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<br />fTY, C"OI,ORADO
<br />'l j,
<br />- 12 ~Oll. 5l
<br />loam, which occur on;thti' ~Stts of the laud?
<br />`
<br />scape, generally f:lrther aww~yygg
<br />x~~nchalu}el.tl~t,>a
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<br />s are; a
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<br />mas;~
<br />t"a
<br />ti
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<br />~.2 acres in size, which occur asst E
<br />epi'~silius:'~-:.
<br />These soils are Iwt $tli_ toy-er~tivated clops becaas6 they
<br />are sandy aud~subj?ci.,'9ooilfn~g "Tlle~y take in router
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<br />g bat hav@. a
<br />b
<br />n~,clip9c
<br />ty, T
<br />ty
<br />ow;wQte
<br />d
<br />are
<br />sp ct to deposition of sand and silt .during floods, and
<br />Co cutting during floods and't~li?;,~it~~1eriods cchen [hp
<br />gbl~tlel changes location. Ranoff• is very slgw.,~71e erosion
<br />h.•liard is modet•Ate. • "'•.~; `'
<br />`All of these soils Are used as pasture.'They suppply sub':
<br />stantia] amounts o#.nsable forage durilg periods of ]ti
<br />-
<br />t
<br />~
<br />water. (Capabilit.y ]fait IVs
<br />2, Irriga
<br />ed; capability i1115
<br />YIw-2tnoun'rlguted; Sandy..Bottom Land range"sif
<br />:,: .~
<br />Cascaio Series ~`- '
<br />The Cascajo series consists of strongly sloping to very ,M! =id~ti
<br />strongly slnpln~r soils that Are shallow over limy, very ~ -•w
<br />'
<br />s;uldy and grncl~lly outlvnsh. These soils are mainly m the `- •. „ ,
<br />north-central p:u•t, of the county, just north of the Johu
<br />Martin Reservoir. ~. - A`
<br />~
<br />In a typical profile the surface layer is pale-broml '
<br />J
<br />gravelly loam about 5 inches thick. The nest layer is light r
<br />, : -
<br />;
<br />6rowni.=,h•~rrny gravelly ]oaln that grades to grace] slid ~
<br />'•'n
<br />sand at n depth of about 10 inches. 1'he gravel aud•sand
<br />aI~ eery ]im}•. Grnernlly the underside of the gravel (fig. '' ~
<br />Ci) is lime coated.
<br />~
<br />These soils AI•e too gravelly and too shallow to be suited _ .
<br />to cultivated crops. They are naturally well drained, They ~, -
<br />have rapid internAl drama •e, rapid permeability, ap~,,•1
<br />~ _
<br />low n atcr-holding capacity.
<br />nt.urAl fertility is low. Tfiere
<br />is gosignificant hazard of soil blowing or of ~gter erosion, -
<br />beeause of the eery gravelly surface layer, s* `s' r..
<br />;
<br />The entire acreage Is used as range.' r
<br />~ z •~
<br />~~ ~
<br />~
<br />`
<br />Typical profile of A Cascajo gr;n•elly loam (GO feet south `
<br />~
<br />.
<br />,and 1.5 miles east of roast ]unction, sec. 1/ T. 2S S., R. ~-' rk f"'
<br />
<br />Al-0 to 5 inrbes, pole-brown (l0yR 8/3) g[e veIly loam, dart' .. ~
<br />grayish brown (10}'R +/?) irhen moist; massive; Imo
<br />
<br />. Inure worn drS, very friable when moist; nnncalrnre-
<br />~ .
<br />,
<br />flnP gravel: ~~
<br />bus: clra r, smooth boundary; mnrh
<br />AC-:. to SO iuchrs, light b'ronTish-grnS (IOCR fi/?) gravelly.
<br />'
<br />`. Figure 5.-Profile of Caseajo gravel] loam. Lime has accumulated
<br />~ on underside o gravel.
<br />Inn m. brown (lU]
<br />R ~r/R) when moist; massive; soft
<br />when dry, very friable when moist; very strongly cal-
<br />~n reuus: rlea r, smooth boudda ry; many roots; a little
<br />' ,r
<br />Alld .LY SCattel'ell SIl all :11'ea5 thI'I111p11Ullt the
<br />Resel'enlr
<br />Ii111e~COated gr;lvel.
<br />Clru-ln to 17 inches, very hale brown (1n]R 7/3) limy grovel
<br />h
<br />i
<br />i
<br />- ,
<br />county. These areas are strongly sloping and hill}. ('nsrnju
<br />)th of alulnt 1
<br />to a de
<br />ts
<br />ll
<br />l
<br />t
<br />and sn ud, Dnle brown (30]
<br />rn mo
<br />las•
<br />R G/3) w
<br />st; l
<br />~ l
<br />es
<br />y
<br />oam In
<br />a
<br />eons are pprave
<br />I
<br />'
<br />'
<br />6oundary; mach coarse, I1me-
<br />. slue; abrupt, smoMR Y.IIf.
<br />11-
<br />I
<br />lashes. TI1e1C Slope is generally less th:ul 12 pel
<br />rnnfed grace], roofed mainly on the underside; very
<br />etrangly calcareous.
<br />I eluded in moppingg were spots f Harvey lonnl, un nun's
<br />h;uu loam
<br />f Jron
<br />C^'17 to 8o inches, relaGicely clean gravel pod sand; atroasb•
<br />• calcareous. ,
<br />e
<br />' lace( ports of the ]andscllpe, uuc skklots o
<br />`nn more level parts and also in slight. depl•essions.
<br />The Al horizon ranges from 4 to 6 inches iu thickness and
<br />irom gravelly loom to gravelly rangy loam N texture. The AC These soils take in water reA ly 5ttlt hove .1 loa~ e~nter-
<br />; hoI(Iing r;l ucity. Runoff is slo to mediuul- 'Che ermion
<br />horizon ranges [ram v to 1'? inches in thickness end grades into
<br />~ I hazard is slight to modentte.
<br />becoma shallower with Increasing
<br />very limy grn'el. These .co115
<br />'
<br />Tone of the uereage bus ever en cultiva~ed..Ul of rt N
<br />elope.
<br />Ca scajo soils arc more gravelly than eimer Harvey or ~ used ns range. Deferment and r tatiun of gt•:tzulg help iu
<br />,lhilil}~
<br />(('a
<br />r
<br />si
<br />n
<br />li
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<br />Stoneham soil.. p
<br />o
<br />o
<br />.
<br />ng e
<br />contrr
<br />on an
<br />~ iwpro}•ing vegetat
<br />Cascaio soils and ravelly land (a to20 percent slopes) i oast VIIs-}, uoun•rij,+ated; Gray 1 13reuks r:ulge site)
<br />'
<br />ILa .- us wnl Is n lout alp perceu 'usc•ujo soils and about I
<br />:il) percent. eery' steep, rough, broken aryls of gravel. It Colby Series
<br />ilecurs ds elonr+ated, irre~rlilnrly shaped arws, mainly in
<br />i~6he. north-central part
<br />just north of the Johu Marti^ ' The ('olby' series consists of • sully sloping, lim}' soils
<br />, i that. formed in silty, lim}• loess These soils occur w all
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