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<br />'ri<<f,~'~ <br /> <br />Urd) <br /> <br /> <br />o <br />1 <br />o <br /> <br />w <br /> <br />20 30 40 MILES <br />I~ <br />30 40KILCMETERS <br /> <br />10 20 <br /> <br />EXPLANATION <br /> <br />ERA DURATION SYMBOL AND FORMATION <br />(MILLIONS nF YEARS) <br /> m <br /> "Tv Tertiarv volcanics <br /> 1+ -tu+1 Uinta Formation <br />Cenozoic 63 . Green River Formation <br /> I ~~~-~ I Wasatch Formation <br /> . Green River and Wasatch <br /> Formation, Undivided <br /> ~Kmv~ Mes8verde Group <br />M.sozoic 177 ~~0.j Manco8 Shale <br /> 00hI Cretaceous, Jurassic, and Triassic <br /> sedimentary rocks <br />Paleozoic 330 [:ill Permian and Pennsylvanian <br />. . sedimentary rocks <br /> <br />CONTACT <br /> <br />Figure 2.1-1.--Generalized bedrock geology. <br /> <br />9 <br /> <br />2,0 GENERAL FEATURES <br />2.1 Geology <br /> <br />.j..",-,,<~. <br />