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DGS Geologic Map No. 21 (Trap Pond and Pittsville Quadrangles, Delaware) Dataset

DGS Geologic Map No. 21 (Trap Pond and Pittsville Quadrangles, Delaware) Dataset
Primary Data Category:
Publication Date:
Jun 2014
Update Status:

This vector data set contains the rock unit polygons for the surficial geology in the Delaware Coastal Plain covered by DGS Geologic Map Series No. 21 (Trap Pond and Pittsville Quadrangles, Delaware). 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.

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Web Map Service (WMS) Information


Layer Names: geomap21

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Spatial Reference System(s)
NAD83 State Plane Meters

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Please give proper credit to the Delaware Geological Survey.