Tomlinson, J.L.Ramsey, K.W.2020-09-112020-09-112020-09https://udspace.udel.edu/handle/19716/27503Mapping was conducted using field maps at a scale of 1:12,000 with 2-ft contours. Stratigraphic boundaries drawn at topographic breaks reflect detailed mapping using contours not shown on this map. Most stratigraphic units mapped in stream valleys are projected from subsurface data. Except for a few erosional bluffs, these units are covered by colluvium. This map supersedes Geology of the Middletown-Odessa Area, Delaware: Delaware Geological Survey Geologic Map Series No. 2 (Pickett and Spoljaric, 1971). The geology of the map area reflects a complex history with a cut and fill geometry where the Pleistocene-aged deposits incised into older units. The Tertiary deposits were modified by erosion and deposition of the Columbia Formation during the early Pleistocene and again by the Lynch Heights and Scotts Corners Formations as a result of sea-level fluctuations during the middle to late Pleistocene. The geology is further complicated by periglacial activity that produced Carolina Bay deposits in the map area, which modified the land surface.en-USLower Cretaceousfillmodified landswamp depositsmarsh depositsCarolina Bay depositsScotts Corners FormationLynch Heights FormationColumbia FormationBeaverdam FormationCalvert FormationCalvert FormationNavesink FormationHornerstown FormationMount Laurel FormationMarshalltown FormationEnglishtown FormationMerchantville FormationsandclayGlauconiteMap ApplicationCeciltonMiddletownOdessaDelawareNew Castle County, DECenozoic EraQuaternary PeriodHoloceneupper Holocenelower HolocenePleistoceneupper Pleistocenemiddle Pleistocenelower PleistoceneTertiary PeriodNeogenePlioceneupper Pliocenelower PlioceneMioceneMioceneupper Miocenemiddle Miocenelower MiocenePaleogeneOligoceneEoceneupper Eocenemiddle Eocenelower EocenePaleoceneMesozoic EraCretaceous PeriodUpper CretaceousMap