LOCATION TEGGIUQ                 AK

Established Series
Rev. MJM/DLM
02/2022

TEGGIUQ SERIES

Depth class: moderately deep or deep to permafrost
Drainage class: poorly drained
Landforms: mountains
Parent material: mossy organic material over coarse-silty cryoturbate over permanently frozen coarse-silty eolian deposits
Slope: 3 to 25 percent
Annual precipitation: 15 to 26 inches, 393 to 657 mm
Annual temperature: 28 to 30 degrees F.,-2 to -1 C
Frost-free period: 95 to 135 days

TAXONOMIC CLASS:

TYPICAL PEDON: Teggiuq - on a slope of 21 percent at 30 feet, 30 m elevation under Black spruce and moss. (All colors are for moist soil)

O--0 to 9 inches (0 to 22 cm); olive yellow (2.5Y 6/6) and black (7.5YR 2.5/1) peat; many very fine and fine, common medium and common coarse roots; extremely acid (pH 4.2); clear, smooth boundary.

Oa--9 to 10 inches (22 to 25 cm); black (7.5YR 2.5/1) muck; common very fine and fine, common medium and common coarse roots; extremely acid (pH 4.2); clear, wavy boundary (Combined O horizon thickness 8 to 18 inches thick, 20 to 45 cm)

Ajj--10 to 22 inches (25 to 55 cm); olive (5Y 4/3) and olive brown (2.5Y 4/4) silt loam; massive; firm, nonsticky and nonplastic; few very fine and fine and common medium roots; 3 mm strong brown (7.5YR 4/6) high chroma redox concentrations (approximately 5 percent of horizon); moderately acid (pH 5.8); clear, broken boundary. (4 to 12 inches thick, 10 to 30 cm)

Bjj--22 to 30 inches (55 to 77 cm); olive brown (2.5Y 4/4) and very dark grayish brown (2.5Y 3/2) silt loam; massive; firm, nonsticky and nonplastic; few very fine and fine roots; 2 mm grayish brown (2.5Y 5/2) low chroma redox depletions (approximately 7 percent of horizon); slightly acid (pH 6.2); clear, wavy boundary. (12 to 20 inches thick, 30 to 50 cm)

Cg--30 to 46 inches (77 to 118 cm); gray (5Y 5/1) and olive brown (2.5Y 4/4) silt loam; few very fine and fine roots; 3 mm strong brown (7.5YR 4/6) high chroma relict high chroma mottles (approximately 5 percent of horizon); slightly acid; diffuse, broken boundary (10 to 20 inches thick, 25 to 50 cm)

Cgf--46 to 60 inches (118 to 152 cm); gray (5Y 5/1) and olive brown (2.5Y 4/4) permanently frozen silt loam; few very fine and fine roots; 3 mm strong brown (7.5YR 4/6) high chroma relict high chroma mottles (approximately 5 percent of horizon); slightly acid; diffuse, broken boundary.

TYPE LOCATION: Western Interior Rivers Area, Alaska; Holy Cross, Alaska; UTM north 6882464 and UTM east 444487, zone 4.

RANGE IN CHARACTERISTICS:

Soil moisture regime: aquic
Mean annual soil temperature: about 29 degrees F, about -1.5 C.
Depth to redoximorphic concentrations: 10 to 16 inches, 25 to 40 cm
Depth to redoximorphic depletions: 10 to 16 inches, 25 to 40 cm
Depth to permafrost: 30 to 47 inches, 75 to 120 cm
Depth to cryoturbation: 10 to 20 inches, 25 to 50 cm

O horizons:
Matrix color: hue of 7.5YR to 2.5Y; value of 2 to 6; chroma of 1 to 6
Texture: peat or mucky peat
Reaction class: extremely acid or strongly acid

Ajj horizon:
Matrix color: hue of 7.5YR to 5Y; value of 2 to 4; chroma of 2 to 4
Redoximorphic concentrations hue of 7.5YR or 10YR; value of 3 to 5; chroma of 4 to 6; redoximorphic depletions: hue of 10YR to 5Y; value of 4 or 5; chroma of 1 or 2
Texture: silt, silt loam, or very fine sandy loam
Reaction class: strongly acid to slightly acid

Bjj horizon:
Matrix color: hue of 10YR to 5Y; value of 3 or 4; chroma of 3 ro 4
Redoximorphic concentrations hue of 7.5YR or 10YR; value of 3 to 5; chroma of 4 to 6; redoximorphic depletions: hue of 10YR to 5Y; value of 4 or 5; chroma of 1 or 2
Texture: mucky silt loam, silt, or silt loam
Reaction class: strongly acid or slightly acid

Cg horizon:
Matrix color: hue of 10YR to 5; value of 4 or 5; chroma of 1 to 3
Redoximorphic concentrations: hue of 7.5YR or 10YR; value of 3 or 4; chroma of 4 to 6
Texture: silt or silt loam
Reaction class: strongly acid to slightly acid

Cf horizon:
Matrix color: hue of 2.5Y or 5Y; value of 4 or 5; chroma of 1 to 3
Texture: permanently frozen silt loam or permanently frozen material
Reaction class: moderately acid to neutral

COMPETING SERIES: This is the Tanacross series. Tanacross series have visible mica in the solum.

GEOGRAPHIC SETTING:
Depth class: moderately deep or deep
Drainage class: poorly drained
Landforms: mountains
Parent material: mossy organic material over coarse-silty cryoturbate over permanently frozen coarse-silty eolian deposits
Slope: 3 to 25 percent
Annual precipitation: 15 to 26 inches, 393 to 657 mm
Annual temperature: 28 to 30 degrees F.,-2 to -1 C
Frost-free period: 95 to 135 days

GEOGRAPHICALLY ASSOCIATED SOILS: These include Kaviriuq, Nunaniq, and Sleetmute soils. Kaviriuq soils are podzolized and occur on convexities and at locally higher landscape positions, Nunaniq soils are well drained soils formed in loess at lower relative positions. Sleetmute soils are gravelly and occur on shoulders and noseslopes.

DRAINAGE AND PERMEABILITY: Poorly drained and high runoff. Saturated hydraulic conductivity is high in the organic layers, moderately high in the solum and very low in the permafrost.

USE AND VEGETATION: Used for Wildlife habitat and watershed. Native vegetation is Black spruce and moss.

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:
Depth to permafrost: 46 to 60 inches, 118 to 152 cm. (cf horizon)
Histic epipedon: 0 to 10 inches, 0 to 15 cm. (Oi and Oe horizons)
Cryoturbation: 10 to 30 inches, 25 to 77 cm. (Ajj and Bjj horizons)
Redoximorphic features: 10 to 46 inches, 25 to 118 cm. (Ajj, Bjj, and Cg horizons)
Coarse-loamy particle-size control section: 10 to 40 inches, 25 to 102 cm below the O horizons
Temperature regime: cryic
Moisture regime: aquic

ADDITIONAL DATA:

---

National Cooperative Soil Survey
U.S.A.