LOCATION MAQULLUQ                AK

Established Series
Rev. MJM/DLM
05/2022

MAQULLUQ SERIES

Depth class: very deep
Drainage class: well drained
Landforms: sand sheets and terraces
Parent material: coarse-loamy eolian deposits over eolian sands
Elevation: 50 to 75 m
Slope: 0 to 3 percent
Annual precipitation: 383 to 448 mm
Annual temperature: -2 to -1 degrees C
Frost-free period: 95 to 135 days

TAXONOMIC CLASS: Coarse-loamy over sandy or sandy-skeletal, mixed, superactive Typic Haplocryods

TYPICAL PEDON: Maqulluq - on a slope of 5 percent at 312 feet, (95 m) elevation under shrub birch/ericaceous shrub. (All colors are for moist soil)

Oi--0 to 5 inches, (0 to 13 cm); very dark brown (7.5YR 2.5/3) slightly decomposed plant material; many very fine and fine, common medium and few coarse roots; very strongly acid (pH 4.5); abrupt, wavy boundary. (1 to 5 inches thick, 3 to 13 cm)

E--5 to 8 inches, (13 to 20 cm); gray (10YR 6/1) and black (10YR 2/1) fine sandy loam; moderate, medium, subangular blocky structure; very friable, nonsticky and nonplastic; common very fine and fine and few medium roots; very strongly acid (pH 4.5); clear, wavy boundary. (1 to 3 inches thick, 3 to 8 cm)

Bs--8 to 12 inches, (20 to 30 cm); reddish black (10R 2.5/1) and very dark brown (7.5YR 2.5/3) fine sandy loam; moderate, coarse, subangular blocky structure; very friable, nonsticky and nonplastic; few very fine and fine and few medium roots; strongly acid (pH 5.4); gradual, wavy boundary. (2 to 6 inches thick, 2 to 15 cm)

BC--12 to 29 inches, (30 to 73 cm); dark yellowish brown (10YR 4/4) and olive brown (2.5Y 4/4) fine sandy loam; weak, medium, subangular blocky structure; very friable, nonsticky and nonplastic; few very fine and fine and few medium roots; moderately acid (pH 6.0); clear, smooth boundary. (16 to 26 inches thick, 40 to 65 cm)

2C--29 to 72 inches, (73 to 183 cm); very dark grayish brown (2.5Y 3/2) and olive brown (2.5Y 4/3) sand; single grain; loose, nonsticky and nonplastic; slightly acid (pH 6.2).

TYPE LOCATION: Western Interior Rivers Area, Alaska; UTM north 6846829 and UTM east 593265, zone 4.

RANGE IN CHARACTERISTICS:

Soil moisture regime: udic
Mean annual soil temperature: * to * degrees F, * C.
Depth to albic horizon: 1 to 5 inches, 2 to 13 cm
Depth to spodic horizon: 2 to 8 inches, 6 to 21 cm
Depth to sandy-skeletal material: 20 to 40 inches, 51 to 102 cm

O horizon:
Matrix color: hue of 7.5YR or 10YR; value of 2 or 5; chroma of 1 to 3
Texture: moderately decomposed plant material or slightly decomposed plant material
Reaction class: extremely acid or very strongly acid

E horizon:
Matrix color: hue of 7.5YR or 10YR; value of 4 to 6; chroma of 1 or 2
Texture: Hue of 7.5YR or 10YR; value of 4 to 6; chroma of 1 or 2
Reaction class: very strongly acid or strongly acid

Bs horizon:
Matrix color: hue of 10R to 7.5YR; value of 2 to 4; chroma of 1 to 4
Texture: fine sandy loam, silt loam, or very fine sandy loam
Reaction class: very strongly acid or strongly acid

BC horizon:
Matrix color: hue of 10YR to 5Y; value of 3 to 5; chroma of 1 to 4
Texture: fine sandy loam, silt loam, very fine sandy loam
Reaction class: very strongly acid to moderately acid

2C horizon:
Matrix color: hue of 2.5Y or 5Y; value of 3 to 5; chroma of 1 to 4
Texture: fine sand, gravelly loamy sand, loamy fine sand, or sand
Coarse fragments: 0 to 20 percent gravel
Reaction class: moderately acid or slightly acid

COMPETING SERIES: This is the Clarena series. Clarena series have stratified textures in the solum.

GEOGRAPHIC SETTING:
Depth class: very deep
Drainage class: well drained
Landforms: sand sheets and terraces
Parent material: coarse-loamy eolian deposits over eolian sands
Elevation: 50 to 75 m
Slope: 0 to 3 percent
Annual precipitation: 383 to 448 mm
Annual temperature: -2 to -1 degrees C
Frost-free period: 95 to 135 days

GEOGRAPHICALLY ASSOCIATED SOILS: These are the Ulesqiirluni and Ulet soils. Ulesqiirluni soils are deep silty soils on floodplains. Ulet soils have sandy strata and are on more frequently flooded positions.

DRAINAGE AND PERMEABILITY: Well drained, low runoff. Saturated hydraulic conductivity is moderately high in the solumn and high or very in the substratum.

USE AND VEGETATION: Used for wildlife habitat and water shed. Native vegetation is shrub birch and ericaceous shrub.

DISTRIBUTION AND EXTENT: MLRA 230, Yukon-Kuskokwim Highlands Alaska. The series is of small 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:
albic epipedon: 5 to 8 inches, 13 to 20 cm. (E horizon)
Spodoc horizon: 8 to 12 inches, 20 to 30 cm. (Bs horizon)
Coarse-loamy upper part of the particle size control section: 10 to 29 inches 25 to 73 cm, sandy or sandy-skeletal lower part of the particle size control section: 29 to 40 inches, 72 to 102 cm
Temperature regime: cryic
Moisture regime: udic

ADDITIONAL DATA:

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National Cooperative Soil Survey
U.S.A.