LOCATION IRENE OK+KS+TX

Established Series
JGF-CRC-SLM
06/2020

IRENE SERIES

The Irene series consists of very deep, well drained, moderately permeable soils that formed in silty calcareous alluvium of late Pleistocene to Holocene age. These nearly level to gently sloping soils are on stream terraces and stream terrace remnants. Slope range is 0 to 5 percent. Mean annual precipitation is about 530 mm (21 in) and mean annual air temperature is about 15 degrees C (59 degrees F).

TAXONOMIC CLASS: Fine-silty, mixed, superactive, thermic Pachic Argiustolls

TYPICAL PEDON: Irene silt loam--on a 2 percent slope, in improved pasture at approximately 818 m (2,684 ft) elevation. (Colors are for dry soil unless otherwise stated.)

Ap--0 to 28 cm (0 to 11 in); dark grayish brown (10YR 4/2) silt loam, very dark grayish brown (10YR 3/2), moist; moderate medium and fine granular structure; soft, very friable; many very fine, many fine, and many medium roots throughout; few medium and few fine pores; many worm casts; noneffervescent; slightly alkaline, pH 7.7; abrupt smooth boundary. Thickness of Ap and A horizons is 11 to 36 cm (4 to 14 in)

Bt--28 to 55 cm (11 to 22 in); very dark grayish brown (10YR 3/2) silty clay loam, very dark brown (10YR 2/2), moist; moderate medium prismatic parting to moderate medium subangular blocky structure; slightly hard, friable; many very fine and common fine roots; many very fine and common fine pores; few distinct clay films on all faces of peds; many worm casts; noneffervescent (1 percent calcium carbonate equivalent); slightly alkaline, pH 7.8; gradual smooth boundary. Thickness of the Bt horizons is 10 to 142 cm (4 to 56 in)

Btk1--55 to 77 cm (22 to 30 in); dark grayish brown (10YR 4/2) silty clay loam, very dark grayish brown (10YR 3/2), moist; moderate medium prismatic parting to strong medium subangular blocky structure; hard, firm; common very fine, common fine, and few medium roots; few very fine and few fine pores; few distinct clay films on all faces of peds; many worm casts; few fine threadlike carbonate masses on surfaces along root channels; noneffervescent (1 percent calcium carbonate equivalent); slightly alkaline, pH 7.8; gradual smooth boundary.

Btk2--77 to 109 cm (30 to 43 inches); brown (10YR 5/3) silty clay loam, brown (10YR 4/3), moist; strong medium prismatic parting to moderate medium angular blocky structure; hard, firm; few very fine and few fine roots; few very fine pores; few distinct dark brown (10YR 3/3), moist, organoargillans on vertical faces of peds; common prominent clay films on all faces of peds; common fine threadlike carbonate masses on surfaces along root channels; few medium irregular carbonate nodules in matrix; strongly effervescent (3 percent calcium carbonate equivalent); moderately alkaline, pH 7.9; clear smooth boundary.

Btk3--109 to 149 cm (43 to 59 in); pale brown (10YR 6/3) silty clay loam, brown (10YR 5/3), moist; strong medium prismatic parting to moderate medium subangular blocky structure; hard, firm; few very fine roots; few very fine pores; few distinct dark brown (10YR 3/3), moist, organoargillans on vertical faces of peds; few faint clay films on all faces of peds; few faint carbonate coats on vertical faces of peds; few medium and common fine irregular carbonate nodules in matrix; common fine threadlike carbonate masses on surfaces along root channels; violently effervescent (10 percent calcium carbonate equivalent); moderately alkaline, pH 8.0; clear smooth boundary. Combined thickness of the Btk horizons is 33 to 149 cm (13 to 59 in)

BCk--149 to 203 cm (59 to 80 in); yellowish brown (10YR 5/4) silty clay loam, dark yellowish brown (10YR 4/4), moist; moderate medium prismatic parting to weak very thin platy structure along laminae (5 to 20 mm) of horizontal strata; slightly hard, friable; very few very fine roots; common very fine and few fine pores; very few faint carbonate coats on vertical faces of peds; violently effervescent (2 percent calcium carbonate equivalent); moderately alkaline, pH 7.9.

TYPE LOCATION: Beaver County, Oklahoma; from the intersection of State Highway 412 and State Highway 23 at Elmwood; 4 miles west on State Highway 412, then 3 miles north on county road NS 135; 4350 ft (1326 m) west and 2215 ft (675 m) south of the northeast corner of Section 8, Township 2N, Range 23E (Cimarron meridian).

USGS topographic quadrangle: Balko NE, Oklahoma
Latitude: 36 degrees 39 minutes 13.7 seconds N
Longitude: 100 degrees 36 minutes 36.0 seconds W
Datum WGS84

Decimal Degrees
Latitude: 36.6538048
Longitude: -100.6100006

UTM Northing: 4057676
UTM Easting: 356096
UTM Zone 14S

RANGE IN CHARACTERISTICS:
Soil moisture: An ustic moisture regime bordering on aridic. The soil moisture control section is dry in some or all parts for more than 180 but less than 220 days, cumulative, in normal years. July through August and December through February are the driest months. These soils are intermittently moist in September through November and March through June.
Solum thickness: 100 to greater than 203 cm (40 to more than 80 in)
Thickness of mollic epipedon: 50 to 100 cm (20 to 39 in)
Depth to secondary carbonates: 23 to 144 cm (9 to 57 in)
Thickness of argillic horizon: 57 to 192 cm (23 to 75 in)

Particle-size control section (weighted average):
Total clay content: 22 to 34 percent
Silicate clay content: 22 to 34 percent
Clay-sized carbonate content: 0 to 4 percent
Sand content: 5 to 15 percent
Rock fragments: 0 to 3 percent fine gravel; rounded or subrounded indurated quartzite or irregularly shaped strongly cemented carbonate nodules

A and Ap horizons:
Hue: 7.5YR or 10YR
Value: 3 to 5, 2 or 3 moist
Chroma: 2 or 3 moist or dry
Texture: loam, silt loam
Total clay content: 15 to 29 percent
Silicate clay content: 15 to 29 percent
Sand content: 5 to 35 percent
Rock fragments: none
Calcium carbonate equivalent: 0 to 1 percent
Effervescence: none to slight
Reaction (pH): neutral to moderately alkaline (6.6-8.4)

Bt horizons:
Hue: 7.5YR or 10YR
Value: 3 to 5, 2 or 3 moist
Chroma: 1 or 3 moist or dry
Texture: silt loam, silty clay loam
Total clay content: 22 to 34 percent
Silicate clay content: 22 to 34 percent
Sand content: 5 to 20 percent; not more than 15 percent fine sand or coarser
Rock fragments: 0 to 3 percent; fine gravel; rounded or subrounded indurated quartzite
Identifiable calcium carbonate: none
Calcium carbonate equivalent: 0 to 1 percent
Effervescence: none to slight
Reaction (pH): neutral to moderately alkaline (6.6-8.4)

Btk horizons:
Hue: 7.5YR or 10YR
Value: 3 to 6, 3 to 4 moist
Chroma: 1 to 4 moist or dry
Texture: loam, clay loam, silt loam, silty clay loam
Total clay content: 22 to 34 percent
Silicate clay content: 22 to 34 percent
Clay-sized carbonate: 1 to 4 percent
Sand content: 5 to 30 percent
Rock fragments: 0 to 3 percent; fine gravel; rounded or subrounded indurated quartzite or irregular strongly cemented carbonate nodules or caliche fragments
Identifiable calcium carbonate: amount-1 to 25 percent; size-fine to medium; kind-films, filaments, masses, nodules or finely disseminated carbonate
Calcium carbonate equivalent: 2 to 14 percent
Effervescence: very slight to violent
Reaction (pH): slightly alkaline to moderately alkaline (7.4-8.4)

BCk and Bk horizons (where present):
Hue: 5YR to 10YR
Value: 4 to 6, 4 to 5 moist
Chroma: 2 to 6 moist or dry
Texture: loam, clay loam, silt loam, silty clay loam
Total clay content: 10 to 34 percent
Silicate clay content: 10 to 34 percent
Clay-sized carbonate: 1 to 6 percent
Sand content: 5 to 45 percent
Rock fragments: amount-0 to 5 percent; size-fine to coarse gravels; kind-indurated well-rounded quartzite or irregular strongly cemented carbonate nodules or caliche fragments
Identifiable calcium carbonate: amount-5 to 10 percent; size-fine to medium; kind-films, filaments, masses, nodules or finely disseminated carbonate
Calcium carbonate equivalent: 2 to 12 percent
Effervescence: slight to violent
Reaction (pH): slightly alkaline to moderately alkaline (7.4-8.4)

COMPETING SERIES: These are the Braman, Corbin, Lawrie, Pond Creek, St. Paul, and Westview soils.
Braman and Westview soils: are moist in the soil moisture control section for longer periods
Corbin soils: formed in mixed loess and alluvium, and are moist in the soil moisture control section for longer periods
Lawrie soils: have buried soils in the lower parts of the soil profile, and are moist in the soil moisture control section for longer periods
Pond Creek soils: formed in loess, alluvium, and residuum, occur on paleo terraces in uplands, and are moist in the soil moisture control section for longer periods
St. Paul soils: formed in silty alluvium over residuum, occur on paleo terraces on uplands, and are moist in the soil moisture control section for longer periods

GEOGRAPHIC SETTING:
Parent material: calcareous silty alluvium
Landscape: dissected high plains
Landform: stream terraces and stream terrace remnants
Slope: 0 to 5 percent
Mean annual precipitation: 457 to 660 mm (18 to 26 in)
Thornthwaite annual P-E Index Values: 25 to 36
Mean annual air temperature: 13.3 to 15.0 degrees C (56 to 59 degrees F)
Frost-free period: 180 to 200 days
Elevation: 609.6 to 914.4 m (2,000 to 3,000 ft)

GEOGRAPHICALLY ASSOCIATED SOILS: These are the Abbie, Alopark, Catesby, Chiquita, Darrouzett, Kroeker, Mansic, Mocane, Oklark, and Slapout series.
Abbie and Kroeker soils: occur on similar positions, have a mollic epipedon less than 50 cm (20 in) thick, and have a fine-loamy particle-size control section

Alopark and Slapout soils: occur on adjacent hillslopes, have an ochric epipedon, do not have an argillic horizon, and have a calcic horizon present within 100 cm (40 in) of the surface.
Catesby, Mansic, and Oklark soils: occur on adjacent hillslopes, do not have an argillic horizon, and have a calcic horizon present within 100 cm (40 in) of the surface
Chiquita soils: occur on similar positions, have an ochric epipedon, a fine-loamy particle-size control section, and have a calcic horizon present within 100 cm (40 in) of the surface
Darrouzett soils: occur on similar positions, have a fine particle-size control section, and have slickensides or wedge-shaped peds within 100 cm (40 in) of the surface
Mocane soils: occur on adjacent hillslopes, have an ochric epipedon, do not have an argillic horizon, and have a sandy particle-size control section

DRAINAGE AND PERMEABILITY:
Drainage: well drained
Permeability: moderate
Runoff: negligible on 0 to 1 percent slopes, low on 1 to 5 percent slopes

USE AND VEGETATION:
Major uses: cropland and livestock grazing
Native vegetation: Dominated by mixed tallgrasses and midgrasses, mainly sand and little Bluestem. Sideoats grama may be abundant along with many perennial forbs and legumes. Minor amounts of woody species may occur including skunkbush, hackberry, or sandplum.
Crops: wheat, grain sorghum, alfalfa, and sorghum/sudan grass.
Ecological sites assigned to phases and components of this series are listed below. Current ecological site assignments are in Web Soil Survey. Components of this series include the following ecological sites: Loamy Upland (R077EY056OK)
DISTRIBUTION AND EXTENT:
General Area: northwestern Oklahoma and the Oklahoma and Texas Panhandles
Land Resource Region: H - Central Great Plains Winter Wheat and Range Region
Major Land Resource Area: 77A - Southern High Plains, Northern Part
Extent: moderate

SOIL SURVEY REGIONAL OFFICE (SSRO) RESPONSIBLE: Temple, Texas

SERIES ESTABLISHED: Woods County, Oklahoma; 1995.

REMARKS:

Diagnostic horizons and features recognized in this pedon:
Mollic epipedon: 0 to 77 cm (0 to 30 in) (Ap, Bt, and Btk1 horizons)
Argillic horizon: 28 to 149 cm (11 to 59 in) (Bt, Btk1, Btk2, and Btk3 horizons)
Secondary carbonates: 55 to 203 cm (30 to 80 in) (Btk1, Btk2, Btk3, and BCk horizons)

ADDITIONAL DATA: KSSL data available: S2004OK007005 (TL-Beaver County, Oklahoma). Oklahoma State University: lab sample S1984OK151002.

TAXONOMIC VERSION: Keys to Soil Taxonomy, Twelfth Edition, 2014.

National Cooperative Soil Survey
U.S.A.