LOCATION TALIKRIDGE AK

Established Series
CBB
11/2024

TALIKRIDGE SERIES

Depth class: very deep
Drainage class: well drained
Parent material: loess over gravelly residuum weathered from calcareous sandstone
Landscape: mountains
Landform: ridges
Slopes: 2 to 12 percent
Mean annual precipitation: about 450 mm (18 in)
Mean annual air temperature: about -4 degrees C. (25 degrees F.)
Frost-free period: 70 to 85 days

TAXONOMIC CLASS: Loamy-skeletal, mixed, superactive Typic Haplocryolls

TYPICAL PEDON: Talikridge extremely channery silt loam in a boreal ericaceous scrub and white spruce community on a convex, convex mountain ridge on a slope of 0 percent at an elevation of 284 m (932 ft)

Oe--0 to 7 cm (0 to 3 in); moderately decomposed plant material, black (7.5YR 2.5/1) moist, dark gray (7.5YR 4/1) dry; moderate very fine granular structure; common very fine, fine, and few medium roots throughout; very strongly acid (pH 4.9); abrupt wavy boundary. (6 to 10 cm, 2 to 4 in thick)

Oa--7 to 16 cm (3 to 6 in); highly decomposed plant material, black (7.5YR 2.5/1) moist, dark gray (7.5YR 4/1) dry; moderate fine granular structure; common very fine and few fine roots throughout; very strongly acid (pH 4.5); abrupt irregular boundary. (8 to 10 cm, 3 to 4 in thick)

A--16 to 34 cm (6 to 13 in); extremely channery silt loam, very dark gray (10YR 3/1) moist, gray (10YR 5/1) dry; strong fine granular structure; friable, slightly hard, slightly sticky, nonplastic; nonsmeary; few very fine and fine roots throughout; very fine, fine, and medium interstitial and very fine and fine tubular pores; 2 percent strong brown (7.5YR 5/6) and light olive brown (2.5Y 5/3) carbonate coats on bottom of rock fragments; 50 percent channers and 20 percent flagstones; slightly acid (pH 6.3); abrupt wavy boundary. (10 to 20 cm, 4 to 8 in thick)

2A--34 to 43 cm (13 to 17 in); sandy loam, very dark gray (10YR 3/1) moist, gray (10YR 5/1) dry; strong medium granular structure; friable, slightly hard, nonsticky, nonplastic; nonsmeary; few very fine and fine roots throughout; very fine and fine tubular; 2 percent strong brown (7.5YR 5/6) and light olive brown (2.5Y 5/3) carbonate coats on bottom of rock fragments; 10 percent channers; neutral (pH 7.2); clear wavy boundary. (5 to 15 cm, 2 to 6 in thick)

2Bt--43 to 80 cm (17 to 32 in); very flaggy fine sandy loam, dark grayish brown (2.5Y 4/2) moist, light brownish gray (2.5Y 6/2) dry; 1 percent fine prominent dark yellowish brown (10YR 4/6) and 10 percent medium faint gray (2.5Y 5/1) mottles; moderate medium subangular blocky parts to moderate medium granular structure; friable, slightly hard, nonsticky, moderately plastic; nonsmeary; few very fine roots top of horizon; very fine and fine interstitial and very fine and fine tubular pores; 2 percent strong brown (7.5YR 5/6) and light olive brown (2.5Y 5/3) carbonate coats on bottom of rock fragments; 10 percent dark grayish brown (2.5Y 4/2) clay films on vertical faces of peds; 25 percent channers and 25 percent flagstones; slightly alkaline (pH 7.4); gradual smooth boundary. (20 to 40 cm, 8 to 16 in thick)

2Bw--80 to 120 cm (32 to 47 in); extremely flaggy sandy loam, olive (5Y 4/3) moist, pale olive (5Y 6/3) dry; weak medium subangular blocky structure; friable, slightly hard, nonsticky, nonplastic; nonsmeary; very fine and fine interstitial and very fine and fine tubular pores; 2 percent carbonate coats on bottom of rock fragments; 25 percent channers, 40 percent flagstones; slightly alkaline (pH 7.5); clear smooth boundary. (15 to 45 cm, 6 to 18 in thick)

2C--120 to 160 cm (47 to 63 in); flagstones; very fine, fine, and medium interstitial pores; 2 percent carbonate coats on bottom of rock fragments; 98 percent flagstones; very abrupt irregular boundary. (36 to 45 cm, 14 to 18 in thick)

2R--160 to 185 cm (63 to 73 in); strongly coherent to indurated calcareous sandstone bedrock. (15 to 25 cm, 6 to 10 in thick)

TYPE LOCATION: Nulato Hills - Continental Divide and Blackburn Hills Soil Survey Area, Alaska; latitude 65 degrees 13 minutes 9.60 seconds north, longitude 160 degrees 28 minutes 47.69 seconds west, datum WGS84, UTM north 7233710.75 and UTM east 430789.88, zone 4W, datum WGS84.

RANGE IN CHARACTERISTICS:

Soil moisture regime: udic
Soil temperature regime: cryic
Mean annual soil temperature: 0 to 3 degrees C. (32 to 37 degrees F.)
Thickness of organic material: 14 to 20 cm (6 to 8 in)
Thickness of folistic epipedon: 15 to 20 cm (6 to 8 in)
Thickness of mollic epipedon: 18 to 35 cm (7 to 14 in)
Depth to lithologic discontinuity: 24 to 40 cm (9 to 16 in)
Depth to lithic contact: 100 to 185 cm (39 to 73 in)

Oe and Oa horizons:
Hue: 7.5YR, 5YR, or 10YR
Value: 2 to 3 moist, 4 to 5 dry
Chroma: 1 to 2
Texture: moderately or highly decomposed plant material
Organic matter: 60 to 90 percent
Reaction class: extremely acid to strongly acid (pH 3.5 to 5.5)

A horizon:
Hue: 10YR or 7.5YR
Value: 2 to 3 moist, 4 to 5 dry
Chroma: 1 to 2
Texture: extremely channery silt loam
Sand: 10 to 30 percent
Silt: 60 to 80 percent
Clay: 2 to 10 percent
Rock fragments: 60 to 80 percent
Channers: 40 to 60 percent
Flagstones: 10 to 30 percent
Organic matter: 2 to 6 percent
Reaction class: moderately acid to slightly acid (pH 5.6 to 6.5)

2A horizon:
Hue: 10YR or 2.5Y
Value: 2 to 3 moist, 4 to 5 dry
Chroma: 1 to 2
Texture: sandy loam or fine sandy loam
Sand: 43 to 75 percent
Silt: 15 to 50 percent
Clay: 2 to 10 percent
Rock fragments: 0 to 14 percent
Channers: 0 to 14 percent
Organic matter: 2 to 6 percent
Reaction class: slightly acid to neutral (pH 6.1 to 7.3)

2Bt horizon:
Hue: 2.5Y or 5Y
Value: 3 to 5 moist, 5 to 7 dry
Chroma: 2 to 3
Texture: very flaggy fine sandy loam or sandy loam
Sand: 52 to 75 percent
Silt: 9 to 40 percent
Clay: 8 to 16 percent
Rock fragments: 35 to 59 percent
Channers: 15 to 30 percent
Flagstones: 20 to 35 percent
Organic matter: 0.5 to 2 percent
Reaction class: neutral to slightly alkaline (pH 6.6 to 7.8)

2Bw horizon:
Hue: 5Y or 2.5Y
Value: 3 to 5 moist, 5 to 7 dry
Chroma: 3 to 4
Texture: extremely flaggy sandy loam or fine sandy loam
Sand: 43 to 75 percent
Silt: 13 to 50 percent
Clay: 4 to 12 percent
Rock fragments: 60 to 75 percent
Channers: 20 to 30 percent
Flagstones: 30 to 50 percent
Organic matter: 0.5 to 2 percent
Reaction class: neutral to slightly alkaline (pH 6.6 to 7.8)

2C horizon:
Texture: flagstones
Rock fragments: 90 to 100 percent
Flagstones: 90 to 100 percent

2R horizon
Strongly coherent to indurated calcareous sandstone bedrock.

COMPETING SERIES: These are the Broad Canyon (UT, CO, & ID), Kamack, Longabaugh (UT), Midfork (WY & UT), Piegan (MT), and Sawpit (CO).
Broad Canyon soils have a mean annual soil temperature of 2 to 8 degrees C. (36 to 46 degrees F.) and occur on lateral moraines and mountainsides.
Kamack soils do not have an O horizon and occur on dissected mountainsides.
Longabaugh soils have secondary calcium carbonates within 24 to 64 cm (9 to 25 in) of the surface and occur on mountain slopes.
Midfork soils have very stony loam surface textures and occur on fan aprons and mountain slopes.
Piegan soils have extremely cobbly sandy loam surface textures and occur on nivation hollows on ridges, mountain slopes, and glacial-valley walls.
Sawpit soils occur at elevations between 3050 to 3475 m (10,000 to 11,400 ft) on mesa summits, alluvial fans, and along drainageways.

GEOGRAPHIC SETTING:
Elevation: 250 to 450 meters (820 to 1475 feet)
Parent material: loess over gravelly residuum weathered from calcareous sandstone
Landform: ridges
Slopes: 2 to 12 percent
Mean annual precipitation: 300 to 500 mm (12 to 20 in)
Mean annual air temperature: -6 to -2 degrees C. (21 to 28 degrees F.)
Frost free period: 70 to 85 days

GEOGRAPHICALLY ASSOCIATED SOILS: These are the Uvluutit, Littlekalusukcreek, and Tui soils.
Uvluutit soils have an ochric epipedon, free carbonates in the substratum, and occur on backslope positions of hillslope landforms.
Littlekalusukcreek soils have a histic epipedon, are poorly drained, and occur on similar landforms on summit and shoulder positions.
Tui soils have an ochric epipedon, a cambic horizon at depths between 6 to 44 cm (2 to 17 in), and occur on mountain slopes.

DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Drainage class: well drained
Saturated Hydraulic Conductivity: very high in the Oe, Oa, and 2C horizons and moderately high in the A, 2A, 2Bt, and 2Bw horizons
Permeability: rapid to very rapid in the Oe and Oa horizons; moderate in the A, 2A, 2Bt, and 2Bw horizons; and very rapid in the 2C horizon
Runoff: low or medium

USE AND VEGETATION:
Use: wildlife habitat, recreation, and subsistence
Native vegetation: ceratodon moss, reindeer lichen, black crowberry, greygreen reindeer lichen, dwarf birch, alpine azalea, white spruce, cup lichen, bog blueberry, grayleaf willow, tealeaf willow, juniper polytrichum moss, bluejoint, star reindeer lichen, tufted hairgrass, field horsetial, lingonberry, Flavocetraria culcullata, marsh Labrador tea, red fruit bearberry, and netleaf willow.

DISTRIBUTION AND EXTENT: MLRA 240, Nulato Hills-Southern Seward Peninsula Highlands. The series is of moderate extent.

SOIL SURVEY REGIONAL OFFICE (SSRO) RESPONSIBLE: Wasilla, Alaska

SERIES ESTABLISHED: Nulato Hills - Continental Divide and Blackburn Hills Soil Survey, Alaska, 2024.

REMARKS: Diagnostic features and horizons recognized in this profile include:

Particle-size control section: 41 to 116 cm (16 to 46 in)

Folistic epipedon: 0 to 16 cm (0 to 6 in) (Oe and Oa horizons)

Mollic epipedon: 16 to 43 cm (6 to 17 in) (A and 2A horizons)

Lithologic discontinuity: 34 to 185 cm (13 to 73 in) (2A, 2Bt, 2Bw, 2C, and 2R horizons)

Lithic contact: 160 to 185 cm (63 to 73 in) (2R horizon)

ADDITIONAL DATA:

User pedon ID: 2023AK180164

National Cooperative Soil Survey
U.S.A.