LOCATION YEDLICK WAEstablished Series
The Yedlick series consists of very deep, well drained soils formed in residuum and colluvium from basalt with a thin mantle of volcanic ash. Yedlick soils are on mountains. Slopes are 8 to 45 percent. The mean annual precipitation is about 32 inches and the mean annual temperature is about 46 degrees F.
TAXONOMIC CLASS: Loamy-skeletal, isotic, mesic Andic Dystroxerepts
TYPICAL PEDON: Yedlick stony ashy sandy loam - forested, on a 25 percent southwest-facing backslope at an elevation of 1,540 feet. (Colors are for dry soil unless otherwise noted. All textures are apparent field textures.)
Oi--0 to 0.5 inches; needles, leaves, and twigs.
Oa--0.5 to 1 inch; decomposed organic material.
A--1 to 6 inches; reddish gray (5YR 5/2) stony ashy sandy loam, dark reddish brown (5YR 3/2) moist; weak very fine granular structure; soft, very friable, slightly sticky, nonplastic and weakly smeary; many very fine and fine roots; many very fine irregular pores; 15 percent gravel and 10 percent stones; slightly acid (pH 6.4); clear wavy boundary. (3 to 6 inches thick)
AB--6 to 14 inches; light reddish brown (5YR 6/4) gravelly ashy sandy loam, dark reddish brown (5YR 3/4) moist; weak very fine subangular blocky structure parting to weak very fine granular; slightly hard, friable, slightly sticky, nonplastic and weakly smeary; many very fine and fine roots; many very fine irregular and common very fine tubular pores; 10 percent gravel and 5 percent cobbles; slightly acid (pH 6.3); gradual wavy boundary. (3 to 10 inches thick)
2Bw1--14 to 29 inches; light brown (7.5YR 6/4) very gravelly loam, dark reddish brown (5YR 3/4) moist; weak very fine and fine subangular blocky structure; slightly hard, friable, slightly sticky and nonplastic; common very fine and fine roots; many very fine irregular and many very fine tubular pores; 30 percent gravel and 10 percent cobbles; slightly acid (pH 6.2); gradual wavy boundary. (12 to 18 inches thick)
2Bw2--29 to 51 inches; light brown (7.5YR 6/4) very gravelly loam, dark brown (7.5YR 3/4) moist; moderate very fine and fine subangular blocky structure; slightly hard, friable, slightly sticky and slightly plastic; common very fine roots; many very fine irregular and common very fine tubular pores; 40 percent gravel and 10 percent cobbles; slightly acid (pH 6.2); gradual wavy boundary. (17 to 27 inches thick)
2Bw3--51 to 61 inches; light brown (7.5YR 6/4) very gravelly loam, dark brown (7.5YR 3/4) moist; moderate fine and medium subangular blocky structure; slightly hard, friable, slightly sticky and slightly plastic; common very fine roots; common very fine irregular and few very fine tubular pores; 30 percent gravel and 5 percent cobbles; slightly acid (pH 6.3).
TYPE LOCATION: Klickitat County, Washington; about 6 miles northwest of Glenwood; 1,000 feet south and 1,500 feet east of the northwest corner, section 3, T. 6 N., R. 13 E. Latitude 46 degrees 02 minutes 30 seconds N. and Longitude 121 degrees 10 minutes 05 seconds W.
RANGE IN CHARACTERISTICS: The mean annual soil temperature is 47 to 49 degrees F. The soil moisture control section is dry in all parts for 60 to 75 consecutive days within the 4 months that follow the summer solstice in 6 or more years out of 10. Volcanic ash influence is 7 to 14 inches thick and has an estimated moist bulk density of 0.65 to 0.90 g/cc, volcanic glass content of 30 to 60 percent, acid oxalate extractable aluminum plus one-half iron of 1.0 to 2.0 percent, phosphate retention of 50 to 75 percent, and 15 bar water retention of 8 to 12 percent. The particle-size control section averages 35 to 50 percent rock fragments.
The A and AB horizons have hue of 5YR or 7.5YR and chroma of 2 to 4 dry or moist.
The 2Bw horizon has hue of 5YR or 7.5YR, value of 5 or 6 dry, 3 or 4 moist and chroma of 4 to 6 dry or moist. Rock fragments range from 35 to 50 percent gravel and 0 to 10 percent cobbles. Texture is very gravelly sandy loam or very gravelly loam.
COMPETING SERIES: These are the
Lydon (T),
Lyre,
McElroy,
Ovall,
Schneider, and
Siouxon series.
The
Lotuspoint and
Terbies soils are similar series.
Lydon soils - 20 to 40 inches to a lithic contact (andesite); MAST of 52 to 59 degrees F.; dry for more
than 90 consecutive days
Lyre soils - 20 to 40 inches to a sand or loamy sand glacial outwash discontinuity with 50 to 70 percent
rock fragments; dry 45 to 60 consecutive days;
McElroy soils - dry 45 to 60 consecutive days; umbric epipedon 10 to 13 inches thick; 5 to 30 percent
glass within the ash influenced zone
Ovall soils - 20 to 40 inches to a lithic contact (andesite); MAST of 52 to 54 degrees F.
Schneider soils - 40 to greater than 60 inches to a lithic contact (basalt); dry 45 to 60 consecutive days;
umbric epipedon 20 to 30 inches thick
Siouxon soils - 40 to 60 inches to a lithic contact (andesite); dry 45 to 60 consecutive days; umbric
epipedon 10 to 20 inches thick
Lotuspoint soils - mixed mineralogy; 35 to 65 percent glass in the volcanic influenced zone; dry for 45 to
60 consecutive days
Terbies soils - Haploxerepts classification; 40 to 60 inches to a lithic contact (sandstone); dry 45 to 60
consecutive days
GEOGRAPHIC SETTING: Yedlick soils are on mountains at elevations of 1,100 to 2,500 feet. Slopes are 8 to 45 percent. Yedlick soils formed in residuum and colluvium from basalt with a thin mantle of volcanic ash. Summers are warm and dry, winters are cool and moist, with snow cover from December through April. The mean annual precipitation is 30 to 35 inches. The average January temperature is 25 degrees F. and the average July temperature is 63 degrees F. The mean annual temperature is 45 to 48 degrees F. The frost-free season is 90 to 110 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Kaiders, Leidl, Pinbit, Trelk, and Tumac soils. Kaiders soils lack a mantle of volcanic ash and are on mountains and foothills. Leidl soils have a lithic contact at 20 to 40 inches and are on plateaus and canyon side slopes. Pinbit soils have 5 to 20 percent rock fragments in the control section, have volcanic ash influence for more than 60 inches and are on terraces. Trelk soils are fine-loamy, have an argillic horizon and are on terraces. Tumac soils have an umbric epipedon 10 to 14 inches thick, are ashy-skeletal and are on mountain side slopes.
DRAINAGE AND PERMEABILITY: Well drained; medium to rapid runoff; moderate permeability.
USE AND VEGETATION: These soils are used for timber production, livestock grazing, and wildlife habitat. Native vegetation is mainly ponderosa pine, Douglas-fir and Oregon white oak, with an understory of pinegrass, elk sedge, snowbrush ceanothus, Oregon-grape, common snowberry, redstem ceanothus, lupine, antelope bitterbrush, and western hazel.
DISTRIBUTION AND EXTENT: East slopes of the Cascade Mountains in western Klickitat and Yakima Counties, Washington. MLRA 6. The series is of small extent.
MLRA OFFICE RESPONSIBLE: Portland, Oregon
SERIES ESTABLISHED: Klickitat County, Washington, 2003.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon - the zone from 1 to 6 inches
Cambic horizon - the zone from 6 to 61 inches
Particle-size control section - the zone from 11 to 41 inches averageing 42 percent rock fragments
Andic feature - the zone from 1 to 14 inches
Depth to diagnostic horizons and features are measured from the top of the first mineral layer.
Base saturation (NH4OAc) is assumed to be less than 60 percent throughout the upper 30 inches.