LOCATION GLACIERBAY AK
Established Series
IRD. DKM/NDP/SCD
05/2022
GLACIERBAY SERIES
Landscape--outwash plains
Landform--outwash deltas
Slope--0 to 5 percent
Parent material--glaciolacustrine deposits
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 over sandy or sandy-skeletal, mixed, superactive, calcareous Typic Cryaquents
TYPICAL PEDON: Glacierbay silt loam on an outwash delta, on a slope of 1 percent at an elevation of 19 m (When described on August 3, 2014, the soil was wet throughout.)
A--0 to 8 cm; silt loam, grayish brown (2.5Y 5/2) dry, very dark grayish brown (2.5Y 3/2) moist; moderate fine granular structure; slightly hard, friable, slightly sticky and slightly plastic; common very fine, fine, medium, and coarse roots throughout; common very fine and fine irregular pores; moderately acid (pH 5.7); clear smooth boundary
Cg1--8 to 25 cm; silt loam, gray (10YR 5/1) dry, dark gray (N 4/0) wet; weak medium subangular blocky structure; moderately hard, firm, slightly sticky and slightly plastic; common very fine, fine, medium, and coarse roots throughout; common very fine and fine irregular pores; 30 percent fine dark yellowish brown (10YR 4/4) masses of oxidized iron; moderately acid (pH 5.8); gradual smooth boundary
Cg2--25 to 58 cm; silt loam, dark gray (2.5Y 4/1) dry, gray (N 5/0) wet; weak medium subangular blocky structure; moderately hard, firm, slightly sticky and slightly plastic; common medium and fine roots; common very fine and fine irregular pores; 5 percent fine strong brown (7.5YR 4/6) masses of oxidized iron; slightly effervescent; moderately alkaline (pH 7.9); clear wavy boundary
2Cg1--58 to 100 cm; sand, gray (5Y 6/1) dry, gray (5Y 5/1) wet; massive; slightly hard, friable, nonsticky and nonplastic; common very fine irregular pores; strongly effervescent; moderately alkaline (pH 8.1); gradual wavy boundary
2Cg2--100 to 130 cm; fine sand, gray (5Y 6/1) dry, gray (5Y 5/1) wet; single grain; soft, very friable, nonsticky and nonplastic; 5 percent yellowish brown (10YR 5/6) masses of oxidized iron; few fine irregular pores; strongly effervescent; moderately alkaline (pH 8.1); diffuse wavy boundary
2Cg3--130 to 150 cm; sand, gray (5Y 6/1) dry, gray (5Y 5/1) wet; single grain; loose, nonsticky and nonplastic; 7 percent strong brown (7.5YR 4/6) masses of oxidized iron; few very fine irregular pores; violently effervescent; moderately alkaline (pH 8.3)
TYPE LOCATION: Glacier Bay National Park and Preserve-Gustavus Area, Alaska; Hoonah-Angoon Census Area; latitude 58.4096010, longitude -135.7740192, datum WGS84 (coordinates determined by a GPS unit)
RANGE IN CHARACTERISTICS:
Mean annual soil temperature--1 to 7 degrees C
Soil moisture control section--normally saturated at or above the soil surface year round
Depth to redoximorphic concentrations--within 25 cm of soil surface
Reduced matrix--within 25 cm of soil surface
Particle-size control section
*Clay content--1 to 24 percent
*Free carbonates--throughout
*Effervescence--very slightly effervescent to violently effervescent
A horizon
Hue--10YR or 2.5Y moist or dry
Value--3 to 5 moist, 4 or 5 dry
Chroma--1 to 3 moist or dry
Fine-earth texture--silt loam, silt
Clay content--5 to 15 percent
Reaction (pH)--5.5 to 6.0
Thickness--5 to 15 cm
Cg1 horizon
Hue--10YR to 5Y moist or dry, neutral to 10GY wet
Value--2.5 to 5 moist, dry, or wet
Chroma--0 to 2 moist, dry, or wet
Fine-earth texture--silt loam, silt
Clay content--5 to 18 percent
Reaction (pH)--5.5 to 6.2
Thickness--15 to 25 cm
Cg2 horizon
Hue--10YR to 5Y moist or dry, neutral to 10GY wet
Value--2.5 to 5 moist, dry, or wet
Chroma--0 to 2 moist, dry, or wet
Clay content--18 to 24 percent
Reaction (pH)--7.0 to 8.3
Thickness--30 to 50 cm
2Cg1 horizon
Hue--10YR to 5Y moist or dry, neutral to 10GY wet
Value--2.5 to 5 moist, dry, or wet
Chroma--0 to 2 moist, dry, or wet
Fine-earth texture--sand, fine sand
Clay content--1 to 3 percent
Reaction (pH)--7.8 to 8.3
Thickness--35 to 60 cm
2Cg2 horizon
Hue--10YR to 5Y moist or dry, neutral to 10GY wet
Value--2.5 to 5 moist, dry, or wet
Chroma--0 to 2 moist, dry, or wet
Fine-earth texture--fine sand, sand
Clay content--1 to 3 percent
Reaction (pH)--7.8 to 8.3
Thickness--20 to 40 cm
2Cg3 horizon
Hue--10YR to 5Y moist or dry, neutral to 10GY wet
Value--2.5 to 5 moist, dry, or wet
Chroma--0 to 2 moist, dry, or wet
Fine-earth texture--sand, fine sand
Clay content--1 to 3 percent
Reaction (pH)--7.8 to 8.5
Thickness--10 to 35 cm
COMPETING SERIES: None
GEOGRAPHIC SETTING:
Elevation--1 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:
Excursion--histic epipedon; on similar landforms
Geikie--cambic horizon; on similar landforms
Topsy--saturation and aquic conditions within 25 cm of soil surface; on adjacent landforms
DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Drainage class--very poorly drained
Saturation in normal years--near or above the soil surface year round
Ponding--frequent, long periods
Saturated hydraulic conductivity (Ksat)--moderately high or high throughout
USE AND VEGETATION:
Use--wildlife habitat, recreation
Potential natural vegetation--Sitka alder, alpine bearberry, bunchberry dogwood, black crowberry, splendid feather moss, heartleaf twayblade, sidebells wintergreen, feather moss, oval-leaf 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
*Ochric epipedon
*Redoximorphic concentrations--zone from 8 to 150 cm
*Reduced matrix--zone from 8 to 150 cm
*Aquic conditions--zone from 8 to 150 cm
*Free carbonates--zone from 25 to 150 cm
*Lithologic discontinuity--zone from 58 to 150 cm
*Particle-size control section--zone from 25 to 100 cm
National Cooperative Soil Survey
U.S.A.