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<br />, ",..,.~ <br />~'~,~:,:,:1 <br /> <br />"~. <br />"'-'i. <br />':;'."<? <br />".",,/", <br />'~1l/ <br /> <br />00 <br />CO <br />C) <br />-t <br /> <br />rlancos shale format ion>> 1Ic,':; and 't.Jill'1.0nl:~ F{n-k member-A 0 f thc' ::;f~:-;a-/E~ " ((; <br /> <br />format ion, and the Bro\ms' P,n'k format ion. [.ire found in tlh~ ,Tr('.:~. <br /> <br />Because of their widespread distribution and differing m~na" <br /> <br />of formation, lands in the project irrigAtion service area have T~,:h .. <br /> <br />wide variations in topographic and soil conditions. <br /> <br />Lands of the \.Jhite River segment lie in an open basin ",hieh <br /> <br />is dissected by nUmerous drainaget-lays, resulting in slightly elevate,' <br /> <br />fans and terraces with valleys between. Small drainageHays eoursinp, <br /> <br />to the mlite River result in an undulating land surface. Lends of <br /> <br />the Milk Creek segment are cut by numerous nearly parallel dr"inag"~'d' /S <br /> <br />eroded by runoff from the surrounding hills. The irrigable lands <br /> <br />are located in the flat valley bottoms and narrow elevated fans or <br /> <br />terraces. <br /> <br />r)~:,> <br /> <br />All of the project lands have a rolling relief as elevated <br /> <br />fans separate the flatter valley bottoms. Slopes are generally abou~ <br /> <br />5 percent on the fans and terraces and I to 2 percent On the valley <br /> <br />floors. Transitional areas between the terraces and the vaj,ley H(>o;cs <br /> <br />have slopes up to and exceeding 12 percent. <br /> <br />The geologic formations listed belOt" are presented i.n the <br /> <br />project area. <br /> <br />Age <br /> <br />Tertiary(Ni.ocene) <br />Tertiary(Eocene) <br />Terti,sry(Eocene <br />Cretaceous <br />Cretaceous <br />Cretaceous <br />Cretaceous <br /> <br />Thickness <br />.. '" + <br />--':2:(_,,-t~L_ ... <br />1, aCiC'J;t <br />2;?OO-3,.SOO <br />ll, :.:1:)0 <br /> <br />Formation <br />:lrowns Park sandstone <br />Green River marls tone <br />Wasatch sandstone and mudstone <br />\~ill iams Fork sandstone and shale <br />Ties sandstone and shale <br />j~;mcos shale <br />j)akota sandstone <br /> <br />1.,2100-5,000 <br />1, ~\50 <br />5,000 <br />:",0 <br />