LOCATION ROSEGLEN ND+SDEstablished Series
TAXONOMIC CLASS: Fine-loamy, mixed, superactive, frigid Pachic Haplustolls
TYPICAL PEDON: Roseglen silt loam - in a cultivated field. (Colors are for dry soil unless otherwise stated)
Ap--0 to 7 inches; dark grayish brown (10YR 4/2) silt loam, very dark grayish brown (10YR 3/2) moist; weak medium granular structure; soft, very friable, slightly sticky and slightly plastic; neutral; abrupt smooth boundary. (6 to 12 inches thick)
Bw1--7 to 14 inches; grayish brown (10YR 5/2) silt loam, very dark grayish brown (10YR 3/2) moist; moderate medium and fine prismatic structure parting to weak medium subangular blocky; slightly hard, friable, slightly sticky and slightly plastic; neutral; irregular wavy boundary.
Bw2--14 to 21 inches; brown (10YR 5/3) silt loam, very dark grayish brown (10YR 3/2) moist; moderate coarse and medium prismatic structure parting to weak medium angular blocky; slightly hard, friable, slightly sticky and slightly plastic; neutral; clear wavy boundary.
Bw3--21 to 24 inches; brown (10YR 4/3) silt loam, dark brown (10YR 3/3) moist; moderate coarse and medium prismatic structure parting to weak medium angular blocky; slightly hard, friable, slightly sticky and slightly plastic; slightly alkaline; gradual wavy boundary. (Combined Bw horizons 10 to 20 inches thick)
Bk--24 to 34 inches; pale brown (10YR 6/3) silt loam, brown (10YR 5/3) moist; weak coarse prismatic structure parting to weak medium angular blocky; hard, firm, sticky and plastic; many masses of carbonates; violent effervescence; moderately alkaline; gradual irregular boundary. (8 to 25 inches thick)
C1--34 to 53 inches; pale brown (10YR 6/3) silt loam, brown (10YR 5/3) moist; weak coarse prismatic structure; hard, firm, slightly sticky and slightly plastic; strong effervescence; slightly alkaline; abrupt irregular boundary.
C2--53 to 60 inches; laminated very pale brown (10YR 8/4) silt loam, dark grayish brown (10YR 4/2) moist; few large distinct light gray (10YR 7/1) and few medium prominent reddish yellow (7.5YR 6/8) mottles; massive; slightly hard, firm, slightly sticky and slightly plastic; many fine pores; few masses of carbonates; strong effervescence; slightly alkaline.
TYPE LOCATION: Burleigh County, North Dakota; 2525 feet east and 1990 feet north of the southwest corner, sec. 29, T. 139 N., R. 78 W.
RANGE IN CHARACTERISTICS: The mollic epipedon is 16 to 36 inches thick. Depth to carbonates ranges from 15 to 30 inches. A wide variety of textures and kinds of material are below depths of 40 inches.
The A horizon has hue of 10YR, value of 3 to 5 and 2 or 3 moist, and chroma of 2. It is silt loam or loam. It is neutral.
The Bw horizon has hue of 10YR, value of 3 to 5 and 3 moist, and chroma of 2 or 3. The Bw horizon has weak or moderate prismatic or blocky structure. It is silt loam or loam. It is neutral or slightly alkaline.
The Bk horizon has hue of 10YR or 2.5Y, value of 6 or 7 and 4 or 5 moist, and chroma of 1 to 3. It is silt loam or loam. It is slightly alkaline or moderately alkaline. Carbonates are disseminated and in few to many and fine to large masses or threads.
The C horizon has hue of 10YR or 2.5Y, value of 6 to 8 and 4 to 6 moist, and chroma of 1 to 4. It is silt loam or loam. Textures below a depth of 40 inches range from gravelly sand to clay. It is slightly alkaline or moderately alkaline.
COMPETING SERIES: These are the Arnegard, Bowery, Falkirk, Garlips, Shawa and Sheckle series. Arnegard and Shawa soils do not have a calcic horizon and formed in alluvium. Bowery and Sheckle soils have no carbonates and are medium acid to neutral. Falkirk soils have gravelly or sandy 2C horizons and formed in glaciofluvial deposits over till. Garlips soils are dry in all parts of the soil moisture control section in July.
GEOGRAPHIC SETTING: Roseglen soils are on level to gently rolling glacial lake plains. Slopes are plane or very slightly concave. Slope gradients are commonly less than 2 percent, but range to 9 percent. The soils formed in calcareous loamy glaciolacustrine sediments. Mean annual air temperature is 38 to 45 degrees F and mean annual precipitation is 13 to 18 inches.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Lehr, Makoti, Max, Parshall, Tansem and Williams soils. Lehr soils formed in loamy alluvium over sand and gravel glaciofluvial deposits. They are on higher positions on rims of lake plains and have a thinner mollic epipedon. Makoti soils are slightly lower on the landscape and are fine-silty. Max and Williams soils are on nearby glacial till plains and have a thinner mollic epipedon. Parshall soils are on beach areas and are coarse-loamy. Tansem soils are on slightly higher positions on the landscape and have a mollic epipedon less than 16 inches thick.
DRAINAGE AND PERMEABILITY: Well and moderately well drained. Slow runoff. Moderate permeability.
USE AND VEGETATION: Nearly all areas used for growing small grains, flax, hay and pasture. Native vegetation was mid and short prairie grasses, such as needlegrass, western wheatgrass, needleandthread and blue grama.
DISTRIBUTION AND EXTENT: Northwestern and west-central North Dakota and north-central South Dakota. The soil is moderately extensive.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: St. Paul, Minnesota
SERIES ESTABLISHED: McLean County, North Dakota, 1960.
REMARKS: Diagnostic horizons and features recognized in this pedon are: mollic epipedon - zone from the surface of the soil to a depth of 24 inches (Ap and Bw horizons).