02136oam 2200541 450 991070770670332120161130152302.0(CKB)5470000002467486(OCoLC)885121836(EXLCZ)99547000000246748620140802d1964 ua 0engurn||||||||||crirdacontenttxtrdacontentcrdamediacrrdacarrierGeologic reconnaissance of the Antelope-Ashwood area north-central Oregon, with emphasis on the John Day Formation of Late Oligocene and Early Miocene age /by Dallas L. PeckWashington, D.C. :United States Department of the Interior, Geological Survey,1964.Washington, D.C. :Government Printing Office.1 online resource (iii, 26 pages, 1 page of plate) illustrations, maps, charts, photographsGeological Survey bulletin ;1161-DContributions to general geologyTitle from title screen (viewed July 24, 2014)."Prepared in cooperation with the State of Oregon, Dept. of Geology and Mineral Industries."Includes bibliographical references (pages 25-26).Geologic reconnaissance of the Antelope-Ashwood area north-central Oregon, Geology, StratigraphicTertiaryGeologyOregonCrook CountyGeologyOregonJefferson CountyGeologyOregonWasco CountyGeologyOregonWheeler CountyGeology, StratigraphicGeologyGeologyGeologyGeologyPeck Dallas L(Dallas Lynn),1929-1391217Geological Survey (U.S.),Oregon.Department of Geology and Mineral Industries,COPCOPOCLCOGPOBOOK9910707706703321Geologic reconnaissance of the Antelope-Ashwood area north-central Oregon3465263UNINA