LOCATION LANGOLA MNEstablished Series
TAXONOMIC CLASS: Coarse-loamy, mixed, superactive, frigid Oxyaquic Argiudolls
TYPICAL PEDON: Langola loamy fine sand on a slope of 2 percent in a cultivated field. (Colors are for moist soil unless otherwise stated.)
Ap--0 to 9 inches; black (10YR 2/1) loamy fine sand, dark grayish brown (10YR 4/2 ) dry; weak fine subangular blocky structure; very friable; moderately acid; abrupt smooth boundary. (6 to 10 inches thick)
A--9 to 12 inches; very dark grayish brown (10YR 3/2) loamy fine sand, dark grayish brown (10YR 4/2) dry; weak medium subangular blocky structure; very friable; slightly acid; clear wavy boundary. (0 to 6 inches thick)
AB--12 to 15 inches; dark brown (10YR 3/3) loamy fine sand; grayish brown (10YR 5/2) dry; weak medium subangular blocky structure; very friable; slightly acid; clear wavy boundary. (0 to 6 inches thick)
Bw--15 to 31 inches; brown (10YR 5/3) loamy sand; single grain; loose; common fine distinct yellowish brown (10YR 5/6) Fe concentrations; slightly acid; clear wavy boundary. (3 to 22 inches thick)
2Bt--31 to 39 inches; brown (7.5YR 4/4) sandy loam; weak medium subangular blocky structure; firm; few distinct dark brown (7.5YR 3/2) clay films on faces of peds and pores; common medium distinct strong brown (7.5YR 5/6) Fe concentrations and common fine distinct brown (7.5YR 5/2) Fe depletions; about 10 percent gravel; slightly acid; clear wavy boundary. (3 to 12 inches thick)
2BC--39 to 43 inches; brown (7.5YR 4/4) sandy loam; few fine distinct strong brown (7.5YR 5/6) Fe concentrations and few fine distinct brown (7.5YR 5/2) Fe depletions; weak medium subangular blocky structure; firm; about 8 percent gravel; slightly acid; gradual wavy boundary. (3 to 15 inches thick)
2BCd--43 to 60 inches; brown (7.5YR 4/4) sandy loam; very coarse prismatic structure parting to moderate fine and medium platy; obilique fragments dissected by a few 2 to 3 millimeter vertical fractures 0.5 to 3.0 feet apart; very firm; about 8 percent gravel; slightly acid.
TYPE LOCATION: Benton County, Minnesota; about 5 miles northeast of Rice; 2,300 feet north and 1500 feet east of the southwest corner of Sec. 12, T. 38 N., R. 31 W.
RANGE IN CHARACTERISTICS: The thickness of the sandy mantle ranges from 20 to 40 inches. The depth to free carbonates is greater than 60 inches. Depth to a densic contact ranges from 40 to 60 inches. The mollic epipedon is 10 to 20 inches thick. The sandy mantle does not have rock fragments. Some pedons have a coarse textured layer, up to 6 inches thick, with 10 to 35 percent gravel and cobbles at the contact with the glacial till (lag line). Volume of rock fragments in the 2B horizon and 2C horizon ranges from 1 to 15 percent. The rock fragments are of mixed lithology but mostly of igneous rock.
The Ap or A horizon has hue of 10YR, value of 2 or 3 and chroma of 1 or 2. The AB horizon has hue of 10YR, value of 3 and chroma of 2 or 3. The A horizons are loamy fine sand, loamy sand, fine sand or sand. Reaction ranges from strongly acid to slightly acid.
The Bw horizon has hue of 10YR with hue of 7.5YR in the lower part of some pedons, value of 4 or 5, and chroma of 3 or 4. Redox features are faint to prominent. It is loamy fine sand, loamy sand, fine sand or sand. Reaction is strongly acid to slightly acid.
The 2Bt horizon has hue of 7.5YR, value of 3 to 5, and chroma of 3 or 4. Some pedons have hue of 10YR in the 2Bt horizon. It is fine sandy loam or sandy loam. The reaction is strongly acid to slightly acid. Redox features are faint to prominent
The 2BC horizon has hue of 7.5YR or less commonly 5YR, value of 3 to 5, and chroma of 3 or 4. It is sandy loam or fine sandy loam. Reaction is moderately acid to neutral. Bulk density ranges from 1.65 to 1.95 gm/cc.
The 2BCd horizon has hue of 7.5YR or less commonly 5YR, value of 3 to 5, and chroma of 3 or 4. It is sandy loam or fine sandy loam. Reaction is moderately acid to neutral. Bulk density ranges from 1.8 5to 2.0 gm/cc. This is considered to be a densic contact.
COMPETING SERIES: These are the Clitherall, linveldt and Oylen series. All of these soils lack a densic contact within the series control section.
GEOGRAPHIC SETTING: These soils are on plane to convex slopes on crests and backslopes of drumlins and moraines. Slopes range from 0 to 6 percent. They formed in a sandy mantle either of eolian or outwash origin or both, over Superior Lobe dense loamy glacial till of Late Wisconsinan Age. Mean annual air temperature is 37 to 45 degrees F. Mean annual precipitation is 24 to 33 inches. Frost-free days range from 90 to 145. Elevation above sea level ranges from 670 to 1450 feet.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Kost, Milaca, Mora, Nokasippi, Ronneby and Watab soils. The Mora, Milaca and Ronneby soils do not have the sandy mantle. The excessively drained Kost soils formed entirely in outwash sediments. The very poorly drained Nokasippi and poorly drained Watab soils occupy lower positions on the landscape.
DRAINAGE AND PERMEABILITY: Moderately well drained. Surface runoff is low. Permeability is rapid in the sandy mantle and very slow in the dense till. This soil has a perched seasonal high saturation at a depth of 1.5 foot during April to May in years of normal precipitation.
USE AND VEGETATION: Most of the soil is cropped to corn, soybeans, small grains, and hay. Native vegetation is mixed tall prairie grasses and oak savana forest.
DISTRIBUTION AND EXTENT: MLRA-91, mostly in Central Minnesota. Small extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: St. Paul, Minnesota
SERIES ESTABLISHED: Hennepin County, Minnesota, 1969.
REMARKS: Diagnostic horizons and features recognized in this pedon are: mollic epipedon - the zone from the surface of the soil to a depth of 15 inches (Ap A and AB horizons); argillic horizon - the zone from 31 to 39 inches; ( 2Bt horizon); oxyaquic subgroup - saturation above depths of 40 inches; densic contact-the zone beginning at 43 inches.
ADDITIONAL DATA: Refer to MAES Central File Code No. 767 for results of laboratory data on a similar pedon.