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<br />Fig. 3 - Green River Oil Shale <br />Formation <br /> <br /> <br />~ <br />A <br />CCl <br />U1 <br /> <br />IDAHO I <br />.-.--. f\ <br />UTAH I W <br />FOSSIL.-,..- () <br />BASIN I V <br /> <br /> <br />I <br /> <br />I WYO.MING <br />UTAH <br /> <br />.1 <br /> <br />. Rock Springs <br /> <br />I <br /> <br />COLORADO <br /> <br />--- <br />-- - <br /> <br />Vernal. <br /> <br />. <br />Craig <br /> <br />Legend: <br />D Unappraised or Jow-grade <br />oil shale <br /> <br />~ Area of nahcolite or trona <br />~ deposits <br /> <br />~:~:.::.:::.::.:.::l Area of 25 gal/ton or richer <br />oil st1ale more than 15 ft. thick <br /> <br />II'TTTTTm Area of 25 gal/ton or richer <br />lW.llll.lI oil shale 10 ft. or more thick <br /> <br />00 <br /> <br />Federal oil shale lease tracts <br /> <br />l <br />.,. <br /> <br />Naval Oil Shale <br />" Reserve No.2 <br />,; <br />:3 <br /> <br />." <br /> <br />GN <br />~ <br />, <br /> <br />I <br />o <br /> <br />1 I <br />25 50 <br />Miles <br /> <br />^ <br />e~ <br />