LOCATION KIZHUYAK AK
Established Series
Rev. CAP
04/2024
KIZHUYAK SERIES
Depth class: Very deep
Drainage class: Well drained
Parent material: moderately decomposed herbaceous organic material over sandy and loamy volcanic ash over medial silty volcanic ash over gravelly loamy till
Landform: flood plains and drainageways
Slopes: 0 to 5 percent
Mean annual precipitation: about 2000 mm (80 in)
Mean annual temperature: about 4 degrees C. (34 degrees F.)
TAXONOMIC CLASS: Ashy over medial, glassy over mixed, nonacid Typic Cryaquands
TYPICAL PEDON: Kizhuyak ashy fine sandy loam - on wooded grass herbaceous flood plain at 14 meters (46 feet) elevation. (All colors are for moist soil)
Oe--0 to 9 centimeters (0 to 4 inches); dark brown (7.5YR 3/2), brown (7.5YR 4/2), dry; moderately decomposed plant material; very friable, soft, nonsticky, nonplastic; common very fine, fine, and medium roots throughout; very strongly acid (pH 4.8); abrupt smooth boundary. (5 to 18 cm, 2 to 7 in thick)
C1--9 to 15 centimeters (4 to 6 inches); light brownish gray (10YR 6/2), light gray (10YR 7/2), dry; ashy sandy loam; massive; very friable, soft, nonsticky, nonplastic; common very fine, fine, and medium roots throughout; very strongly acid (pH 4.9); clear smooth boundary.
C2--15 to 95 centimeters (6 to 38 inches); ashy sandy loam; massive; very friable, soft, nonsticky, nonplastic; common fine roots throughout; strongly acid (pH 5.3); clear smooth boundary.
C3--95 to 105 centimeters (38 to 41 inches); ashy loamy sand; single grain; loose, nonsticky, nonplastic; strongly acid (pH 5.5); abrupt smooth boundary. (Combined thickness is 64 to 150 cm, 24 to 60 in thick)
2A--105 to 115 centimeters (41 to 45 inches); medial silt loam; weak medium subangular blocky structure; very friable, soft, nonsticky, nonplastic; slightly acid (pH 6.1); abrupt smooth boundary. (5 to 15 cm, 2 to 6 in thick)
2Bw--115 to 150 centimeters (45 to 59 inches); medial silt loam; massive; very friable, soft, nonsticky, nonplastic; 10 percent gravel; slightly acid (pH 6.5); abrupt wavy boundary. (20 to 50 cm, 8 to 20 in thick)
3C--150 to 200 centimeters (59 to 79 inches); black (2.5Y 2/1) very gravelly sandy loam; massive; friable, slightly hard, slightly sticky, nonplastic; 50 percent gravel; slightly acid (pH 6.5).
TYPE LOCATION: Kodiak Archipelago Soil Survey Area, Alaska; Latitude 57 degrees 37 minutes 20.00 seconds and Longitude 152 degrees 17 minutes 9.00 seconds west, UTM north 6386876.84 and UTM east 542657.01, 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: 5 to 18 cm (2 to 7 in)
Thickness of 1912 ash: 64 to 150 cm (25 to 59 in)
Depth to andic properties: 69 to 168 cm (27 to 66 in)
Depth to cambic horizon: 74 to 183 cm (29 to 72 in)
Depth to gravelly till: 94 to 233 cm (37 to 92 in)
Oa, Oe, Oi horizon:
Hue: 7.5YR to 10 YR
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 10 YR
Value: 2 to 5
Chroma: 1 to 4
Texture: (ashy and glassy) sand, loamy sand, loamy fine sand, very fine sandy loam, 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)
2A horizon:
Hue: 7.5YR to 10 YR
Value: 2 to 5
Chroma: 1 to 3
Texture: medial silt loam, silt, loam, and very fine sandy loam
Silt: 40 to 90 percent
Clay: 2 to 10 percent
Rock fragments: 0 to 14 percent
Reaction class: extremely acid to slightly acid (pH 3.5 to 6.5)
2Bw horizon:
Hue: 7.5YR to 10 YR
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 14 percent
Reaction class: extremely acid to slightly acid (pH 3.5 to 6.5)
3C horizon:
Hue: 7.5YR, 10YR, or 2.5Y
Value: 4 to 6
Chroma: 1 to 4
Texture: sandy loam, fine sandy loam, coarse sandy loam, loamy sand, loamy coarse sand, or their gravelly analogues
Sand: 50 to 85 percent
Clay: 2 to 10 percent
Rock fragments: 35 to 75 percent
Reaction Class: very strongly acid to slightly acid (pH 4.5 to 6.5)
COMPETING SERIES: There are no competing series.
GEOGRAPHIC SETTING:
Elevation: 1.5 to 106 meters (5 to 350 feet)
Parent material: moderately decomposed herbaceous organic material over sandy and loamy volcanic ash over medial silty volcanic ash over gravelly loamy till
Landform: flood plains and drainageways
Slope: 0 to 5 percent
Mean annual temperature: 2 to 6 degrees C. (34 to 43 degrees F.)
Mean annual precipitation: 1500 to 3000 mm (59 to 118 in)
Frost free period: 20 to 50 days
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Aleneva, Missak,
Pasagshak, Sa,
Salonie, and Yukuk series.
Aleneva soils lack the over thickened glassy ashy surface horizon, have andic properties and a cambic horizon, are somewhat poorly to moderately well drained, have sandy-skeletal glacial outwash substratum, and occur on slightly higher land form positions.
Missak soils have thick organic horizons, lack the over thickened glassy ashy surface horizon, are very poorly drained, and occur in depressions.
Pasagshak soils lack the over thickened glassy ashy surface horizon, are somewhat poorly to moderately well drained, have sandy-skeletal control sections, and occur on slightly higher landform positions.
Sa soils have thick organic horizons, lack the over thickened glassy ashy surface horizon, are very poorly drained, and occur in depressions.
Salonie soils lack the over thickened glassy ashy surface horizon, are poorly drained, have sandy-skeletal control sections, and occur on slightly higher landform positions.
Yukuk soils lack the over thickened glassy ashy surface horizon, have andic properties and cambic horizons, have sandy-skeletal control sections, and occur on similar landform positions.
DRAINAGE AND PERMEABILITY:
Drainage class: poorly drained
Saturated Hydraulic Conductivity: moderately high to very high in the C horizon, moderately high to high in the 2A, 2Bw and 3C horizons.
Permeability: moderate to very rapid in the C horizon and moderate to rapid in the 2A, 2Bw, and 3C horizons.
Runoff: negligible to very low.
USE AND VEGETATION:
Used mostly for grazing. The natural vegetation consists principally of water tolerant grasses and sedges.
DISTRIBUTION AND EXTENT: MLRA 220 Alexander Archipelago-Gulf of Alaska Coast.
Extent: limited.
SOIL SURVEY REGIONAL OFFICE (SSRO) RESPONSIBLE: Wasilla, Alaska
SERIES ESTABLISHED: Kodiak Archipelago Soil Survey, Alaska, 1959.
REMARKS: Diagnostic features and horizons recognized in this profile include:
Organic material: 0 to 9 cm (0 to 4 in) (moderately decomposed hemic plant material) (Oe horizon)
1912 volcanic glass (ashy) material: 9 to 105 cm (4 to 41 in) (C horizon)
Andic soil properties: 105 to 150 cm (41 to 59 in) (2A and Bw horizons)
Cambic horizon: 115 to 150 cm (45 to 59 in) (2Bw horizon)
Lithological discontinuity: 150 to 233 cm (59 to 92 in) (3C horizon)
Aquic conditions 0 to 25 cm ( 0 to 10 in)
Source of the volcanic ash is the 1912 eruption of Mt. Novarupta and Mt. Katmai on the Alaska Peninsula.
ADDITIONAL DATA:
User pedon Id: 08SS 00702
National Cooperative Soil Survey
U.S.A.