LOCATION BINGVILLE OREstablished Series
TAXONOMIC CLASS: Clayey-skeletal, smectitic, frigid Pachic Palexerolls
TYPICAL PEDON: Bingville very cobbly loam - rangeland, on a 7 percent slope at an elevation of 4,200 feet. (When described on June 29, 1999, the soil was slightly moist in the surface but moist below. Colors are for moist soils unless otherwise noted.)
A--0 to 6 inches; very dark brown (10YR 2/2) very cobbly loam, dark grayish brown (10YR 4/2) dry; moderate fine granular structure; slightly hard, friable, slightly sticky and slightly plastic; few fine and many very fine roots; few fine and common very fine irregular pores; 10 percent stones, 15 percent cobbles, and 25 percent gravel; slightly alkaline (pH 7.6); abrupt smooth boundary. (2 to 6 inches thick)
2Bt1--6 to 15 inches; very dark brown (10YR 2/2) very cobbly clay, very dark brown (10YR 2/2) dry; moderate medium angular blocky structure; extremely hard, extremely firm, very sticky and very plastic; few fine and common very fine roots; few fine and very fine tubular pores; continuous distinct clay films on ped faces and in pores; 30 percent cobbles and 10 percent gravel; slightly alkaline (pH 7.6); clear smooth boundary.
2Bt2--15 to 21 inches; dark brown (7.5YR 3/2) cobbly clay, dark brown (7.5YR 3/2) dry; moderate fine and medium prismatic structure; extremely hard, extremely firm, very sticky and very plastic; few very fine roots; few very fine tubular pores; continuous distinct clay films on ped faces and in pores; 15 percent cobbles and 15 percent gravel; slightly alkaline (pH 7.8); abrupt wavy boundary. (Combined thickness of the 2Bt horizons is 15 to 34 inches.)
3Cr--21 to 26 inches; tuff; dark yellowish brown (10YR 4/4) moist and light yellowish brown (10YR 6/4) dry; abrupt wavy boundary. (0 to 7 inches thick)
4R--26 inches; basalt
TYPE LOCATION: Wheeler County, Oregon, located on Hog Ridge about 5 miles NW of the junction of the Hwy. 19 and 26 or 13 miles south of Kimberly; 1,400 feet south and 600 feet east of the NW corner of section 34, T. 11 S., R. 25 E.
RANGE IN CHARACTERISTICS: These soils are usually moist in some part of the moisture control section for more than one-half of the time when the soil temperature is 41 degrees F. or more (xeric). The mean annual soil temperature is 43 to 47 degrees F. An abrupt clay increase exists between the A and 2Bt horizons of 20 to 30 percent within a vertical distance of one inch. Depth to a lithic contact is 20 to 40 inches. The thickness of the mollic epipedon is 20 to 30 inches. The particle-size control section has a weighted average of 35 to 50 percent rock fragments.
The A horizon has value of 2 or 3 moist, 4 or 5 dry, and chroma of 1 to 3 moist and dry. It is loam with 20 to 27 percent clay. It has 0 to 10 percent stones, 0 to 15 percent cobbles, and 0 to 25 percent gravel.
The 2Bt horizons have hue of 10YR or 7.5YR, value of 2 to 4 moist and dry, and chroma of 1 to 3 moist and dry. It is a clay with 40 to 60 percent clay. It has 0 to 30 percent stones, 15 to 30 percent cobbles, and 5 to 15 percent gravel. Soil structure is angular blocky or prismatic. It is slightly or moderately alkaline.
COMPETING SERIES: There are no competing series.
GEOGRAPHIC SETTING: Bingville soils are on plateaus and benches. They are formed in clayey residuum and colluvium derived from basalt and tuff. Slopes are 2 to 30 percent. Elevation is 3,800 to 5,800 feet. The climate can be characterized by cold, wet winters and hot, dry summers. The mean annual precipitation is 12 to 16 inches, and the mean annual temperature is 41 to 45 degrees F. The frost-free period is 30 to 90 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Diffin, Gwin, Kettenbach, and Prill soils. Diffin soils are deep or very deep to bedrock, have secondary carbonates, and are found on steep, north facing slopes. Gwin and Kettenbach soils have mesic temperature regime and are on steep, south facing slopes. In addition, Gwin soils are shallow to bedrock and Kettenbach are moderately deep. Prill soils have mesic temperature regimes, are non-skeletal, and are on benches.
DRAINAGE AND PERMEABILITY: Well drained; very slow permeability.
USE AND VEGETATION: These soils are used for livestock grazing and wildlife habitat. The potential native vegetation is Idaho fescue, bluebunch wheatgrass, one-spike oatgrass, Sandbery bluegrass, and low sagebrush.
DISTRIBUTION AND EXTENT: East-central Oregon, MLRA B-10. This series is of small extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Portland, Oregon
SERIES ESTABLISHED: John Day Fossil Beds National Monument, Oregon, 2000.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
mollic epipedon - from surface to 21 inches (A, 2Bt1, and 2Bt2 horizons)
argillic horizon - 6 to 21 inches (2Bt1 and 2Bt2 horizons)
"Pale" feature - abrupt increase of 25 percent clay between the A and the 2Bt1 horizons
COLE- 5.03
Particle size control section - 6 to 21 inches (2Bt1 and 2Bt2 horizons) averages 35 percent rock fragments.
ADDITIONAL DATA: Partial lab data is available for this soil. Reference samples S98OR-023-002-(1-4) from Wheeler County were sent to NSSL in Lincoln, NE (1/99)