LOCATION JAYPE IDEstablished Series
TAXONOMIC CLASS: Fine-loamy, mixed, active, frigid Andic Hapludalfs
TYPICAL PEDON: Jaype ashy silt loam, forested on a 20 percent slope on a northerly aspect at an elevation of 3,150 feet. Colors are for dry soil unless otherwise noted.
Oi--0 to 1 inch; slightly decomposed leaves, needles, twigs and moss.
Oe--1 to 2 inches; moderately decomposed leaves, needles, twigs and moss.
A--2 to 5 inches; yellowish brown (10YR 5/4) ashy silt loam, dark brown (7.5YR 3/4) moist; weak very fine and fine granular structure; soft, very friable, slightly sticky and nonplastic; many very fine, common fine and medium and few coarse roots throughout; many very fine and common fine and medium irregular pores; 5 percent fine and medium, rounded iron-manganese concretions; moderately acid (pH 6.0); clear wavy boundary. (2 to 5 inches thick)
Bw--5 to 14 inches; light yellowish brown (10YR 6/4) ashy silt loam, dark brown (7.5YR 3/4) moist; weak very fine and fine subangular blocky structure; soft, very friable, slightly sticky and nonplastic; many very fine, common fine and few coarse and very coarse roots throughout; many very fine and few fine irregular pores; 5 percent fine, rounded iron-manganese concretions; moderately acid (pH 6.0); abrupt wavy boundary. (6 to 10 inches thick)
2Bt1--14 to 18 inches; light brown (7.5YR 6/3) loam, reddish brown (5YR 4/3) moist; weak fine and medium subangular blocky structure; slightly hard, friable, slightly sticky and slightly plastic; common very fine and few fine, medium and coarse roots throughout; many very fine and few fine tubular and few very fine irregular pores; few, faint clay films lining pores; moderately acid (pH 5.6); clear wavy boundary.
2Bt2--18 to 26 inches; very pale brown (10YR 7/3) loam, brown (7.5YR 4/4) moist; moderate medium and coarse subangular blocky structure; slightly hard, firm, slightly sticky and slightly plastic; common very fine and fine and few medium roots throughout; many very fine and common fine tubular pores; common faint clay films lining pores; 1 percent subrounded gravel; moderately acid (pH 5.8); abrupt wavy boundary. (Combined thickness of the 2Bt horizons is 6 to 35 inches)
3Btb--26 to 35 inches; very pale brown (10YR 8/3) and yellow (10YR 7/6) silty clay loam, pale yellow (2.5Y 7/3) and brown (7.5YR 5/4) moist; weak medium prismatic structure parting to strong fine and medium subangular blocky; very hard, firm, moderately sticky and moderately plastic; common very fine and fine and few medium roots throughout; common very fine tubular and few very fine irregular pores; many distinct clay films on faces of peds and in pores; strongly acid (pH 5.2); abrupt wavy boundary. (8 to 20 inches thick)
3B/C--35 to 60 inches; multicolored red (10R 5/6) to reddish yellow (7.5YR 6/8) stratified material with textures ranging from coarse sand to silty clay loam; red (10R 4/6) to strong brown (7.5YR 5/8) moist; single grain to weak coarse prismatic structure sometimes parting to strong fine and medium subangular blocky; loose to hard, loose to firm, nonsticky to moderately sticky and nonplastic to moderately plastic; common very fine and few fine and medium roots along faces of peds; common very fine tubular and few very fine irregular pores; many distinct clay films on faces of peds and in pores; 10 percent angular iron cemented fragments, 7 percent gravel size and 3 percent cobble size; very strongly acid to strongly acid (pH 4.6 to 5.4); abrupt wavy boundary. (0 to 25 inches thick)
3Btb'--60 to 72 inches; light brown (7.5YR 6/4) and pinkish white (7.5YR 8/2) clay; strong brown (7.5YR 5/6) and pinkish gray (5YR 7/2) moist; strong medium angular blocky structure; extremely hard, extremely firm, very sticky and very plastic; few very fine and fine roots along ped faces; few very fine tubular and few very fine and fine irregular pores; many distinct clay films on faces of peds and in pores; very strongly acid (pH 5.0); abrupt smooth boundary. (5 to 20 inches thick)
3C--72 to 82 inches; brownish yellow (10YR 6/6) sandy loam, yellowish brown (10YR 5/8) moist; massive; slightly hard, friable, slightly sticky and slightly plastic; few very fine irregular pores; 60 percent of the horizon is very weakly cemented by iron; very strongly acid (pH 4.6).
TYPE LOCATION: Clearwater County, Idaho. About 4 miles east of Grangemont, Idaho; about 2,400 feet north and 2,200 feet east of the southwest corner of sec. 21, T.37N., R.4E.; Latitude - 46 degrees, 32 minutes, 6 seconds North; Longitude - 115 degrees, 57 minutes, 35 seconds West; USGS Whiskey Butte Quadrangle.
RANGE IN CHARACTERISTICS:
Average annual soil temperature - 39 to 45 degrees F. Frigid temperature regime.
Soil moisture control section - usually moist year-round and not dry for 45 consecutive days between June and October. Udic moisture regime.
Thickness of volcanic ash mantle - 8 to 12 inches
Depth to slowly permeable layer - 33 to 67 inches
A horizon
Hue - 7.5YR or 10YR
Value - 4 or 5 dry, 2 or 3 moist
Chroma - 3 or 4 dry, 2 to 4 moist
Clay content - 5 to 10 percent
Reaction - moderately acid or slightly acid
Bulk density - 0.65 to 0.95 g/cc
Acid oxalate Al plus 1/2 Fe - 1.20 to 2.25 percent
Bw horizon
Hue - 7.5YR or 10YR
Value - 5 or 6 dry, 3 or 4 moist
Chroma - 4 to 6 dry or moist
Textures - ASHY-SIL, ASHY-L
Clay content - 5 to 10 percent
Reaction - moderately acid or slightly acid
Rock fragments - 0 to 5 percent fine gravel
Bulk density - 0.75 to 1.20 g/cc
Acid oxalate Al plus 1/2 Fe - 1.20 to 2.35 percent
2Bt horizons
Hue - 7.5YR to 2.5Y dry, 5YR to 2.5Y moist
Value - 5 to 8 dry, 4 to 7 moist
Chroma - 3 to 8 dry or moist
Textures - COSL, SL, L, CL, GR-SL, GR-SCL
Rock fragments - 0 to 25 percent gravel, 0 to 5 percent cobble
Clay content - 15 to 32 percent (averages greater than 18 percent)
Reaction - very strongly acid to moderately acid
3Btb, 3B/C, 3Btb' and 3C horizons
Hue - 10R to 5Y
Value - 5 to 8 dry, 4 to 7 moist
Chroma - 1 to 8 dry, 2 to 8 moist
Textures - COS, SL, L, SCL, CL, SICL, GR-SL, C, SIL, SIC, LOCS
Rock fragments - 0 to 15 percent gravel
Clay content - 5 to 60 percent
Reaction - extremely acid to moderately acid
COMPETING SERIES: These are the Hildebrand and Konkol series. The Hildebrand soils are moderately well drained with an apparent water table at 30 to 40 inches from January to May. Konkol soils do not have buried argillic horizons.
GEOGRAPHIC SETTING: Jaype soils are on undulating plateaus and hills at elevations of 1,600 to 3,550 feet. Slopes range from 5 to 45 percent. These soils formed in alluvium and lacustrine sediments thinly mantled by volcanic ash. The average annual air temperature is 38 to 44 degrees F. The average annual precipitation is 30 to 55 inches. The frost free season is 50 to 110 days (9 years in 10 to 1 year in 10 respectively).
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Grangemont, Kauder, Revling and Statemeadow series. Grangemont soils are on undulating plateaus and are fine-silty. Kauder soils are on undulating plateaus and have a fragipan. Revling soils are on undulating plateaus and have a thick ash cap. Statemeadow soils are on undulating plateaus and have a highly mixed ash cap.
DRAINAGE AND PERMEABILITY: Well drained; medium runoff; very slow permeability
USE AND VEGETATION: These soils are used primarily for timber production, livestock grazing, wildlife habitat and watershed. The natural vegetation is mainly western redcedar, grand fir, Douglas fir, western larch and western white pine with an understory of queencup beadlilly, goldthread, oneleaf foamflower, longtube twinflower, dampwoods blueberry and utah honeysuckle.
DISTRIBUTION AND EXTENT: North central Idaho; Jaype soils are not extensive.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Bozeman, Montana
SERIES ESTABLISHED: Clearwater County, Idaho, 2003.
REMARKS: Diagnostic horizons and other features recognized in this pedon are:
Ochric epipedon - The zone from 2 to 14 inches (A and Bw horizons).
Cambic horizon - The zone from 5 to 14 inches (Bw horizon).
Volcanic ash cap - The zone from 2 to 14 inches (A and Bw horizons).
Argillic horizon - The zone from 14 to 35 inches (2Bt1, 2Bt2 and 3Btb horizons).
Particle size control section - The zone from the top of the argillic horizon to 34 inches (2Bt1, 2Bt2 and part of the 3Btb horizons).
ADDITIONAL DATA: This series has laboratory data (this pedon) - Soil Survey Sample No. - S93ID-035-004 (project no. 94P 39, pedon no. 94P 189) Clearwater County, Idaho; By NSSL, Lincoln NE.
The ranges in values listed under the A and Bw horizons for Bulk density and Acid-oxalate extractable Al+1/2Fe are estimates only.