LOCATION TRICKLAKE               AK

Established Series
IRD. SMC/NDP/SCD
02/2022

TRICKLAKE SERIES

Landscape--hills
Landform--hillslopes
Slope--20 to 65 percent
Parent material--noncalcareous loess
Mean annual precipitation--about 3600 mm
Mean annual air temperature--about 4 degrees C
Depth class--very deep
Drainage class--well drained
Soil moisture regime--udic
Soil temperature regime--cryic
Soil moisture subclass--typic

TAXONOMIC CLASS: Coarse-loamy, mixed, superactive Typic Haplocryolls

TYPICAL PEDON: Tricklake silt loam, forested, on a hillslope of 40 percent at an elevation of 50 m (When described on June 2, 2015, the soil was moist from the surface to a depth of 150 cm.)

Oe--0 to 4 cm; moderately decomposed plant material; neutral (pH 6.9); clear smooth boundary

A--4 to 22 cm; silt loam, dark gray (10YR 4/1) dry, black (10YR 2/1) moist; weak fine granular structure; soft, very friable, nonsticky and nonplastic; common fine roots throughout; many very fine and fine irregular pores; noneffervescent; slightly acid (pH 6.5); clear smooth boundary

Bw1--22 to 56 cm; fine sandy loam, dark gray (7.5YR 4/1) dry, black (7.5YR 2.5/1) moist; weak fine subangular blocky structure; soft, very friable, nonsticky and nonplastic; common fine roots throughout; many very fine and fine irregular pores; noneffervescent; slightly acid (pH 6.3); gradual smooth boundary

Bw2--56 to 150 cm; fine sandy loam, grayish brown (10YR 5/2) dry, very dark grayish brown (10YR 3/2) moist; 5 percent fine yellowish red (5YR 4/6) mottles; weak medium subangular blocky structure; soft, very friable, nonsticky and nonplastic; many very fine and common fine irregular pores; noneffervescent; slightly acid (pH 6.1)

TYPE LOCATION: Glacier Bay National Park and Preserve-Yakutat Area, Alaska; Yakutat City and Borough Census Area; latitude 59.1272175, longitude -138.2526224, datum WGS84 (coordinates determined by a GPS unit)

RANGE IN CHARACTERISTICS:
Mean annual soil temperature--1 to 7 degrees C
Soil moisture control section--dry less than 45 consecutive days in June through October (udic)
Thickness of mollic epipedon--18 to 25 cm
Thickness of cambic ho rizon--15 to 130 cm
Clay content in particle-size control section--1 to 5 percent

Oe horizon
Thickness--0 to 10 cm

A horizon
Value--2 to 4 moist, 4 to 6 dry
Chroma--1 to 4 moist or dry
Clay content--1 to 8 percent
Reaction (pH)--6.2 to 6.5
Thickness--18 to 25 cm

Bw1 horizon
Value--2 to 4 moist, 4 to 6 dry
Chroma--1 to 4 moist or dry
Fine-earth texture--fine sandy loam, sandy loam
Clay content--1 to 5 percent
Reaction (pH)--6.0 to 6.3
Thickness--25 to 60 cm

Bw2 horizon
Hue--7.5YR to 5Y moist or dry
Value--3 to 5 moist, 5 to 7 dry
Chroma--1 to 4 moist or dry
Fine-earth texture--fine sandy loam, sandy loam
Clay content--1 to 3 percent
Reaction (pH)--6.0 to 6.3
Thickness--55 to 100 cm

COMPETING SERIES:
Ducktail--finely disseminated calcium carbonate throughout mineral soil horizons

GEOGRAPHIC SETTING:
Elevation--30 to 200 m
Climate--cool, moist summers; mild, wet winters
Mean annual precipitation--2180 to 6360 mm
Mean annual air temperature--0 to 8 degrees C
Frost-free period--90 to 154 days

GEOGRAPHICALLY ASSOCIATED SOILS:
Kaknau--lithologic discontinuity; on similar landforms

DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Drainage class--well drained
Depth to saturation in normal years--more than 150 cm year round
Flooding--none
Ponding--none
Saturated hydraulic conductivity (Ksat)--moderately high in A horizon, high in Bw horizon

USE AND VEGETATION:
Use--wildlife habitat, recreation, subsistence
Potential native vegetation--baneberry, Sitka alder, bride's feathers, common ladyfern, small enchanter's nightshade, oakfern, false lily of the valley, devilsclub, long beechfern, Sitka spruce, goose neck moss, salmonberry, claspleaf twistedstalk

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
*Mollic epipedon--zone from 4 to 22 cm
*Cambic horizon--zone from 22 to 150 cm
*Particle-size control section--zone from 29 to 104 cm

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National Cooperative Soil Survey
U.S.A.