LOCATION HANSBERRY               OR

Tentative Series
SCW/KLM
12/2024

HANSBERRY SERIES

Landscape--plateaus
Landform--hillslopes, fan remnants, headwalls
Slope--40 to 70 percent
Parent Material--colluvium derived from flaggy welded tuff or rhyolite with an influence of volcanic ash in the upper part
Mean annual precipitation--about 350 mm
Mean annual air temperature--about 10 degrees C
Depth class--very deep
Drainage class--well drained
Soil moisture regime--xeric
Soil temperature regime--mesic
Soil moisture subclass--typic

TAXONOMIC CLASS: Fine-loamy, mixed, superactive, mesic Vitrandic Argixerolls

TYPICAL PEDON: Hansberry ashy loam, rangeland, on a 55 percent, north facing slope at an elevation of 950 m (When described on August 19, 2015, the soil was dry throughout.)

Oi--0 to 3 cm; partially decomposed moss, twigs, and roots

A--3 to 28 cm; ashy loam, grayish brown (10YR 5/2) dry, very dark grayish brown (10YR 3/2) moist,; moderate coarse subangular blocky structure; soft, very friable, nonsticky and nonplastic; few fine and common very fine roots; few fine and common very fine irregular pores; neutral (pH 7.2); gradual smooth boundary

AB--28 to 51 cm; ashy fine sandy loam, light brownish gray (10YR 6/2) dry, dark grayish brown (10YR 4/2) moist,; moderate coarse subangular blocky structure; soft, very friable, nonsticky and nonplastic; few fine and very fine roots; few very fine tubular pores; moderately alkaline (pH 8.0); clear wavy boundary

2Bt--51 to 69 cm; channery sandy clay loam, grayish brown (10YR 5/2) dry, very dark grayish brown (10YR 3/2) moist; moderate medium subangular blocky structure; moderately hard, firm, very sticky and moderately plastic; few very fine roots; few very fine tubular pores; many distinct clay films on ped faces; 15 percent channers; moderately alkaline (pH 8.1); clear wavy boundary

2Bk--69 to 150 cm; very channery clay loam, brown (10YR 5/3) dry, dark brown (10YR 3/3) moist; moderate medium subangular blocky structure; slightly hard, firm, moderately sticky and moderately plastic; common calcium carbonate masses on bottom of rock fragments; 10 percent flagstones and 25 percent channers; strongly effervescent; moderately alkaline (pH 8.2)
TYPE LOCATION: Grant County, Oregon, about 3.60 km east of the town of Mt. Vernon; about 633 m west and 706 m north of the SE corner of section 26, T. 13 S., R. 30 E.
Latitude-- 44.40962
Longitude-- -119.07079
Datum--WGS84 (coordinates determined with a GPS)
RANGE IN CHARACTERISTICS:
Mean annual soil temperature--10 to 12 degrees C
Soil moisture--dry for 70 to 90 days in the four months following the summer solstice
Depth to bedrock--greater than 150cm
Mollic epipedon--25 to 50 cm thick
Argillic horizon--15 to 50 cm thick
Depth to secondary carbonates--50 to 100 cm

Volcanic ash surface:
18 to 36 cm thick
Volcanic glass content--20 to 40 percent
Ammonium oxalate Al plus Fe--0.4 to 1.0 percent

Particle size control section:
Clay content--27 to 35 percent
Total rock fragment content--5 to 35 percent
Rock fragment type--typically indurated channers and flagstones of rhyolitic welded tuff

A horizon
Value--4 or 5 dry, 2 or 3 moist
Chroma--2 or 3 dry or moist
Fine earth texture-- ashy loam, ashy sandy loam
Clay content--15 to 25 percent
Sand content--35 to 60 percent
Organic matter content--2 to 4 percent
Total rock fragments--0 to 30 percent
Channers--0 to 30 percent
Flagstones--0 to 30 percent
Stones--0 to 10 percent
Reaction--neutral to slightly alkaline

AB horizon
Value--5 or 6 dry, 3 or 4 moist
Chroma--2 or 3 dry or moist
Fine earth texture-- ashy loam, ashy fine sandy loam, ashy sandy loam
Clay content--15 to 25 percent
Sand content--35 to 60 percent
Organic matter content--1 to 3 percent
Total rock fragments--0 to 20 percent
Channers--0 to 20 percent
Flagstones--0 to 10 percent
Reaction--slightly alkaline to moderately alkaline

2Bt horizon
Value--4 or 5 dry, 2 or 3 moist
Chroma--2 or 3 dry or moist
Fine earth texture-- sandy clay loam or clay loam
Clay content--25 to 35 percent
Sand content--30 to 60 percent
Organic matter content--0.5 to 1.5 percent
Total rock fragments--5 to 35 percent
Channers--5 to 35 percent
Flagstones--0 to 10 percent
Reaction--slightly alkaline to moderately alkaline

2Bk horizon
Value--5 or 6 dry, 3 or 4 moist
Chroma--2 or 3 dry or moist
Fine earth texture-- loam, clay loam, or sandy clay loam
Clay content--20 to 35 percent
Sand content--30 to 60 percent
Organic matter content--0.25 to 1.0 percent
Total rock fragments--20 to 60 percent
Channers--20 to 60 percent
Flagstones--0 to 20 percent
Reaction--slightly alkaline to moderately alkaline

COMPETING SERIES:
All of the following series lack flat rock fragments (flagstones and channers) in the series control section:
Buckbay, Morical, Mozen, Shushuskin--lithic or paralithic contact at 50 to 100 cm
Georgecreek, Jauriga, Teewee, Wakamuticham--lithic or paralithic contact at 100 to 150 cm
Hillcreek, Pachneum, Tolius, Volinger, Wenner, Wockum--lack secondary carbonates
Ralock, Rollinger, Vanderbilt-mollic epipedons are greater than 50 cm thick

GEOGRAPHIC SETTING:
Elevation--850 to 1040 m
Climate--cool, wet winters and hot, dry summers
Mean annual precipitation--305 to 405 mm
Mean annual air temperature 8 to 10 degrees C
Frost-free period--80 to 120 days
Aspect--north facing slopes
Lithology--welded tuff of the Rattlesnake Formation and soft tuffaceous sediments of the Mascall Formation

GEOGRAPHICALLY ASSOCIATED SOILS:
Balder--25 to 50 cm to paralithic contact
Belshaw--average more than 35% clay in the PSCS
Eaglespring--found in complex with Hansberry and average more than 35% fragments in the control section
Hack--occur on footslopes and fans
Wylie--average more than 35% clay in the PSCS and are 25 to 50 cm to paralithic contact

DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Drainage--well drained
Saturated hydraulic conductivity (Ksat)--high in in ash influenced horizons, moderately high to high in argillic horizons

USE AND VEGETATION:
Use--livestock grazing, wildlife habitat
Vegetation--bluebunch wheatgrass, Idaho fescue, western juniper

DISTRIBUTION AND EXTENT:
East-central Oregon; MLRA 10; small extent

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

SERIES PROPOSED:
Grant County, Oregon 2/2016; The name is coined.

REMARKS:
Diagnostic horizons and features in this pedon are:
Particle size control section--51 to 69 cm
Mollic epipedon--3 to 28 cm
Vitrandic feature--3 to 51 cm
Argillic horizon--51 to 69 cm
Xeric moisture regime

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National Cooperative Soil Survey
U.S.A.