LOCATION KIGLAUIK                AK

Established Series
Rev. MHC/DLM
05/2022

KIGLAUIK SERIES

Depth class: moderately deep
Drainage class: somewhat poorly drained
Landforms: solifluction lobes on mountains
Parent material: silty eolian deposits over gravelly cryoturbate derived from schist
Elevation: 381 to 2228 feet
Slope: 5 to 45 percent
Annual precipitation: 22 to 27 inches
Annual temperature: 23 to 25 degrees F
Frost-free period: 60 to 90 days

TAXONOMIC CLASS:

TYPICAL PEDON: Kiglauik silt loam - on a 35 slope at willow/mixed grass-forb scrub. (All colors are for moist soil)

Oi--0 to 1 inch; very dark brown (10YR 2/2) slightly decomposed plant material; many very fine and fine and few medium roots; moderately acid (pH 5.9); clear wavy boundary.

A--1 to 4 inches; very dark brown (10YR 2/2) silt loam; very friable, nonsticky and nonplastic; many very fine and fine and few medium roots; 40 percent mica flakes in the fine earth fraction; moderately acid (pH 6.0); clear wavy boundary.

2ABw--4 to 17 inches; dark olive brown (2.5Y 3/3) very channery loam; friable, nonsticky and nonplastic; many very fine and fine and few medium roots; 45 percent channers, 10 percent flagstones; 50 percent mica flakes in the fine earth fraction; slightly acid (pH 6.3); gradual wavy boundary.

2C--17 to 32 inches; black (5Y 2.5/2) extremely channery loam; friable, nonsticky and nonplastic; few very fine and fine roots; 65 percent channers, 5 percent flagstones; 50 percent mica flakes in the fine earth fraction; slightly acid (pH 6.5); gradual smooth boundary.

2Cr--32 to 60 inches; fractured bedrock.

TYPE LOCATION: Steward River Training Site, Alaska; UTM coordinates: Zone 3, Easting 476699, Northing 7182169.

RANGE IN CHARACTERISTICS:
Soil moisture class: oxyaquic
Average annual soil temperature: about 31 degrees F.
Mean summer soil temperature: about 35 degrees F.
Depth to bedrock (paralithic): 25 to 40 inches
Depth to strongly contrasting textural stratification: 4 to 7 inches

Oi horizon:
Hue: 2.5YR to 10YR
Value: 2 to 3
Chroma: 1 t0 3
Organic matter content: 85 to 95 percent
Reaction: strongly acid to neutral

A horizon:
Hue: 2.5YR to 10YR
Value: 2 to 3
Chroma: 1 to 3
Texture: silt loam
Clay content: 0 to 10 percent
Silt content: 50 to 80 percent
Sand content: 15 to 50 percent
Organic matter content: 2 to 8 percent
Rock fragments: 0 to 5 percent strongly cemented channers, 0 to 2 percent strongly cemented flagstones
Reaction: strongly acid to slightly acid

2Bw horizon:
Hue: 10YR to 2.5Y
Value: 3 or 4
Chroma: 3 to 6
Texture: channery silt loam, very channery loam, very channery silt loam
Clay content: 0 to 10 percent
Silt content: 40 to 65 percent
Sand content: 25 to 50 percent
Organic matter content: 1 to 5 percent
Rock fragments: 25 to 50 percent strongly cemented channers, 0 to 20 percent strongly cemented flagstones
Reaction: strongly acid to slightly alkaline

2C horizon:
Hue: 2.5Y or 5Y
Chroma: 1 to 3
Texture: very channery loam, very channery silt loam, extremely channery silt loam
Clay content: 0 to 10 percent
Silt content: 40 to 65 percent
Sand content: 25 to 50 percent
Rock fragments: 25 to 50 percent strongly cemented channers, 0 to 20 percent strongly cemented flagstones
Reaction: moderately acid to slightly alkaline

COMPETING SERIES: There are no competing series in this classification.

GEOGRAPHIC SETTING:
Landforms: solifluction lobes on mountains
Parent material: silty eolian deposits over gravelly cryoturbate derived from schist
Elevation: 381 to 2228 feet
Slope: 5 to 45 percent
Annual precipitation: 22 to 27 inches
Annual temperature: 23 to 25 degrees F
Frost-free period: 60 to 90 days

GEOGRAPHICALLY ASSOCIATED SOILS: These include Boldrin, Sinuktuk and Tuksuk soils. Boldrin soils are very poorly drained, shallow to moderately deep to permafrost and occur on mountain footslopes and toeslopes. Sinuktuk soils are well drained, moderately deep to bedrock, and occur on mountains. Tuksuk soils are very poorly drained moderately deep to bedrock, and occur on mountains.

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

USE AND VEGETATION: Used for military use and wildlife habitat. Native vegetation is willow/mixed grass-forb scrub.

DISTRIBUTION AND EXTENT: MLRA 240, Nulato Hills-Southern Seward Peninsula Highlands, Alaska. The series is of small extent.

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

SERIES ESTABLISHED: Steward River Training Area, Alaska, 2005

REMARKS: Diagnostic features and horizons recognized in this profile include:
Lithic contact: 32 inches. (R horizon)
Mollic epipedon: 0.5 to 17 inches. (A and 2ABw horizons)
Loamy-skeletal particle size control section: 10 to 32 inches
Temperature regime: cryic

ADDITIONAL DATA:

The mineralogy class was changed from paramicaceous to micaceous in 07/2010 by the National Soil Survey Center on request of the responsible MLRA regional office. The change was necessary based on the eleventh edition of the Keys to Soil Taxonomy, 2010.

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National Cooperative Soil Survey
U.S.A.