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<br />001068 <br /> <br />l'L4T:'E R:tV"'..R BASIl! ,INVeSTJ:GA'l'IOllS <br /> <br />PMT II - NOR'l'lJ PLl\.Ti'F: ruVZB MSm <br /> <br />J - !)e$ol":!.ptive <br /> <br />,1 <br /> <br />26. Topogra:(ih,v (Cont'd) <br />(3) Domi.nw1t Featurel'l (Cont'd) <br />(d) Interior Plains <br />- <br /> <br />Inaddit10n to the lAramie Plains, vlhioh has 'b6en briefly desoribed, <br /> <br /> <br />there is anot1lar reg:ion or valley which miGht be classified tltl an interior plain, <br /> <br />beosuseits daninant vegetation is short [",raso. and beoause its llUr1'aces are oom- <br /> <br />po.rnti vely level. <br /> <br />This rec;1on oocupies both si@s 01' tho Sweotwatar Rivar valley, bag1rmng <br /> <br /> <br />almost at its headwatoro !lnd extending to l'athi'inder tlosol'Voir) 1 t oontinues (largely <br /> <br /> <br />on the North side) alon,; tho llorth Platte River down, to the eenertll vioinity of: <br /> <br /> <br />Casper) thG:noe enst-.mrd on both sidell of: the ll'orth Platte Vdley (exoopt as broken <br /> <br /> <br />at intervals by tributnry valleys) to the general vioinity of tho tOVln 01' Douglas, <br /> <br /> <br />wllQ\'1Il it );jargas craduaJ.ly into tho Great Plains. <br /> <br />(e) Great Plo.ins. <br /> <br />Tlw Gr.at Plnina, 0,1' High Plains, extend eastward fram the Rooky <br /> <br />Mountains. fro;]! soutl1l)astel'n Wyoming riUld eastorn Colerado, into llebl'askll. dnd Kanso.s. <br /> <br />They are relatively flat riUld are oovered. or partially oovered with short-Grass. a <br />native ve~tll.tion t4111: diffors 1'rcm tho tall eraas of tho lower ancl !:'lOI'O humid <br />plains of oen:brnl and eastern llebraska and Kansas. <br /> <br />Tho Great Flains oonai st 01' sad1montary dopos:!. ts (l'ertiary) whi oh di ffer <br /> <br />in oan.posi tion~ g:!.ving rillO to soils, woatllored from them, that rriUlge from hOll.V"1 to <br /> <br />liGht '~o:x:tur&. Suoh dii'forenoon in tho ooils e;ive l':!.O('l to difforenoos in surface <br /> <br />drsiIW.(;o oonditions and ara faotors, togotlwr withtho anounts of prGo:!.p:!.tat10n, <br /> <br />"10- <br />. <br />