LOCATION NORTH POLE              AK

Established Series
DKM/JPM
05/2022

NORTH POLE SERIES

Depth class: very deep
Drainage class: poorly drained
.

TAXONOMIC CLASS: Coarse-loamy over sandy or sandy-skeletal, mixed, superactive, nonacid Aeric Cryaquepts

TYPICAL PEDON: North Pole very fine sandy loam - on a level plain at 540 feet elevation under tamarack and black spruce forest. (All colors are for moist soil)

Oi--0 to 2 inches (0 to 6 cm); very dark brown (7.5YR 2.5/2) slightly decomposed moss; common very fine to coarse roots; neutral (pH 7.0); abrupt smooth boundary.

Oe--2 to 4 inches (6 to 11 cm); black (2.5Y 2.5/1) moderately decomposed moss; common fine and very fine roots; neutral (pH 7.3); abrupt irregular boundary.

Bg/A--4 to 18 inches (11 to 45 cm); 60 percent light olive brown (2.5Y 5/3) and 40 percent very dark gray (10YR 3/1) very fine sandy loam stratified with very fine sand; weak thick platy structure; friable, nonsticky and nonplastic; common medium distinct gray (2.5Y 6/1) redoximorphic concentrations; few fine and very fine roots; neutral (pH 7.2); gradual smooth boundary.

Bw--18 to 39 inches (45 to 98 cm) light olive brown (2.5Y 5/4) very fine sandy loam stratified with silt loam; structureless; friable, slightly sticky and slightly plastic; common medium prominent strong brown (7.5YR 5/6) redoximorphic concentrations; neutral (pH 7.2); gradual smooth boundary.

2C--39 to 49 inches (98 to 125 cm); olive brown (2.5Y 4/3) loamy fine sand; structureless; very friable, nonsticky and nonplastic; neutral (pH 7.2); gradual smooth boundary.

2Cg--49 to 63 inches (125 to 160 cm); gray (2.5Y 5/1) sand; single grain; loose; nonsticky and nonplastic; neutral (pH 7.2).

TYPE LOCATION: Greater Fairbanks Area, Alaska; NE1/4, SW1/4, Section 28, T.1S., R.1E., Fairbanks Meridian.

RANGE IN CHARACTERISTICS:
Soil moisture regime: udic
Mean annual soil temperature: 33 degrees F
Thickness of organic materials: 2 to 8 inches
Depth to sand and gravel: 10 to 40 inches

O horizon:
Matrix color: hue of 7.5YR to 2.5Y; value of 2 or 3; chroma of 1 or 2
Texture: slightly to moderately decomposed plant material
Reaction class: very strongly acid to neutral

B horizons:
Matrix color: hue of 10YR to 5Y; value of 2.5 to 5; chroma of 1 to 4
Texture: strata of very fine sandy loam, silt loam,loamy very fine sand, and loamy fine sand
Reaction class: slightly acid or neutral

2C horizon:
Matrix color: hue of 2.5Y or 5Y; value of 3 to 6; chroma of 1 to 3
Texture: sand or loamy sand
Coarse fragments: 0 to 70 percent
Gravel content: 0 to 70 percent
Cobble content: 0 to 15 percent
Reaction class: neutral or slightly alkaline

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

GEOGRAPHIC SETTING:
Parent material: alluvium
Landform: alluvial flats
Slope: 0 to 2 percent
Mean annual temperature: 23 to 28 degrees F.
Mean annual precipitation: 10 to 14 inches
Climate zone: cold continental

GEOGRAPHICALLY ASSOCIATED SOILS:

DRAINAGE AND PERMEABILITY: Poorly drained. Negligible to very low runoff. Moderate permeability in the loamy surface horizons and moderately rapid in the skeletal substratum.

USE AND VEGETATION: Forest vegetation of black spruce and tamarack.

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 features and horizons recognized in this profile include:
Ochric epipedon: 4 to 18 inches
Cambic horizon: 4 to 39 inches
Temperature regime: cryic
Moisture regime: aquic
Particle size: coarse-loamy from 4 to 39 inches and loamy-skeletal from 39 to 63 inches

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National Cooperative Soil Survey
U.S.A.