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Official Series Description -MINQWET Series LOCATION MINQWET CO • r1 ~J Tentative Series LAN 06/2002 MINQWET SERIES Buffalo Stone Quarry Page s Attachment 5 The Mingwet series consists of moderately deep, well drained soils that formed in loess and residuum derived from calcareous shale and limestone. Mingwet soils aze on hills, ridges and pediments in the plains."Slopes range from 1 to 10 percent. Mean annual precipitation is about 15 inches and the mean annual temperature is about 52 degrees F. , TAXONOMIC CLASS: Fine-silty, mixed, superactive, mesic Aridic Haplustepts TYPICAL PEDON: Mingwet silt loam, on a east facing, 3 percent slope in grass at an elevation of 5,344 feet. (Colors aze for dry soil unless otherwise noted.) When described on October 11, 2001 the soil was dry from 0 to 30 inches. A--O to 6 inches; brown (1 OYR 5/3) silt loam, brown (1 OYR 4/3) moist; moderate fine and medium granular structure; slightly hard, friable, slightly sticky and slightly plastic; many very fine and fine roots; 22 percent calcium cazbonate equivalent; strongly effervescent; moderately alkaline (pH 8.2); cleaz smooth boundary. (4 to 7 inches thick) Bwl--6 to 14 inches; light brownish gray (lOYR 6/2) silty clay loam, brown (IOYR 4/3) moist; moderate fine and medium subangular blocky structure; hard, friable, slightly sticky and slightly plastic; common very fine and fine roots; 28 percent calcium carbonate equivalent; violently effervescent; moderately alkaline (pH 8.4); clear smooth boundary. Bw2--14 to 21 inches; very pale brown (lOYR 7/3) silty clay loam, yellowish brown (lOYR 5/4) moist; moderate fine and medium subangular blocky structure; few very fine and fine roots; 32 percent calcium carbonate equivalent; violently effervescent; moderately alkaline (pH 8.4); clear smooth boundary. (Combined thickness of the Bw horizons is 12 to 21 inches) Bky--21 to 30 inches; very pale brown (lOYR 7/3) silty clay loam, yellowish brown (lOYR 5/4) moist; weak fine and medium subangulaz blocky structure; few very fine and fine roots; 5 percent shale pazafragments; few medium soft masses of calcium carbonate; few fine and medium soft masses of gypsum; 38 percent calcium carbonate equivalent; violently effervescent; moderately alkaline (pH 8.4); clear irregular boundary. (4 to 12 inches thick) Cr--30 to 60 inches; soft shale and limestone; 48 pen;ent calcium carbonate equivalent. TYPE LOCATION: Las Animas County, Colorado; about 10 miles north of Andrix; located about 400 feet south and 1,900 feet east of the southwest comer of sec. 3, T. 31 S., R. 52 W.; Buck Canyon USGS quad; lat. 37 degrees 22 minutes 47 seconds N. and long. 103 degrees 14 minutes 19 seconds W., NAD 1927 RANGE IN CHARACTERISTICS: http://www2.ftw.nres.usda.gov/osd/dat/M/MINQWET.html 6/28/2007