LOCATION GOODING IDEstablished Series
TAXONOMIC CLASS: Fine, smectitic, mesic Vertic Paleargids
TYPICAL PEDON: Gooding silt loam -- on a 3 percent slope at an elevation of 4,900 feet in rangeland. When described on May 26, 1983, the soil was dry to 3 inches and moist below. (Colors are for air dry soil unless otherwise stated.)
A1--0 to 2 inches; brown (10YR 5/3) silt loam, very dark grayish brown (10YR 3/2) moist; weak fine granular structure; soft, very friable, slightly sticky and slightly plastic; many very fine and fine roots; many very fine and fine interstitial pores; 5 percent gravel, 5 percent cobbles; neutral (pH 7.2); clear broken boundary. (0 to 7 inches thick)
A2--2 to 7 inches; brown (10YR 5/3) silt loam, dark brown (10YR 3/3) moist; moderate medium and coarse platy structure; slightly hard, friable, slightly sticky and slightly plastic; many very fine and fine roots; many very fine and fine tubular pores; 5 percent gravel, 5 percent cobbles; neutral (pH 7.2); gradual wavy boundary. (2 to 7 inches thick)
E--7 to 9 inches; pale brown (10YR 6/3) silt loam, brown (10YR 5/3) moist; moderate fine and medium angular blocky structure; slightly hard, friable, slightly sticky and slightly plastic; many very fine roots, most are concentrated at lower boundary; many very fine and fine tubular pores; 5 percent gravel; bleached silt and sand particles on faces of peds; neutral (pH 7.0); abrupt smooth boundary. (1 to 4 inches thick)
Bt1--9 to 15 inches; yellowish brown (10YR 5/4) silty clay, brown (10YR 4/3) moist; strong medium prismatic structure; very hard, very firm, very sticky and very plastic; common very fine and fine roots; common very fine and fine tubular pores; continuous thick clay films lining pores and on faces of peds; 5 percent gravel; neutral (pH 7.2); gradual smooth boundary. (4 to 9 inches thick)
Bt2--15 to 23 inches; yellowish brown (10YR 5/4) silty clay, brown (10YR 4/3) moist; strong medium and coarse angular blocky structure; extremely hard, very firm, very sticky and very plastic; few fine and medium roots; common very fine and fine tubular pores; continuous thick clay films lining pores and on faces of peds; 5 percent gravel; mildly alkaline (pH 7.4); gradual wavy boundary. (5 to 12 inches thick)
Bt3--23 to 34 inches; pale brown (10YR 6/3) silty clay, brown (10YR 4/3) moist; strong medium and coarse angular blocky structure; very hard, firm, very sticky and very plastic; few fine roots; common very fine and fine tubular pores; many moderately thick clay films lining pores and on faces of peds; 5 percent gravel; mildly alkaline (pH 7.4); gradual wavy boundary. (0 to 15 inches thick)
Btk--34 to 44 inches; very pale brown (10YR 8/4) silty clay loam, light yellowish brown (10YR 6/4) moist; moderate medium and coarse angular blocky structure; hard, firm, very sticky and very plastic; few fine roots; many very fine and fine tubular pores; common moderately thick clay films lining pores and on faces of peds; strong effervescence (20 percent calcium carbonate); mildly alkaline (pH 7.6); clear wavy boundary. (7 to 14 inches thick)
Bkq--44 to 49 inches; very pale brown (10YR 7/4) silty clay loam, strong brown (7.5YR 5/6) moist; moderate thin and medium platy structure; hard, firm, sticky and plastic; few fine and medium roots as mats on top of duripan; few very fine and fine tubular pores; violent effervescence (30 percent calcium carbonate); moderately alkaline (pH 8.0); abrupt smooth boundary. (3 to 30 inches thick)
Bkqm--49 to 62 inches; very pale brown (10YR 7/4) weakly cemented duripan; massive; extremely hard, extremely firm; many very fine and fine discontinuous tubular pores filled with calcium carbonate and silica; plates are weakly cemented with calcium carbonate and silica; violent effervescence (30 percent calcium carbonate); moderately alkaline (pH 8.2). (1 to 18 inches thick)
2R--62 inches; basalt bedrock with silica capping.
TYPE LOCATION: Blaine County, Idaho; about 3 miles east of the Magic Reservoir dam; 1,200 feet west and 1,200 feet north of the southeast corner, sec. l4, T. 2 S., R. l8 E.
RANGE IN CHARACTERISTICS:
Depth to calcium carbonates - 17 to 34 inches
Depth to bedrock - 41 inches or more
Depth to duripan - 40 to 60 inches
Average annual soil temperature - 47 to 53 degrees F.
Average summer soil temperature - 60 to 70 degrees F.
Other features - AE horizon occurs in some pedons
A horizon
Value - 5 or 6 dry, 3 to 5 moist
Chroma - 2 or 3 dry or moist
E horizon
Value - 5 to 7 dry, 3 to 5 moist
Chroma - 2 to 4 dry or moist
Bt horizon
Hue - 10YR or 7.5YR
Value - 5 to 7 dry, 4 to 6 moist
Chroma - 2 to 4 dry or moist
Texture - SIC, C, CL, or SICL
Clay content - 35 to 59 percent
Clay increase in upper 2.5 cm - 15 to 25 percent (from overlying E horizon)
Reaction - neutral to moderately alkaline
Btk and Bkq horizons
Value - 6 or 7 dry, 4 or 5 moist
Chroma - 3 or 4 dry or moist
Texture - SIC, SICL, L, CL
Reaction - moderately or strongly alkaline
Bkqm horizon
Hue - 10YR or 7.5YR
Value - 4 to 8 dry
Chroma 3 or 4 dry
Calcium carbonate equivalent - 15 to 40 percent
Thickness of plates - 2 to 10mm
Vertical distance between plates - 3 to 12cm
COMPETING SERIES: These are the Acoma, Berdugo, Biscaro Borda, Bowns, Brent, Chardoton, Gariper (T), Hagata, Locey, Lodico, Mahala, Phing, Poall, Reba, Sorf, Spangenberg, and Verdico series. Acoma soils have gravelly sandy clay argillic horizons and gravelly to extremely gravelly C horizons. Berdugo and Spangenberg soils lack an E horizon and a calcic horizon. Borda, Reba, and Sorf soils lack E horizons and lack cementation in the lower part of the profile. Biscaro, Bowns, Hagata, Locey, Lodico, Mahala, and Verdico soils are moderately deep to a lithic or paralithic contact. Brent soils lack bedrock above 60 inches and have less than 0.6 organic carbon content in some horizons above a depth of 10 inches. Chardoton soils have an MAST of greater than 52 degrees F. Gariper and Poall soils lack E horizons. Phing soils are moderately deep to a weak silica pan.
GEOGRAPHIC SETTING: Gooding soils are on fan terraces and pediments on basalt plains and buttes. Slopes range from 0 to 20 percent. Elevations range from 3,500 to 5,300 feet. The soil formed in mixed alluvium and loess from extrusive rocks, volcanic ash, and lacustrine sources. The soils are in a semi arid climate with annual precipitation of 9 to 13 inches. The average annual temperature is about 45 to 51 degrees F. The frost-free period is 90 to 125 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Bostrum, Hamrub, Torney, and Yutrue series. Bostrum soils are 20 to 40 inches to bedrock. Torney soils do not have calcic horizons. Hamrub soils have less than 35 percent clay in the argillic horizon. Yutrue soils have silty clay to the surface. All these soils are on the same land form as Gooding soils.
DRAINAGE AND PERMEABILITY: Well drained; slow to medium runoff; very slow permeability.
USE AND VEGETATION: Gooding soils are used mainly for rangeland, wildlife habitat, and irrigated pasture and cropland. Common crops are small grains, beans, and alfalfa. The dominant natural vegetation is Wyoming big sagebrush, alkali sagebrush, bluebunch wheatgrass, needlegrass, and sandberg bluegrass.
DISTRIBUTION AND EXTENT: South central and southwest Idaho. The series is of moderate extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Portland, Oregon
SERIES ESTABLISHED: Blaine County, Idaho, 1985.
REMARKS: Diagnostic horizons and features recognized in this pedon:
Argillic horizon - zone from 9 to 34 inches (Bt1, Bt2, and Bt3 horizons)
Abrupt textural change - clay increase of approximately 20 percent in the upper 2.5 cm of the Bt horizon (from the overlying E horizon)
Calcic horizon - zone from 34 to 49 inches (Bk and 2Bkq horizons)