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• Setting: Satanka soils occur on gently to moderately sloping <br />uplands, slope is 3 to 10 percent. They are primarily residual <br />developing from underlying intertongued calcareous sandstone and <br />shale. <br />Type Location: 250 feet east, 150 feet south of the northwest <br />corner of Section 11, T8N, R78W. <br />Blackhall loamy fine sand, 3 to 10 percent slopes (5) <br />The Blackhall soil is a shallow calcareous soil found on <br />sloping to rolling ridgetops throughout the study area. Small <br />areas of rock outcrop and Manburn sandy loam were included in <br />mapping. <br />The Blackhall series is a member of the loamy, mixed (cal- <br />careous) frigid, shallow family of Ustic Torriorthents. Typically, <br />Blackhall soils have coarse-loamy A and C horizons in the study <br />• area. They have brown, very friable A horizons with granular <br />structure and yellowish brown C horizons with secondary carbonate <br />accumulations. <br />The Blackhall series are shallow soils developing residually <br />from calcareous sandstone along ridgetops and steep sideslopes. <br />They are well-drained with medium runoff and moderate permeability. <br />The surface textures range from loamy sand to fine sandy loam. <br />Subsoil texture is coarse loamy sand to sandy loam. <br />Typifying pedon, Blackhall loamy fine sand: <br />Al (0-2") - Brown (lOYR 5/3) loamy fine sand, dark brown (lOYR <br />4/3) moist; weak fine granular structure; soft, very <br />friable, nonsticky and nonplastic; common fine and very <br />fine roots; neutral (pH 7.0); clear smooth boundary. <br />• <br />-9- <br />