LOCATION PRIVER IDTentative Series
TAXONOMIC CLASS: Loamy-skeletal, mixed, superactive, frigid, shallow Typic Haploxerolls
TYPICAL PEDON: Priver channery loam--on a 4 percent slope at 5090 feet in small grain. (Color is for dry soil unless otherwise noted. When described on August 19, 1987, the soil was dry throughout.)
Ap--0 to 7 inches; grayish brown (10YR 5/2) channery loam, very dark brown (10YR 2/2) moist; weak medium subangular blocky structure; slightly hard, friable, slightly sticky and slightly plastic; common very fine and fine roots; common very fine and fine tubular pores; 20 percent channers and 5 percent gravel; neutral (pH 7.0 ); abrupt wavy boundary. (5 to 8 inches thick)
Bw--7 to 12 inches; grayish brown (10YR 5/2) very channery loam, very dark grayish brown (10YR 3/2) moist; moderate fine subangular blocky structure; slightly hard, friable, slightly sticky and slightly plastic; common very fine and fine roots; common very fine and fine tubular pores; 35 percent channers and 15 percent gravel; neutral (pH 7.2 ); clear wavy boundary. (4 to 12 inches thick)
Cr--12 inches; weathered tuff.
TYPE LOCATION: Franklin County, Idaho; about 3 miles south and 3 miles west of Mink Creek, Idaho, about 600 feet west and 950 feet north of the southeast corner of section 22, T. 14 S., R. 40 E.
RANGE IN CHARACTERISTICS:
Thickness of the mollic epipedon - 10 to 20 inches
Average annual soil temperature - 43 to 47 degrees F.
Control section averages - 10 to 18 percent clay
Coarse fragments in control section - average 35 to 45 percent
Depth to paralithic contact - 10 to 20 inches
A horizon
Value - 4 or 5 dry, 2 or 3 moist
Chroma - 2 or 3 dry or moist
Bw horizon
Value - 4 or 5 dry, 2 or 3 moist
Chroma - 2 or 3 dry or moist
COMPETING SERIES: There are no other soils in this family. A closely related soil is the Sanyon(T) series. Sanyon(T) soils have lime throughout the profile.
GEOGRAPHIC SETTING: Priver soils are on broad terraces and ridges at elevations of 4500 to 5500 feet. They formed in alluvium, colluvium, and residuum from tuff. Slopes are 4 to 12 percent. The average annual precipitation ranges from 14 to 18 inches. The average annual air temperature is 41 to 45 degrees F. The frost free period is 80 to 100 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Kabear (T) and Staberg (T) soils. Kabear soils are on hillsides and are very deep. Staberg soils are on hillsides and are moderately deep.
DRAINAGE AND PERMEABILITY: Well drained. Slow runoff. Moderate permeability.
USE AND VEGETATION: Nonirrigated wheat and barley.
DISTRIBUTION AND EXTENT: Southeastern Idaho. The soils of this series are not extensive.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Portland, Oregon
SERIES PROPOSED: Franklin County, Idaho, 1989. The name is coined.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Mollic epipedon - The zone from the surface to 12 inches (Ap and Bw horizons)
Particle-size control section - The zone from 0 to 12 inches (Ap and Bw horizons. Where bedrock is between 14 and 20 inches, the particle-size control section if from 10 inches to bedrock.)