02542oam 2200649 450 991070696130332120180412075403.0(CKB)5470000002459864(OCoLC)896810620(OCoLC)995470000002459864(EXLCZ)99547000000245986420141123d1978 ua 0engurmn|||||||||txtrdacontentcrdamediacrrdacarrierPrincipal unconformities in Triassic and Jurassic rocks, western interior United States a preliminary survey /by G.N. Pipiringos and R.B. O'SullivanWashington :United States Department of the Interior, Geological Survey,1978.1 online resource (iii, A29 pages) illustrations, mapGeological Survey professional paper ;1035-ATitle from title screen (viewed October 6, 2014)."Unconformities, correlation, and nomenclature of some Triassic and Jurassic rocks, western interior United States.""Description of nine widespread unconformities in Triassic and Jurassic rocks."Includes bibliographical references (pages A26-A29).Principal unconformities in Triassic and Jurassic rocks, western interior United States GeologyWest (U.S.)Geology, StratigraphicJurassicGeology, StratigraphicTriassicStratigraphic correlationWest (U.S.)GeologyfastGeology, StratigraphicfastJurassic Geologic PeriodfastStratigraphic correlationfastTriassic Geologic PeriodfastUnited States, WestfastGeologyGeology, StratigraphicGeology, StratigraphicStratigraphic correlationGeology.Geology, Stratigraphic.Jurassic Geologic Period.Stratigraphic correlation.Triassic Geologic Period.Pipiringos G. N(George Nicholas),1918-1399660O'Sullivan Robert Brett1923-Geological Survey (U.S.),COPCOPOCLCOOCLCFGPOBOOK9910706961303321Principal unconformities in Triassic and Jurassic rocks, western interior United States3505125UNINA