LOCATION JUSTICECREEK            AK

Established Series
IRD. TDM/NDP/SCD
12/2022

JUSTICECREEK SERIES

Landscape--mountains
Landform--mountain slopes
Slope--35 to 75 percent
Parent material--organic material over residuum
Mean annual precipitation--about 2500 mm
Mean annual air temperature--about 4 degrees C
Depth class--very shallow
Drainage class--well drained
Soil moisture regime--udic
Soil temperature regime--cryic
Soil moisture subclass--typic

TAXONOMIC CLASS: Dysic Lithic Cryofolists

TYPICAL PEDON: Justicecreek highly decomposed plant material on a mountain slope of 75 percent at an elevation of 96 m (When described on July 26, 2013, the soil was moist throughout.)

Oa1--0 to 11 cm; highly decomposed plant material; very strongly acid (pH 4.5); clear smooth boundary

Oa2--11 to 22 cm; highly decomposed plant material; very strongly acid (pH 4.7); clear wavy boundary

2R--22 cm; bedrock

TYPE LOCATION: Glacier Bay National Park and Preserve-Gustavus Area, Alaska; Hoonah-Angoon Census Area; latitude 58.3904494, longitude -136.7903687, datum WGS84 (coordinates determined by a GPS unit)

RANGE IN CHARACTERISTICS:
Mean annual soil temperature--1 to 5 degrees C
Soil moisture control section--dry less than 45 consecutive days in June through October (udic)
Depth to lithic contact--less than 25 cm
Thickness of folistic epipedon--15 to 30 cm

Oa1 horizon, or Oi or Oe horizon in some pedons
Reaction (pH)--4.2 to 4.7
Thickness--7 to 11 cm

Oa2 horizon
Reaction (pH)--4.2 to 4.7
Thickness--10 to 15 cm

COMPETING SERIES:
McGilvery--25 to 50 cm (shallow) to a lithic contact (graywacke); thin mineral layer of very gravelly silt loam in upper part of particle-size control section
Toyatte--25 to 50 cm (somewhat poorly drained) to saturation and aquic conditions; 25 to 50 cm (shallow) to a lithic contact

GEOGRAPHIC SETTING:
Elevation--90 to 105 m
Climate--cool, moist summers; mild, wet winters
Mean annual precipitation--1750 to 3350 mm
Mean annual air temperature--2 to 6 degrees C
Frost-free period--90 to 154 days

GEOGRAPHICALLY ASSOCIATED SOILS:
Abdallah--more than 60 percent rock fragments throughout particle-size control section; in avalanche chutes of similar landforms
Passage--spodic horizon; on similar landforms
Kutskloh--histic epipedon; on similar landforms

DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Drainage class--well drained
Depth to saturation in normal years--more than 150 cm
Saturated hydraulic conductivity (Ksat)--very high

USE AND VEGETATION:
Use--wildlife habitat, recreation
Potential natural vegetation--Sitka spruce, western hemlock, mountain hemlock, bunchberry dogwood, splendid feather moss, rusty menziesia, salmonberry, sphagnum moss, dwarf bilberry

DISTRIBUTION AND EXTENT: Alexander Archipelago-Gulf of Alaska Coast, Alaska; MLRA 220; moderate 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 in this pedon
*Folistic epipedon--zone from the surface to a depth of 22 cm
*Depth to lithic contact--22 cm
*Depth to lithologic discontinuity--22 cm
*Particle-size control section--zone from the surface to a depth of 22 cm

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National Cooperative Soil Survey
U.S.A.