LOCATION GARDENS CAEstablished Series
TAXONOMIC CLASS: Fine-loamy, mixed, superactive, frigid Udollic Endoaqualfs
TYPICAL PEDON: Gardens loam on a northwest facing 1 percent slope under a cover of rushes and sedges at an elevation of 4865 feet. (Colors are for dry soil unless, otherwise stated. When described July 25, 1989, the soil was moist from 13 to 42 inches).
A--0 to 3 inches; grayish brown (10YR 5/2) loam, very dark grayish brown (10YR 3/2) moist; strong thick platy structure parting to moderate fine subangular blocky; slightly hard, friable, nonsticky and slightly plastic; common very fine and few fine roots; many very fine interstitial pores; common fine distinct strong brown (7.5YR 5/6) masses of iron accumulation; slightly acid (pH 6.1); abrupt smooth boundary. (2 to 3 inches thick)
Bt1--3 to 7 inches; grayish brown (10YR 5/2) clay loam, very dark grayish brown (10YR 3/2) moist; moderate fine subangular blocky structure; very hard, firm, slightly sticky and slightly plastic; few very fine and fine roots; few very fine tubular pores; few thin clay films on ped faces; common fine distinct yellowish red (5YR 5/6) masses of iron accumulation; slightly acid (pH 6.4); clear smooth boundary. (3 to 4 inches thick)
Bt2--7 to 12 inches; pale brown (10YR 6/3) sandy clay loam, dark yellowish brown (10YR 4/4) moist; moderate medium subangular blocky structure; hard, firm, slightly sticky and slightly plastic; few very fine and fine roots; few very fine tubular pores; common thin clay films on ped faces and few moderately thick clay films in pores; common medium faint brown (10YR 5/3) masses of iron accumulation; slightly acid (pH 6.4); abrupt smooth boundary. (4 to 7 inches thick)
Bt3--12 to 15 inches; pale brown (10YR 6/3) sandy clay loam, dark yellowish brown (10YR 4/4) moist; moderate fine subangular blocky structure; slightly hard, friable, slightly sticky and slightly plastic; few very fine and fine roots; common very fine tubular pores; common thin clay films in pores and on ped faces; 10 percent gravel, few fine distinct brown (7.5YR 5/4) masses of iron accumulation; neutral (pH 6.6); abrupt smooth boundary. (3 to 5 inches thick)
Bq1--15 to 22 inches; very pale brown (10YR 7/3) sandy clay loam, strong brown (7.5YR 5/6) and brown (10YR 5/3) moist; weak fine subangular blocky structure; hard and very hard, brittle and very firm, slightly sticky and slightly plastic; few very fine and fine roots; common very fine tubular pores; few thin clay films in pores and on ped faces; weakly cemented discontinuous matrix with 20 percent durinodes; 10 percent gravel; common medium faint pale yellow (2.5Y 7/4), common medium prominent black (10YR 2/1) iron depletions, and distinct pink (7.5YR 7/4) masses of iron accumulation; neutral (pH 6.8); clear smooth boundary. (6 to 8 inches thick)
Bq2--22 to 25 inches; very pale brown (10YR 7/3) sandy clay loam, yellowish brown (10YR 5/4) moist; moderate thin platy structure parting to moderate fine subangular blocky; hard and very hard, firm, slightly sticky and slightly plastic; few fine roots; few very fine tubular pores; weak cementation; iron and manganese segregation; few fine distinct light olive brown (2.5Y 5/4) and common medium distinct yellowish red (5YR 5/6) and black (10YR 2/1) moist redox concentrations; neutral (pH 7.0); abrupt smooth boundary. (3 to 5 inches thick)
Bq3--25 to 30 inches; light gray (10YR 7/1) sandy loam, gray (10YR 6/1) moist; common coarse prominent brown (7.5YR 4/2) and light yellowish brown (2.5Y 6/4) dry, many coarse prominent dark reddish brown (5YR 3/2) and dark grayish brown (2.5Y 4/2) moist redox concentrations; weak fine subangular blocky structure; hard, firm, nonsticky and nonplastic; few fine roots; few very fine tubular pores; weak discontinuous cementation; manganese and iron segregation; neutral (pH 7.0); abrupt smooth boundary. (4 to 7 inches thick)
Bw--30 to 33 inches; light brownish gray (10YR 6/2) and brown (7.5YR 5/4) very gravelly sandy loam, dark grayish brown (10YR 4/2) and brown (7.5YR 4/4) moist; weak fine subangular blocky structure; hard, firm, nonsticky and nonplastic; few fine roots; few very fine tubular pores; 40 percent gravel; common medium distinct olive brown (2.5Y 4/4) moist redox concentrations; neutral (pH 7.0); abrupt smooth boundary. (3 to 5 inches thick)
2Bq1--33 to 42 inches; light gray (10YR 7/2) fine sandy loam, dark grayish brown (10YR 4/2) moist; weak thin platy structure parting to weak fine subangular blocky structure; hard, firm, nonsticky and nonplastic; few fine roots; few very fine tubular pores; weakly cemented by manganese and silica; few fine faint very dark grayish brown (10YR 3/2) and brown (7.5YR 4/4) moist redox concentrations; neutral (pH 7.0); abrupt smooth boundary. (7 to 10 inches thick)
2Bq2--42 to 45 inches; very pale brown (10YR 7/3) sandy clay loam, yellowish brown (10YR 5/4) moist; massive; slightly hard, friable, nonsticky and slightly plastic; few very fine tubular pores; weakly cemented by manganese and silica; few fine faint very dark grayish brown (10YR 3/2) and brown (7.5YR 4/4) moist redox concentrations; neutral (pH 7.0); gradual smooth boundary. (3 to 5 inches thick)
2C--45 to 62 inches; very pale brown (10YR 7/3) fine sandy loam, yellowish brown (10YR 5/4) moist; massive; slightly hard, friable, nonsticky and nonplastic; few very fine tubular pores; few fine faint very dark grayish brown (10YR 3/2) and brown (7.5YR 4/4) moist redox concentrations; neutral (pH 7.0).
TYPE LOCATION: Shasta County, California; about 9.9 miles southwest of Burney 1,300 feet west and 350 feet north of the southeast corner of sec. 1, T. 33 N., R. 2 E., Manzanita Lake NW (Jacks Backbone) quadrangle (7.5 minute series).
RANGE IN CHARACTERISTICS: Thickness of the solum is 40 to 60 inches. The mean annual soil temperature is 41 to 45 degrees F. The soil temperature exceeds 41 degrees F.
f.om mid May to mid November (170 to 190 days) and exceeds 47 degrees F. from early July to early October. The soil moisture control section (6 to 28 inches) is never dry in all parts and is moist in all parts from early October to mid July. The particle-size control section (3 to 22 inches) averages 27 to 30 percent clay and 0 to 10 percent rock fragments.
The A horizon color is 10YR 5/2, 6/2, or 7/2. Moist color is 10YR 3/1, 3/2 or 4/2. Organic matter ranges from 2 to 3 percent. Clay content ranges from 18 to 27 percent.
The Bt horizon color is 10YR 5/2 or 5/3 in the upper part and 10YR 6/2, 6/3, 7/2, 7/3 or 7.5YR 5/4 in the lower part. Moist color is 10YR 3/2, or 3/3 in the upper part and 10YR 4/3, 4/4; 7.5YR 3/4 or 4/6 in the lower part. Organic matter ranges from 0.5 to 1 percent. Texture is clay loam or sandy clay loam. Clay content ranges from 28 to 35 percent. Rock fragments, mostly gravel, range from 0 to 15 percent. Reaction ranges from moderately acid to slightly acid.
The Bq and Btq horizon color is 10YR 7/1, 7/2 or 7/3. Moist color is 10YR 5/3, 5/4, 6/1; 7.5YR 4/6 or 5/6. Organic matter ranges from 0.2 to 0.5 percent. Texture is sandy clay loam in the upper part and sandy loam in the lower part. Clay content ranges from 18 to 27 percent. Rock fragments, mostly gravel, range from 0 to 10 percent.
The Bw horizon color is 7.5YR 5/4 or 6/4. Moist color is 7.5YR 4/4 or 5/4. Organic matter ranges from 0.2 to 0.5 percent. Clay content ranges from 15 to 18 percent. Rock fragments, mostly gravel, range from 35 to 60 percent.
The 2Bq horizon color is 10YR 7/2 or 7/3. Moist color is 10YR 4/2, or 5/4. Organic matter ranges from 0.2 to 0.5 percent. Texture is sandy clay loam or fine sandy loam. Clay content ranges from 15 to 30 percent. Rock fragments, mostly gravel, range from 0 to 10 percent.
The C horizon color is 10YR 6/4 or 7/3. Moist color is 10YR 4/3, 4/4, 5/4; or 7.5YR 4/4. Organic matter ranges from 0.2 to 0.5 percent. Clay content ranges from 15 to 18 percent. Rock fragments, mostly gravel, range from 0 to 10 percent.
COMPETING SERIES: This is the Frewsburg (NY) series. Frewsburg soils have bedrock at depths of 20 to 40 inches.
GEOGRAPHIC SETTING: Gardens soils are in basins. Slopes are 0 to 2 percent. These soils formed in alluvium from mixed extrusive igneous rock. Elevation is 4,700 to 5,000 feet. The climate is subhumid with warm moist summers and cold moist winters. Mean annual precipitation is 35 to 50 inches. Snowfall is 72 to 96 inches. The mean annual temperature is 39 to 41 degrees F. The mean January temperature is about 25 degrees F. The mean July temperature is about 55 degrees F. Frost-free period is 50 to 80 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Carberry, Goulder, Jacksback and Stacher soils. Carberry soils are on lava plateaus and hills, are deep and are medial over loamy-skeletal. Goulder soils are on mountains and lava plateaus, are very deep, and are medial over loamy-skeletal. Jacksback soils are on terraces, are very deep, have mollic epipedons, cambic horizons, and are fine-loamy. Stacher soils are on mountains, are very deep, and are medial over loamy-skeletal.
DRAINAGE AND PERMEABILITY: Poorly drained; ponded runoff; moderately slow permeability. A water table occurs from the surface to 3 feet below the surface from April through July and is below 3.5 feet from August through November. Ponding occurs at depths of 6 to 12 inches above the surface from March through June. Spring snowmelt flows across the surface from March through June.
USE AND VEGETATION: This soil is used for livestock grazing. The present vegetation is mainly rushes, sedges, bluegrass, tufled hairgrass, bentgrass and perennial forbs.
DISTRIBUTION AND EXTENT: Northeast 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 the local name used for the area where this soil occurs
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon - the zone from the soil surface to 7 inches (A,Bt1) is not meet thichness requirements for a mollic epipdon
Argillic horizon - the zone from 3 to 22 inches (Bt1, Bt2, Bt3, Btq)