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VJllllil711 JCl lGS LCSI%1lt/LLUII - 1V1~V r,L JCI1C5 <br />LOCATION MANVEL CO+KS NE SD <br />Established Series <br />Rev. GB <br />02/97 <br />MANVEL SERIES <br />Ya$C 1 OI G <br />• <br />The Manvel series consists of very deep, well drained, moderately permeable soils that formed in thick <br />very calcareous alluvial fan materials derived from chalk and soft limestone. Manvel soils are on alluvial <br />fans and footslopes and have slopes of 0 to 15 percent. The mean annual precipitation is about 14 inches <br />and the mean annual temperature is about 54 degrees F. <br />TAXONOMIC CLASS: Fine-silty, mixed, calcareous, mesic Ustic Torriorthents <br />TYPICAL PEDON: Manvel silt loam, grassland. (Colors are for dry soil unless otherwise noted). <br />A-0 to 4 inches; light brownish gray (lOYR 6/2) silt loam, dark grayish brown (lOYR 4/2) moist; <br />moderate very fine granular structure; slightly hard, very friable; strongly effervescent; moderately <br />alkaline; clear smooth boundary. (3 to 5 inches thick) <br />AC-4 to 12 inches; pale brown (lOYR 6/3) silt loam, brown (lOYR 513) moist; weak medium <br />subangular blocky structure; hard, friable; about 20 percent calcium carbonate equivalent; violently <br />effervescent; moderately alkaline; gradual smooth boundary. (0 to 10 inches thick) <br />C-12 to 60 inches; pale brown (lOYR 6/3) silt loam, brown (lOYR 5/3) moist; massive; hard, friable; <br />about 20 percent calcium carbonate equivalent; violently effervescent; moderately alkaline. <br />TYPE LOCATION: Las Animas County, Colorado; 1,850 feet east and 25 feet south of the NW comer <br />sec. 24, T. 30N., R. 62 W. <br />RANGE IN CHARACTERISTICS: Mean annual soil temperature ranges from 54 to 59 degrees F., <br />and mean summer soil temperatwe ranges from 67 to 76 degrees F. Typically, these soils are calcazeous <br />at the surface but are leached for 2 to 4 inches in some pedons. They lack continuous subhorizons of <br />secondary calcium carbonate accumulation above a depth of 40 inches, but some discontinuous <br />carbonate accumulation occurs at any depth in some pedons. Calcium carbonate equivalent ranges from <br />15 to 40 percent and is usually more than 20 percent in most horizons within the control section. The <br />electrical conductivity ranges up to 10 mmhos in some pedons. The particle size control section usually <br />averages silt loam, loam, or silty clay loam but clay ranges from 18 to 35 percent, silt from 40 to 70 <br />percent, and sand from 5 to 35 percent with less than 15 percent fine or coarser sand. Rock fragments <br />range from 0 to 10 percent, but are typically less than 2 percent, consisting mostly of limestone <br />fragments less than 6 inches along the longer axis. Mean annual soil temperature ranges from 47 to 58 <br />degrees F., and mean summer soils temperature ranges from 58 to 80 degrees F. The soil moisture <br />control section is moist in some part in April through parts of June. <br />The A horizon has hue of SY through 7.SYR, value of 5 through 7, 3 through 6 moist, and chroma of 2 <br />through 4. It usually has granular structwe but has subangulaz blocky structure in some pedons. This <br />horizon is soft or slightly hard. It ranges from pH 8.0 to pH 8.6. <br />http://www.statlab.iastate.edulsoils/osd/daUT~1/MANVEL.html 6/25!02 <br />