LOCATION KUZITRIN                AK

Established Series
Rev. MHC/DLM
05/2022

KUZITRIN SERIES

Depth class: very deep
Drainage class: somewhat poorly drained
Landforms: swales on mountains, swales on till plains
Parent material: silty eolian deposits over gravelly till
Elevation: 531 to 722 feet
Slope: 0 to 16 percent
Annual precipitation: 24.1 to 25.0 inches
Annual temperature: 24.8 degrees F
Frost-free period: 60 to 90 days

TAXONOMIC CLASS:

TYPICAL PEDON: Kuzitrin silt loam - on a slope of 10 percent under willow/mixed grass-forb scrub. (All colors are for moist soil)

Oe--0 to 1 inch; very dark brown (7.5YR 2.5/3) moderately decomposed plant material; many very fine and fine, common medium and few coarse roots; very strongly acid (pH 5.0); clear smooth boundary.

A--1 to 3 inches; dark brown (7.5YR 3/2) silt loam; very friable, nonsticky and nonplastic; many very fine and fine, common medium and few coarse roots; strongly acid (pH 5.1); clear wavy boundary.

2Bw--3 to 15 inches; olive brown (2.5Y 4/3) gravelly loam; friable, nonsticky and nonplastic; few very fine and fine roots; 20 percent gravel, 2 percent cobbles; moderately acid (pH 5.6); gradual wavy boundary.

2C2--15 to 28 inches; olive (5Y 4/3) very gravelly loam; friable, nonsticky and nonplastic; 20 percent gravel, 20 percent cobbles; moderately acid (pH 5.9); gradual wavy boundary.

2C3--28 to 60 inches; olive gray (5Y 5/2) very gravelly loam; friable, nonsticky and nonplastic; 20 percent gravel, 20 percent cobbles; moderately acid (pH 5.9).

TYPE LOCATION: Steward River Training Site, Alaska; UTM coordinates: Zone 3, Easting 478522, Northing 7184570

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 strongly contrasting textural stratification: 6 to 17 inches

Oe horizon:
Hue: 7.5YR or 10YR
Value: 2 to 3
Chroma: 2 to 3
Organic matter content: 65 to 90 percent
Reaction: very strongly acid to moderately acid

A horizon:
Hue: 7.5YR or 10YR
Value: 2 or 3
Chroma: 2 or 3
Texture: mucky silt loam, silt loam
Clay content: 0 to 10 percent
Silt content: 55 to 75 percent
Sand content: 15 to 35 percent
Organic matter content: 6 to 12 percent
Rock fragments: 0 to 5 percent subangular very strongly cemented gravel
Reaction: very strongly acid to moderately acid

2Bw horizon:
Hue: 10YR or 2.5Y
Value: 3 or 4
Chroma: 3 to 6
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: 4 to 10 percent
Rock fragments: 2 to 30 percent subangular strongly cemented gravel
Reaction: extremely acid to moderately acid

2C horizon:
Hue: 2.5Y or 5Y
Value: 4 or 5
Chroma: 1 to 3
Texture: very cobbly loam, very gravelly loam, very gravelly sandy loam
Clay content: 0 to 10 percent
Silt content: 15 to 50 percent
Sand content: 45 to 75 percent
Rock fragments: 15 to 30 percent subangular very strongly cemented gravel, 5 to 20 percent subangular very strongly cemented cobbles
Reaction: strongly acid to slightly acid

COMPETING SERIES: This is the Castnot series. Castnot series have spodic horizons.

GEOGRAPHIC SETTING:
Landforms: swales on mountains, swales on till plains
Parent material: silty eolian deposits over gravelly till
Elevation: 531 to 722 feet
Slope: 0 to 16 percent
Annual precipitation: 24.1 to 25.0 inches
Annual temperature: 24.8 degrees F
Frost-free period: 60 to 90 days

GEOGRAPHICALLY ASSOCIATED SOILS: These include Dirrant, Imuruk, and Tisuk soils. Dirrant soils are very poorly drained, shallow to permafrost, and occur on till plains. Imuruk soils are somewhat poorly drained, very deep, and occur on outwash plains. Tisuk soils are well drained, very deep, and occur on hills, mountains, and till plains.

DRAINAGE AND PERMEABILITY: Somewhat poorly drained, very high runoff. Saturated hydraulic conductivity is moderately high to high.

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 Site, Alaska, 2005

REMARKS: Diagnostic features and horizons recognized in this profile include:
Cambic horizon: 3 to 15 inches. (2Bw horizon)
Lithologic discontinuity: At the upper boundary of 2Bw horizon
Loamy-skeletal particle size control section: 10 to 40 inches
Temperature regime: cryic

ADDITIONAL DATA:

---

National Cooperative Soil Survey
U.S.A.