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LOGAN COUNTY, COLORADO
<br />Dacono Series
<br />The Dacono aeries consists of deep, well drained soda
<br />farmed in calcareous alluvial and eolian materials under-
<br />lain by sand and gravel Dacono soils are on upland flats
<br />and ridges and have elopes of 0 to 5 percent. Average an-
<br />nual precipitation ranges from 17 to 19 inches and mean
<br />annual temperature is about 48 degrees F.
<br />The Datrono soils are similar to the Altvan and Platner
<br />sons. They aze neaz the Altvan, Platner and Rago soils.
<br />Altvan so11a have sandy clay loam B2t horizons. Platner
<br />and Rago ao17s lack sand and gravel at depths above 40
<br />inches.
<br />A typical pedon of Dacano loam is 2,490 feet north and
<br />15 feet west of the southeast corner of section 10, T.
<br />11N, R. 48W.
<br />Al-0 to 4 inches; grayish brows (IOYR 5/2) loam, very dark grayish
<br />brown (lOYR 3l2) moist; weak fine granular structure; slightly
<br />hard, friable; 6 percent gravel; neutral (pH 7.0); clear smooth boun-
<br />dary. (4 to 8 inches thick)
<br />Bl-4 to 7 inches; grayish brown (IOYR 5l2) clay loam, very dark gray-
<br />ish brown (lOYR 3/2) moist; weak medium prismatic etruMUre;
<br />hard, friable; 6 percent fine gravel; thin centinuoua clay films on
<br />faces of peds; aeutral (pH 7.0); clear smooth boundary. (3 to 6
<br />inches thick)
<br />B2t-7 to 13 inches; dark grayish brown (lOYR 4/2) heavy clay loam,
<br />very dark grayish brows (lOYR 3l2) moist; strong medium and fine
<br />prismatic parting to strong medium and fine aubangubu• blocky
<br />structure; hard, Ivm; moderately thick, nearly continuous clay films
<br />.; oa faces of peda; b percent gravel; mildly alkaline (pH 7.4); clear
<br />smooth boundary. (5 to 12 inches thick)
<br />B3-13 to 19 inehea; light gray (lOYR 7/2) silt loam, grayish brown
<br />(]OYR 6/2) moist; weak medium prismatic stricture; hard, friable;
<br />thin patchy clay Elms; mtldty alkaline (pH 7.4); clear smooch boun-
<br />dary. (3 to 8 inches thick)
<br />Clew-19 to 28 inches; white (lOYR 8/2) siR loam, light brownish gray
<br />(lOYR 6/2) moist; massive; hard, friable; calcareous with visible cal-
<br />cium carbonate occurring es concretions aid in thin seams and
<br />streaks; moderotey alkaline (pH 8.4); gradual smooth boundary. (5
<br />to 12 inches thick)
<br />IIC2-28 to a0 inches; light yelbwish brown (73YR 514) atratdied
<br />aarce sand and gravel, yellowish brown (7.5YR 5l4) moist; single
<br />grained; looce, dry and moist; mRdly alkaline (pH ?.5).
<br />Thickness of the solum ranges from 15 to 24 inches. Depth to the con-
<br />traeting IIC horizon ranges from 20 to 40 inehea Rock fragments range
<br />from 0 to lb percent in the eolum.
<br />The A horiaon has a color value of 4 ar 5 dry, 2 or 3 moist, and
<br />ehroma of 1 through a IC is a loam or light clay loam. The B2t horizon ie
<br />commonly heavy clay loam or tight clay. The IIC horizon has a hue of
<br />IOYR or 7SYR.
<br />Dailey Series
<br />The Dailey aeries consists of deep, somewhat excessive-
<br />ly drained so17s that formed in noncalcareous, eolian
<br />materials. Da17ey soils aze in upland valleys and on convex
<br />ridges and hills. Slopes are 0 to 9 percent. Average annual
<br />precipitation ranges from 15 to 19 inches and the mean
<br />annual temperature is about 48 degrees F.
<br />Daley soils are similar to the Valent sons. They are
<br />near the Valent, Julesb(ug and Haxtun sons. Valent soils
<br />lack dark surface layers extending to 10 inches or more.
<br />Julegburg and Haxtun soils have B2t horizons.
<br />115
<br />A typical pedon of Dailey loamy sand is located 375
<br />feet east and 10 feet north of the southwest corner of
<br />section 21, T.9N, R.48W.
<br />Al-0 to 16 inches; grayish brown (IOYR 5/2) loamy sand, very dark
<br />grayish brown (IOYR 8l2) moist; weak fine granular structure; soft,
<br />very friable; neutral (pH 5.3); gradual wavy boundary. (!0 to 20
<br />inches chick)
<br />C-15 to 60 inches; pale brown (lOYR Gh3) loamy sand, brown (IOYR
<br />6l3) moist; angle grained; loose, dry and moist; neutral (pH 7.0).
<br />The mollic epipedon ranges from IO to 20 inches [kick. ]t is nancal-
<br />careova to a depth of 40 inches or more.
<br />The A horizon has a cebr value of 4 or 5 dry, 2 or 8 moist, and
<br />chrome of 2 or 3. The C horizon is commanty a loamy sand but ranges to
<br />a sand.
<br />The thick surface phase mapped in this survey m a faradjunM to the
<br />Dailey aeries. The moRic epipedon is thicker than 20 inches The under-
<br />lying layers mnsiat of buried A and B2 horizons and are loamy sand and
<br />Bandy loam.
<br />Dix Series
<br />The Dix series consists of deep, somewhat excessively
<br />drained soils formed in very gravelly alluvia] sediments
<br />with a thin mantle of loamy alluvium. Dix soils are on
<br />upland ridges and knolls with slopes of 3 to 25 percent.
<br />Average annual precipitation ranges from 15 to 19 inches
<br />and mean annual temperature is about 48 degrees F.
<br />The Dix soils are similaz to the Peetz and Eckley sons.
<br />They are neaz the Peetz, Eckley and Chappell soils. Peetz
<br />sails are calcareous throughout. Eckley soils have B2t
<br />horizons. Chappell soils have sand and gravel at depths of
<br />20 to 40 inches.
<br />A typical pedon of Dix gravelly sandy loam is located
<br />900 feet south and 600 feet east of west quarter comer of
<br />section 29, T.11N., R.52W.
<br />Al-0 to 4 inches; dark gnyiah brown (lOYR 4/2) gravelty sandy loam,
<br />very dark brown (IOYR 2/2) moist; weak fine granular structure;
<br />slightly hard, very triable; 30 percent gravel and rnhblea; neutral
<br />(pH 7.0); clear smooth boundary. (3 to 5 inches thick)
<br />B2-4 to 10 inches; dark grayish brown (lOYR 412) gravelly costae
<br />sandy kum, very dark grayish brown (lOYA 3I2) moist; weak medi-
<br />um prismatic atroeture; hard, very friable; thin patchy clay films an
<br />faces of pede and in root channels; neutral (pH 7.0); clear smooth
<br />boundary. (3 to 9 inches thick)
<br />B3-10 is 18 nchee; brown (73YR 5/4) gravelly kmmy coarse sand, dark
<br />brown (7SYR 4!4) moist; weak medium prismatic parting to weak
<br />medium eubangular bk>rky structure; hard, friable; few thin patchy
<br />clay 8hns on faces of peds; 40 percent fine gravel; neutral (pH 7.0);
<br />gradual smooth boundary. (2 to 8 inches thick)
<br />C1-18 to 60 inches; reddish yelbw (7SYR 6/6) very gravelly sand,
<br />brown (7SYR 5/4) moist; massive; elighUy hard, very friable;
<br />neutral (pH 72).
<br />Thickness of the meRie epipedon ranges from 7 to 15 inches.
<br />Thickness of Lhe eolim ranges from a to ZO inches. Commonly these
<br />soils are noncalcettwua in the area of the reddish Ogallala parent materi-
<br />akG In areas of more recent outwash deposits they have calcareous
<br />materials at 12 to 24 inches.
<br />The A horizon has a celar value of 4 ar 5 dry, 3 or 4 moist, and
<br />chrome of 2 or 3. IC is gravelly sandy loam or graveay loam.
<br />Eckley Series
<br />The Eckley series consists of deep, well drained soils
<br />formed in stratified, reddish colored, gravelly alluvial
<br />
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