LOCATION NUNANIQ                 AK

Established Series
Rev. MM/DLM
05/2022

NUNANIQ SERIES

Depth class: very deep
Drainage class: well drained
Parent material: loess
Landform: Lower mountain slopes, hills, and plains
Slopes: 1 to 40 percent
Mean annual precipitation: 15 to 26 inches, 393 to 657 mm
Mean annual temperature: 28 to 30 degrees F., -2 to -1 C.
Frost-free season: 95 to 135 days

TAXONOMIC CLASS: Coarse-silty, mixed, superactive Typic Haplocryepts

TYPICAL PEDON: Nunaniq silt loam - on a southeast facing slope of 8 percent at 316 feet, 96 m elevation under boreal forest. (All colors are for moist soil)

Oe--0 to 2 inches (0-5 cm); very dark gray (5YR 3/1) moderately decomposed plant material; many very fine and fine, common medium and few coarse roots; extremely acid (pH 4.4),; clear smooth boundary. (1 to 6 inches thick, 3 to 15 cm)

A--2 to 7 inches (5 to 17 cm); very dark brown (10YR 2/2), and dark yellowish brown (10YR 4/4) silt loam; weak, medium, granular structure; very friable, nonsticky and nonplastic; common very fine and fine, common medium and few coarse roots; moderately acid (pH 5.6); clear, smooth boundary. (1 to 5 inches thick, 3 to 12 cm)

Bw--7 to 14 inches (17 to 35 cm); olive brown (2.5Y 4/3) and dark yellowish brown (10YR 4/4)silt loam; moderate, medium, subangular blocky structure; very friable, nonsticky and nonplastic; common very fine and fine and common medium roots; moderately acid (pH 5.6); clear smooth boundary. (4 to 22 inches thick, 11 to 55 cm)

BC--14 to 35 inches (35 to 88 cm); olive brown (2.5Y 4/3) and olive gray (5Y 5/2) silt loam; weak, medium, granular structure; very friable, nonsticky and nonplastic; common very fine and fine and common medium roots; slightly acid (pH 6.2); gradual, smooth boundary. (6 to 28 inches thick, 15 to 70 cm)

C--35 to 60 inches (88 to 152 cm); olive gray (5Y 5/2), and brown (7.5YR 4/4) silt loam; moderate medium platy structure; friable, nonsticky and nonplastic; slightly acid (pH 6.4)

TYPE LOCATION: Western Interior Area, Alaska; New York Creek area, Alaska; north 6841839 and UTM east 540077, zone 4.

RANGE IN CHARACTERISTICS:

Soil moisture regime: udic
Depth to albic horizon: 1 to 6 inches, 6 to 16 cm
Depth to cambic horizon: 5 to 15 inches, 7 to 43 cm
Depth to redoximorphic concentrations: > 30 inches, > 75 cm

O horizon:
Matrix color: hue of 7.5YR to 10YR; value of 2 or 3; chroma of 1 to 4
Reaction class: extremely acid to strongly acid

A horizon:
Matrix color: value of 2 or 3; chroma of 1 to 4
Texture: silt loam or silt
Reaction class: very strongly acid to moderately acid

Bw horizon:
Matrix color: hue of 10YR or 2.5Y; value of 3 or 4; chroma of 3 or 4
Texture: silt loam or silt
Reaction class: strongly acid to slightly acid

BC horizon:
Matrix color: hue of 10YR to 2.5Y; value of 3 or 4; chroma of 3 or 4
Texture: silt loam or silt
Reaction class: strongly acid to slightly acid

C horizon:
Matrix color: hue of 2.5Y or 5Y; value of 4 or 5; chroma of 2 to 4
Redoximorphic concentrations: hue of 7.5YR or 10YR; value of 3 or 4; chroma of 4 to 6;
Texture: silt loam or silt
Reaction class: moderately acid or slightly acid

COMPETING SERIES: These are the Bodenburg, Fairbanks, Fairless, Koyukuk, and Toghotthele soils. Bodenburg and Fairless soils have sandy substratums. Fairbanks and Koyukuk soils are presumed to have cooler summer soil temperatures. Toghotthele soils which has a fine sand substratum.

GEOGRAPHIC SETTING:
Depth class: very deep
Drainage class: well drained
Parent material: loess
Landform: lower mountain slopes, hills, and plains
Slopes: 3 to 45 percent
Mean annual precipitation: 15 to 26 inches, 393 to 657 mm
Mean annual temperature: 28 to 30 degrees F., -2 to -1 C.
Frost-free season: 95 to 135 days

GEOGRAPHICALLY ASSOCIATED SOILS: These include Teggiuq soils on north-facing and shaded slopes. Kaviriuq soils on forested, low elevation convex shoulders and summits, and Sleetmute soils on steep convex nose slopes and ridges.

DRAINAGE AND PERMEABILITY: Well drained, medium runoff, saturated hydraulic conductivity is moderately high to high.

USE AND VEGETATION: Used for watershed. Native vegetation is paper birch with scattered white spruce and understory horsetail, ferns, grass and scattered shrubs.

DISTRIBUTION AND EXTENT: MLRA 230, Yukon-Kuskokwim Highlands, Alaska. The series is of moderate extent.

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

SERIES ESTABLISHED: Western Interior Rivers Area, Alaska, 2007

REMARKS: Diagnostic features and horizons recognized in this profile include:
Ochric horizon: 2 to 7 inches, 5 to 17 cm. (A horizon)
Cambic horizon: 7 to 14 inches, 17 to 35 cm. (Bw horizon)
Coarse-silty, particle-size control section: 10 to 40 inches, 25 to 100 cm, below the O horizon
Temperature regime: cryic
Moisture regime: Udic

ADDITIONAL DATA:

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National Cooperative Soil Survey
U.S.A.