Tomlinson, J.L.Ramsey, K.W.Andres, A.S.2014-01-102014-01-102013-12http://udspace.udel.edu/handle/19716/12846The 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.en-USBeaverdam FormationCarolina Bay depositscoastal geologyCypress Swamp FormationDagsborodune depositsfillFrankfordHoloceneIronshire Formationlagoon depositsLynch Heights Formationmarsh depositsmodified landOmar FormationQuaternary PeriodScotts Corners FormationSelbyvilleshoreline depositsSinepuxent FormationSTATEMAPsurficial geologyswamp depositsPleistoceneTertiary PeriodMap