LOCATION ICY AK
Established Series
IRD. NDP/SCD
05/2022
ICY SERIES
Landscape--shore complexes
Landform--fluviomarine terraces
Slope--0 to 5 percent
Parent material--alluvium
Mean annual precipitation--about 1400 mm
Mean annual air temperature--about 5 degrees C
Depth class--very deep
Drainage class--very poorly drained
Soil moisture regime--aquic
Soil temperature regime--cryic
Soil moisture subclass--typic
TAXONOMIC CLASS: Fine-silty, mixed, superactive, calcareous Typic Cryaquents
TYPICAL PEDON: Icy silt loam on an herbaceous fluviomarine terrace, on a slope of 1 percent at an elevation of 6 m (When described on July 28, 2014, the soil was wet throughout.)
Oe--0 to 20 cm; mucky peat; slightly acid (pH 6.5); clear smooth boundary
Cg1--20 to 89 cm; silt loam, gray (10YR 6/1) dry, dark gray (10YR 4/1) moist; massive; slightly hard, friable, slightly sticky and slightly plastic; common very fine, fine, medium, and coarse roots throughout; common very fine and fine irregular pores; very slightly effervescent (HCL, 1N); neutral (pH 6.8); clear smooth boundary
Cg2--89 to 119 cm; silt loam, light gray (2.5Y 7/1) dry, gray (2.5Y 5/1) moist; massive; slightly hard, friable, slightly sticky and slightly plastic; common very fine and fine irregular pores; slightly effervescent (HCL, 1N); moderately alkaline (pH 7.9); clear smooth boundary
2Cg3--119 to 150 cm; loamy sand, gray (2.5Y 5/1) dry, dark bluish gray (5PB 3/1) moist; single grain; soft, loose, nonsticky and nonplastic; few fine irregular pores; slightly effervescent (HCL, 1N); moderately alkaline (pH 7.9)
TYPE LOCATION: Glacier Bay National Park and Preserve-Gustavus Area, Hoonah-Angoon Census Area, Alaska; latitude 58.4165930, longitude -135.6626350, 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 throughout year round
Thickness of histic epipedon--20 to 30 cm
Depth to aquic conditions--within 25 cm of the soil surface
Depth to reduced matrix--within 25 cm of the soil surface
Other features--lithologic discontinuity; free carbonates
Particle-size control section
*Content of clay--18 to 30 percent
*Content of fine sand or coarser--10 to 14 percent (by weight)
Oe horizon
Thickness--20 to 30 cm
Cg1 and Cg2 horizons
Hue--10YR to 5Y moist or dry
Value--3 to 5 moist, 5 to 7 dry
Chroma--1 or 2 moist or dry
Content of clay--18 to 29 percent
Content of fine sand or coarser--10 to 14 percent, by weight
Reaction (pH)--6.8 to 8.4
Effervescence--very slightly effervescent, slightly effervescent
Thickness--20 to 90 cm
2Cg3 horizon
Hue--10YR to 5Y moist or dry; gleyed wet
Value--2 to 4 moist, 4 to 6 dry
Chroma--1 or 2 moist or dry
Fine-earth texture--loamy sand, sand
Clay content--0 to 5 percent
Reaction (pH)--7.1 to 8.0
Effervescence--very slightly effervescent, slightly effervescent
Thickness--30 to 50 cm
COMPETING SERIES: None
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--1 to 9 degrees C
Frost-free period--90 to 154 days
GEOGRAPHICALLY ASSOCIATED SOILS:
Bertha--no histic epipedon; no aquic conditions; on adjacent flood plains
Bulky--no histic epipedon; on adjacent landforms
Excursion--coarse-loamy particle-size class; no lithologic discontinuity; on adjacent landforms
Threesum--no histic epipedon; strongly contrasting particle-size class; on adjacent landforms
DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Drainage class--very poorly drained
Depth to saturation in normal years--at or near the soil surface year round
Flooding--none
Ponding--frequent, very long periods
Saturated hydraulic conductivity (Ksat)--moderately high or high in Cg horizon, high or very high in 2Cg3 horizon
USE AND VEGETATION:
Use--wildlife habitat, recreation, subsistence
Potential native vegetation--Sitka alder, kinnikinnick, bunchberry dogwood, black crowberry, splendid feather moss, heartleaf twayblade, sidebells wintergreen, lodgepole pine, Sitka spruce, Schreber's big red stem moss, oval-leaf blueberry
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 recognized in this pedon
*Histic epipedon--zone from the surface to a depth of 20 cm
*Aquic conditions--zone from the surface to a depth of 150 cm
*Reduced matrix--zone from 20 to 150 cm
*Free carbonates--zone from 20 to 150 cm
*Depth to lithologic discontinuity--119 cm
*Particle-size control section--zone from 45 to 120 cm
National Cooperative Soil Survey
U.S.A.