LOCATION GOLSOVIA                AK

Established Series
MPS/SAS
05/2022

GOLSOVIA SERIES

Landscape--hills, valleys
Landform--hillslopes, valley sides, escarpments
Slope--25 to 90 percent
Parent material--gravelly colluvium over residuum
Mean annual precipitation--about 445 mm
Mean annual air temperature--about -3 degrees C
Depth class--deep
Drainage class--well drained
Soil moisture regime--udic
Soil temperature regime--cryic
Soil moisture subclass--typic

TAXONOMIC CLASS: Loamy-skeletal, isotic Typic Dystrocryepts

TYPICAL PEDON: Golsovia silt on a south southeast facing linear, linear backslope, on a slope of 35 percent at an elevation of 139 m (The soil was moist throughout the profile when described on August 21, 2019.)

Oe--0 to 13 cm; moderately decomposed plant material, dark gray (10YR 4/1) dry, black (10YR 2/1) moist; many very fine and fine, and common medium roots; 8 percent gravel; extremely acid (pH 4.2); clear wavy boundary

A--13 to 24 cm; highly organic silt, dark gray (10YR 4/1) dry, black (10YR 2/1) moist; weak fine subangular blocky structure; very friable, nonsticky, nonplastic; nonsmeary; many very fine and common fine and medium roots; common very fine and fine pores; 10 percent gravel; extremely acid (pH 3.9); clear wavy boundary

Bw/A --24 to 52 cm; extremely gravelly silt loam, 65 percent light yellowish brown (10YR 6/4) dry, dark yellowish brown (10YR 4/4) moist, and 30 percent dark grayish brown (10YR 4/2) dry, very dark brown (10YR 2/2) moist, and 5 percent brownish yellow (10YR 6/6) dry, 5 percent dark yellowish brown (10YR 4/6) moist; weak very fine granular structure; very friable, nonsticky, nonplastic; moderately smeary; common very fine and common fine roots; common very fine and common fine pores; 35 percent gravel, 30 percent channers; very strongly acid (pH 4.6); clear smooth boundary

C--52 to 125 cm; very gravelly sandy loam, light brownish gray (2.5Y 6/2) dry, dark grayish brown (2.5Y 4/2) moist; massive; very friable, nonsticky, nonplastic; nonsmeary; common very fine roots; 10 percent channers, 35 percent ; strongly acid (pH 5.1)

Cr--125 to 150 cm; paralithic bedrock

TYPE LOCATION: Nome Census Area, Alaska, latitude 63.9177560 longitude -160.7741240, datum WGS84 (Coordinates determined with a GPS unit)

RANGE IN CHARACTERISTICS:
Mean annual soil temperature--0 to 4 degrees C
Soil moisture control section--dry less than 45 consecutive days in June through October
Thickness of ochric epipedon--7 to 28 cm
Thickness of cambic horizon--20 to 60 cm

Particle Size Control Section:
*Clay--12 to 18 percent
*Total fragments--50 to 85 percent gravels, cobbles, channers
*Sodium fluoride pH--8.4 to 11.6
*Ratio of 1500 kPa water to measured clay--0.6 to 6.0

Oe horizon
Thickness--4 to 13 cm

A horizon
Hue--7.5YR or 10YR
Value--2 to 3 moist, 4 or 5 dry
Chroma-1 to 3
Fine-earth texture--silt, silt loam
Clay--6 to 15 percent
Sand--8 to 30 percent
Organic carbon--5 to 12 percent
Total rock fragment content--0 to 10 percent
Total gravel content--0 to 10 percent
Total cobble content--0 to 5 percent
Reaction--3.9 to 4.9
Thickness--3 to 15 cm

Bw/A
Hue--7.5YR or 10YR
Value--2 to 4 moist, 4 to 6 dry
Chroma--1 to 4
Clay--6 to 17 percent
Sand--10 to 40 percent
Organic carbon--3 to 5 percent
Total rock fragment content--35 to 65 percent
Total gravel content--10 to 35 percent
Total channer content--0 to 30 percent
Total cobble content--0 to 40 percent
Reaction--4.6 to 5.8
Thickness--20 to 60 cm

C horizon
Hue--10YR or 2.5Y
Value--4 or 5 moist, 6 or 7 dry
Chroma--2 to 4
Fine-earth texture--sandy loam, silt loam, loam
Clay--10 to 20 percent
Sand--30 to 70 percent
Organic carbon--0.5 to 2 percent
Total rock fragment content--35 to 85 percent
Total gravel content--35 to 85 percent
Total cobble content--0 to 10 percent
Reaction--4.9 to 5.9
Thickness--60 to 100cm

Cr horizon

COMPETING SERIES:
* Kanguq--moderately deep to paralithic contact, gravelly colluvium over gravelly residuum
* Cascadecreek--no paralithic contact, organic material over coarse-loamy earth spread deposits over gravelly colluvium
* Stuyahok--no paralithic contact, drift
* Sharp--deep to lithic contact, residuum and colluvium
* Bensley--no paralithic contact, glacial till
* Endlich--moderatly deep to lithic contact, slope alluvium or colluvium derived from granite, andesite, rhyolite, breccia, or tuff
* Fallriver--no paralithic contact, till and colluvium derived from granitic rocks, gneiss, and schist, albic horizon, 15 to 30 percent mica in particle-size control section
* Henson--no paralithic contact, valley fills, slope alluvium, alluvium, and colluvium derived from andesite, rhyolite, breccia, or tuff, 18 to 35 percent clay in particle-size control section

GEOGRAPHIC SETTING:
*Elevation--5 to 550 m
*Climate--warm, moist summers; cold, dry winters
*Mean annual precipitation--305 to 585 mm
*Mean annual air temperature-- -5 to -1 degrees C
*Frost-free period--55 to 90 days

GEOGRAPHICALLY ASSOCIATED SOILS:
* Cilla--gelic materials present, hillslopes
* Teacreek--folistic epipedon; hillslopes and mountain slopes

DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
*Drainage class--well drained
*Saturated hydraulic conductivity (Ksat)--very high in the surface organic layer, moderately high in the mineral surface layer and substratum, moderately high to high in the subsoil

USE AND VEGETATION:
Use--wildlife habitat, recreation, subsistence
Potential native vegetation--Kenai birch, white spruce, Siberian alder, arctic starflower, black crowberry, bog blueberry, bluejoint, greygreen reindeer lichen, reindeer lichen, polytrichum moss, Schreber's big red stem moss, moss, resin birch, feltleaf willow, beaverd spirea, fireweed, narrowleaf arnica, fragrant woodfern, western oakfern, bluegrass, felt lichen, splendid feather moss, star reindeer lichen, lichen, grayleaf willow, lingonberry, marsh Labrador tea, Blandow's helodium moss, stiff clubmoss, red currant, field horsetail

DISTRIBUTION AND EXTENT: Nulato Hills-Southern Seward Peninsula Highlands, Alaska; MLRA 240; moderate extent

SOIL SURVEY REGIONAL OFFICE (SSRO) RESPONSIBLE: WASILLA, ALASKA

SERIES ESTABLISHED: Nulato Hills BLM area, Nome Census Area, Alaska; 2021

REMARKS:
Diagnostic horizons and features recognized in this pedon
*Particle-size control section--zone from 38 to 113 cm
*Ochric epipedon--zone from 0 to 24 cm
*Cambic horizon--zone from 24 to 52 cm
*Paralithic contact--125 cm

---

National Cooperative Soil Survey
U.S.A.