LOCATION MAGGOK AK
Established Series
SAS/MPS
05/2022
MAGGOK SERIES
Landscape--hills
Landform--ridges, hillslopes
Slope--0 to 30 percent
Parent material--eolian sands
Mean annual precipitation--about 320 mm
Mean annual air temperature--about -3 degrees C
Depth class--very deep
Drainage class--well drained
Soil moisture regime--udic
Soil temperature regime--cryic
Soil moisture subclass--typic
TAXONOMIC CLASS: Coarse-loamy, mixed, superactive Spodic Dystrocryepts
TYPICAL PEDON: Maggok silt loam on a west southwest facing convex, linear shoulder on a slope of 3 percent at an elevation of 83 m (The soil was moist throughout when described on August 25, 2019.)
Oe--0 to 12 cm; moderately decomposed plant material, dark grayish brown (10YR 4/2) dry, very dark brown (10YR 2/2) moist; common very fine, fine, and medium roots throughout; extremely acid (pH 3.8); abrupt smooth boundary
Ajj--12 to 15 cm; silt loam, brown (7.5YR 5/2) dry, dark brown (7.5YR 3/2) moist; weak, medium, granular structure; very friable, nonsticky, nonplastic; common very fine and fine roots throughout; extremely acid (pH 3.9); abrupt irregular boundary
Bhsjj--15 to 33 cm; loam, 70 percent dark reddish gray (5YR 4/2) and 30 percent dark gray (5YR 4/1) dry, 70 percent dark reddish brown (5YR 2.5/2) and 30 percent black (5YR 2.5/1) moist; weak, coarse, subangular blocky structure; friable, nonsticky, nonplastic; common very fine and fine roots throughout; very fine irregular and fine irregular pores; extremely acid (pH 4.4); very abrupt irregular boundary
Bw--33 to 115 cm; fine sandy loam, 70 percent brown (10YR 5/3) and 30 percent pale brown (10YR 6/3) dry, 70 percent dark brown (10YR 3/3) and 30 percent brown (10YR 4/3) moist; weak coarse subangular blocky structure; very friable, nonsticky, nonplastic; common very fine and few fine roots throughout; very fine tubular pores; faint strong brown (7.5YR 4/6) masses of oxidized iron; strongly acid (pH 5.5); clear smooth boundary
C--115 to 150 cm; fine sandy loam, light olive brown (2.5Y 5/3) dry, dark olive brown (2.5Y 3/3) moist; massive; friable, slightly sticky, nonplastic; common very fine roots throughout; very fine tubular pores; faint strong brown (7.5YR 4/6) masses of oxidized iron; strongly acid (pH 5.3)
TYPE LOCATION: Nome Census Area, Alaska, latitude 63.9187716 longitude -160.6450828 degrees, datum WGS84 (coordinates determined with a GPS unit)
RANGE IN CHARACTERISTICS:
Mean annual soil temperature--0 to 3 degrees C
Soil moisture control section--dry less than 45 consecutive days in June through October (udic soil moisture regime)
Thickness ochric epipedon--13 to 23 cm
Thickness of cambic horizon--88 to 130 cm
Particle Size Control Section:
*Clay--8 to 16 percent
Oe horizon
Thickness--10 to 15 cm
Ajj horizon
Hue--7.5YR or 10YR
Value--2 to 3 moist, 4 or 5 dry
Chroma--1 to 3
Fine-earth texture--silt loam, fine sandy loam
Clay--5 to 10 percent
Sand--35 to 75 percent
Organic carbon--5 to 12 percent
Reaction--3.5 to 4.4
Thickness--3 to 12 cm
Bhsjj horizon
Hue--5YR or 7.5YR
Value--2 to 3 moist, 4 or 5 dry
Chroma--1 to 3
Fine-earth texture--loam, fine sandy loam
Clay--5 to 10 percent
Sand--50 to 70 percent
Organic carbon--6 to 10 percent
Al + 1/2Fe--0.5 to 1 percent
Reaction--4.4 to 5.0
Thickness--10 to 25 cm
Bw horizon
Value--3 or 4 moist, 5 or 6 dry
Chroma--3 or 4
Clay--8 to 16 percent
Sand--65 to 80 percent
Organic carbon--1 to 3 percent
Reaction--5.0 to 5.5
Thickness--75 to 100 cm
C horizon
Value--3 to 5 moist, 5 to 7 dry
Fine-earth texture--fine sandy loam, loamy fine sand
Clay--14 to 20 percent
Sand--65 to 85 percent
Organic carbon--0.5 to 1.5 percent
Reaction-4.9 to 5.5
COMPETING SERIES:
*
Jenkins--moderately deep to bedrock, mountainsides and ridges, slope range is 4 to 40 percent
GEOGRAPHIC SETTING:
*Elevation--10 to 150 m
*Climate--warm, moist summers; cold, dry winters
*Mean annual precipitation--315 to 325 mm
*Mean annual air temperature-- -5 to -1 degrees C
*Frost-free period--55 to 90 days
GEOGRAPHICALLY ASSOCIATED SOILS:
*
Teacreek--loamy-skeletal particle-size class, aquic conditions and redoximorphic features present, hillslopes and mountain slopes
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--marsh Labrador tea, bog blueberry, dwarf birch, black crowberry, Bigelow's sedge, star reindeer lichen, reindeer lichen, greygreen reindeer lichen, snow lichen, cetraria lichen, lingonberry, Kenai birch, black spruce, white spruce, Siberian alder, woodland horsetail, bluejoint, beaverd spirea, red currant, Schreber's big red stem moss, splendid feather moss
DISTRIBUTION AND EXTENT: Nulato Hills-Southern Seward Peninsula Highlands, Alaska; MLRA 240; small 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 37 to 112 cm
*Ochric epipedon--zone from 0 to 15 cm
*Cryoturbation--zone from 12 to 33 cm
*Cambic horizon--zone from 12 to 115 cm
*Redoximorphic iron concentrations--zone from 33 to 150 cm
National Cooperative Soil Survey
U.S.A.