LOCATION KASEBERG CAEstablished Series
TAXONOMIC CLASS: Loamy, mixed, superactive, thermic, shallow Typic Durixerepts
TYPICAL PEDON: Kaseberg loam - on an east facing slope of 2 percent under annual grasses at 120 feet elevation. (Colors are for dry soil unless otherwise stated).
Ap--0 to 6 inches; light brownish gray (10YR 6/2) loam, dark brown (10YR 4/3) moist; few fine distinct yellowish brown (10YR 5/6) mottles; massive; hard, friable, slightly sticky and slightly plastic; common very fine roots; common very fine tubular pores; moderately acid (pH 6.0); abrupt smooth boundary. (3 to 8 inches thick).
Bw--6 to 14 inches; pale brown (10YR 6/3) loam, dark brown (10YR 3/3) moist; weak medium subangular blocky structure; hard, friable, slightly sticky and slightly plastic; common very fine roots; common very fine, fine tubular and interstitial pores; slightly acid (pH 6.5); abrupt wavy boundary. (5 to 8 inches thick).
C--14 to 16 inches; light gray (2.5Y 7/2) silt loam, light olive (2.5Y 5/4) moist; common fine distinct yellowish brown (10YR 5/8) mottles; massive; very hard, extremely firm, slightly sticky and slightly plastic; common very fine tubular pores; slightly acid (pH 6.3); abrupt wavy boundary. (0 to 4 inches thick).
Cqm-- 16 to 16 1/4 inches; continuous silica-cemented hardpan. (1/4 to 3 inches thick).
Cr--16 1/4 to 20 inches; light gray (10YR 7/2) soft siltstone.
TYPE LOCATION: Placer County, California; about 3.5 miles southwest of the town of Lincoln; 2,200 feet west and 70 feet N of the southeast corner of sec. 33, T 12 N, R6E. Roseville Quadrangle.
RANGE IN CHARACTERISTICS: Depth to a duripan capping the bedrock is 10 to 20 inches. A paralithic contact immediately underlies the duripan. The mean annual soil temperature is about 62 degrees F, and the soil temperature is not below 47 degrees at any time. The soil below the depth of 7 inches is dry in all parts from June to Oct 15 and is moist in all parts from November to May. Soil textures are fine sandy loam, loam, or silt loam with less than 3 percent clay increase anywhere in the profile. Reaction is moderately acid to neutral throughout the profile.
The A horizon is 2.5Y 6/2; 10YR 6/2, 6/3, 6/4, 7/2, 7/3; 7.5YR 4/4, 5/2, 5/4. Moist colors are 2.5Y 4/2; 10YR 3/3, 4/3, 4/4, 5/3; 7.5YR 3/4, 4/4.
The Bw horizon is 7.5YR 5/4, 6/2, 6/4; 10YR 5/3, 5/4, 6/3, 6/4, 7/4. Moist colors are 7.5YR 3/4, 4/4; 10YR 4/3, 3/3, 3/4, 4/4.
The C horizon is 2.5Y 7/2, 6/2. Moist colors are 2.5Y 5/4, 4/4. Some pedons do not have a C horizon.
The Cqm or Bqm horizon is composed of 1 or more colors. Dry color is 10YR 5/4, 6/4, 7/2, 7/4, 7/6; 7.5YR 7/4 or 6/6 and moist color is 2.5Y 5/2, 5/4, 7/2; 10YR 4/4, 5/6; 7.5YR 4/4 or 5/6.
The Cr is 10YR 6/4, 7/2, 7/3, 7/4; 2.5Y 6/2, 6/4. Moist colors are 10YR 4/2, 4/3, 5/4; 2.5Y 4/2, 4/4, 5/2.
COMPETING SERIES: There are no other soils in this family.
GEOGRAPHIC SETTING: The Kaseberg soils are on low-lying terraces and hill slopes of dissected terraces and have slopes of 0 to 30 percent. The soils formed in material weathered from consolidated sandstone and siltstone of the Fair Oaks or Laguna Formations. Some strata of volcanic glass are present. Elevations are 75 to 270 feet. The climate is subhumid with hot, dry summers and cool, moist winters. Mean annual precipitation is 16 to 22 inches. Mean annual temperature is about 62 degrees F; average January temperature is 45 degrees F, average July temperature is 81 degrees F. The frost-free season ranges from 250 to 300 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Alamo, Cometa, Fiddyment and San Joaquin soils. Alamo soils have fine texture throughout and are in basins or drainageways. Cometa soils have an argillic horizon and lack a duripan. Fiddyment have an argillic horizon and a duripan between 20 to 37 inches. San Joaquin soils have an argillic horizon, a hardpan at 20 to 40 inches, lack siltstone below the hardpan and are on low terraces; Cometa and Fiddyment soils are on similar landscape positions.
DRAINAGE AND PERMEABILITY: Well drained; slow or medium runoff; moderate permeability.
USE AND VEGETATION: Used for dryland grain, dryland pasture or rangeland. The natural vegetation is soft chess, wild oats and filaree.
DISTRIBUTION AND EXTENT: Low terraces on the east side of the Sacramento and San Joaquin Valleys. The soils are of small extent in MLRA-17.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Davis, California
SERIES ESTABLISHED: Placer County (Western part), California, 1975.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon - the zone from the surface to a depth of 6 inches (Ap).
Cambic horizon - the zone from 6 to 14 inches (Bw).
Duripan - the zone from 16 to 16 1/4 inches (Cqm) is continuously indurated at upper boundary.
Paralithic contact - the zone at 16 1/4 inches (Cr), fragments break down when placed in water.
ADDITIONAL DATA: Riverside Laboratory Sample No. S69Calif-31-11