LOCATION OBERLIN AK
Established Series
IRD. NDP/SCD
05/2022
OBERLIN SERIES
Landscape--shore complexes
Landform--marine terraces
Slope--0 to 2 percent
Parent material--outwash over marine deposits
Mean annual precipitation--about 1400 mm
Mean annual air temperature--about 5 degrees C
Depth class--very deep
Drainage class--poorly drained
Soil moisture regime--aquic
Soil temperature regime--cryic
Soil moisture subclass--typic
TAXONOMIC CLASS: Sandy, mixed Typic Cryaquepts
TYPICAL PEDON: Oberlin sandy loam on an herbaceous estuarine marine terrace, on a slope of 0 percent at an elevation of 1 m (When described on August 8, 2013, the soil was moist from the surface to a depth of 18 cm and wet from a depth of 18 to 150 cm.)
A--0 to 3 cm; sandy loam, yellowish brown (10YR 5/4) dry, dark yellowish brown (10YR 3/4) moist; moderate fine granular structure; soft, very friable, nonsticky and nonplastic; many very fine and fine and common medium and coarse roots throughout; common very fine and fine irregular pores ; noneffervescent; slightly acid (pH 6.5); clear smooth boundary
Bw--3 to 18 cm; fine sandy loam, light yellowish brown (10YR 6/4) dry, dark yellowish brown (10YR 4/4) moist; moderate medium subangular blocky structure; slightly hard, friable, nonsticky and nonplastic; common very fine, fine, medium, and coarse roots throughout; common very fine and fine irregular pores; 5 percent masses of oxidized iron, yellowish brown (10YR 5/6) moist; noneffervescent; neutral (pH 6.7); clear smooth boundary
C--18 to 35 cm; very fine sandy loam, pale yellow (2.5Y 7/3) dry, light olive brown (2.5Y 5/3) moist; massive; soft, very friable, nonsticky and nonplastic; common very fine, fine, and medium roots throughout; common very fine and fine irregular pores; 10 percent masses of reduced iron, olive gray (5Y 4/2) moist, and 15 percent masses of oxidized iron, dark yellowish brown (10YR 4/6) moist; strongly effervescent; moderately alkaline (pH 8.4); clear wavy boundary
2Cg1--35 to 58 cm; loamy sand, gray (2.5Y 5/1) dry, gray (N 5/0) moist; massive; soft, very friable, nonsticky and nonplastic; common fine and medium roots throughout; common very fine and fine irregular pores; strongly effervescent; moderately alkaline (pH 8.3); gradual wavy boundary
2Cg2--58 to 150 cm; coarse sand, gray (2.5Y 5/1) dry, dark gray (N 4/) moist; single grain; loose, nonsticky and nonplastic; few very fine and fine interstitial pores; slightly effervescent; moderately alkaline (pH 8.2)
TYPE LOCATION: Glacier Bay National Park and Preserve-Gustavus Area, Alaska; Hoonah-Angoon Census Area; latitude 58.4060568, longitude -135.6983182, datum WGS84 (coordinates determined by a GPS unit)
RANGE IN CHARACTERISTICS:
Mean annual soil temperature--1 to 7 degrees C
Soil moisture control section--usually saturated within 25 cm of soil surface year round
Thickness of cambic horizon--15 to 30 cm
Depth to redoximorphic features--within 25 cm of soil surface
Clay content in particle-size control section--2 to 11 percent
A horizon
Value--3 to 5 moist, 5 to7 dry
Chroma--3 to 6 moist or dry
Fine-earth texture--sandy loam, very fine sandy loam
Clay content--3 to 9 percent
Reaction (pH)--5.9 to 6.9
Thickness--1 to 5 cm
Bw horizon
Hue--10YR or 2.5Y moist or dry
Value--4 or 5 moist, 6 or 7 dry
Chroma--2 to 6 moist or dry
Fine-earth texture--sandy loam, very fine sandy loam, fine sandy loam
Clay content--3 to 9 percent
Reaction (pH)--6.1 to 7.8
Effervescence--noneffervescent to slightly effervescent
Thickness--15 to 20 cm
C horizon
Hue--10YR or 2.5Y moist or dry
Value--4 or 5 moist, 6 or 7 dry
Chroma--3 to 6 moist or dry
Fine-earth texture--sandy loam, very fine sandy loam, fine sandy loam
Clay content--8 to 11 percent
Reaction (pH)--7.0 to 8.5
Effervescence--slightly effervescent, strongly effervescent
Thickness--5 to 20 cm
2Cg horizon
Hue--5Y, neutral, 5B, or other gleyed colors moist, 10YR to 5Y dry
Value--3 to 5 moist or dry
Chroma--0 or 1 moist or dry
Fine-earth texture--sand, coarse sand, loamy sand, loamy coarse sand
Clay content--2 to 5 percent
Sand content--79 to 97 percent
Reaction (pH)--7.3 to 8.5
Effervescence--slightly effervescent, strongly effervescent
Thickness--80 to 110 cm
COMPETING SERIES:
Bulky--no lithologic discontinuity; subject to frequent, long periods of ponding; O horizon comprised of forest litter
GEOGRAPHIC SETTING:
Elevation--0 to 20 m
Climate--cool, moist summers; mild, wet winters
Mean annual precipitation--850 to 1850 mm
Mean annual air temperature--0 to 9 degrees C
Frost-free period--90 to 154 days
GEOGRAPHICALLY ASSOCIATED SOILS:
Perouse--no cambic horizon; on adjacent landforms
DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Drainage class--poorly drained
Depth to saturation in normal years--within 25 cm of soil surface
Flooding--none
Ponding--none
Saturated hydraulic conductivity (Ksat)--moderately high or high in A and C horizons, high or very high in Bw horizon, very high in 2Cg horizon
USE AND VEGETATION:
Use--wildlife habitat, recreation, subsistence
Potential native vegetation--common yarrow, seacoast angelica, silverweed cinquefoil, Lyngbye's sedge, red fescue, common cowparsnip, American dunegrass, Nootka lupine, marsh grass of Parnassus, goose tongue, Schreber's big red stem moss, little yellow rattle, Barclay's willow, goose neck moss, undergreen willow
DISTRIBUTION AND EXTENT: Alexander Archipelago-Gulf of Alaska Coast, Alaska; MLRA 220; small extent
SOIL SURVEY REGIONAL OFFICE (SSRO) RESPONSIBLE: WASILLA, ALASKA
SERIES ESTABLISHED: Glacier Bay National Park and Preserve-Gustavus Area, Alaska; 2020.
REMARKS:
Diagnostic horizons and other features recognized in this pedon
*Ochric epipedon
*Cambic horizon--zone from 3 to 18 cm
*Redoximorphic concentrations--zone from 3 to 35 cm
*Redoximorphic depletions that have chroma of 2 or less--zone from 18 to 35 cm
*Aquic conditions--zone from 18 to 150 cm
*Reduced matrix--zone from 35 to 150 cm
*Free carbonates--zone from 18 to 150 cm
*Lithologic discontinuity--zone from 35 to 150 cm
*Particle-size control section--zone from 25 to 100 cm
National Cooperative Soil Survey
U.S.A.