LOCATION PILEDRIVER              AK

Established Series
DKM, DKS, MJM
12/2022

PILEDRIVER SERIES

Depth class: very deep
Drainage class: somewhat poorly
Parent material: stratified silty and sandy alluvium overlying sand and gravel
Landform: floodplains
Slope: 0 to 2 percent
Mean annual temperature: is about 26 degrees F.
Mean annual precipitation: is about 12 inches.

TAXONOMIC CLASS: Coarse-loamy over sandy or sandy-skeletal, mixed, superactive, nonacid Aquic Cryofluvents

TYPICAL PEDON: Piledriver very fine sandy loam - on less than 1 percent slope in mixed white spruce and balsam poplar forest. (all colors are for moist soil)

Oi-- 0 to 3 inches (0 to 8 cm); dark brown (7.5YR 3/3) fibric material; slightly decomposed moss, leaves, twigs and other woody debris; common fine and few medium roots; extremely acid; clear wavy boundary. (1 to 8 inches thick) (1 to 20 cm)

C1-- 3 to 10 inches (8 to 26 cm); light olive brown (2.5Y 5/3) silt loam; weak medium platy structure parting to weak medium granular; friable, nonsticky and nonplastic; few fine roots; many, medium, distinct gray (2.5Y 5/1) redoximorphic depletions; slightly acid; abrupt smooth boundary.

C2-- 10 to 15 inches (26 to 37 cm); light olive brown (2.5Y 5/3) silt loam; weak medium platy structure parting to weak medium granular; very friable, nonsticky and nonplastic; few fine roots; common medium distinct dark gray (5Y 4/1) redoximorphic depletions; common black (7.5YR 2.5/1) strata of organic material up to 1 inch thick; neutral; clear smooth boundary.

C3-- 15 to 33 inches (37 to 84 cm); grayish brown (2.5Y 5/2) loamy fine sand; weak fine platy structure; very friable, nonsticky and nonplastic; common medium faint gray (2.5Y 5/1) redoximorphic depletions; neutral; clear smooth boundary. (Combined thickness of the C horizon is 10 to 38 inches(26 to 96 cm)

2C-- 33 to 60 inches (84 to 152 cm); grayish brown (2.5Y 5/2) extremely gravely sand; single grain; loose, nonsticky and nonplastic; 70 percent rounded gravel; neutral.

TYPE LOCATION: Fairbanks Area, Alaska; UTM zone 6, 495400E, 7167350N, 97MM141 HOLE 5

RANGE IN CHARACTERISTICS: Depth to sand and gravel ranges from 20 to 40 inches (50 to 102 cm). Organic carbon content decreases irregularly with depth. The texture of the upper part of the control section is stratified silt loam, very fine sandy loam, fine sandy loam and very fine sand with a weighted average of more 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. Texture of the lower part of the control section is sand or loamy sand with coarse fragments ranging from 0 to 70 percent.

The O horizon has hue of 10YR or 7.5YR; value of 2, 2.5 or 3; and chroma of 1 to 3. Organic material is slightly to strongly decomposed, and reaction ranges from extremely to slightly acid.

The C horizon has hue of 10YR, 2.5Y and 5Y; value of 3 to 5; and chroma 2 and 3. These horizons are stratified with textures including very fine sandy loam, silt loam, loamy very fine sand and loamy fine sand. Profiles may have stratified black organic material from 2 to 15 percent. Reaction ranges from slightly acid to neutral.

The 2C horizon has hue of 2.5Y and 5Y; value of 3 to 5; and chroma 2 and 3. Texture is sand or loamy sand. Coarse fragment content ranges from 0 to 70 percent, with 0 to 70 percent gravel and 0 to15 percent cobble.

COMPETING SERIES: This is the Dackey series. Dackey series has a depleted matrix between 10 and 20 inches

GEOGRAPHIC SETTING:
Depth class: very deep
Drainage class: somewhat poorly
Parent material: stratified silty and sandy alluvium overlying sand and gravel
Landform: floodplains
Slope: 0 to 2 percent
Climate: subarctic continental with long, cold winters and short, warm summers
Mean annual temperature: 25 to 28 degrees F.
Mean annual precipitation: 10 to inches.

GEOGRAPHICALLY ASSOCIATED SOILS: These are the Chena, Eielson, Stratify, Jarvis, and Salchaket soils. Chena and Stratify soils are less than 20 inches (50 cm) to sand and gravel. Eielson and Salchaket soils are deeper than 40 inches (100 cm) to sand and gravel. Jarvis soils do not have low chroma redoximorphic depletions within 20 inches (50 cm) of the surface.

DRAINAGE AND PERMEABILITY: Somewhat poorly drained. Runoff is slow. Saturated hydraulic conductivity is moderately high to high in the upper part and high to very high in underlying material. Is subject to rare to occasional flooding.

USE AND VEGETATION: Most areas are in native forest consisting of white spruce, cottonwood and quaking aspen with alder shrubs. A water table is present at a depth of 3 to 6 feet for some period in most summers, allowing capillary rise of water into the soil profile.

DISTRIBUTION AND EXTENT: MLRA 229 Interior Alaska Lowlands. The series is of minor 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: low chroma redoximorphic depletions from 3 to 33 inches; irregular decrease in organic carbon with depth.

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National Cooperative Soil Survey
U.S.A.