LOCATION KINZIE IDEstablished Series
TAXONOMIC CLASS: Fine-silty, mixed, superactive, mesic Argiduridic Durixerolls
TYPICAL PEDON: Kinzie silt loam on a 3 percent slope facing southeast at an elevation of 4,700 feet in rangeland. When described on September 14, 1986 the soil was slightly moist below 20 inches. (Colors are for dry soil unless otherwise noted.)
A1--0 to 2 inches; brown (10YR 5/3) silt loam, very dark grayish brown (10YR 3/2) moist; weak fine platy structure parting to moderate fine granular; soft, very friable, slightly sticky and slightly plastic; many very fine, fine, medium and few coarse roots; many very fine and fine tubular pores; 2 percent rock fragments; neutral (pH 7.0); clear smooth boundary. (0 to 5 inches thick)
A2--2 to 6 inches; yellowish brown (10YR 5/4) silt loam, dark brown (10YR 3/3) moist; weak fine subangular blocky structure parting to moderate fine granular; slightly hard, friable, slightly sticky and slightly plastic; many very fine, fine, medium and few coarse roots; many very fine and fine tubular pores; 2 percent rock fragments; neutral (pH 7.2); clear smooth boundary. (2 to 6 inches thick)
Bt1--6 to 10 inches; yellowish brown (10YR 5/4) silty clay loam; dark brown (10YR 3/3) moist; moderate fine subangular blocky structure; slightly hard, friable, slightly sticky and slightly plastic; common very fine, fine and few medium and coarse roots; common very fine and fine tubular pores; common distinct clay films on faces of peds and in pores; 2 percent rock fragments; neutral (pH 7.2); gradual wavy boundary. (4 to 12 inches thick)
Bt2--10 to 17 inches; yellowish brown (10YR 5/4) silty clay loam; dark yellowish brown (10YR 4/4) moist; moderate fine and medium subangular blocky structure; hard, firm, slightly sticky and slightly plastic; common very fine, fine and few medium and coarse roots; common very fine and fine tubular pores; common distinct clay films on faces of peds and in pores; 2 percent rock fragments; slightly alkaline (pH 7.4); abrupt smooth boundary. (4 to 10 inches thick)
Btkb1--17 to 20 inches; yellowish brown (10YR 5/4) silty clay loam, dark yellowish brown (10YR 4/4) moist; strong medium and coarse prismatic structure; very hard, very firm, sticky and plastic; common very fine, fine and few medium and coarse roots; common very fine and fine tubular pores; many prominent clay films on faces of peds; 2 percent gravel and 5 percent cobbles at 20 inches; slightly effervescent with strongly effervescent veins (15 percent calcium carbonate equivalent); slightly alkaline (pH 7.4); clear wavy boundary. (3 to 10 inches thick)
Btkb2--20 to 23 inches; light yellowish brown (10YR 6/4) silty clay loam, light brown (7.5YR 6/4) moist; moderate medium and coarse prismatic structure; very hard, very firm, sticky and plastic; common very fine, fine and few medium and coarse roots; few very fine and fine tubular pores; common prominent clay films on faces of peds; 2 percent rock fragments; lime masses on faces of prisms; strongly effervescent (20 percent calcium carbonate equivalent); slightly alkaline (pH 7.6); clear wavy boundary. (3 to 10 inches thick)
Bkb--23 to 27 inches; very pale brown (10YR 7/3) silty clay loam, brown (7.5YR 5/4) moist; moderate medium subangular blocky structure; hard, firm, slightly sticky and slightly plastic; common very fine, fine and few medium and coarse roots; common very fine and fine tubular pores; 2 percent rock fragments; strongly effervescent (25 percent calcium carbonate equivalent); moderately alkaline (pH 8.0); abrupt wavy boundary. (4 to 10 inches thick)
Bkqb--27 to 38 inches; pinkish white (7.5YR 8/2) silty clay loam, pink (7.5YR 7/4) moist; massive; hard, friable, slightly sticky and slightly plastic; few very fine and fine roots; common very fine and fine tubular pores; 10 percent cemented nodules; 5 percent gravel, 5 percent cobbles; rock fragments coated with lime and silica; strongly effervescent (25 percent calcium carbonate equivalent); moderately alkaline (pH 8.2); abrupt irregular boundary. (4 to 16 inches thick)
Bkqmb--38 to 47 inches; pinkish white (7.5YR 8/2) matrix indurated duripan, pink (7.5YR 7/4) moist; light brown (7.5YR 6/4) organic coatings;continuous indurated laminar caps from 1 to 2mm thick, material between caps is strongly cemented; roots matted on silica cap; 10 percent gravel, 40 percent cobbles; strongly effervescent; abrupt broken boundary. (2 to 25 inches thick)
2R--47 inches; lime silica coated basalt
TYPE LOCATION: Lincoln County, Idaho; about 5 miles north and 2 miles west of Richfield; 100 feet north and 400 feet east of the southwest corner of Section 28, T3S, R19E. Lat. 43 deg. 8 min. 5 sec., Long. 114 deg 12 min 8 sec.
RANGE IN CHARACTERISTICS:
Average annual soil temperature - 47 to 50 degrees F.
Percent organic matter in upper 40 cm - 1 to 4
Depth to carbonates - 10 to 30 inches
Depth to bedrock - 40 to 60 inches
Depth to the duripan - 21 to 39 inches
Average clay in control section - 23 to 35 percent
Mollic epipedon thickness - 9 to 17 inches thick
Reaction - neutral to strongly alkaline
A horizon
Chroma - 3 or 4 dry, 2 or 3 moist
Bt horizon
Value - 3 or 4 moist
Chroma - 3 through 6 dry or moist
Clay content - 23 to 32 percent
Texture - SIL, SICL
Btkb horizon
Hue - 10YR or 7.5YR
Value - 5 or 6 dry, 4 to 6 moist
Chroma - 3 or 4 dry or moist
Clay content - 35 to 45 percent
Texture - SIC, C, SICL
Rock fragments - 0 to 5 percent gravel, 0 to 5 percent cobbles
Bkb and Bkqb horizons
Hue - 10YR or 7.5YR
Value - 7 or 8 dry, 5 to 7 moist
Chroma - 2 to 4 dry or moist
Texture - SIL, SICL
Clay content - 25 to 35 percent
Rock fragments - 0 to 5 percent gravel, 0 to 5 percent cobbles
Bkqmb horizons
Thickness of laminar cap - 1mm to 3mm
Cementation between caps - strongly cemented or indurated
COMPETING SERIES: This is the the Coughanour series. Coughanour soils do not have a buried Bt horizon.
GEOGRAPHIC SETTING: Kinzie soils are on nearly level to moderately steep basalt plains and buttes. Slopes range from 1 to 15 percent. Elevations range from 4,200 to 4,800 feet. The soil has formed in loess and silty alluvium. The soils are in a semi arid climate with annual precipitation of 11 to 13 inches. The mean annual temperature is about 45 to 48 degrees F. The frost free period is 85 to 100 days.
GEOGRAPHICALLY ASSOCIATED SOILS: This is the Marley(T) series. The Marley soil is deep to a duripan. The Marley series is on the same landforms as Kinzie.
DRAINAGE AND PERMEABILITY: Well drained; slow to medium runoff; slow permeability.
USE AND VEGETATION: Mainly used for rangeland. Vegetation is Wyoming big sagebrush, bluebunch wheatgrass, threetip sagebrush and needlegrass.
DISTRIBUTION AND EXTENT: South central Idaho. The series is not extensive.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Portland, Oregon
SERIES ESTABLISHED: Lincoln County, Idaho, 1993.
REMARKS: Diagnostic horizons and features recognized in this series are:
Buried Bt horizon - an abrupt increase in clay content and often an increase in chroma indicating a possible separate deposition from the overlaying material.
Mollic epipedon - the zone from 0 to 10 inches (A1, A2 and Bt1 horizons)
Argillic horizon - the zone from 6 to 23 inches (Bt1, Bt2, Btkb1 and Btkb2 horizons)
Calcic horizon - the zone from 20 to 38 inches (Btkb2, Bkb and Bkqb horizons)
Duripan - the zone from 38 to 47 inches (Bkqmb horizon)