LOCATION SHARATIN                AK

Established Series
Rev. CAP
04/2024

SHARATIN SERIES

Depth class: very deep
Drainage class: well drained
Parent material: organic material over sandy and loamy volcanic ash over medial silty volcanic ash over gravelly loamy till
Landscape: Islands
Landform: till and outwash plains and hills
Slopes: 0 to 20 percent
Mean annual precipitation: about 700 mm (28 in)
Mean annual temperature: about 4 degrees C (39 degrees F.)
Frost-free season: 20 to 50 days

TAXONOMIC CLASS: Medial over sandy or sandy-skeletal, amorphic over mixed Typic Haplocryands

TYPICAL PEDON: Sharatin ashy sandy loam- on a mixed grass herbaceous and forested plain at elevation 27 meters (90 feet). (All colors are for moist soil.)

Oe--0 to 8 centimeters (0 to 3 inches); black (7.5YR 2.5/1), very dark gray (7.5YR 3/1), dry; moderately decomposed plant material; soft, very friable, nonsticky, nonplastic; many very fine, fine, common medium and common coarse roots throughout; moderately acid (pH 5.7); clear wavy boundary. (3 to 15 cm, 1 to 6 in thick)

C1--8 to 11 centimeters (3 to 4 inches); brown (7.5YR 5/2), pinkish gray (7.5YR 6/2), dry; ashy sandy loam; weak fine granular structure; soft, very friable, nonsticky, nonplastic; common very fine, fine, medium, and common coarse roots throughout; strongly acid (pH 5.4); gradual smooth boundary.

C2--11 to 24 centimeters (4 to 9 inches); pink (7.5YR 7/3) ashy loamy coarse sand; single grain; loose, nonsticky, nonplastic; common very fine, fine, and common medium roots throughout; slightly acid (pH 6.1); abrupt wavy boundary. (Combined thickness is 8 to 30 cm, 3 to 12 in thick)

2A1--24 to 27 centimeters (9 to 11 inches); black (7.5YR 2.5/1) medial silt loam; weak fine granular structure; soft, friable, nonsticky, nonplastic; common very fine, fine, medium roots throughout; strongly acid (pH 5.4); gradual smooth boundary.

2A2--27 to 34 centimeters (11 to 13 inches); very dark brown (7.5YR 2.5/2) medial silt loam; moderate fine granular structure; soft, very friable, nonsticky, nonplastic; common fine and medium roots throughout; moderately acid (pH 5.6); clear wavy boundary. (Combined thickness is 5 to 20 cm, 2 to 8 in thick)

2Bw--34 to 65 centimeters (13 to 26 inches); dark brown (7.5YR 3/4) medial silt loam; weak fine subangular blocky structure; slightly hard, friable, nonsticky, nonplastic; common fine roots throughout; 5 percent gravel; strongly acid (pH 5.5); abrupt wavy boundary. (20 to 41 cm, 8 to 16 in thick)

3C1--65 to 80 centimeters (26 to 32 inches); dark brown (7.5YR 3/4) very gravelly sandy loam; massive; slightly hard, friable, slightly sticky, nonplastic; 50 percent gravel; strongly acid (pH 5.5); clear wavy boundary. (10 to 25 cm, 4 to 10 in thick)

3C2--80 to 200 centimeters (31.5 to 78.7 inches); dark yellowish brown (10YR 3/4) extremely gravelly loamy sand; single grain; loose, nonsticky, nonplastic; 70 percent gravel and 5 percent cobble; moderately acid (pH 5.6).

TYPE LOCATION: Kodiak Archipelago Soil Survey Area, Alaska; Latitude 57 degrees 2minutes 29.14 seconds and Longitude 152 degrees 20 minutes 42.14 seconds west, UTM north 6368570.14 and UTM east 539296.98, zone 5, Datum WGS84.

RANGE IN CHARACTERISTICS:

Soil moisture regime: udic
Mean annual soil temperature: 1.6 to 3.3 degrees C. (34.8 to 37.9 degrees F.)
Thickness of organic material: 2 to 15 cm (1 to 6 in)
Thickness of the 1912 volcanic ash: 5 to 25 cm (2 to 10 in)
Depth to andic properties: 7 to 40 cm (3 to 16 in)
Depth to cambic horizon: 15 to 60 cm (6 to 16 in)
Depth to gravelly till: 45 to 135 cm (17 to 53 in)

Oa, Oe, Oi horizon:
Hue: 7.5YR to 10YR
Value: 2 to 5
Chroma: 1 to 4
Texture: slightly, moderately, or highly decomposed plant material
Organic matter: 60 to 90 percent
Reaction class: extremely acid to moderately acid (pH 3.5 to 6.0)

C horizon:
Hue: 7.5YR to 10YR
Value: 2 to 5
Chroma: 1 to 4
Texture: (ashy and glassy) sand, loamy sand, loamy fine sand, very fine sandy loam, sandy loam, or silt loam
Sand: 30 to 90 percent
Clay: 2 to 8 percent
Silt: 10 to 55 percent
Reaction class: extremely acid to moderately acid (pH 3.5 to 6.0)

A horizon:
Hue: 7.5YR to 10YR
Value: 2 to 5
Chroma: 1 to 3
Texture: medial silt loam, silt, loam, and very fine sandy loam or their gravelly analogues
Rock fragments: 0 to 14 percent
Silt: 40 to 90 percent
Clay: 2 to 10 percent
Reaction class: extremely acid to moderately acid (pH 3.5 to 6.0)

Bw horizon:
Hue: 7.5YR to 10YR
Value: 2 to 5
Chroma: 3 to 6
Texture: (medial) silt loam, silt, loam, or very fine sandy loam, or their gravelly analogues
Silt: 40 to 90 percent
Clay: 2 to 12 percent
Rock fragments: 0 to 30 percent
Reaction class: extremely acid to moderately acid (pH 3.5 to 6.0)

2C horizon:
Hue: 7.5YR, 10YR, or 2.5Y
Value: 3 to 6
Chroma: 1 to 4
Texture: sandy loam, fine sandy loam, coarse sandy loam, loamy sand, loamy coarse sand, or their very or extremely gravelly analogues
Sand: 50 to 85 percent
Clay: 2 to 10 percent
Rock fragments: 35 to 85 percent
Reaction Class: extremely acid to slightly acid (pH 3.5 to 6.5)

COMPETING SERIES: This is the Rocky (AK) series.
Rocky soils lack recent volcanic ashy surface horizons and occur on similar landform positions.

GEOGRAPHIC SETTING:
Elevation: 5 to 365 meters (15 to 1200 feet)
Parent material: moderately decomposed herbaceous organic material over sandy and loamy volcanic ash over medial silty volcanic ash over gravelly sandy and loamy outwash
Landform: plains and hills
Slope: 0 to 20 percent
Mean annual precipitation: 600 to 2500 mm (39 to 98 in)
Mean annual temperature: 0 to 6 degrees C. (32 to 43 degrees F.)
Frost free period: 20 to 50 days

GEOGRAPHICALLY ASSOCIATED SOILS: These include Akalura, Aleneva, Koniag, Luchek, Narrow Cape, Rezanof, Sulua, Terror Lake, Tonki, Tungalara, and Wineskey series.
Akalura soils occur on mountain, hill, or ridge on flanks, backslopes, footslopes and toeslopes.
Aleneva soils have aquic features at depths greater between 41 to 100 cm (16 to 40 in) and occur on drainageways and depressions.
Luchek soils have thick organic material over skeletal glacial till and occur in drainageways and depressions.
Narrow Cape soils lack sandy-skeletal substratum and occur on similar landform positions.
Rezanof soils have mollic epipedons and occur on similar landform positions.
Sulua soils have thick organic material over skeletal glacial till and occur on drainageways and depressions.
Terror Lake soils have aquic features at depths greater between 41 to 100 cm (16 to 40 in) and occur on drainageways and depressions.
Tonki soils have aquic features within 0 to 25 cm (0 to 10 in) and occur on drainageways and depressions.
Tungalara soils have skeletal particle-sized control sections and occur on similar positions.

DRAINAGE AND PERMEABILITY:
Drainage class: well drained
Saturated Hydraulic Conductivity: very high in the Oe horizon, moderately high to very high in the C horizon, moderately high or high in the A, Bw, 2C1 horizons, and very high in the 2C2.
Permeability: rapid or very rapid in the Oe horizon, moderate to very rapid in the C horizon, moderate to rapid in the A, Bw, 2C1, and rapid or rapid in the 2C2 horizons.
Runoff: low to medium.

USE AND VEGETATION:
Used for water shed. Native vegetation is Sitka Spruce, Forb meadow and Grass.

DISTRIBUTION AND EXTENT: MLRA 220 Alexander Archipelago-Gulf of Alaska Coast and 225 Southern Alaska Peninsula Mountains.
Extent: moderate.

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

SERIES ESTABLISHED: Kodiak Archipelago Soil Survey, Alaska, 2024.

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

Organic material: 0 to 8 cm (0 to 3 in) (moderately decomposed hemic plant material) (Oe horizon)

1912 volcanic glass (ashy) material: 8 to 24 cm (3 to 10 in) (C horizon)

Andic soil properties: 11 to 65 cm (4 to 26 in) (2A, 2Bw horizons)

Cambic horizon: 34 to 65 cm (13 to 26 in) (Bw horizon)

Lithological discontinuity: 65 to 200 cm (26 to 79 in)

ADDITIONAL DATA:

User pedon Id: 08SS 02705

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National Cooperative Soil Survey
U.S.A.