castle County, Delaware(Newark, DE: Delaware Geological Survey, University of Delaware, 2005) Ramsey, K.W.Item Geologic Map of Kent County, Delaware(Newark, DE: Delaware Geological Survey, University of Delaware, 2007) Ramsey, K.W.Item Geologic Map Of The Georgetown Quadrangle, Delaware(Newark, DE: Delaware Geological Survey, University of Delaware, 2010) Ramsey, K.W.The geologic history of the surficial geologic units of the Georgetown Quadrangle is primarily that of deposition of the Beaverdam Formation and its subsequent modification by erosion and deposition of younger stratigraphic units. The age of the Beaverdam Formation is uncertain due to the lack of age-definitive fossils within the unit. Stratigraphic relationships in Delaware indicate that it is no older than late Miocene and no younger than early Pleistocene. Regional correlations based on similarities of depositional style, stratigraphic position, and sediment textures suggest that it is likely late Pliocene in age; correlative with the Bacons Castle Formation of Virginia (Ramsey, 1992, 2010).Item Geologic Map of the Harbeson Quadrangle, Delaware(Newark, DE: Delaware Geological Survey, University of Delaware, 2011) Ramsey, K.W.; Tomlinson, J.L.The complex geologic history of the surficial units of the Harbeson Quadrangle is one of deposition of the Beaverdam Formation and its subsequent modification by erosion and deposition related to sea-level fluctuations during the Pleistocene. The geology is further complicated by periglacial activity that produced dune deposits and Carolina Bays scattered throughout the map area.Item Geologic Map of the Fairmount and Rehoboth Beach Quadrangles, Delaware(Newark, DE: Delaware Geological Survey, University of Delaware, 2011) Ramsey, K.W.The map shows and describes the geologic units found at the land surface and in the shallow subsurface in the map area. The purpose of the map is to provide geologic information that can be used for determining such things as the geology of watersheds, recognition of the relationship between geology and regional environmental or land-use issues to support land-use and regulatory decision making, and identification of potential locations of sand and gravel resources.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 Frankford and Selbyville Quadrangles, Delaware(Newark, DE: Delaware Geological Survey, University of Delaware, 2013-12) Tomlinson, J.L.; Ramsey, K.W.; Andres, A.S.The geological history of the surficial units of the Frankford and Delaware portion of the Selbyville Quadrangles was the result of deposition of the Beaverdam Formation during the late Pliocene and its subsequent modification by erosion and deposition related to sea-level fluctuations during the Pleistocene. The geology at the land surface was then further modified by periglacial activity that produced dune deposits in the map area. 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.Item Geologic Map of the Millsboro and Whaleysville Quadrangles, Delaware(Newark, DE: Delaware Geological Survey, University of Delaware, 2014-04) Ramsey, K.W.; Tomlinson, J.L.The geological history of the surficial units of the Millsboro Quadrangle and Delaware portion of the Whaleysville Quadrangle was the result of deposition of the Beaverdam Formation during the late Pliocene and its subsequent modification by erosion and deposition related to sea-level fluctuations during the Pleistocene and late Pleistocene upland swamp and bog deposition. The geology at the land surface was then further modified by periglacial activity that produced dune deposits and Carolina Bays in the map area. 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.