01907oam 2200505 450 991070655530332120171129102032.0(CKB)5470000002456894(OCoLC)892425206(OCoLC)995470000002456894(EXLCZ)99547000000245689420141006d1961 ua 0engurmn|||||||||txtrdacontentcrdamediacrrdacarrierAsh-flow tuffs their origin, geologic relations, and identification /by Clarence S. Ross and Robert L. SmithWashington :United States Department of the Interior, Geological Survey,1961.1 online resource (vi, 81 pages) illustrations (some color)Geological Survey professional paper ;366Title from title screen (viewed September 30, 2014)."A study of the emplacement, by flowage, of hot gas-emitting volcanic ash; its induration by welding and crystallization, and criteria for recognizing the resulting rock."Includes bibliographical references (pages 50-54) and index.Ash-flow tuffs Volcanic ash, tuff, etcMineralogy, DeterminativeMineralogy, DeterminativefastVolcanic ash, tuff, etcfastVolcanic ash, tuff, etc.Mineralogy, Determinative.Mineralogy, Determinative.Volcanic ash, tuff, etc.Ross Clarence S(Clarence Samuel),1880-1975,1388979Smith Robert L(Robert Leland),1920-2016,Geological Survey (U.S.),COPCOPOCLCOOCLCFGPOBOOK9910706555303321Ash-flow tuffs3513273UNINA