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C <br />T <br />R <br />u u ~ <br />o `o <br />occ <br />L <br />F <br />c <br />U <br />u y. >. b <br />oC m my <br />.-+ <br />d <br />Q <br />.1 <br />u <br />c <br />.~ <br />C <br />0 <br />N <br />ro <br />CJ <br />4) <br />O <br />0 <br />_+ <br />m <br />1 G <br />w <br />l d <br />d <br />J ~ <br />3. <br />W I <br />_~ 1 ~ <br />.~-: a <br />t = <br />N <br />~ ya <br />l ~> <br />1 ~~ I <br />J N m `u <br />pa a <br />U ~ ; <br />~z <br />D a <br />z <br />mu, <br />1 <br />ERAS SYSTEM OR <br />PERIODS SERIES OR <br />EPOCHS MILLION <br />YEARS* SOME)MPORTANT GEOLOGIC <br />EVENTS IN CALIFORNIA <br /> <br /> <br />Quaternary Holocene <br /> <br />Q <br />01 Contlnustl taultlnp, mountaln Dulltllnq ane <br />lantlslltla lormatlon. Mppntaln Dulltllnq <br /> , auotlatetl wltn Coast Rarpe Oropeny. <br /> Pleistocene <br /> 2 t <br />3 <br /> o Formation o! messlva ancient lantlslltles. <br /> Pliocene Eruption of Sonoma Volunlts. <br />CENOZOIC <br />Miocene 12 Prlntlpal Dulltllnq o1 Coast antl Transverse <br />Ranges. <br /> 26 Local movements In Coast antl Transverse <br /> Tertiary Oligocene Ran9°`' <br /> 36 <br /> <br /> Eocene WltlasPreaO coastal Wt. <br /> 54 <br /> <br /> Paleocene <br /> 65 <br /> <br /> Cretaceous Bulltllnp of tns Sierra Nevatla, Klamatn antl <br /> 136 Ponlnsular Ranges. <br />MESOZOIC Jurassic <br /> <br />190 Shallow wa <br /> <br /> Triassic <br /> 226 <br /> Permian <br /> 8 <br /> 2 <br />0 <br /> Pennsylvanian Volunlsm antl mountaln bulltl lnq (extent <br /> unknown) <br /> 320 <br /> <br /> Mississippi <br /> <br />PALEOZOIC <br />Devonian 345 <br />PfODiDly shallow sea over much of Call/ornla, <br />Cam Drlan to Perm Jan. <br /> 395 <br /> Silurian <br /> <br /> 440 <br /> Ordovician <br /> <br /> 500 <br /> Cambrian upllre <br /> <br /> 570 <br /> Mountain Dulltllnq In Southern C+Il/ornla. <br />PRECAMBRL4N <br /> Oltlest rocks antl mountalna. <br /> p enn~ <br />•Before the present. <br />Figure 2 <br />GEOLOGIC TAlE SCALE <br />REFERENCES: <br />Motlifletl alter: <br />Holmes, A., 1965, Prlnclplet of Physical Geology: <br />Ronaltl Press Cpmpany, New Vork, 1288 p. <br />Oakensnott, G. 8., ]971, Calllornla't Changing Lantlsca pas: <br />McGraw-HIII Book Company, Naw York, 38B D• <br />