LOCATION LOLLAH WA
Tentative Series
IRD. MGR/AJF/MPR
01/2025
LOLLAH SERIES
Landscape--mountains
Landform--cirques and glacial valley walls
Slope--0 to 100 percent
Parent material--colluvium from metasedimentary rock
Mean annual precipitation--about 3500 mm
Mean annual air temperature--about 4 degrees C
Depth class--very deep
Drainage class--well drained
Soil moisture regime--udic
Soil temperature regime--cryic
Soil moisture subclass--typic
TAXONOMIC CLASS: Loamy-skeletal, isotic Typic Humicryepts
TYPICAL PEDON: Lollah very gravelly silt loam on a southeast facing, non-forested cirque with a slope of 40 percent and an elevation of 1500m. (The soil was moist throughout when described.)
Oi--0 to 1 cm; slightly decomposed plant material; abrupt wavy boundary
A--1 to 17 cm; brown (10YR 4/3) dry, very dark brown (10YR 2/2) very gravelly silt loam; moderate fine granular structure; soft, very friable, slightly sticky, slightly plastic; many very fine and fine roots; many very fine and fine irregular pores; 35 percent gravel, 5 percent cobbles; very strongly acid (pH 4.6); abrupt wavy boundary
Bw1--17 to 40 cm; brown (10YR 5/3) dry, very dark brown (10YR 2/2) very gravelly silt loam; moderate fine subangular blocky structure; soft, very friable, slightly sticky, slightly plastic; many very fine and fine roots; common very fine irregular and interstitial and common fine irregular pores; 40 percent gravel, 5 percent cobbles; very strongly acid (pH 4.7); clear wavy boundary
Bw2--40 to 70 cm; yellowish brown (10YR 5/4) dry, brown (10YR 4/3) extremely gravelly loam; weak very fine subangular blocky structure; soft, very friable, slightly sticky, slightly plastic; many very fine and fine roots; few very fine irregular and common fine, medium, and coarse interstitial pores; 50 percent gravel, 10 percent cobbles; very strongly acid (pH 4.8); abrupt wavy boundary
Bw3--70 to 150 cm; brown (10YR 5/3) dry, brown (10YR 4/3) extremely gravelly loam; weak very fine subangular blocky structure; soft, very friable, nonsticky, slightly plastic; common very fine roots; few very fine irregular and common fine, medium, and coarse interstitial pores; 55 percent gravel, 15 percent cobbles; very strongly acid (pH 4.8); clear smooth boundary
TYPE LOCATION: Clallam County, Washington; near 7 Lakes Junction on the Highdivide trail in Olympic National Park
Latitude--47.913005
Longitude-- -123.793223
Datum--WGS84
RANGE IN CHARACTERISTICS:
Mean annual soil temperature--0 to 7 degrees C
Umbric epipedon thickness--18 to 40 cm
Particle-size control section
*Clay content--8 to 18 percent
*Total rock fragment content--45 to 75 percent
*Gravel content--35 to 60 percent
*Cobble content--0 to 20 percent
*Stone content--0 to 15 percent
Oi horizon
Thickness--0 to 4 cm
A horizon
Value--3 or 4 dry, 2 or 3 moist
Chroma--1 to 3 dry or moist
Fine-earth texture--silt loam, loam, sandy loam
Clay content--8 to 18 percent
Total rock fragment content--25 to 45 percent
Gravel content--20 to 40 percent
Cobble content--0 to 15 percent
Reaction--4.5 to 5.5
Thickness--10 to 20 cm
Bw1 horizon
Value--3 to 5 dry, 2 or 3 moist
Chroma--1 to 3 dry or moist
Fine-earth texture--silt loam, loam, sandy loam
Clay content--8 to 18 percent
Total rock fragment content--35 to 60 percent
Gravel content--30 to 50 percent
Cobble content--0 to 20 percent
Stone content--0 to 15 percent
Reaction--4.5 to 5.5
Thickness--20 to 35 cm
Bw2 and Bw3 horizons
Value--4 or 5 dry or moist
Chroma--2 to 4 dry or moist
Fine-earth texture--silt loam, loam, sandy loam
Clay content--8 to 18 percent
Total rock fragment content--45 to 75 percent
Gravel content--35 to 60 percent
Cobble content--0 to 20 percent
Stone content--0 to 15 percent
Reaction--4.5 to 5.5
Combined thickness--more than 100 cm
COMPETING SERIES:
Bigelow--has a very hard, massive C horizon
Bross--mean annual soil temperature is 1 degree C
Buchia has--values of 3 or less moist throughout the entirety of the soil which meets the requirements for an umbric epipedon
Causewa,
Crannler,
Henline,
Hossick,
Mirror and
Nagyagat--lithic contact within 50 to 100 cm of the soil surface
Iprugalet--lithic contact within 100 to 150 cm of the soil surface
Penitente--mean annual soil temperature is less than 0 degrees C
Tikchik--has a slightly hard, massive C horizon
GEOGRAPHIC SETTING:
Elevation--900 to 1900 m
Climate--cool, dry summers; cold, wet winters
Mean annual precipitation--1500 to 4000 mm
Mean annual air temperature--0 to 6 degrees C
Frost-free period--30 to 90 days
GEOGRAPHICALLY ASSOCIATED SOILS:
Grandpass--no umbric epipedon; similar landforms
Buckinghorsecreek--saturation within 25 to 50 cm of the mineral soil surface; drainageways on similar landforms
Hungrycreek--no umbric epipedon, andic soil properties; similar landforms
Allincreek--lithic contact within 25 to 50 cm of the soil surface; similar landforms
DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Drainage class--well drained
Saturation in normal years--none
Flooding--none
Ponding--none
Saturated hydraulic conductivity (Ksat)--high or very high throughout
USE AND VEGETATION:
Use--wildlife habitat, recreation
Potential natural vegetation--Olympic mountain aster, broadleaf lupine, showy sedge, Roemer's fescue; dry sites may include common juniper, spreading phlox, common yarrow, Roemer's fescue
DISTRIBUTION AND EXTENT: Olympic Mountains, Washington; MLRA 1; moderate extent
SOIL SURVEY REGIONAL OFFICE (SSRO) RESPONSIBLE: Bozeman, Montana
SERIES PROPOSED: Olympic National Park, Clallam County, Washington 2023; name from Lola creek in Olympic National Park
REMARKS:
Diagnostic horizons and other features in this pedon:
*Particle-size control section--zone from 26 to 101 cm
*Umbric epipedon--zone from 1 to 40 cm
*Cambic horizon--zone from 40 to 150 cm
National Cooperative Soil Survey
U.S.A.