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earcillo aeries mildly alkaline; abrupt wavy <br />• boundary. <br />Depth class: Shallow <br />Drainage class: Well drained Bt3=13 to 16 inches; pale brown <br />Parent material: Colluvium, (lOYR 6/3) clay, brown (lOYR <br />residuum 5/3) moist; strong medium <br />Landform: Foothills angular blocky structure; <br />Landscape position: Ridgetops extremely hard, very firm, very <br />Slope: 3 to 15 percent sticky and very plastic; few <br />Average annual precipitation: 15 slickensides; thin patchy clay <br />to 18 inches films on faces of peds; strongly <br />Average annual air temperature: effervescent; moderately <br />45 to 50 degrees F alkaline; abrupt smooth <br /> boundary. <br />Taxonomic class: Clayey- <br />montmorillonitic, mesic Lithic R=16 to 60 inches; hard <br />Ustollic Haplargids fractured sandstone. <br />Typical Pedoa <br />Typical pedon of a Sarcillo loam Range in Characteristics <br />in an area of Louviers-Sarcillo- Thickness of the solum: 10 to 20 <br />Trag complex, 3 to 25 percent inches <br />slopes, about 1,100 feet south Depth to bedrock: 10 to 20 <br />and 2,500 feet west of the inches <br />northeast corner of sec. 27, T. Depth to carbonates: 10 to 20 <br />33 S., R. 65 W. inches <br /> Content of coarse fragments in <br />• A=0 to 5 inches; brown (7.5YR the control section: 0 to 20 <br />5/4) loam, dark brown (7.5YR percent <br />4/4) moist; weak fine granular <br />structure; slightly hard, very A horizon: <br />friable, slightly sticky and Reaction: neutral or mildly <br />nonplastic; neutral; clear alkaline <br />smooth boundary. <br />Btl=5 to 8 inches; light brown <br />(7.5YR 6/2) clay loam, dark <br />brown (7.5YR 4/2) moist; strong <br />fine subangular blocky <br />structure; hard, firm, sticky <br />and plastic; thin continuous <br />clay films on faces of peds; <br />mildly alkaline; abrupt smooth <br />boundary. <br />Bt2=8 to 13 inches; light brown <br />(7.5YR 6/4) clay, brown (7.5YR <br />5/4) moist; strong medium <br />prismatic structure parting to <br />moderate medium angular blocks; <br />extremely hard, very firm, <br />sticky and plastic; many <br />• slickensides; thin continuous <br />clay films on faces of peds; <br />B horizon: <br />Texture=clay loam or clay <br />Clay content: 35 to 50 percent <br />Reaction: mildly alkaline or <br />moderately alkaline <br />5-1-21 <br />