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<br />Quaternary <br /> <br />pliocene (?) <br /> <br />Miocene (?) <br /> <br />Jurassic (?) <br /> <br />Upper Triassic <br /> <br />upper-!?)Triass <br /> <br />Lower Triassic <br /> <br />Permian <br /> <br />Pennsylvanian <br /> <br />Pennsylvanian <br /> <br />Upper <br />Mississippian <br /> <br />Lower <br /> <br />i i <br /> <br />Devonian and <br />possibly older) <br /> <br />Section in <br />Muddy Mountains <br /> <br />Alluvial depodta <br /> <br />FEET <br /> <br /> <br />UNCONFORMITY <br />Mu4dy Cnek foraatiOJ\ <br />(Intarwontana clay, .ilt, conglomerate, <br />and sand; contains ..It azu! 9}'PSU!II <br />UNCONFORMITY <br /> <br />0-2000 <br /> <br />Hora. sprinq formation <br />(LtMeetone, magna.ita, ciay. .and, pte) <br /> <br />1000-2700 <br /> <br />20-3500 <br /> <br />. 00 ~rto"'.ngIMltrltl <br />'0" 00: ":.. \:0..: .~ <br />. '.:. .::.....:0.::::0.:::0.' GREAT UNCONFORMITY. <br />..,: ':':0"" .... ... . <br />...:0......... . '0' ........... <br /> <br />.;;{~i;.i~~\~~~~:G~.~Ni/If :::::.'~:.;~:::,.."d. <br /> <br />..:.....~:....:.. .', ::'.'1 "":.- <br />0:-0' ::": : : ;-0. 00 ::~:.;.:~ ::.~:.:~.~:::::: <br /> <br />700-2000 <br /> <br /> <br />Chtnle formation <br />(Shal.-, aaru:!atone. conqlCRll8rate. <br />Abundance of qypa\Dll) <br /> <br />750-3200 <br /> <br />Shinarump oon91~r.t. <br />UNCONFORMITY <br /> <br />Moenkopi fOnlAtion <br />(Lt..atone, ahale, gypaua. .and.t~n.l <br /> <br />1200-1600 <br /> <br />CONFORMITY <br />Kaibab u....t.on. <br />(Lt.e.tona, .andstone, qypau.I <br /> <br />400-700 <br /> <br />".. .. '\, ....:..;. <br />(?) ..:.....:.... <br />~'. ... ... ...'.:: ..:.......;... ",0 <br />...~..:..;.&..:.:........ <br />....... .~.. <br />.... .. <br /> <br />SUpai forution <br />(Red and 9ray .andstone and <br />gyp.iferous .hale) <br /> <br />1400+ <br /> <br />Not exposed, unknown thickness <br /> <br />ERODED SURFACE <br /> <br /> <br />callville li...tone <br /> <br />2000+ <br /> <br />PROBABLE UNCONFORMITY <br /> <br />Bluepoint li~.ton. <br /> <br />900+ <br /> <br />PROBABLE UNCONFORMITY <br /> <br />600+ <br /> <br />. <br /> <br />Rogers Spring li~ston4 <br /> <br />UNCONFO:mITY{?) <br /> <br />. <br /> <br />Mudd, Peak lilllf!lItons <br /> <br />1200+ <br /> <br />THRUST FAULT <br /> <br />Ref: Longwell, C.R., 1928. <br /> <br />USDA-SCS <br /> <br />Figure 4-B <br /> <br />CO~6uO <br /> <br />GEOLOGIC SECTION <br /> <br />10 <br /> <br />Moapa Valley Subevaluatlon Unit. Nevada <br /> <br />of the Virgin River Unit <br /> <br />Colorado River Basin Salinity Control Program <br />