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Fe tab lashed Be [lee
<br />Rev, ASC
<br />10/72
<br />~~HESPEAUS SRRIRS
<br />The Hesperus •e rise Se a member~of Che fine-loamy, mixed family of Path le Argl6orolle. Typically, •
<br />Has pe rus soils have dark gray friab la granular noncalcareous A horizons, dark brown noncalcareoua
<br />light clay loam B2t horizons having prismatic and blocky etructute, and btwn nonce lcareous loam
<br />C horizons,
<br />Typl Eying Pedon: Hesperus loam - grassland
<br />(Colors are for dry soil ~unleee othetviee noted.)
<br />Al 0-6"--Dark grey (lOYR 4/1) loam, black (lOYR •2/1) moie [;'moderate fine granular and crumb
<br />structure; soft, very Erlab le, eli gh tly etirJcy, eligh tly plea tie; noncalcareoua; neutral
<br />(pH 6.8); steer smooth bowdary.~ (4 to l0.ldchea thlck)~
<br />B1 6-11"--Dark gray (l0YR .4/1) heavy loam, black (lOYR 2/1) arofet; weak medium prismai is
<br />strut[ ure chat parts to moderate fine eubangular blocks; eli gh tly hard, very friable,
<br />alight ly sticky, ell gh tly plastic; pede ere hard; Eev glossy patches on Eaces of pe ds;
<br />noncalcareoua; neutral (pH 6.8); clear smooth boundary, (3 to 8 inches [hick)
<br />B21t 11-29"--Dark brown (lOYR 4/2) light clay loam, very dark brown (lOYR 2/2) mole t; moderate
<br />medium prismatic s[rvct ure that parts to moderate Fine eubangular blocks; ali gh tly
<br />hard, very~friab le, alight ly sticky, elEgh tly plastic; pede are very ha rdl nearly continuous
<br />wax-like coatings on faces of pede; wax-like coatings and fillings on the inside of
<br />root cham~ele end wax-like time around the entrance to soil pores; noncalcareoua; neutral
<br />. (pH 1.0); clear smooth boundary.. (10 to 24 inches thick)
<br />B22t 29-38"--G coyish bran (lOYR 5/2) light clay loam, very dark gray Lah brwn (lOYR 3/2) moist;
<br />moderate medium prismatic structure that parts to moderate fine subangular blocks;
<br />slightly hard, very frlab le, slightly atltky, slightly plastic; pede ere very hard;
<br />thin nearly con [Snuaua vex-like coatings on faces of pads; wax-like coatings and fill!rgs
<br />on [he inside of root channels; noncalcareoua; neutral (pH 7.0); clear smooch boundary,
<br />(6 [0 30 inches [hick)
<br />B7 38-44"--Brwn (lOYR 5/J) light clay loam, dark brwn (lOYR 4/3) mole t; weak medium sub angule.r
<br />blocky structure; hard, friable, slightly sticky, eligh [ly plastic; pede ate very hard;
<br />few thin gloeay patches on Eaceb of pede end few die continuous glossy coatings on the •
<br />Lnei de of root channels; neutral (pH 7.2); gradual smooth boundary. (4 to 8 inches
<br />[hl ck)
<br />C 44-60"--Brwn (lOYR 5/3) loam, dark brown (lOYR 4/3) mole t; few small faint pale brwn
<br />(lOYR 6/3) moist mottles; masei ve; hard, Erfab le, slightly sticky, sli gh [ly plastic;
<br />noncalca reous; neutral (pH 7.2).
<br />Type Location: Non[ezuma County, Colorado; app roxime[ely 10 feet south of [he southv eat corner
<br />of [he corral e[ the abandoned call road station oC Glencoe, Colorado; fn SN1/4 of sec, 21, 7. JIN.,
<br />R,11W.
<br />Range in Characteristics: Depth [o unlfo rmly talcs reous ma [e ri al normally ranges Erom 40 [o more
<br />than 60 inches and !s no[ eh allover than [he upper 7 inches of the C horizon Lf [he solum is thicker
<br />than 40 Sn dies: ThS ckness of the molllc epl Pedon end depth [o [he base of [he argillic horizon
<br />range from 17 [0 50 inches. She control section of some pedons has few faint mottles with ch coma
<br />of more Chan 2 in both met riz and mottling. Rack fragments range from 0 [o IS percent by volume
<br />in a major part of the solum and C ho rl zoo above 40 tnch es and these are ma Lnly 1/2 [0 30 loch es
<br />in diameter. These soils are moist Ln some part of [he mole tore control section more Chan 1/2
<br />the [1 me the soil temperature Ss 41'F. or higher or have dry value of less than 4.5 in the surface
<br />7 inches of the eallLc eplpedon but are dry Fn all parts of [he mots [u re control set [Son at some
<br />time !n most years. The A ho rl zoo has hue of SY Ch rough 7.SYR, value of 4 or 5 dry, 2 or J mots[,
<br />and ch coma of I through J. I[ ranges from ali gh [ly acid [o mildly alka ll ne (1:5 di lu [1 on unbuffered
<br />organic .dye), The B2[ ho rl xon has hue of SY [h rough 7, SYR, value of 4 through 7 dry, 2 through
<br />6 moist, and ch coma of 1 [h rough 4. I[ Ss typically loam or clay loam but clay ranges from 18
<br />to 75 percent, silt from 15 [0 55 percent and sand From 20 Co 60 percent vi [I, less Chan JS percent
<br />b sing Fine or coarse sand. This ho rl zoo ranges from sli gh [ly acid to mildly alkaline (1:5 dilution
<br />unbuffered organ lc dye). The C horizon has hue of SY through 7.SYR. It Ss typically loam or
<br />clay loam but clay ranges from 18 to 35 percent, silt 20 to 60 percent, and sand 20 to 60 percent.
<br />This hmcizon ranges from eli gh tly acid to mildly alkal lne (1:5 dal u[1on unbuffered dye).
<br />-72- •
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