LOCATION WENGLER CAEstablished Series
TAXONOMIC CLASS: Medial-skeletal, mixed, frigid Typic Haploxerands
TYPICAL PEDON: Wengler very gravelly coarse sandy loam on a northeast facing 5 percent slope under a cover of mixed conifers and greenleaf manzanita at an elevation of 4920 feet. (Colors are for dry soil unless, otherwise stated. When described August 11, 1988, the soil was dry throughout.)
A--0 to 4 inches; brown (10YR 5/3) very gravelly coarse sandy loam; dark brown (7.5YR 3/2) moist; weak very fine subangular blocky structure; soft, very friable, nonsticky and nonplastic; many very fine, and common fine and medium roots; many very fine interstitial pores; 40 percent vesicular basalt gravel; slightly acid (pH 6.5); abrupt smooth boundary. (3 to 6 inches thick)
Bw1--4 to 12 inches; brown (7.5YR 5/4) very gravelly coarse sandy loam; brown to dark brown (7.5YR 4/4) moist; weak very fine subangular blocky structure; soft, very friable, nonsticky and nonplastic; many very fine, common fine, and few medium and coarse roots; many very fine interstitial pores; slightly acid (pH 6.5); 45 percent vesicular basalt gravel; slightly acid (pH 6.5); clear smooth boundary. (7 to 10 inches thick)
2Bw2--12 to 17 inches; light brown (7.5YR 6/4) very gravelly coarse sandy loam; brown (7.5YR 4/4) moist; weak very fine subangular blocky structure; soft, very friable, nonsticky and nonplastic; many very fine, common fine, and few medium and coarse roots; many very fine interstitial pores; 50 percent vesicular basalt gravel with secondary silica pendants on undersides; slightly acid (pH 6.5); clear wavy boundary.
2Bw3--17 to 25 inches; light brown (7.5YR 6/4) extremely gravelly loamy coarse sand; brown to dark brown (7.5YR 4/4) moist; weak very fine subangular blocky structure; soft, very friable, nonsticky and nonplastic; many very fine, common fine, and few medium and coarse roots; many very fine interstitial pores; 60 percent vesicular basalt gravel with secondary silica pendants on undersides, 10 percent cobbles; slightly acid (pH 6.5); clear wavy boundary. (Combined thickness of the Bw horizon is 12 to 16 inches)
3C1--25 to 47 inches; yellowish brown (10YR 5/4) extremely gravelly sand; dark yellowish brown (10YR 4/4) moist; single grain; loose, nonsticky and nonplastic; many very fine, common fine, medium and coarse roots; many very fine interstitial pores; 60 percent vesicular basalt and some cinder gravel, 10 percent cobbles, 5 percent stones; slightly acid (pH 6.5); gradual wavy boundary. (20 to 24 inches thick)
3C2--47 to 80 inches; yellowish brown (10YR 5/4) extremely gravelly loamy coarse sand; dark yellowish brown (10YR 4/4) moist; single grain; loose, nonsticky and nonplastic; common very fine, and few fine, medium and coarse roots; many very fine interstitial pores; 70 percent vesicular basalt and cinder gravel, 10 percent cobbles; 5 percent stones; slightly acid (pH 6.5).
TYPE LOCATION: Shasta County, California; about 10.5 miles southeast of Burney, on the north side of Freener Peak; 800 feet north and 1,550 feet east of the southwest corner of sec. 33, T. 34 N., R. 4 E., Burney SE (Burney Mtn. East) quadrangle (7.5 minute series).
RANGE IN CHARACTERISTICS: Depth to bedrock is greater than 60 inches. The mean annual soil temperature is 42 to 46 degrees F. The soil temperature exceeds 41 degrees F. from mid May to mid November, (180 days) and exceeds 47 degrees F. from early July to early October. The soil moisture control section (17 to 80 inches) is dry in all parts from mid July to mid October (60 to 90 days) and is moist in all parts from early November to mid June. The particle-size control section (0 to 40 inches) ranges from 3 to 10 percent clay and 40 to 85 percent rock fragments. Base saturation by ammonium acetate ranges from 50 to 78 percent.
The A horizon color is 10YR 5/3, or 5/4. Moist color is 10YR 3/2, 3/3 or 7.5YR 3/2. Organic matter ranges from 7 to 9 percent. Clay content ranges from 5 to 10 percent. Rock fragments, mostly vesicular basalt ranges from 35 to 55 percent, gravel and cobbles range from 0 to 5 percent. NaF pH ranges from 10.5 to 11.5.
The Bw1 horizon color is 7.5YR 5/4, or 6/4. Moist color is 7.5YR 4/4, or 4/6. Organic matter ranges from 1.0 to 2.0 percent. Clay content ranges from 5 to 10 percent. Rock fragments, mostly vesicular basalt gravel range from 35 to 55 percent and cobbles range from 0 to 5 percent. NaF pH ranges from 10.5 to 11.0.
The 2Bw horizon color is 7.5YR 6/4, 7/4, or 6/6. Moist color is 7.5YR 4/4, or 4/6. Organic matter ranges from 0.20 to 0.50 percent. Clay content ranges from 3 to 10 percent. Rock fragments, mostly vesicular basaltic gravel, range from 35 to 70 percent and cobbles range from 0 to 15 percent. NaF pH ranges from 10.0 to 10.5.
The 3C horizon color is 10YR 5/4, 6/4 or 7.5YR 7/6. Moist color is 10YR 3/4, 4/4 or 7.5YR 4/6. Organic matter ranges from 0.05 to 0.20 percent. Clay content ranges from 3 to 10 percent. Rock fragments, mostly vesicular basaltic gravel and some cindery gravel range from 60 to 70 percent, cobbles range from 0 to 20 percent and stones range from 0 to 5 percent NaFpH ranges from 8.8 to 10.5.
Andic property data: (see remarks for explanation) Depth P-Ret BD pH NaF Glass Alo Feo 15-Bar H2O 0-4 92 0.88 11.0 34 2.93 0.92 19.56 4-12 98 0.93 11.0 36 4.12 1.07 17.22 12-17 96 0.99 10.5 18 3.11 1.05 16.57 17-25 87 1.00 10.0 ND 2.67 1.05 15.23 25-47 78 ND 8.8 ND 2.46 1.86 13.97 47-80 73 ND 10.0 ND 1.14 1.38 15.01
COMPETING SERIES: There are no competing series.
GEOGRAPHIC SETTING: Wengler soils are on lava plateaus, hills, and escarpments. Slopes are 5 to 50 percent. These soils formed in tephra deposited over basaltic lava flows. Elevation is 4600 to 5800 feet. The climate is subhumid with warm dry summers and cold moist winters. Mean annual precipitation is 35 to 45 inches. Snowfall is 60 to 96 inches. The mean annual temperature is 39 to 41 degrees F. degrees F. Frost-free season is 50 to 80 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Dekkas (T), Goulder, and Twinbuttes (T) soils. Dekkas soils are on outwash plains adjacent to and between basaltic fissure flows, and are ashy. Goulder soils are on mountain slopes, and are medial over loamy-skeletal. Twinbuttes soils are on cindercones and lava flows and are medial-skeletal.
DRAINAGE AND PERMEABILITY: Somewhat excessively drained; slow to rapid runoff; rapid permeability in the upper part and very rapid in the lower part.
USE AND VEGETATION: This soil is used for timber production. The natural vegetation is ponderosa pine, white fir, sugar pine, greenleaf manzanita, snowbrush ceanothus, squawcarpet, needlegrass, antelope bitter brush, and some Douglas fir and Incense-cedar.
DISTRIBUTION AND EXTENT: Northeastern California. The soils are not extensive. MLRA is 22.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Davis, California
SERIES ESTABLISHED: Shasta County, Intermountain Soil Survey Area, California 1994. Source of name is from a small town.
REMARKS: Series relassified on September, 1994. Competing series not reviewed at that time.
Ochric epipedon - the zone from the soil surface to about 4 inches (A horizon).
Cambic horizon - the zone from 4 to 17 inches (Bw1, 2Bw2 horizons).
Rock fragments, mostly gravel, on the soil surface, range from 15 to 35 percent. Mineralogy is dominantly amorphic (allophane/imogolite).
ADDITIONAL DATA: This pedon was characterized by UC Davis in 1988. Sample number is #1694, unpublished.