LOCATION PEEDE                   AK

Established Series
DKM, DKS, MJM
02/2022

PEEDE SERIES

The Peede series consists of deep, very poorly drained soils formed in silty and loamy alluvium. The Peede soils occur in depressions on flood plains. Slope ranges from 0 to 2 percent. The mean annual temperature is about 26 degrees F., and the mean annual precipitation is about 12 inches.

TAXONOMIC CLASS: Coarse-silty, mixed, superactive, nonacid Typic Cryaquents

TYPICAL PEDON: Peede silt loam on a 0 percent slope under sedge and grass vegetation. (All colors are for moist soil)

Oe--0 to 5 inches (0 to 12 cm); very dark brown (7.5YR 2.5/2) moderately decomposed plant material; moderately decomposed sedge and grass blades; few fine and very fine roots; slightly acid (pH 6.1); abrupt smooth boundary. (1 to 5 inches (3 to 12 cm) thick)

Cg1--5 to 40 inches (12 to 100 cm); dark gray (2.5Y 4/1) silt loam; massive; friable, nonsticky and nonplastic; common very fine and fine roots; common fine distinct light olive brown (2.5Y 5/6) redoximorphic concentrations; neutral (pH 6.6); diffuse smooth boundary. (19 to 39 inches (45 to 98 cm) thick

Cg2--40 to 55 inches (100 to 140 cm); dark greenish gray (5GY 4/1) very fine sandy loam; massive; friable; nonsticky and nonplastic; few very fine roots; common medium distinct olive (5Y 4/4) redoximorphic concentrations; neutral (pH 6.6)l; abrupt smooth boundary. (10 to 31 inches (25 to 80 cm) thick)

Oeb--55 to 59 inches (140 - 150 cm); black (10YR 2/1) hemic material; moderately decomposed organic material; very friable; nonsticky and nonplastic; neutral (pH 7.0); abrupt smooth boundary. (4 to 6 inches (10 to 15 cm).thick)

2C--59 to 70 inches (150 to 180 cm); dark olive gray (5Y 3/2) fine sand; single grain; loose, nonsticky and nonplastic; slightly alkaline (pH 7.6).

TYPE LOCATION: Fort Wainwright Area, Alaska; about 6 miles south east of Fairbanks; in the NE 1/4 of the SW 1/4, section 28, T. 1 S., R. 1 E.; Fairbanks (D-2) SE 1:25,000 quad; Fairbanks Meridian; UTM north 7180007 and UTM east 454481, zone 6.

RANGE IN CHARACTERISTICS: Thickness of the organic mat ranges from 1 to 5 inches (3 to 12 cm). The texture of the control section is silt loam or very fine sandy loam with a weighted average less than 15 percent fine sand or coarser and less than 18 percent clay. This material contains significant amounts of mica but less than 25 percent. Buried organic layers may occur at any depth or may be absent. Thin layers of mineral material coarser than very fine sandy loam may also occur at any depth. Reaction ranges from neutral in the surface to slightly alkaline in the substratum.

The O horizon has hue of 10YR or 7.5YR; value of 2 to 3; and chroma of 1 to 3. It is slightly to highly decomposed plant material. Reaction ranges from slightly acid to neutral.

The Cg horizon has hue of 2.5Y, 5Y, 5GY, or N; value of 3 to 5; and chroma of 1 to 2. Texture is silt loam or very fine sandy loam. Reaction ranges from slightly acid to slightly alkaline.

The Ab horizon (where present) has hue of 2.5Y, 5Y, or 10Y; value of 3 to 4; and chroma 1 or 2. Texture is very fine sand, fine sand, loamy very fine sand, very fine sandy loam, or silt loam. Reaction ranges neutral to slightly alkaline.

The Ob horizon (where present) has hue of 10YR or 7.5YR, value of 2 or 3, and chroma of 1 or 2. It is slightly to hightly decomposed plant material. Reaction is slightly acid or neutral.

The 2C horizon (where present) has hue of 2.5Y or 5Y, value of 2 to 5, and chroma of 1 to 3. Texture is loamy sand, loamy fine sand, fine sand, or sand with 0 to 70 percent coarse fragments. Reaction is slightly acid to slightly alkaline.

COMPETING SERIES: There are no competing series in the same family.

GEOGRAPHIC SETTING: The Peede soils occur in depressions on floodplains. Slopes range from 0 to 2 percent. Depth to a seasonal water table ranges from 0 to 20 inches. The climate is subarctic continental with long, cold winters and short warm summers. The mean annual temperature ranges from 25 to 20 degrees F., and the mean annual precipitation ranges from 10 to 14 inches.

GEOGRAPHICALLY ASSOCIATED SOILS: These are the Liscum, Mosquito, Tanacross, Salchaket, Jarvis, and Tanana soils. Liscum, Mosquito and Tanacross soils are very poorly drained and have histic epipedons. Tanana soils are poorly drained and on slightly higher positions. Salchaket and Jarvis soils are well drained and on higher positions.

DRAINAGE AND PERMEABILITY: Very poorly drained, runoff is very slow, saturated hydraulic conductivity is moderate in the control section. This soil is subject to occasional flooding, and ponded floodwaters may persist for several years.

USE AND VEGETATION: This soil is used for wildlife habitat. Most of the area is in native grass and sedge vegetation with some willow shrubs occurring.

DISTRIBUTION AND EXTENT: MLRA 229 Interior Alaska Lowlands. The series is of moderate extent

SOIL SURVEY REGIONAL OFFICE (SSRO) RESPONSIBLE: WASILLA, ALASKA

SERIES ESTABLISHED: Greater Fairbanks Area, Alaska 2002.

REMARKS: Diagnostic horizons and features in this pedon include: texture finer than loamy fine sand and matrix chroma of 1; and irregular decrease in organic carbon with depth.

---

National Cooperative Soil Survey
U.S.A.