LOCATION CAMPONE CAInactive Series
TAXONOMIC CLASS: Loamy-skeletal, mixed, superactive Aquic Cumulic Haplocryolls
TYPICAL PEDON: Campone gravelly loam - semi-wet meadow. (Colors are for dry soil unless otherwise noted).
A11--0 to 3 inches; very dark grayish brown (10YR 3/2) gravelly loam, very dark brown (10YR 2/2) moist; moderate very fine granular structure; soft, very friable, nonsticky, nonplastic; many very fine roots; many very fine interstitial pores; slightly acid (ph 6.4); clear smooth boundary. (1 to 4 inches thick)
A12--3 to 12 inches; dark grayish brown (10YR 4/2) gravelly loam, very dark brown (10YR 2/2) moist; moderate fine and medium granular structure; soft, very friable, slightly sticky, slightly plastic; many fine and common fine and medium roots; many very fine and fine interstitial pores; moderately acid (pH 6.0); gradual smooth boundary. (6 to 10 inches thick)
A13--12 to 38 inches; dark grayish brown (10YR 4/2) stony loam, very dark brown (10YR 2/2) moist; moderate fine and medium subangular blocky structure; slightly hard, friable, slightly sticky, slightly plastic; common very fine and fine, and few medium roots; many very fine, and few fine tubular pores; moderately acid (pH 6.0); clear irregular boundary. (10 to 20 inches thick)
C1--38 to 40 inches; light brownish gray (10YR 6/2) very gravelly sandy clay loam, brown (10YR 4/3) moist; few fine distinct strong brown (7.5YR 5/6) and reddish yellow (7.5YR 6/6) iron mottles and stains; massive; hard, friable, sticky, plastic; common very fine, and few fine roots; many very fine and fine tubular pores; moderately acid (pH 5.6).
TYPE LOCATION: Lassen County, California; 100 feet east of Skunkcabbage Creek about 100 feet east and 600 feet south of the N1/4 corner of sec. 22, T. 38 N., R. 16 E., Mount Diablo base line and meridian.
RANGE IN CHARACTERISTICS: The mean annual soil temperature ranges from 37 to 42 degrees F, and the mean summer soil temperature ranges from 53 to 59 degrees F. The climate is cold continental. These soils are usually saturated within a depth of 40 inches at least one month or more during most years, mainly during the spring runoff period. The control section is stratified and contains strata of loam, sandy clay loam, fine sandy loam or sandy loam, and gravel, cobbles or stones. When the control section is mixed, the rock fragment content ranges from 35 to 60 percent and is predominantly loam containing more than 18 percent clay. The soils are slightly to medium acid. The mollic epipedon ranges from 16 to 30 inches thick.
The Campone soils have dark grayish brown A1 horizons more than 16 inches thick. The soils are slightly acid in the surface. The A1 horizon has value of 3 through 5 dry and 2 or 3 moist, and chroma of 1 through 3. Dry value of 5 and moist value of 3 and chroma of 3 occur only in the lower part. In some pedons, faint iron mottles occur in the lower part. This horizon has weak to strong, very fine to medium, granular or subangular blocky structure. The weaker structure occurs only in the lower part.
This soils has mottled light brownish gray medium acid C horizons. The C horizon has hue of 10YR or 2.5Y value of 5 or 6 dry and 3 or 4 moist, and chroma of 2 or 3. It has high chroma iron mottles in hue of 5YR through 10YR and chroma of 4 through 8.
COMPETING SERIES: These are the Behanin, Blanca, Caballo, Croesus, Dateman, Hobacker, and Nevtah series. Behanin soils have an A1 horizon. Blanca soils have less than 18 percent clay in the texture control section. Caballo soils are well drained, lack mottles, and are not saturated within a depth of 40 inches for any period. Croesus, Dateman, and Nevtah soils have a lithic or paralithic contact at depths of 20 to 40 inches. Hobacker soils are calcareous below a depth of 6 to 20 inches.
GEOGRAPHIC SETTING: Campone soils occur in convex, nearly level to strongly sloping narrow mountainous valleys at elevations of 6,500 to 8.000. Slope gradients are 0 to 15 percent. The soils formed in gravelly, cobbly or stony alluvium derived from basalt, andesite, and tuff. The climate is cold continental. Mean annual precipitation is about 24 to 30 inches coming mostly as snow. The mean annual temperature is about 39 degrees F, mean January temperature about 20 degrees F, and mean July temperature about 56 degrees F.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Longval, Lyonman, and Windy soils. Longval soils have coarse-loamy control sections and umbric epipedons. Lyonman soils have ochric epipedons and fine-loamy control sections. Windy soils have umbric epipedons and cindery mineralogy.
DRAINAGE AND PERMEABILITY: Somewhat poorly drained; slow runoff; moderate permeability. Drained phases are recognized where degradation of the creek channels has effectively lowered the water table to depths below 4 feet. Normally the water table stands at depths ranging from 36 to 60 inches.
USE AND VEGETATION: The soils are used to provide grazing for livestock and wildlife. The dominant vegetation is grasses, sedges, and forbs together with open stands of aspen or lodgepole pine. Vegetation on drained areas is mainly balsamroot, meadow grasses, and sedges with some big sagebrush invading.
DISTRIBUTION AND EXTENT: Small valleys in the Warner Mountains of northeastern California. The soils are of limited extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Davis, California
SERIES ESTABLISHED: Lassen County, California, 1971.
REMARKS:
This series was inactivated as a result of the update and recorrelation of the Soil Survey of Surprise Valley-Home Camp Area, California and Nevada in 2006.
The revision of May 2001 updated the taxonomic class from Loamy-skeletal, mixed Pachic Cryoborolls.
Last revised by the state on 6/72.