LOCATION VIVID                   AK

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

VIVID SERIES

Landscape--mountain valleys
Landform--glacial-valley floors
Slope--0 to 20 percent
Parent material--lacustrine deposits over till
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: Loamy-skeletal, mixed, superactive, calcareous Typic Cryaquents

TYPICAL PEDON: Vivid silt on a graminoid-covered depression in a glacial-valley floor, on a slope of 3 percent at an elevation of 44 m (When described on September 2, 2013, the soil was moist from the surface to a depth of 8 cm and wet from a depth of 8 to 150 cm.)

Oe--0 to 8 cm; moderately decomposed plant material; moderately acid (pH 5.9); clear smooth boundary

Cg1--8 to 28 cm; silt, gray (10YR 6/1) dry, dark greenish gray (10Y 4/1) moist; massive; slightly hard, friable, slightly sticky and nonplastic; common very fine and fine roots throughout; many very fine and fine irregular pores; 15 percent medium masses of oxidized iron, yellowish red (5YR 5/8) mois t; strongly effervescent (HCL, 1N); moderately alkaline (pH 7.9); clear smooth boundary

2Cg2--28 to 150 cm; very cobbly sandy loam, gray (10YR 6/1) dry, greenish gray (5GY 5/1) moist; massive; slightly hard, friable, slightly sticky and slightly plastic; common fine roots throughout; common very fine and fine irregular pores; 10 percent fine masses of oxidized iron, olive yellow (2.5Y 6/8) moist ; 10 percent subrounded gravel and 30 percent subrounded cobbles; strongly effervescent (HCL, 1N); moderately alkaline (pH 7.9)

TYPE LOCATION: Glacier Bay National Park and Preserve-Gustavus Area, Alaska; Hoonah-Angoon Census Area; latitude 58.8069569, longitude -136.1583022, datum WGS84 (coordinates determined by a GPS unit)

RANGE IN CHARACTERISTICS:
Mean annual soil temperature--1 to 7 degrees C
Soil moisture control section--wet (aquic conditions) within 25 cm of soil surface year round
Depth to redoximorphic concentrations--within 25 cm of soil surface
Other features--free carbonates, lithologic discontinuity

Particle-size control section
*Clay content--5 to 13 percent
*Total rock fragment content--35 to 60 percent

Oi or Oe horizon
Thickness--0 to 10 cm

Cg1 horizon
Hue--10YR to 10GY moist or dry
Value--3 to 6 moist, 5 to 7 dry
Chroma--1 or 2 moist or dry
Clay content--5 to 12 percent
Reaction (pH)--7.1 to 8.0
Effervescence--slightly effervescent, strongly effervescent
Thickness--15 to 25 cm

2Cg2 horizon
Hue--10YR to 5G moist or dry
Value--3 to 6 moist, 5 to 7 dry
Chroma--1 or 2 moist or dry
Clay content--5 to 13 percent
Total rock fragment content--35 to 60 percent
Gravel content--5 to 15 percent
Cobble content--25 to 35 percent
Reaction (pH)--6.9 to 7.9
Effervescence--slightly effervescent, strongly effervescent
Thickness--115 to 135 cm

COMPETING SERIES: None

GEOGRAPHIC SETTING:
Elevation--10 to 70 m
Climate--cool, moist summers; mild, wet winters
Mean annual precipitation--850 to 1850 mm
Mean annual air temperature--0 to 9 degrees C
Frost-free period--90 to 154 days

GEOGRAPHICALLY ASSOCIATED SOILS:
Drybay, Fossil--no aquic conditions within a depth of 150 cm (well drained) of soil surface; on similar landforms
Kaknau--cambic horizon; on adjacent hillslopes
Tyeen--no aquic conditions within a depth of 150 cm (well drained) of soil surface; on similar landforms

DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Depth to saturation in normal years--more than 5 cm year round
Flooding--none
Ponding--occasional, long periods
Saturated hydraulic conductivity (Ksat)--moderately high in C horizon, high in 2Cg horizon

USE AND VEGETATION:
Use--wildlife habitat, recreation, subsistence
Potential native vegetation--Sitka alder, water sedge, bluejoint, carex, field horsetail, variegated scouringrush, common woodrush, undergreen willow

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
*Ochric epipedon
*Aquic conditions--zone from 8 to 150 cm
*Free carbonates--zone from 8 to 150 cm
*Redoximorphic concentrations--zone from 8 to 150 cm
*Depth to lithologic discontinuity--28 cm
*Particle-size control section--zone from 33 to 108 cm

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National Cooperative Soil Survey
U.S.A.