LOCATION DAILYBASIN              MT

Tentative Series
Rev. TDL/EMM
07/2012

DAILYBASIN SERIES

The Dailybasin series consists of very deep, well drained soils that formed in alluvium, colluvium, or till from sedimentary and igneous rock sources. Dailybasin soils are on mountain slopes, foothills, moraines, landslides, alluvial fans, outwash fans, and stream terraces. Permeability is moderate. Slopes range from 2 to 45 percent. The average annual precipitation is about 22 inches and the average annual temperature is about 38 degrees F.

TAXONOMIC CLASS: Loamy-skeletal, mixed, superactive Pachic Argicryolls

TYPICAL PEDON: Dailybasin very cobbly loam, in rangeland on a north-east facing slope of 25 percent at 7,540 feet elevation. (Colors are for air dry soil unless otherwise stated. When described on July 1, 1999 the soil was dry throughout).

A--0 to 8 inches; very dark grayish brown (10YR 3/2) very cobbly loam, black (10YR 2/1) moist; moderate very fine and fine granular structure; slightly hard, very friable, nonsticky and nonplastic; many very fine and fine, few medium and many very fine roots; many very fine irregular pores; 20 percent gravel, 25 percent cobbles and 10 percent stones; neutral (pH 6.8); clear wavy boundary. (6 to 19 inches thick)

Bt1--8 to 17 inches; brown (10YR 4/3) very cobbly loam, dark brown (10YR 3/3) moist; weak fine and medium subangular blocky structure; slightly hard, very friable, slightly sticky and slightly plastic; many very fine and fine and few medium roots; common very fine irregular pores; 10 percent patchy faint clay films; 20 percent gravel, 30 percent cobbles and 10 percent stones; neutral (pH 6.9); clear wavy boundary.

Bt2--17 to 30 inches; dark yellowish brown (10YR 4/4) very cobbly loam, brown (10YR 4/3) moist; weak fine and medium subangular blocky structure; slightly hard, very friable, slightly sticky and slightly plastic; common very fine and fine roots; common very fine irregular pores; 10 percent patchy faint clay films; 25 percent gravel and 30 percent cobbles; neutral (pH 7.0); clear wavy boundary. (combined thickness of Bt horizons is 15 to 35 inches)

BC--30 to 60 inches; olive brown (2.5Y 4/3), very gravelly sandy loam, dark olive brown (2.5Y 3/3) moist; weak medium subangular blocky structure; slightly hard, very friable, slightly sticky and nonplastic; few very fine and fine roots; many very fine irregular pores; 35 percent gravel and 15 percent cobbles; neutral (pH 7.0).

TYPE LOCATION: 1200 feet north and 800 feet east of south corner of Section 10, Township 7S, Range 8E

RANGE IN CHARACTERISTICS:
Average annual soil temperature - 36 to 40 degrees F.
Moisture control section - 4 to 12 inches
Mollic epipedon thickness - 16 to 24 inches
Depth to argillic horizon - 6 to 20 inches
Particle-size control section - 35 to 60 percent rock fragments, 20 to 35 percent clay
Soil phases - stony or extremely stony

A horizon
Value - 3 or 4 dry, 1 or 2 moist
Chroma - 1 or 2, dry or moist
Texture - sandy loam or loam
Clay content - 15 to 25 percent
Rock fragments - 15 to 55 percent -- 5 to 30 percent gravel, 5 to 25 percent cobbles and 0 to 10 percent stones
Reaction (pH) - 6.6 to 7.3

Bt horizons
Value - 3 to 5 dry, 3 or 4 moist
Chroma - 3 to 6, dry or moist
Texture - loam or clay loam
Clay content - 20 to 35 percent
Rock fragments - 35 to 60 percent -- 15 to 40 percent gravel, 5 to 30 percent cobbles, 0 to 5 percent stones
Reaction (pH) - 6.6 to 7.4

BC horizon (where present)
Hue - 10YR or 2.5Y
Value - 4 or 5 dry, 3 or 4 moist
Chroma - 2 to 4, dry or moist
Texture - sandy loam, clay loam or loam
Clay content - 15 to 30 percent
Rock fragments - 35 to 60 percent -- 20 to 40 percent gravel, 5 to 30 percent cobbles, 0 to 5 percent stones
Reaction (pH) - 6.6 to 7.3

C horizon (where present)
Hue - 10YR or 2.5Y
Value - 5 or 6 dry, 3 or 4 moist
Chroma - 2 to 4 dry or moist
Texture - sandy loam or loam
Clay content - 12 to 27 percent
Rock fragments - 35 to 60 percent -- 20 to 40 percent gravel, 5 to 30 percent cobbles, 0 to 5 percent stones
Reaction (pH) - 6.6 to 7.3

COMPETING SERIES:
Angelwhine (CA) - has a xeric soil moisture regime.

Aspetill (CA) - has a xeric soil moisture regime.

Badwater (WY) - has an argillic horizon that is dominated by boulders.

Bickmore (UT) - has a lithic contact at 20 to 40 inches.

Bluebell (NV) - has a lithic contact at 20 to 40 inches.

Booneville (ID) - has an O horizon and contains basalt or welded tuff fragments in the particle sized control section.

Buena Vista (CO) - has a lithic contact at 20 to 40 inches.

Dab (NV) - has a xeric soil moisture regime and averages 60 to 80 percent rock fragments in the particle-size control section.

Delhew (NV) - has a xeric soil moisture regime and has less than 18 percent clay in the particle-size control section.

Hawkinspeak (CA) - has a lithic contact at 20 to 40 inches.

Igor (WY) - has less than 15% clay in the BC horizon.

Keman (ID) - has a xeric soil moisture regime.

Littlemud (NV) - has a lithic contact at 20 to 40 inches.

Lostcannon (CA) - has a xeric soil moisture regime and has less than 18 percent clay in the particle-size control section.

Monibasin (CA) - has a xeric soil moisture regime.

Panin (NV) - has a lithic contact at 20 to 40 inches.

Parkalley (ID) - has an average summer soil temperature greater than 55 degrees F. and is dominated by rhyolitic tuff flagstones in the argillic horizon.

Parkay (ID) - has a xeric soil moisture regime.

Rangertaft (NV) - has a lithic contact at 20 to 40 inches.

Redbird (SD) - has carbonates at a depth of 14 to 26 inches.

Rutherford (ID) - has a lithic contact at 20 to 40 inches.

Sweetmount (CA) - has a paralithic contact at 40 to 60 inches and has a xeric soil moisture regime.

Woodhurst (MT) - has a lithic contact at 20 to 40 inches.

GEOGRAPHIC SETTING:
Landform - mountain slopes, foothills, moraines, landslides, alluvial fans, outwash fans and stream terraces.
Elevation - 4,900 to 8,000 feet.
Slope - 2 to 45 percent.
Parent material - alluvium, colluvium, or till from sedimentary rock sources.
Climate - long, cold winters; cool, moist springs; short summers.
Mean annual precipitation - 18 to 25 inches.
Mean annual air temperature - 34 to 38 degrees F.
Frost-free period - 50 to 70 days.

GEOGRAPHICALLY ASSOCIATED SOILS: These are the Adel and Libeg series. Adel soils are pachic, fine loamy and are on alluvial fans, stream terraces, hills, drainageways and swales. Libeg soils have mollic epipedons that are 4 to 15 inches thick and are on mountains, alluvial fans, stream terraces, alpine moraines, hills, escarpments, outwash plains, avalanche chutes, and landslides.

DRAINAGE AND PERMEABILITY: Well drained; medium to rapid runoff; moderate permeability.

USE AND VEGETATION: Dailybasin soils are used mainly for rangeland. Dominant natural vegetation is Richardsons needlegrass, bluebunch wheatgrass, Columbia needlegrass, Idaho fescue, forms and shrubs with some areas having basin wildrye and big sagebrush.

DISTRIBUTION AND EXTENT: Dailybasin soils are of small extent in south western Montana. MLRA 43B.

MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Bozeman, Montana

SERIES PROPOSED: Park County, Montana, 2005. Dailybasin soils are named after a nearby geographical feature on the Dome Mountain Quadrangle.

REMARKS: Diagnostic horizons and other features recognized in this pedon:
Mollic epipedon - the zone from 0 to 17 inches (A1 and Bt1 horizons).
Argillic horizon - the zone from 8 to 30 inches (Bt1 and Bt2 horizons).
Particle-size control section - zone from 8 to 28 inches (Bt1 and Bt2 horizons).

Dailybasin soils have a cryic temperature regime and an ustic moisture regime.

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National Cooperative Soil Survey
U.S.A.