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(.r1.~ • (~r1r •I r.llur'k ante ru 1, ru u,l~Ir., .i lu '!., Lt rrrnl
<br />tanpr.. 'this gentle slnpiug in nunlr ~ Iv sleep map.
<br />ping twit is about GO percent Cclr~t~.L'enu•ly ston}•
<br />loam :old 4b percent Knrk outcrop. IL Ls mainlc in
<br />nunnrtainnus :u'cas. L+ umn}• shall arcs the slope
<br />r;u~};OS to 1(10 pcrt•mil. 'T'here sec mane narru+v c;dle}'s
<br />:u,d rlrninngct}';q's. Gullies ,^, to R feat rlcap noel :. to 12
<br />fret +vide have fnrnx•d in most oC the Batley's. 'T'hese
<br />gullies r:u r}' runulf during sort after rains. P,nck out-
<br />crop consists of espnsures of berhurk and Berticnl cliffs
<br />and escarpments yrith ]0- to 70-foot cb'ops. Alan}' I:u•ge
<br />boulders are on the slopes beloyc the esc:u'pments.
<br />lnclurled yeith this unit in nulpl»ng are small areas
<br />of Jorlero loam in the neuron' vallecs ;Ind sm;dl :u'eas
<br />of n very' shalluyr soil, less than 10 inches deep over
<br />bedrock. Lh;It is intermingled ycith the Pack outcrc,p,
<br />About :i percent of this unit is included :ueas of Garita
<br />cobbly loam and Travelers cer}' stun} loam.
<br />F,unoff is rapid. The h:¢arrl of ycatcn' crosin^ is high.
<br />'Phis mapping unit is used fur rsnl~c :aid ,wildlife. It
<br />is an imporLult habitat for deer. Capal,iliic unit 1'ils -]
<br />nonirri)•ated; Celeste soil in Ducky Foothills rnu;;e site;
<br />Puck outcrop not assigned to a range site.
<br />Derrick Series
<br />The Derrick series consists of yecll drained sails ]0
<br />l0 20 inches drop neer gravel anr] cobbles. TLr-se sails
<br />formed in cobbly alluvium nn alluvial fans and ira rn, es.
<br />Slopes ;n'e 0 Lo 3 l,rrccnL. lacvatinn is 7,600 to 8,400
<br />feet. ?datural ceoretation is rluminantly blue grams, ring
<br />muhly, sand dropseed, and love rabbitbrush. The
<br />average annual precipitation is about 7 inches, the
<br />mean :uuntal air trml,aralnre is about 41° F, and the
<br />frost-free season is 00 to IO:; rhn's.
<br />]n a representative profile the sn'face h,cer is d;uk
<br />grayish lira+en cobbly loom about 4 inches thick. 'the
<br />subsoil is dark bron'n eery' gravelly chn• ]u:,m or eery
<br />grat•ellp loam about 7~ inches iLiek. The substratum
<br />is ;,•t;'twel, cobbles, and sand tlutL o~(eud to a depth of
<br />GO inches or more.
<br />Perms++bi{it}' is moderate, anri the ac.'tilnble w;Iter
<br />capacity is loyv or moderate. 1:e;,cLiun rouges from
<br />neutral to'moderately' alkaline. 'the elfcclive rooting
<br />depth is 70 to 20 inches.
<br />'Phew sails are used for range, irrigated crops, ;Ind
<br />ywildiife.
<br />]iepresentatiwe profile oC Derrick ,,.l,bly loam, 1,500
<br />feet nest of the nart.heast cm'ner sec. '?, 'P. 37 N., F..
<br />7 E.
<br />Al--0 to 9 inches; light hraacnish gr:,y (]0}'R Gl^-)
<br />rubbly loam, dark gr:gish h,ro,rn (107 R 4/2)
<br />moist; nuulra'alC fine t;~:,nub,r o-iru<lurr; =aft, vrrv
<br />fl'iaLle; 35 prru•nL Bubble= and gra wr•I; oral cal;
<br />gradual s,nooth Lau min r}•.
<br />Bet-4 l0 14 inches; Lro„'n (5,51'R 5/3) ,Cry g,a+rlly claw
<br />loam, dark bro,cn (i.51B 4/.4) moist; avcak
<br />medium prismatic sl ructure parting Lo moderate
<br />fine su hangular block}'; hard, friable; Thin nearly
<br />coati nnmrc clay films on peels and in root rhanurls;
<br />GO prrornt rattles :,nd 1; r:n'cl; mildly alk:di ur;
<br />clear ,car}' L~u,ola ry.
<br />Rica--]4 l0 1. iurLrs; ln~o„n (10}'R 5/'1 eery rrwrll}•
<br />loam, dark brman (l U1'P, 4/3) moist; wtak nicdium
<br />suhangular blocky strum m'e; soft, eery friable;
<br />few thin patchy clay films an peds; 70 percent
<br />~ cobbles and gravel; visible secondary calcium car-
<br />bonate occurring as concretions in thin seams and
<br />streaks and as coati nla on coarse fragments; cal-
<br />careous; moderately alkaline; gradual vcac? hound-
<br />arw.
<br />11Cea-]i to GO inches; sere graa'ellc sand: rs rhnnate
<br />coatings on cna rse fragments; GO percent rubbles
<br />and gravel.
<br />The Al horizon is 3 l0 6 inches thick and is rnhLly loam
<br />to graven}' sandy foam. The R?t horizon is d to ]? inches
<br />thick and is cer}' cobbly cla}' loam in some pedons. The
<br />conical of gravel and cobbles in the A horizon ranges from
<br />3o t~ 50 percent and [ram 35 to i0 {K•n'ent in the R horizon.
<br />lieu' to lime nnaec from 8 to ~0 lushes.
<br />14•-Ihv rich rnLhlr Ln,.n. 'Phis ne:+rly level ar ver)•
<br />grotty sloping ~urcupics alluvial fans ;+nd terraces.
<br />Slnln•s :u'r 0 to . ercent. ALrntt 1:. percent of this unit
<br />is iurludrrl :u'cas of Gra}•point gravelly s:mrly lo:un and
<br />enuill :,rc;,.c of 1'L•+Laro In:un :Tart I>uaul cobbly sandy.
<br />1o:un.
<br />I;muAf is .elua•.'I'he arusion haz:u'd is slight.
<br />'f his sr,il iv a=cr1 mninh' for range :u,r] +cilrllife. Some
<br />small ;n'eas arc used fur irrigated crops. Capability
<br />unit 1\'s-] irrigated, \'lls-7 nunirrigated; i\fountain
<br />Outyy:ISh range site.
<br />Dunul Series
<br />The Dunul series consists of e~ccssively drained
<br />soils G to ]0 inches rlcep over gl;rcel, cobbles, anri sand.
<br />These soils fw'tned in cobbly alluvium on allut•i:Il fans.
<br />Slopes are 0 to I percent. F;levxtion is 7,C,00 to 7,000
<br />feet. Natural vegetation is dmninantly blue grams,
<br />Indi:ur ricc;;rass, snake++ecd, and luyv rabbitbrush. The
<br />awern ge annual prer,ipita(iun is about 7 inches, the
<br />mc:m annual :Iir tetnperaturc is ;ILout 41° F, and the
<br />f l'V.SL-fl'C'C Sl'a5a11 15 ~O t0 1 OS days.
<br />In a re)rresenl:ttive profile the surface la}'er is dark
<br />grayish brown cobbh' s:+nd}' loam about 10 inches thick.
<br />The underlying material is dark grail eery gravelly
<br />sand that extends to a depth oC GO inches m' more.
<br />Pcrnlt•al,ility is rapid, and the available +y:+ter
<br />r.+parity is Inyc. P.cartion is moderately alkaline. The
<br />effective rnntinr depth is fi to ]2 inches.
<br />These soils :u'e used far irrigated crops and for
<br />range.
<br />pcprr<enlative profile of Dunul cobbly sandy loam,
<br />1,"~00 feel ca.cL :u+d "00 feet north of the suuthywest
<br />r,n'uer sec. 1 R,'I'. 40 N., lt. 8 F.
<br />Ap 0 to ]0 i,~r~~rs; grayish 6ro+cn (]01'R 5!°_) cobbly
<br />sandy lo:un, dark gray,sh brown (]OSR 4/?)
<br />mni sl ~ uindi~ra le Gne grnnilar structure; soft, cer}'
<br />friable; 3S percent cobbles and ?a pe event gravel;
<br />slightly role, rcnus; mndrr:t(CI}' alk:dine; di Ruse
<br />snonlh Lan arts r}'.
<br />C- 10 to GO inrhrs; gray (]0]`R 5/1) +ery' gra cellp sand,
<br />dark g,:ay (]01R dJl).moist; single grained;
<br />Nose; .0 percent gravel and cobbles; calcareous;
<br />nv..ier:,L fly alkaF ne.
<br />The .4 ho riznn is 1 to ]0 inrhrs thick. It is r-ra rrllp sand}'
<br />loam in sninC fields wb~~re most of the cobbles have bcen
<br />n wo, cd by earl picking rn:rrhi ncry. 'f hr ronicnt of gravel
<br />and rulitdrs in tb!• A Horizon ra,igrs from 34 to .0 percent.
<br />The C h,~riznn is sere gra~olly s:uui or c„n' cobbly wand.
<br />Dn---nunul rnhlrh' ~:unh~ In:nn. 'I•llis +~earl}- level
<br />soil occupies large ;+reas aL tLe upper end of alluvial
<br />fans in the narfh-ccaifral part of the Area. Slopes are
<br />0 to ] percent. About ?0 hc•rrenl of this unit is included
<br />;,real nf'Qu;nnun ~racelh' sandy lo:nn and ]0 l,crcent
<br />;u'ca.c of \ urte giay ell}' sandy loam.
<br />F.unnff is sluyw. "fhc• erosion ha;;;u~d is slight.
<br />]f }water is acailnble, mast of the ;ICrcagc is used for
<br />irrigated l,aLatucs, small grain, alfalfa, and Brgetables.
<br />Fume arras are used for r:,nge. Capability unit 1Vs-1
<br />irrig;dcrl, Vlls-7 nnnirrig;Ited; AfntnlUlin Outywash
<br />1'a n;{C vlt.C.
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