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Explanation <br />ALLUVIUM. Stream and Ilood plain delweit e. <br />a Oal <br />o' <br />IGNEOUS ROCKS. Irdrueive dikes, plupe, and ^ille of andeeile, <br />docile, and latite. Eatrueive basalt Ilowe an <br />brecciae, ondaeile tinder tones and ecaioe, <br />e <br />c <br />BROWNS PARK FORMATION. Sondtl one and con Qlomercle up t <br />`-yT,bP` 2000 Ihick, panerally about 200 fo 500 Ih <br />LANCE FORMATION. Moelly shale with occasional eandMOna and <br />cool beds, 1000 to IS00~ thick, <br />f <br />I <br />J <br />i <br />J <br />LEWIS FORMATION. Chiefly shale, 1500 to 1900 (hick. <br />IOe. <br />K WILLIAMS FORK FORMATION. Interbedded sondslone, eMla a <br />Y Ksrf Kw coal, II00~ l0 2000 thick. Kwl - T.entymll <br />sandstone member near middle of lormolion. <br />u <br />KN ° ILLS FORMATION. Sandslona and ^hole, cool in upper port, II <br />Ki Ihiek, Kit -Trout Creek sandstone member d <br />top of lormafion. <br /> <br />From Color ode Geolo picel Surrey Map Series 1 Routt County. <br />. re rr rr rs <br />Now 9 rI N0 <br />MANGOS FURMAT ION . Moslly ^hole, 4900 thick, includes <br />SCALE <br />0 1 = 7 • ~ 6 erl~[S <br />0 1 x s• e e ~ o f io .~~oYtnes <br />- Benton, Niobrara, and Fronliar Formations. <br />SCC Mine Sites <br />LEGEND <br />Cmtoct Mau ca.ur N <br />Hipp Angle Moult -~-~- <br />Anlidir,e ----~- <br />bee CberN ti Yq <br />Syncline -`-- <br />COLORADO <br />FIGURE 1 <br />Regional Geologic Map <br />of the Yoest Permit Area <br />and tfie Surrounding Regfon <br />