LOCATION HARVEYCREEK             OR

Tentative Series
KLM/KMS
12/2024

HARVEYCREEK SERIES

Landscape--mountains, plateaus
Landform--mountain slopes, lava plateaus, low hills, canyons
Slope--0 to 70 percent
Parent material--colluvium derived from basalt, andesite, or rhyolite with an influence of volcanic ash in the surface
Mean annual precipitation--about 405 mm
Mean annual air temperature--about 6 degrees C
Depth class--moderately deep
Drainage class--well drained
Soil moisture regime--xeric
Soil temperature regime--frigid
Soil moisture subclass--typic

TAXONOMIC CLASS: Loamy-skeletal, isotic, frigid Vitrandic Argixerolls

TYPICAL PEDON: Harveycreek gravelly ashy sandy loam, forested

Oi--0 to 3 centimeters; slightly decomposed leaves, pine needles, grass and twigs; abrupt wavy boundary.

A--3 to 13 centimeters; gravelly ashy sandy loam; brown (7.5YR 5/3), dry, dark brown (7.5YR 3/2), moist; weak very fine and fine subangular blocky structure; slightly hard, very friable, nonsticky, nonplastic; common very fine and fine roots throughout; common very fine interstitial pores; 15 percent gravels; neutral (pH 6.6); clear wavy boundary.

AB--13 to 36 centimeters; gravelly ashy sandy loam; brown (7.5YR 5/3), dry, dark brown (7.5YR 3/2), moist; weak fine subangular blocky structure; slightly hard, friable, nonsticky, nonplastic; common very fine, fine, medium, and coarse roots throughout; common very fine interstitial pores; 20 percent gravels; neutral (pH 6.7); clear wavy boundary.

2Bt1--36 to 74 centimeters; very gravelly sandy clay loam; brown (7.5YR 5/4), dry, brown (7.5YR 4/3), moist; moderate medium subangular blocky structure; hard, firm, moderately sticky, slightly plastic; few very fine, fine, and medium roots throughout; few very fine and fine interstitial pores; 20 percent faint clay films on ped faces and surfaces along root channels; 5 percent cobbles and 35 percent gravels; neutral (pH 6.8); clear wavy boundary.

2Bt2--74 to 99 centimeters; very gravelly sandy clay loam; light brown (7.5YR 6/4), dry, brown (7.5YR 4/3), moist; moderate fine and medium subangular blocky structure; hard, firm, slightly sticky, slightly plastic; few very fine, fine, and medium roots throughout; few very fine and fine interstitial pores; 30 percent faint clay films on ped faces and surfaces along root channels; 10 percent cobbles and 45 percent gravels; neutral (pH 6.8); abrupt wavy boundary.

2R--99 centimeters; andesite bedrock.

TYPE LOCATION: Crook County, Oregon, in the NW1/4, NE1/4, NE of section 8, T. 13S, R 18E; Latitude 44.4605675, Longitude -120.5937271, WGS84 Datum, (coordinates determined from GPS)

RANGE IN CHARACTERISTICS:
Mean annual soil temperature--6 to 8 degrees C
Soil Moisture--usually moist, but dry 60 to 90 consecutive days following summer solstice in all parts between depths of 10 and 30 cm
Mollic epipedon--18 to 50 cm
Depth to lithic contact--50 to 100cm
Reaction--neutral throughout
Thickness of volcanic ash influenced layers--18 to 36 cm

Estimated properties of layers influenced by volcanic ash
*Ammonium oxalate extractable Al + Fe--0.2 to 0.5 percent
*0.02 to 2.0 mm fraction--greater than 30 percent
*Volcanic glass in the 0.02 to 2.0 mm fraction--15 to 40 percent
Particle-size control section
*Content of clay--20 to 35 percent
*Total fragments--35 to 70 percent
*Fragment types--andesite, basalt, rhyolite, welded tuff

A horizon
*Hue--7.5YR, 10YR
*Value--3 to 5 dry, 2 or 3 moist
*Chroma--2 or 3 moist or dry
*Fine earth texture--ashy sandy loam, ashy loam
*Clay--10 to 25 percent
*Sand--40 to 80 percent
*Organic matter--3 to 5 percent
*Total fragments--15 to 65 percent
*Gravel--10 to 35 percent
*Cobbles--0 to 25 percent
*Stones--0 to 25 percent

AB horizon
*Hue--7.5YR, 10YR
*Value--3 to 5 dry, 2 or 3 moist
*Chroma--2 or 3 moist, 3 to 5 dry
*Fine earth texture--ashy sandy loam, ashy loam
*Clay--10 to 25 percent
*Sand--40 to 80 percent
*Organic matter--2 to 4 percent
*Total fragments--15 to 55 percent
*Gravel--10 to 35 percent
*Cobbles--0 to 25 percent
*Stones--0 to 25 percent
*Thickness--combined thickness of A and AB horizons 18 to 36 cm (Not all pedons have an AB horizon)

2Bt horizons
*Hue--5YR, 7.5YR, 10YR
*Value--3 or 4 moist, 4 to 6 dry
*Chroma--2 to 4 moist and dry
*Fine earth texture--sandy clay loam, clay loam
*Clay--20 to 35 percent
*Sand--25 to 60 percent
*Organic matter--0.5 to 2.0 percent
*Total fragments--35 to 70 percent
*Gravel--20 to 45 percent
*Cobbles--5 to 30 percent
*Combined thickness--14 to 80 cm

COMPETING SERIES:
Barneycreek--no lithic contact within a depth of more than 150 cm (very deep)
Getaway--100 to 150 cm or more (deep, very deep) to a lithic contact (basalt, andesite, andesitic basalt)
Klickson--100 to 150 cm or more (deep, very deep) to a lithic contact (basalt)
Klicker--averages less than 40 percent sand in surface horizons
Larabee--averages less than 40 percent sand in surface horizons; dry 45 to 60 consecutive days; acid oxalate Al plus 1/2 Fe of 0.8 to 1.5 percent
Nerrad--dry 45 to 60 days following summer solstice
Millerflat, Ryespur--no lithic contact within a depth of more than 150 cm
Stemilt--100 to 150 cm or more (deep, very deep) to a lithic contact (basalt, andesite)
Sycreek--89 to 114 cm (moderately deep, deep) to densic material
Wileyflat--contains channers and flagstone fragments of rhyolite; dry 75 to 90 days following summer solstice

GEOGRAPHIC SETTING:
Elevation-- to m
Climate--cool, moist winters and warm, dry summers
Mean annual precipitation--350 to 560 mm
Mean annual air temperature--4 to 7 degrees C
Frost-free period--50 to 100 days

GEOGRAPHICALLY ASSOCIATED SOILS:
Anatone,

DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Drainage class--well drained
Saturation during normal years--none
Flooding--none
Ponding--none
Saturated hydraulic conductivity (Ksat)--moderately high

USE AND VEGETATION:
Use--Timber production and wildlife habitat
Native vegetation--ponderosa pine, Douglas-fir, bluebunch wheatgrass, Idaho fescue, elk sedge, Oregon grape, mountain big sagebrush

DISTRIBUTION AND EXTENT: Central Oregon, Ochoco Mountains, MLRA43C. The soil is of moderate extent

SOIL SURVEY REGIONAL OFFICE (SSRO) RESPONSIBLE: Bozeman, Montana

SERIES PROPOSED: Crook County, Oregon; 2024

REMARKS:
Diagnostic horizons and other features in this pedon
*Mollic epipedon--3 to 36 cm
*Argillic horizon--36 to 99 cm
*Depth to lithic contact--99 cm
*Vitrandic feature--zone from 3 to 36 cm


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National Cooperative Soil Survey
U.S.A.