LOCATION KANGUQ                  AK

Established Series
NDP/MPS/SAS
05/2022

KANGUQ SERIES

Landscape--hills, mountains
Landform--hillslopes, mountain slopes
Slope--2 to 55 percent
Parent material--gravelly colluvium over gravelly residuum
Mean annual precipitation--about 450 mm
Mean annual air temperature--about -3.5 degrees C
Depth class--moderately deep
Drainage class--well drained
Soil moisture regime--udic
Soil temperature regime--cryic
Soil moisture subclass--typic

TAXONOMIC CLASS: Loamy-skeletal, isotic Typic Dystrocryepts

TYPICAL PEDON: Kanguq loam on an east facing linear, linear backslope, on a slope of 31 percent at an elevation of 471 m (The soil was moist throughout the profile when described on June 20, 2016.)

A--0 to 14 cm; channery loam, brown (10YR 5/3) dry, dark brown (10YR 3/3) moist; moderate fine granular structure; friable, nonsticky, nonplastic; common very fine, fine, medium, and very coarse roots throughout; 3 percent angular flagstones, 15 percent angular channers; extremely acid (pH 4.3); clear smooth boundary

Bw--14 to 31 cm; very channery sandy loam, brownish yellow (10YR 6/6) dry, dark yellowish brown (10YR 4/6) moist; moderate medium subangular blocky structure; friable, nonsticky, nonplastic; common very fine, fine, and coarse and many medium roots throughout; few fine irregular pores; 6 percent angular flagstones, 35 percent angular channers; strongly acid (pH 5.3); gradual wavy boundary

2C--31 to 80 cm; extremely channery sandy loam, very pale brown (10YR 7/4) dry, yellowish brown (10YR 5/4) moist; massive; friable, nonsticky, nonplastic; common very fine and fine roots throughout; 10 percent angular flagstones, 60 percent angular channers; strongly acid (pH 5.5); clear wavy boundary

2Cr--80 to 150 cm; bedrock

TYPE LOCATION: Nome Census Area, Alaska, latitude 63.5318000 longitude -160.8423300 degrees, datum WGS84 (Coordinates determined with a GPS unit)

RANGE IN CHARACTERISTICS:
Mean annual soil temperature-- -1 to 3 degrees C
Soil moisture control section--dry less than 45 consecutive days in June through October
Thickness of ochric epipedon--4 to 15 cm
Thickness of cambic horizon--15 to 55 cm

Particle Size Control Section:
*Clay--5 to 14 percent
*Total fragments--35 to 85 percent gravels, cobbles, channers, flagstones
*Sodium fluoride pH--8.4 to 11.6
*Ratio of 1500 kPa water to measured clay--0.6 to 6.0

A horizon
Value--2 to 4 moist, 4 to 6 dry
Chroma-2 or 3
Fine-earth texture--silt loam, loam
Clay--4 to 15 percent
Sand--20 to 50 percent
Organic carbon--5 to 12 percent
Total rock fragment content--0 to 25 percent
Total gravel content--0 to 15 percent
Total cobble content--0 to 12 percent
Total channer content--0 to 20 percent
Total flagstone content--0 to 10 percent
Reaction--4.2 to 5.2
Thickness--5 to 15 cm

Bw horizon
Hue--10YR or 7.5YR
Value--2 to 4 moist, 4 or 6 dry
Chroma--2 to 6
Fine-earth texture--silt loam, sandy loam, loam
Clay--5 to 16 percent
Sand--24 to 65 percent
Organic carbon--2 to 5 percent
Total rock fragment content--18 to 60 percent
Total gravel content--10 to 45 percent
Total channer content--0 to 55 percent
Total flagstone content--0 to 6 percent
Reaction--4.5 to 5.3
Thickness--15 to 55 cm

2C horizon
Hue--10YR or 2.5Y
Value--3 to 5 moist, 5 or 7 dry
Chroma--2 to 4
Fine-earth texture--sandy loam, silt loam
Clay--6 to 18 percent
Sand--25 to 70 percent
Organic carbon--0.5 to 2 percent
Total rock fragment content--45 to 85 percent
Total gravel content--0 to 55 percent
Total cobble content--0 to 35 percent
Total channer content--0 to 60 percent
Total flagstone content--0 to 10 percent
Reaction--4.8 to 5.9
Thickness--20 to 30 cm

2Cr horizon

COMPETING SERIES:
* Stuyahok--very deep, drift; rises on plains and hillslopes on hills
* Sharp--deep to lithic contact, residuum and colluvium; mountain slopes on mountains and hillslopes on hills
* Bensley--very deep, glacial till; sharp ridgetops and steeply sloping uplands
* Endlich--moderatly deep to lithic contact, slope alluvium or colluvium derived from granite, andesite, rhyolite, breccia, or tuff; hills, ridges and mountain slopes
* Fallriver--very deep, till and colluvium derived from granitic rocks, gneiss, and schist, albic horizon, 15 to 30 percent mica in particle-size control section; moraines and glaciated mountain slopes
* Henson--very deep, slope alluvium, alluvium, and colluvium derived from andesite, rhyolite, breccia, or tuff, 18 to 35 percent clay in particle-size control section; valley fills, mountain slopes, and alluvial fans

GEOGRAPHIC SETTING:
*Elevation--100 to 700 m
*Climate--warm, moist summers; cold, dry winters
*Mean annual precipitation--300 to 600 mm
*Mean annual air temperature-- -6 to -1 degrees C
*Frost-free period--45 to 80 days

GEOGRAPHICALLY ASSOCIATED SOILS:
* Iprugalet--Umbric epipedon; upper backslopes and shoulders of mountains
* Myoukchuk--fragmental particle size control section; north facing head slopes of mountains
*MountMcDonald--shallow to lithic contact; summits and shoulders of mountains
* Paugna--deep to paralithic contact; upper backslopes of mountains
* Northriver--very deep; backslopes of mountains and hills

DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
*Drainage class--well drained
*Saturation during normal years--none
*Saturated hydraulic conductivity (Ksat)--very high in the surface organic layer, high to moderately high throughout the rest of the profile

USE AND VEGETATION:
Use--wildlife habitat, recreation, subsistence
Potential native vegetation--Lichen, Moss, witch's hair lichen, alpine sweetgrass, dwarf birch, Bigelow's sedge, cetraria lichen, reindeer lichen, cup lichen, black crowberry, marsh Labrador tea, alpine azalea, arctic willow, skeletonleaf willow, snow lichen, bog blueberry, resin birch, bryocaulon lichen, greygreen reindeer lichen, eightpetal mountain-avens, wideleaf arctic woodrush, common woodrush, blackish oxytrope, white spruce, globe ball lichen, smallawned sedge, Kenai birch, abietinella moss, star reindeer lichen, Altai fescue, bog blueberry, cloudberry, lingonberry, stiff clubmoss, island cetraria lichen, Siberian alder, tealeaf willow, beaverd spirea, fireweed, bluejoint, netleaf willow

DISTRIBUTION AND EXTENT: Nulato Hills-Southern Seward Peninsula Highlands, Alaska; MLRA 240; moderate extent

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

SERIES ESTABLISHED: Nulato Hills BLM area, Nome Census Area, Alaska; 2021

REMARKS:
Diagnostic horizons and features recognized in this pedon
*Particle-size control section--zone from 25 to 80 cm
*Ochric epipedon--zone from 0 to 14 cm
*Cambic horizon--zone from 14 to 31 cm
*Lithological discontinuity--zone from 31 to 150 cm
*Paralithic contact--80 cm

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National Cooperative Soil Survey
U.S.A.