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10/13/2016 Official Series Description- MINNEQUA Series <br />LOCATION MINNEQUA CO+KS NE SD WY <br />Established Series <br />AJC/GB <br />03/2013 <br />MINNEQUA SERIES <br />The Minnequa series consists of moderately deep well drained soils that formed in slope alluvium and residuum <br />weathered from chalk, marl, limestone, and limy sedimentary bedrock. Minnequa soils are on hills, cuestas, <br />plains, interfluves, pediments, and ridges. Slopes range from 0 to 30 percent. The mean annual precipitation is <br />about 305 millimeters (12 inches) and the mean annual temperature is about 11 degrees C. (52 degrees F.) <br />TAXONOMIC CLASS: Fine -silty, mixed, superactive, mesic Ustic Haplocalcids <br />TYPICAL PEDON: Minnequa silt loam - grassland. (Colors are for dry soil unless otherwise noted.) <br />A --O to 15 centimeters (0 to 6 inches); grayish brown (IOYR 5/2) silt loam, brown (IOYR 4/3), moist; moderate <br />fine granular structure; soft, very friable, slightly sticky and slightly plastic; common fine and very fine roots; <br />strongly effervescent, 5 percent calcium carbonate equivalent; slightly alkaline (pH 7.8); clear smooth <br />boundary.. (8 to 18 centimeters (3 to 7 inches) thick) <br />Bw--15 to 43 centimeters (6 to 17 inches); light yellowish brown (IOYR 6/4) silt loam, yellowish brown (IOYR <br />5/4), moist; moderate medium subangular blocky structure; slightly hard, friable, slightly sticky and slightly <br />plastic; common fine and very fine roots; violently effervescent, 15 percent calcium carbonate equivalent; <br />moderately alkaline (pH 8.2); clear smooth boundary. (15 to 36 centimeters (6 to 14 inches) thick) <br />Bk --43 to 89 centimeters (17 to 35 inches); very pale brown (IOYR 7/3) silty clay loam, light yellowish brown <br />IOYR 6/4), moist; moderate medium subangular blocky structure; moderately hard, friable, slightly sticky, <br />slightly plastic; 8 percent medium distinct irregular carbonate masses in matrix; violently effervescent, 35 <br />percent calcium carbonate equivalent; moderately alkaline (pH 8.4); abrupt wavy boundary. (28 to 46 <br />centimeters (11 to 18 inches) thick) <br />Cr --89 to 150 centimeters (35 to 60 inches); Niobrara chalk, marl, shale and limy earth with discontinuous thin <br />layers of limestone. <br />TYPE LOCATION: Pueblo County, Colorado about 14 miles south of Nepesta, Colorado; about 2,450 feet <br />north and 50 feet west of the SE corner of sec. 2, T. 24 S., R. 61 W.; Yellowback Creek USGS Quad; UTM zone <br />13 571283 E, 4204812 N; latitude 37 degrees, 59 minutes, 17.4 seconds and longitude 104 degrees, 11 minutes, <br />17.6 seconds; NAD83. <br />RANGE IN CHARACTERISTICS: <br />Soil moisture: moist in some part March through May, moist intermittently June through October. <br />Moisture regime: aridic bordering on ustic. <br />Average annual soil temperature: 9 to 13 degrees C. (48 to 56 degrees F.) <br />Average summer soil temperature: 18 to 23 degrees C. (65 to 74 degrees F.) <br />Depth to uniformly calcareous material: 0 to 8 centimeters (0 to 3 inches) <br />Depth to visible segregated calcium carbonate: 23 to 51 cm (14 to 20 inches). <br />Depth to the paralithic contact: 50 to 100 centimeters (20 to 40 inches) <br />Gypsum content: 0 to 5 percent by weight. <br />httpsJ/soilseries-sc-egov.usda.gov/0SD—Docs/M/M INN EQUAhtml 1/3