LOCATION PELUK                   AK

Established Series
Rev. MHC/DLM
02/2022

PELUK SERIES

Depth class: shallow to permafrost
Drainage class: well drained
Landforms: peat plateaus on mountains
Parent material: mossy organic material and/or woody organic material
Elevation: 381 to 846 feet
Slope: 0 to 12 percent
Annual precipitation: 22 to 29 inches
Annual temperature: 23 to 25 degrees F
Frost-free period: 60 to 90 days

TAXONOMIC CLASS: Euic, subgelic Typic Folistels

TYPICAL PEDON: Peluk peat - on a slope of 3 percent under shrub birch/sedge scrub. (All colors are for moist soil)

Oi--0 to 5 inches; dark reddish brown (5YR 3/3) peat; many very fine and fine, common medium and few coarse roots; very strongly acid (pH 4.8); clear wavy boundary.

Oe--5 to 16 inches; very dark brown (7.5YR 2.5/3) mucky peat; many very fine and fine and few medium roots; very strongly acid (pH 4.8); abrupt smooth boundary.

Cgf/Oejjf--16 to 60 inches; 80 percent dark olive gray (5Y 3/2) and 20 percent very dark brown (7.5YR 2.5/3) permanently frozen loam; 10 percent gravel; moderately acid (pH 5.6).

TYPE LOCATION: UTM coordinates: Zone 3, Easting 480498, Northing 7188389

RANGE IN CHARACTERISTICS:
Soil moisture class: udic
Average annual soil temperature: about 31 degrees F.
Mean summer soil temperature: about 35 degrees F.
Depth to permafrost: 15 to 18 inches

Oi and Oe horizon:
Hue: 2.5YR to 10YR
Value: 2 to 4
Chroma: 2 to 6
Texture: peat, mucky peat
Organic matter content: 65 to 90 percent
Reaction: ultra acid to strongly acid

Cgf/Oejjf horizon:
Cg part:
Hue: 2.5Y or 5Y
Value: 3 or 4
Chroma: 1 or 2
Texture: gravelly loam, gravelly sandy loam, loam
Clay content: 0 to 10 percent
Silt content: 15 to 50 percent
Sand content: 30 to 75 percent
Organic matter content: 8 to 20 percent
Rock fragments: 2 to 30 percent strongly cemented channers
Reaction: extremely acid to moderately acid

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

GEOGRAPHIC SETTING:
Landforms: peat plateaus on mountains
Parent material: mossy organic material and/or woody organic material
Elevation: 381 to 846 feet
Slope: 0 to 12 percent
Annual precipitation: 22 to 29 inches
Annual temperature: 23 to 25 degrees F
Frost-free period: 60 to 90 days

GEOGRAPHICALLY ASSOCIATED SOILS: These include Boldrin, Cassiterite, Kiglauik soils. Boldrin soils are very poorly drained, shallow to moderately deep, and occur on mountain toeslopes and footslopes. Cassiterite soils are somewhat poorly drained, very deep, and occur on flood plains and flood plains on mountains. Kiglauik soils are somewhat poorly drained, moderately deep to bedrock, and occur on mountains.

DRAINAGE AND PERMEABILITY: Well drained, very high runoff. Saturated hydraulic conductivity is high to very high above the permafrost and very low in the in the permafrost.

USE AND VEGETATION: Used for military use and wildlife habitat. Native vegetation is shrub birch/sedge scrub.

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

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

SERIES ESTABLISHED: Steward River Training Site, Alaska, 2005

REMARKS: Diagnostic features and horizons recognized in this profile include:
Depth to permafrost: 16 to 60 inches. (Cg/Oejjf horizon)
Histic epipedon: 0 to 16 inches. (Oi and Oe horizons)
Soil reaction class of pH 4.5 (0.01MCaCl2)
Temperature regime: pergelic

ADDITIONAL DATA:

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National Cooperative Soil Survey
U.S.A.