LOCATION GLENROSE                WA

Established Series
Rev. MLR/RL/RJS
10/2016

GLENROSE SERIES

The Glenrose series consists of very deep, well drained soils formed in residuum and colluvium weathered from saprolitic gneiss, quartzite, Latah formation and glacial till, mixed with loess and volcanic ash in the upper part. Glenrose soils are on foothills, outwash plains and till plains. Slope ranges from 0 to 30 percent. The average annual precipitation is about 21 inches and the average annual air temperature is about 46 degrees F.

TAXONOMIC CLASS: Fine-loamy, isotic, mesic Vitrandic Argixerolls

TYPICAL PEDON: Glenrose ashy silt loam - cultivated; on a northeast-facing slope of 10 percent at 2,590 feet elevation. When described on July 31, 2000 the soil was dry to 24 inches and slightly moist below that depth. (Colors are for dry soil unless otherwise noted. All textures are apparent field textures.)

Ap--0 to 8 inches; brown (10YR 5/3) ashy silt loam, very dark grayish brown (10YR 3/2) moist; weak fine and medium subangular blocky structure; slightly hard, friable, slightly sticky and slightly plastic; common very fine and fine roots; common very fine and fine tubular and irregular pores; moderately acid (pH 6.0); clear smooth boundary. (6 to 10 inches thick)

AB--8 to 14 inches; brown (10YR 5/3) ashy silt loam, dark brown (10YR 3/3) moist; weak coarse subangular blocky structure; hard, friable, slightly sticky and slightly plastic; common very fine and fine roots; common very fine and fine tubular and irregular pores; slightly acid (pH 6.2); clear wavy boundary. (4 to 10 inches thick)

Bw--14 to 19 inches; yellowish brown (10YR 5/4) silt loam, brown (10YR 4/3) moist; weak medium and coarse subangular blocky structure; slightly hard, friable, slightly sticky and slightly plastic; few very fine and fine roots; common very fine and fine tubular pores; 15 percent distinct clay films on faces of peds; slightly acid (pH 6.2); clear wavy boundary. (0 to 10 inches thick)

Bt/E--19 to 24 inches; (Bt part) 85 percent dark yellowish brown (10YR 4/4) silty clay loam, brown (10YR 4/3) moist; moderate medium subangular blocky structure; hard, firm, slightly sticky and moderately plastic; 60 percent distinct clay films on faces of peds; (E part) 15 percent pale brown (10YR 6/3) silty clay loam, brown (10YR 5/3) moist; moderate medium subangular blocky structure; hard, firm, slightly sticky and moderately plastic; few very fine roots; common very fine tubular pores; 2 percent fine gravel; neutral (pH 6.8); clear wavy boundary. (0 to 5 inches thick)

Bt1--24 to 32 inches; yellowish brown (10YR 5/4) silty clay loam, brown (10YR 4/3) moist; moderate medium subangular blocky structure; hard, firm, moderately sticky and moderately plastic; few very fine roots throughout; common very fine tubular pores; 15 percent distinct silt coats on faces of peds and 50 percent distinct clay films on faces of peds; 5 percent gravel; neutral (pH 6.8); gradual wavy boundary.

Bt2--32 to 41 inches; yellowish brown (10YR 5/6) clay loam, dark yellowish brown (10YR 4/4) moist; moderate medium subangular blocky structure; hard, firm, moderately sticky and moderately plastic; few very fine roots throughout; common very fine tubular pores; 10 percent distinct silt coats on faces of peds and 30 percent distinct clay films on faces of peds; 5 percent gravel; neutral (pH 6.9); gradual wavy boundary.

Bt3--41 to 60 inches; yellowish brown (10YR 5/6) clay loam, dark yellowish brown (10YR 4/4) moist; moderate medium subangular blocky structure; hard, firm, moderately sticky and moderately plastic; common very fine tubular and irregular pores; 25 percent faint clay films on faces of peds; 10 percent gravel; neutral (pH 7.0). (Combined thickness of the Bt horizon is 26 to 50 inches)

TYPE LOCATION: Spokane County, Washington; About 2 miles east of Mica, WA; About 610 feet east and 905 feet south of the northwest corner of Section 19, Township 24N, Range 45E; USGS Freeman topographic quadrangle; (Latitude 47 degrees, 33 minutes, 45.86 seconds N. and Longitude 117 degrees, 10 minutes, 17.91 seconds W.) 487088 meters Easting and 5267716 meters Northing, UTM, Zone 11, NAD 83.

RANGE IN CHARACTERISTICS:
Average annual soil temperature - 47 to 50 degrees F.
Moisture control section - dry in all parts between a depth of 4 to 12 inches for 60 to 75 days following the summer solstice, July to September, moist October through June.
Clay content - 18 to 34 percent in the particle size control section
Sand content - 10 to 25 percent medium, coarse, and very coarse sand
Thickness of the mollic epipedon - 10 to 20 inches
Coarse fragments - 5 to 30 percent in the particle-size control section
Volcanic ash influence - 10 to 20 inches
Properties of the volcanic ash influenced layers:
Volcanic glass content in the 0.02 to 2 mm fraction - 5 to 20 percent
Acid-oxalate extractable Al plus 1/2 Fe - 0.4 to 1.0 percent
Moist bulk density - 1.15 to 1.35 g/cc
15 bar water retention - 5 to 10 percent for air dried samples
Surface stones - 0 to 5 percent

Ap horizon (or BA horizon when present)
Value - 3 to 5 dry, 2 or 3 moist
Chroma - 1 to 3, dry or moist
Gravel content - 0 to 20 percent
Cobble content - 0 to 15 percent
Reaction - moderately acid or slightly acid

AB horizon
Value - 4 or 5 dry, 3 or 4 moist
Chroma - 3 or 4, dry or moist
Texture - ashy silt loam or ashy loam
Gravel content - 0 to 15 percent
Reaction - moderately acid to neutral

Bw horizon
Value 5 to 6 dry, 3 to 5 moist
Chroma - 3 or 4, dry or moist
Texture - silt loam or loam
Gravel content - 0 to 15 percent fine gravel
Reaction - slightly acid or neutral

E horizon - present in some pedons

Bt/E horizons
Hue - 10YR, 7.5YR, or 5YR
Value - 4 to 7 dry, 3 to 5 moist
Chroma 3 to 5, dry or moist
Texture - silty clay loam, silt loam, or loam
Gravel content - 0 to 15 percent
Reaction - slightly acid or neutral

Bt horizons
Hue - 10YR or 2.5Y
Value - 4 to 7 dry, 3 to 5 moist
Chroma 3 to 6, dry or moist
Texture - silt loam, silty clay loam, clay loam, or loam with total rock fragment content of 0 to 35 percent
Clay content - 22 to 28 percent in the upper part and 28 to 34 percent in the lower part
Gravel content - 0 to 20 percent in the upper part and 0 to 30 percent in the lower part
Cobble content - 0 to 5 percent in the lower part
Reaction - slightly acid to neutral

COMPETING SERIES: These are the Dragoon and Gibbs series. Dragoon soils are 20 to 40 inches to a paralithic contact. Gibbs soils are 20 to 40 inches deep to a lithic contact.

GEOGRAPHIC SETTING: Glenrose soils are on convex to linear backslopes of foothills at elevations of 1,300 to 2,900 feet. Slopes are 0 to 30 percent. These soils formed in residuum and colluvium weathered from saprolitic gneiss, quartzite, Latah Formation, and glacial till, mixed with loess and volcanic ash in the upper part. The climate is characterized by warm, dry summers and cool, moist winters. The mean annual precipitation is 17 to 25 inches. The mean January temperature is 24 degrees F, mean July temperature is 67 degrees F, and the mean annual air temperature is 45 to 48 degrees F. The frost-free season is 100 to 130 days.

GEOGRAPHICALLY ASSOCIATED SOILS: These are the Dearyton, Drsicoll, Kramerhill, Lakestarr, Larkin, Santa, Southwick, and Spokane series. Dearyton soils are on similar foothills and Driscoll soils are on loess hills and both are fine in the particle-size control section. Kramerhill soils are hills and mountains and are deep to a paralithic contact. Lakestarr soils are on foothills and are deep to a densic layer and have thin mantle of volcanic ash. Larkin and Southwick soils are on loess hills and are fine-silty. Santa soils are on foothills and are moderately deep to a fragipan. Spokane soils are hills and mountains are moderately deep to a paralithic contact.

DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY: Well drained; moderately high saturated hydraulic conductivity.

USE AND VEGETATION: These soils are used for non-irrigated crop production, livestock grazing, hay and pasture, timber production, homesites, and wildlife habitat. Potential natural vegetation is ponderosa pine with scattered Douglas-fir, with an understory of common snowberry, dwarf rose, common chokecherry, blue wildrye, sweetroot, Saskatoon serviceberry, pinegrass, Lewis' mockorange, arrowleaf balsamroot, and spreading dogbane.

DISTRIBUTION AND EXTENT: Northeastern and north central Washington and possibly north Idaho. MLRA 9 and 43A. Series is of small extent.

MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Bozeman, Montana

SERIES ESTABLISHED: Spokane County, Washington, 1961.

REMARKS: Diagnostic horizons and features recognized in this pedon are:
Mollic epipedon - the zone from 0 to 14 inches (Ap and AB horizons)
Argillic horizon - the zone from 19 to 60 inches (Bt/E, Bt1, Bt2, and Bt3)
Particle-size control section - 19 to 39 inches (Bt/E and part of the Bt2 horizon)
Vitrandic subgroup feature - the zone from 0 to 14 inches (Ap and AB horizons)
Particle-size control section - the zone from 19 to 39 inches (Bt/E, Bt1 and part of the Bt2 horizons)

The type location for Glenrose has been moved to better reflect a modal site after revisiting the original type location in Spokane County. Use of Glenrose will need investigation in the Colville Indian Reservation survey, especially with respect to glacial till parent material (less than 1,000 acres).

Glenrose soils should be further investigated to determine typical mineralogy (isotic vs. mixed).

---

National Cooperative Soil Survey
U.S.A.