LEADER 02160oam 2200589 450 001 9910706213203321 005 20171102085358.0 035 $a(CKB)5470000002456309 035 $a(OCoLC)891600248 035 $a(OCoLC)995470000002456309 035 $a(EXLCZ)995470000002456309 100 $a20140929d1957 ua 0 101 0 $aeng 135 $aurmn||||||||| 181 $ctxt$2rdacontent 182 $cc$2rdamedia 183 $acr$2rdacarrier 200 10$aVolcanic rocks of the El Modeno Area, Orange County, California /$fby Robert F. Yerkes 210 1$aWashington :$cUnited States Department of the Interior, Geological Survey,$d1957. 215 $a1 online resource (27 unnumbered pages) $cillustrations, maps +$e2 plates 225 1 $aGeological Survey professional paper ;$v274-L 225 1 $aShorter contributions to general geology 300 $aTitle from title screen (viewed September 26, 2014). 300 $a"Description of extrusive pyroclastic and flow rocks of El Modeno volcanics of middle to late Miocene age." 320 $aIncludes bibliographical references (page 331) and index. 606 $aGeology, Stratigraphic$yMiocene 606 $aIgneous rocks$zCalifornia$zOrange County 606 $aVolcanic ash, tuff, etc$zCalifornia$zOrange County 606 $aGeology, Stratigraphic$2fast 606 $aIgneous rocks$2fast 606 $aMiocene Geologic Epoch$2fast 606 $aVolcanic ash, tuff, etc$2fast 607 $aOrange County (Calif.) 607 $aCalifornia$zOrange County$2fast 615 0$aGeology, Stratigraphic 615 0$aIgneous rocks 615 0$aVolcanic ash, tuff, etc. 615 7$aGeology, Stratigraphic. 615 7$aIgneous rocks. 615 7$aMiocene Geologic Epoch. 615 7$aVolcanic ash, tuff, etc. 700 $aYerkes$b R. F.$f1923-$01382036 712 02$aGeological Survey (U.S.), 801 0$bCOP 801 1$bCOP 801 2$bOCLCO 801 2$bOCLCF 801 2$bGPO 906 $aBOOK 912 $a9910706213203321 996 $aVolcanic rocks of the El Modeno Area, Orange County, California$93540795 997 $aUNINA