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Utt~cial Jenesllescnpuon-M1llwAY genes <br />Chroma: 2 to 4 <br />Texture: silty clay loam, silty clay, clay loam or clay <br />Clay content: 35 to 45 percent <br />Silt content: 20 to 50 percent silt <br />Sand content: less than 10 percent sand coarser than very fine sand <br />Reaction: slightly alkaline to strongly alkaline <br />rage ~ or s <br />COMPETING SERIES: These are the Cannonville, Danko, Orella, Samdav and Zyme series. <br />Cannonville and Zyme soils: have moisture control sections that are dry for 15 consecutive days from <br />Mav I S to July I S when the soil temperature at 20 inches is greater than 41 degrees F. <br />Danko soils: have hue of 7.SYR or redder. <br />Orella soils have 38 to 65 percent clay in the particle-size control section. <br />Samday soils are dry for 90 cumulative days or 60 consecutive days from July 15 to October 25. <br />GEOGRAPHIC SETTING: <br />Landform: crests of ridges, mesas, plains and hills in shale bedrock uplands. <br />Slopes: 0 to 40 percent <br />Parent material: slope alluvium and residuum from calcazeous platy shale high in smectitic type clay <br />Mean annual precipitation: 10 to 16 inches, about 13 inches at the type location. <br />Mean annual air temperature is 45 to 53 degrees F. <br />Frost free period: 100 to 160 days. <br />GEOGRAPHICALLY ASSOCIATED SOILS: These are the Gavnor, Shingle and Renohill soils. <br />Gaynor soils have a paralithic contact above 40 inches. <br />Shingle soils have less clay in their particle-size control section. <br />Renohill soils have an argillic horizon, and a pazalithic contact at depths of 20 to 40 inches. <br />DRAINAGE AND PERMEABILITY: Well drained. Runoff is low to very high depending on slope. <br />Permeability is very slow or slow. <br />USE AND VEGETATION: Principally native range with associations of short grasses or forbs, prairie <br />junegrass, silver sage, threadleaf sage, western wheatgrass and rabbitbrush. <br />DISTRIBUTION AND EXTENT: Colorado, Wyoming, Montana, South Dakota, North Dakota, <br />Kansas. LRR E, G, and H; MLRA 49, 67, 69, 72. The series is of moderate extent. <br />MLRA OFFICE RESPONSIBLE: Salina, Kansas <br />SERIES ESTABLISHED: Central Montana Reconnaissance, Montana, 1943. <br />REMARKS: Diagnostic horizons and features recognized in this pedon include: <br />Ochric epipedon: the zone from 0 to 3 inches. (A horizon) <br />Paralithic contact - at 12 inches (top of the Cr horizon). <br />Differentia with the Orella series needs to be better defined. <br />Series updated from 7/87 to 2/94 for use on the Kit Carson County, Colorado, final correlation. CJH <br />Geographic Setting: Revised MAP to 13 inches at the type location and ranged the MAP from 8 to 14 <br />inches. CJH <br />Added, "Diagnostic features include a pazalithic contact at 12 inches. Last updated by the state 2/94. <br />http://ortho.ftw.nres.usda.gov/cgi-bin/osd/osdname.cgi?-P 4/29/2004 <br />