LOCATION CHARPENTIER             AK

Established Series
IRD. NDP/SCD
12/2022

CHARPENTIER SERIES

Landscape--mountains
Landform--muskegs of mountain slopes
Slope--3 to 15 percent
Parent material--mossy organic material over residuum
Mean annual precipitation--about 2500 mm
Mean annual air temperature--about 3 degrees C
Depth class--shallow
Drainage class--very poorly drained
Soil moisture regime--aquic
Soil temperature regime--cryic
Soil moisture subclass--typic

TAXONOMIC CLASS: Dysic Lithic Cryohemists

TYPICAL PEDON: Charpentier peat in a muskeg of a mountain slope of 9 percent at an elevation of 51 m (When described on May 31, 2013, the soil was wet throughout.)

Oi--0 to 20 cm; peat; extremely acid (pH 4.0); clear smooth boundary

Oe--20 to 40 cm; mucky peat; extremely acid (pH 4.3); clear smooth boundary

Oa--40 to 50 cm; muck; very strongly acid (pH 4.6); abrupt wavy boundary

2R--50 cm; bedrock

TYPE LOCATION: Glacier Bay National Park and Preserve-Gustavus Area, Alaska; Hoonah-Angoon Census Area; latitude 58.3843827, longitude -136.5585859, datum WGS84 (coordinates determined by a GPS unit)

RANGE IN CHARACTERISTICS:
Mean annual soil temperature--1 to 5 degrees C
Depth to bedrock--25 to 50 cm (shallow)
Subsurface tier--dominantly hemic material; zone from 20 to 40 cm
Bottom tier--sapric material; zone from 40 to 50 cm
Soil moisture control section--usually saturated at or near soil surface year round

Oi horizon
Reaction (pH)--4.0 to 4.3
Thickness--9 to 20 cm

Oe horizon
Reaction (pH)--4.2 to 4.4
Thickness--15 to 30 cm

Oa horizon
Reaction (pH)--4.4 to 4.6
Thickness--10 to 20 cm

COMPETING SERIES:
Grindall--50 to 100 cm (moderately deep) to a lithic contact (schist)

GEOGRAPHIC SETTING:
Elevation--20 to 250 meters
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:
Boussole--25 to 50 cm (somewhat poorly drained) to aquic conditions; on similar landforms
Passage--spodic horizon; on adjacent hills
Kashoto--dominantly sapric material; no lithic contact within a depth of more than 150 cm (very deep); on similar landforms
Kutskloh--25 to 50 cm (somewhat poorly drained) to oxyaquic conditions; on similar landforms

DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Drainage class--very poorly drained
Saturation in normal years--at or near soil surface year round

USE AND VEGETATION:
Use--wildlife habitat, recreation
Potential natural vegetation--longawn sedge, moss, reindeer lichen, threeleaf goldthread, Sierra shooting star, roundleaf sundew, black crowberry, bog laurel, sphagnum, blueberry

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.

REMARKS:
Diagnostic horizons and other features in this pedon
*Histic epipedon--zone from the surface to a depth of 50 cm
*Fibric soil material--zone from the surface to a depth of 20 cm
*Aquic conditions--zone from the surface to a depth of 50 cm
*Hemic soil material--zone from 20 to 40 cm
*Sapric material--zone from 40 to 50 cm
*Depth to lithic bedrock--50 cm
*Depth to lithologic discontinuity--50 cm
*Particle-size control section--zone from the surface to a depth of 50 cm

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National Cooperative Soil Survey
U.S.A.