01975oam 2200553 450 991070629690332120170927104613.0(CKB)5470000002455464(OCoLC)891598788(OCoLC)995470000002455464(EXLCZ)99547000000245546420140929d1950 ua 0engurmn|||||||||txtrdacontentcrdamediacrrdacarrierConfiguration of the bedrock surface of the District of Columbia and vicinity /by N.H. DartonWashington :United States Department of the Interior, Geological Survey,1950.1 online resource (vi, 42 pages) illustrations, maps +4 platesGeological Survey professional paper ;217Title from title screen (viewed September 29, 2014)."This report embodies subsurface data of interest to engineers and builders compiled from 1890 to 1940."Includes bibliographical references and index.Bedrock surface of the District of ColumbiaBoringsWashington Metropolitan AreaPetrologyWashington Metropolitan AreaPhysical geographyWashington Metropolitan AreaBoringsfastPetrologyfastPhysical geographyfastWashington (D.C.)fastBoringsPetrologyPhysical geographyBorings.Petrology.Physical geography.Darton Nelson Horatio1865-1948,1387618Geological Survey (U.S.),COPCOPOCLCOOCLCFGPOBOOK9910706296903321Configuration of the bedrock surface of the District of Columbia and vicinity3464257UNINA