LOCATION GEIKIE                  AK

Established Series
IRD. DKM/NDP/SCD
05/2022

GEIKIE SERIES

Landscape--outwash plains
Landform--outwash deltas
Slope--0 to 15 percent
Parent material--outwash
Mean annual precipitation--about 1400 mm
Mean annual air temperature--about 5 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 over sandy or sandy-skeletal, mixed, superactive Typic Haplocryepts

TYPICAL PEDON: Geikie loam on an outwash delta, on a slope of 1 percent at an elevation of 19 m (When described on August 2, 2014, the soil was moist throughout.)

A--0 to 7 cm; loam, brown (10YR 5/3) dry, dark brown (10YR 3/3) moist; 5 percent fine strong brown (7.5YR 5/6) mottles; strong medium granular structure; soft, very friable, slightly sticky and slightly plastic; common very fine, fine, and medium roots throughout; common very fine and fine irregular pores; strongly acid (pH 5.3); clear smooth boundary

Bw--7 to 32 cm; loam, light olive brown (2.5Y 5/3) dry, dark olive brown (2.5Y 3/3) moist; moderate fine subangular blocky structure; slightly hard, friable, slightly sticky and slightly plastic; common very fine, fine, medium, and coarse roots; common very fine and fine irregular pores; strongly acid (pH 5.5); clear smooth boundary

C--32 to 48 cm; silt loam, pale yellow (2.5Y 8/3) dry, light yellowish brown (2.5Y 6/3) moist; moderate medium subangular blocky structure; moderately hard, firm, slightly sticky and slightly plastic; common medium and fine roots; common very fine and fine irregular pores; moderately acid (pH 5.6); clear smooth boundary

2C1--48 to 120 cm; variegated sand; massive; soft, very friable, nonsticky and nonplastic; few very fine and fine irregular pores; 5 percent gravel; strongly effervescent; strongly alkaline (pH 8.5); gradual wavy boundary

2C2--120 to 150 cm; variegated gravelly sand; single grain; loose, nonsticky and nonplastic; few very fine irregular pores; 25 percent gravel; violently effervescent; strongly alkaline (pH 8.6)

TYPE LOCATION: Glacier Bay National Park and Preserve-Gustavus Area, Alaska; Hoonah-Angoon Census Area; latitude 58.4132791, longitude -135.7280414, 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)
Other features--free carbonates

Particle-size control section
*Clay content--0 to 20 percent
*Total rock fragment content--0 to 45 percent

A horizon
Value--3 to 5 moist, 5 to 7 dry
Chroma--3 to 6 moist or dry
Fine-earth texture--loam, silt loam
Clay content--8 to 12 percent
Reaction (pH)--5.3 to 5.8
Thickness--5 to 15 cm

Bw horizon
Hue--10YR to 5Y moist or dry
Value--3 to 5 moist, 5 to 6 dry
Chroma--3 to 6 moist or dry
Fine-earth texture--loam, silt loam
Clay content--8 to 15 percent
Reaction (pH)--5.3 to 6.2
Thickness--15 to 45 cm

C horizon
Hue--10YR to 5Y moist or dry; variegated
Value--3 to 6 moist, 5 to 7 dry
Chroma--3 to 6 moist or dry
Fine-earth texture--silt loam, loam
Clay content--12 to 20 percent
Reaction (pH)--5.5 to 7.0
Thickness--15 to 45 cm

2C1 horizon
Hue--10YR to 5Y moist or dry, variegated
Value--3 to 5 moist, 5 to 7 dry
Chroma--3 to 6 moist or dry
Fine-earth texture--sand, fine sand
Clay content--0 to 2 percent
Gravel content--0 to 10 percent
Reaction (pH)--7.0 to 8.7
Thickness--60 to 90 cm

2C2 horizon
Hue--10YR to 5Y moist or dry, variegated
Value--3 to 5 moist, 5 to 7 dry
Chroma--3 to 6 moist or dry
Fine-earth texture--sand, coarse sand, fine sand
Clay content--0 to 2 percent
Gravel content--15 to 35 percent
Reaction (pH)--7.0 to 8.7
Thickness--20 to 40 cm

COMPETING SERIES:
Lupine--pH of 5.6 to 6.0 throughout particle-size control section; no free carbonates
Maclaren--pH of 5.6 to 6.5 throughout particle-size control section; no free carbonates
Sawmill Creek--60 to 90 percent rock fragments in lower part of particle-size control section

GEOGRAPHIC SETTING:
Elevation--1 to 45 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:
Bartlettcove--spodic horizon; on adjacent landforms
Gustavus--100 to 150 cm (well drained) to aquic conditions; on similar landforms
Ibach--umbric epipedon; on adjacent landforms
Lamplugh, Perouse--saturation and aquic conditions within 25 cm of soil surface; on similar landforms
Scidmore--redoximorphic features within 25 cm of soil surface; on similar landforms

DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Drainage class--well drained
Depth to saturation in normal years--more than 150 cm year round
Saturated hydraulic conductivity (Ksat)--high in A and Bw horizons, moderately high in C horizon, very high in 2C horizon

USE AND VEGETATION:
Use--wildlife habitat, recreation
Potential natural vegetation--Sitka alder, rattlesnake plantain, splendid feather moss, heartleaf twayblade, sidebells wintergreen, Schreber's big red stem moss, Alaska huckleberry, Sitka spruce, western hemlock

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 in this pedon
*Ochric epipedon
*Cambic horizon--zone from 7 to 32 cm
*Free carbonates--zone from 48 to 150 cm
*Lithologic discontinuity--zone from 48 to 150 cm
*Particle-size control section--zone from 25 to 100 cm

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National Cooperative Soil Survey
U.S.A.