LOCATION LANIGER CAEstablished Series
TAXONOMIC CLASS: Medial, mixed, thermic Typic Haploxerands
TYPICAL PEDON: Laniger fine sandy loam - rangeland. (Colors for dry conditions unless otherwise noted.)
A11--0 to 1 inch; dark grayish brown (10YR 4/2) fine sandy loam, very dark brown (10YR 2/2) moist; weak medium granular structure; nearly loose, very friable, nonsticky, nonplastic; contains much partly decomposed organic material and many very fine roots; very porous; medium acid; abrupt smooth boundary. (0 to 1 inch thick).
A12--1 to 9 inches; grayish brown (10YR 5/2) fine sandy loam, dark brown (10YR 3/3) moist; weak medium subangular blocky structure; slightly hard, friable, nonsticky and nonplastic; many very fine roots and very fine pores; medium to slightly acid; clear wavy boundary. (4 to 10 inches thick).
A3--9 to 16 inches; grayish brown (10YR 5/2) fine sandy loam, dark brown (10YR 3/3) moist; weak medium subangular blocky structure; slightly hard, friable, nonsticky and nonplastic; few very fine roots; common very fine pores; slightly acid; clear wavy boundary. (4 to 10 inches thick).
B2--16 to 38 inches; brown (10YR 5/3) fine sandy loam, dark yellowish brown (10YR 3/4) moist; weak medium subangular blocky structure; slightly hard, friable, nonsticky and nonplastic; porous; very few roots; slightly acid; abrupt very irregular boundary. (15 to 20 inches thick).
R--38 inches +; light colored, rhyolitic, lapilli tuff containing fragments of pumice; strongly consolidated.
TYPE LOCATION: Tehama County, California. About 4 miles northeast of Vina in the SE1/4 of the SW1/4 of the NW1/4, Sec. 32, T.25N., R.1W.
RANGE IN CHARACTERISTICS: Depth to bedrock ranges from about 23 to 48 inches and clay content increases slightly with depth. The soils have ochric epipedons, cambic horizons; are usually dry in all parts between 10 to 40 inches; and soil temperature is 59 degrees F. or greater. The A horizons range in color from grayish brown to dark grayish brown (10YR) dry, and very dark grayish brown to very dark brown moist; in texture from fine sandy loam to loam; and in thickness from 10 to 29 inches. The B2 horizons range in color from brown to grayish brown dry, to dark brown to dark yellowish brown moist; in texture from loam to sandy loam, in reaction from slightly to medium acid; and in thickness from 12 to 22 inches.
COMPETING SERIES: These include the Amador, Butte, Forward, Jiggs, Kidd, and Pentz series. The Amador soils have very pale, very strongly acid A horizons and bedrock occurs at 12 inches. Butte soils have light brownish gray gravelly loam A horizons and strongly acid argillic horizons. The Forward soils have light brownish gray, slightly and medium acid A horizons and very pale brown B2 horizons that are strongly acid in the lower part. The Jiggs soils have stony loam A horizons and strongly acid C horizons. The Kidd soils have pale brown gravelly sandy loam A horizons, strongly acid B2 horizons and bedrock occurs at 15 inches. The Pentz soils are slightly acid and have bedrock at 14 inches.
SETTING: The Laniger soils occur on gently to steeply sloping hills under grass-oak vegetation. Underlying bedrock is rhyolite or rhyolitic tuff. Elevations range from 500 to 2,000 feet and the climate is subhumid to sermiarid mesothermal with mean annual rainfall of 20 to 45 inches, with hot dry summers and cool moist winters. Mean annual temperature is about 60 degrees F., average January temperature about 46 degrees F., and average July temperature about 75 degrees F.
PRINCIPAL ASSOCIATED SOILS: Laniger soils occur in the same general area as Butte, Kidd, Newville, Santa Lucia and Tuscan soils.
DRAINAGE AND PERMEABILITY: Well to somewhat excessively drained, moderate to rapid permeability and medium to rapid runoff.
USE AND VEGETATION: Used for range and pasture. Natural vegetation is blue oaks, live oaks, manzanita, ceanothus, poison oak, brush and grasses.
DISTRIBUTION AND EXTENT: Along the margins of the northern Sacramento Valley on the tuffs of the Cascade Range and in coastal areas on tuffs. The soils are moderately extensive.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Davis, California
SERIES ESTABLISHED: Tehama County, California, 1962. Name from Laniger Lake.
REMARKS: The Laniger series was formerly classified in the Regosol group. The soils have ochric epipedons (< 1% OM) and cambic horizons.
OSED scanned by SSQA. Last revised by state on 7/66.