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The Washington DC Area geologic map database (DCDB) provides geologic map information of areas to the NW, W, and SW of Washington, DC to various professionals and private citizens who have uses for geologic data. Digital, geographically referenced, geologic data is more versatile than traditional hard copy maps, and facilitates the examination of relationships between numerous aspects of the geology and other types of data such as: land-use data, vegetation characteristics, surface water flow and chemistry, and various types of remotely sensed images. The DCDB was created by combining Arc/Info coverages, designing a Microsoft (MS) Access database, and populating this database. Proposed improvements to the DCDB include...


map background search result map search result map Geologic Map Database of the Washington DC Area Featuring Data From Three 30 X 60 Minute Quadrangles: Frederick, Washington West, and Fredericksburg USGS 1:24000-scale Quadrangle for Fredericksburg, PA 1955 USGS 1:24000-scale Quadrangle for Fredericksburg, PA 1955 USGS 1:24000-scale Quadrangle for Fredericksburg, PA 1955 USGS 1:24000-scale Quadrangle for Fredericksburg, PA 1955 USGS 1:24000-scale Quadrangle for Fredericksburg, VA 1943 USGS 1:24000-scale Quadrangle for Fredericksburg, VA 1966 USGS 1:24000-scale Quadrangle for Fredericksburg, VA 1966 USGS 1:24000-scale Quadrangle for Fredericksburg, VA 1972 USGS 1:24000-scale Quadrangle for Fredericksburg, VA 1966 USGS 1:24000-scale Quadrangle for Fredericksburg, VA 1966 USGS 1:125000-scale Quadrangle for Fredericksburg, TX 1894 USGS 1:125000-scale Quadrangle for Fredericksburg, TX 1894 USGS 1:125000-scale Quadrangle for Fredericksburg, TX 1894 USGS 1:24000-scale Quadrangle for Fredericksburg, IN 1966 USGS 1:125000-scale Quadrangle for Fredericksburg, VA 1889 USGS 1:125000-scale Quadrangle for Fredericksburg, VA 1894 USGS 1:125000-scale Quadrangle for Fredericksburg, VA 1894 USGS 1:125000-scale Quadrangle for Fredericksburg, VA 1894 USGS 1:125000-scale Quadrangle for Fredericksburg, VA 1894 USGS 1:24000-scale Quadrangle for Fredericksburg, PA 1955 USGS 1:24000-scale Quadrangle for Fredericksburg, PA 1955 USGS 1:24000-scale Quadrangle for Fredericksburg, PA 1955 USGS 1:24000-scale Quadrangle for Fredericksburg, PA 1955 USGS 1:24000-scale Quadrangle for Fredericksburg, VA 1943 USGS 1:24000-scale Quadrangle for Fredericksburg, VA 1966 USGS 1:24000-scale Quadrangle for Fredericksburg, VA 1966 USGS 1:24000-scale Quadrangle for Fredericksburg, VA 1972 USGS 1:24000-scale Quadrangle for Fredericksburg, VA 1966 USGS 1:24000-scale Quadrangle for Fredericksburg, VA 1966 USGS 1:24000-scale Quadrangle for Fredericksburg, IN 1966 USGS 1:125000-scale Quadrangle for Fredericksburg, TX 1894 USGS 1:125000-scale Quadrangle for Fredericksburg, TX 1894 USGS 1:125000-scale Quadrangle for Fredericksburg, TX 1894 USGS 1:125000-scale Quadrangle for Fredericksburg, VA 1889 USGS 1:125000-scale Quadrangle for Fredericksburg, VA 1894 USGS 1:125000-scale Quadrangle for Fredericksburg, VA 1894 USGS 1:125000-scale Quadrangle for Fredericksburg, VA 1894 USGS 1:125000-scale Quadrangle for Fredericksburg, VA 1894 Geologic Map Database of the Washington DC Area Featuring Data From Three 30 X 60 Minute Quadrangles: Frederick, Washington West, and Fredericksburg