LOCATION SCHLEYER AK

Established Series
Rev. MHC/DLM
02/2022

SCHLEYER SERIES

Depth class: very deep
Drainage class: somewhat excessively drained
Landforms: hills, mountains, outwash plains, stream terraces, and fan terraces on alluvial fans
Parent material: silty eolian deposits over gravelly outwash or eolian over alluvium
Elevation: 2,546 to 3,507 feet (776 to 1,069 m)
Slope: 0 to 65 percent
Annual precipitation: 22 to 35 inches (564 to 894 mm)
Annual temperature: 25 degrees F (-4 degrees C)
Frost-free period: 50 to 70 days

TAXONOMIC CLASS: Sandy-skeletal, mixed, subgelic Typic Haplogelods

TYPICAL PEDON: Schleyer silt loam - on a slope of 2 percent under shrub birch-dwarf ericaceous scrub mosaic. (All colors are for moist soil)

Oi--0 to 2 inches (0 to 5 cm); very dark brown (7.5YR 2.5/3) slightly decomposed plant material; many very fine, fine, medium, and coarse roots; extremely acid (pH 3.9); clear wavy boundary.

E/A--2 to 4 inches (5 to 10 cm); dark grayish brown (10YR 4/2) and very dark brown (10YR 2/2) silt loam; weak thin platy structure; very friable, nonsticky and nonplastic; many very fine, fine, medium, and few coarse roots; extremely acid (pH 4.4); clear wavy boundary.

Bs1--4 to 6 inches (10 to 15 cm); brown (7.5YR 4/4) and strong brown (7.5YR 4/6) silt loam; moderate very fine granular structure; very friable, nonsticky and nonplastic; common very fine and fine roots; strongly acid (pH 5.5); clear wavy boundary.

2Bs2--6 to 12 inches (15 to 30 cm); brown (7.5YR 4/4) cobbly loamy sand; weak coarse subangular blocky structure; friable, nonsticky and nonplastic; few very fine and fine roots; 20 percent gravel, 10 percent cobbles; strongly acid (pH 5.4); gradual wavy boundary.

2BC--12 to 21 inches (30 to 53 cm); dark yellowish brown (10YR 3/4) extremely cobbly coarse sand; single grain; loose, nonsticky and nonplastic; few very fine and fine roots; 30 percent gravel, 30 percent cobbles; moderately acid (pH 5.8); diffuse wavy boundary.

2C--21 to 60 inches (53 to 152 cm); dark brown (10YR 3/3) extremely cobbly coarse sand; single grain; loose, nonsticky and nonplastic; 30 percent gravel, 35 percent cobbles; moderately acid (pH 5.8).

TYPE LOCATION: Delta River Area, Alaska; in the Tangle Lakes area about 2.25 miles southwest of Round Tangle Lake; UTM coordinates: Zone 6, Easting 548575, Northing 6988874.

RANGE IN CHARACTERISTICS:

Soil moisture class: udic
Average annual soil temperature: 30 to 28 degrees F (-1.0 to -2.5 degrees C)
Mean summer soil temperature: 36 to 39 degrees F. (2 to 4 degrees C)
Depth to strongly contrasting textural stratification: 2 to 11 inches (5 to 28 cm)

Oi horizon:
Colorhue of 2.5YR to 10YR; value of 2 to 3; chroma of 1 or 2
Textureslightly decomposed plant material
Organic matter content65 to 90 percent
Reactionultra acid to very strongly acid

A and A part of E/A horizon:
Colorhue of 7.5YR or 10YR; chroma of 1 or 2
Clay content0 to 10 percent
Silt content55 to 75 percent
Sand content15 to 35 percent
Organic matter content2 to 4 percent
Rock fragments0 to 5 percent rounded gravel; 0 to 2 percent rounded cobbles
Reactionextremely acid to strongly acid

E and E part of E/A horizon:
Colorhue of 7.5YR or 10YR; value of 4 or 5
Clay content0 to 10 percent
Silt content55 to 75 percent
Sand content15 to 35 percent
Organic matter content2 to 4 percent
Rock fragments0 to 5 percent rounded gravel; 0 to 2 percent rounded cobbles
Reactionextremely acid to strongly acid

Bs horizon:
Colorhue of 5YR or 7.5YR; value of 3 or 4; chroma of 4 to 6
Clay content0 to 10 percent
Silt content55 to 75 percent
Sand content15 to 35 percent
Organic matter content2 to 4 percent
Rock fragments0 to 5 percent rounded gravel; 0 to 2 percent rounded cobbles
Reactionextremely acid to strongly acid

2Bs horizon:
Colorhue of 5YR or 7.5YR; value of 3 or 4; chroma of 4 to 6
Textureextremely cobbly coarse sand; very gravelly coarse sand; very gravelly loamy sand; extremely gravelly coarse sand
Clay content0 to 5 percent
Silt content0 to 15 percent
Sand content80 to 95 percent
Organic matter content0 to 2 percent
Rock fragments20 to 50 percent rounded very strongly cemented gravel; 10 to 35 percent rounded very strongly cemented cobbles
Reactionvery strongly acid to moderately acid

2BC horizon:
Colorvalue of 3 or 4; chroma of 3 to 6
Textureextremely cobbly coarse sand; very gravelly coarse sand; very gravelly loamy sand; extremely gravelly coarse sand
Clay content0 to 5 percent
Silt content0 to 15 percent
Sand content80 to 95 percent
Organic matter content0 to 2 percent
Rock fragments20 to 50 percent rounded very strongly cemented gravel; 10 to 35 percent rounded very strongly cemented cobbles
Reactionvery strongly acid to moderately acid

2C horizon:
Colorhue of variegated or 10YR; value of 3 or 4; chroma of 2 or 3
Textureextremely cobbly coarse sand; very gravelly coarse sand; very gravelly loamy sand; extremely gravelly coarse sand
Clay content0 to 5 percent
Silt content0 to 15 percent
Sand content80 to 95 percent
Rock fragments20 to 50 percent rounded very strongly cemented gravel; 10 to 35 percent rounded very strongly cemented cobbles
Reactionstrongly acid to moderately acid

COMPETING SERIES: This is the Imuruk series. Imuruk soils have a mean annual soil temperature less than 36 degrees F. (2 degrees C.).

GEOGRAPHIC SETTING:
Landforms: hills, mountains, outwash plains, stream terraces, and fan terraces on alluvial fans
Parent material: silty eolian deposits over gravelly outwash or eolian over alluvium
Elevation: 2,546 to 3,507 feet (776 to 1,069 m)
Slope: 0 to 65 percent
Annual precipitation: 22 to 35 inches (564 to 894 mm)
Annual temperature: 25 degrees F (-4 degrees C)
Frost-free period: 50 to 70 days

GEOGRAPHICALLY ASSOCIATED SOILS: These are the Broxson, Geist, Skarland, Slana, and Turbellina soils. Broxson soils are somewhat poorly drained, very deep, and occur on floodplains and alluvial fans. Geist and Skarland soils are somewhat excessively drained, very deep, and occur on hills and outwash plains. Slana soils are well drained, very deep, and occur on hills. Turbellina soils are very poorly drained, shallow to moderately deep to permafrost, and occur on hills and outwash plains.

DRAINAGE AND PERMEABILITY: Somewhat excessively drained, low to high runoff. Saturated hydraulic conductivity is moderately high to high in the loess mantle and high to very high in the gravelly outwash.

USE AND VEGETATION: Used for wildlife habitat and recreation. Native vegetation is shrub birch-dwarf ericaceous scrub mosaic.

DISTRIBUTION AND EXTENT: MLRA 228, Interior Alaska Mountains, Alaska. The series is of small extent.

SOIL SURVEY REGIONAL OFFICE (SSRO) RESPONSIBLE: WASILLA, ALASKA

SERIES ESTABLISHED: Delta River Area, Alaska, 2005

REMARKS: Diagnostic features and horizons recognized in this profile include:
Albic epipedon: 2 to 4 inches. (E/A horizon)
Spodic horizon: 4 to 12 inches. (Bs1 and 2Bs2 horizons)
Lithologic discontinuity: At the upper boundary of 2Bs2 horizon
Sandy-skeletal particle size control section: 10 to 40 inches below the mineral soil surface
Temperature regime: cryic
Temperature class: subgelic

ADDITIONAL DATA:

National Cooperative Soil Survey
U.S.A.