LOCATION HANO AZEstablished Series
TAXONOMIC CLASS: Fine, mixed, superactive, mesic Ustic Calciargids
TYPICAL PEDON: Hano fine sandy loam-rangeland. (Colors are for dry soil unless otherwise noted.)
A--0 to 3 inches; brown (7.5YR 5/4) fine sandy loam, brown (7.5YR 5/4) moist; moderate thin platy structure over weak fine granular; slightly hard, very friable, slightly sticky and slightly plastic; common very fine roots; common very fine vesicular pores; violently effervescent, (6 percent calcium carbonate); slightly alkaline; abrupt smooth boundary. (2 to 4 inches thick)
Bt--3 to 8 inches; strong brown (7.5YR 5/6) clay loam, brown (7.5YR 4/4) moist, weak medium subangular blocky structure; soft, very friable, slightly sticky and slightly plastic; many very fine roots; common fine tubular pores; few thin discontinuous clay films on faces of peds; violently effervescent, (12 percent calcium carbonate); slightly alkaline; clear wavy boundary. (4 to8 inches thick)
2Btk1--8 to 12 inches; (70 percent) brown (7.5YR 4/4) clay loam, brown (7.5YR 4/4) moist; and (30 percent) light yellowish brown (10YR 6/4) clay, dark yellowish brown (10YR 4/4) moist; weak medium prismatic structure parting to moderate fine subangular blocky; hard, very firm, sticky and plastic; many very fine roots; common fine tubular pores; thick discontinuous clay films on faces of peds and lining pores; few fine accumulations of calcium carbonate on faces of peds and in pores; violently effervescent, (20 percent calcium carbonate); moderately alkaline; clear wavy boundary. (4 to 8 inches thick)
2Btk2--12 to 22 inches; (40 percent) brown (7.5YR 4/4) clay loam, brown (7.5YR 4/4) as tongues in between areas of (60 percent) very pale brown(10YR 7/3) clay, light yellowish brown (10YR 6/4) moist; moderate coarse prismatic structure parting to weak medium angular blocky; hard, very firm, sticky and plastic; many very fine roots; common fine tubular pores; 20 percent soft shale fragments; thick discontinuous clay films on faces of peds and lining pores; few fine accumulations of calcium carbonate on faces of peds and in pores; violently effervescent, (20 percent calcium carbonate); moderately alkaline; clear irregular boundary. (8 to 18 inches thick)
2C/Btk--22 to 31 inches; (90 percent) pale brown (10YR 6/3) clay shale, brown (10YR 5/3) moist, with 10 percent brown (7.5YR 5/4) clay loam, brown (7.5YR 4/4) moist as tongues and thick coatings on faces of desiccation cracks and in pores; moderate medium prismatic structure; very hard, extremely firm, very sticky and plastic; few very fine roots; few fine tubular pores; few thin patchy clay films on faces of peds in pores and as tongues; few fine accumulations of calcium carbonate in pores; violently effervescent; 20 percent calcium carbonate equivalent; moderately alkaline; clear smooth boundary. (8 to 12 inches thick)
2C--31 to 45 inches; variegated light yellowish brown (10YR 6/4); light gray (10YR 7/2) and grayish brown (10YR 5/2) clay, yellowish brown (10YR 5/4), light yellowish brown (10YR 6/4) and dark grayish brown (10YR 4/2) moist; massive, with vertical desiccation cracks 1 to 4 inches apart; very hard, very firm, very sticky and very plastic; few very fine roots along cracks and fractures; no visible pores; 75 percent soft shale fragments; violently effervescent; 10 percent calcium carbonate equivalent; moderately alkaline; clear smooth boundary. (14 to 18 inches thick)
2Cr--45 to 60 inches; fractured shale.
TYPE LOCATION: Navajo County, Arizona; 2.5 miles southwest of Five Houses; about 1000 feet west and 1500 feet south of the northeast corner of sec. 5, T. 27 N., R. 19 E.
RANGE IN CHARACTERISTICS:
Soil moisture - Intermittently moist in some parts of the soil moisture control section during December-March and July-September. Ustic aridic moisture regime.
Soil temperature - 53 to 55 degrees F.
Rock fragments - Less than 5 percent.
Depth to calcic horizon - 6 to 20 inches.
Texture of control section - Clay loam, clay. (35 to 50 percent clay)
A horizon
Hue: 7.5YR or 10YR
Value: 5 or 6 dry, 4 or 5 moist
Chroma: 4 or 6 dry and moist
Texture: Fine sandy loam, very fine sandy loam, sandy clay loam
Reaction: Slightly to moderately alkaline.
B horizon
Hue: 7.5YR or 10YR
Value: 5 or 6 dry, 4 or 5 moist
Chroma: 3, 4, or 6 dry, 4 or 6 moist
Texture: Clay loam, clay
Reaction: Slightly to moderately alkaline
Carbonates: 15 to 25 percent calcium carbonate equivalent.
C Horizon
Hue: 10YR
Value: 5, 6, or 7 dry, 4 or 5 moist
Chroma: 1, 2, 3, or 4 dry, 1, 2, or 4 moist
Texture: Sandy clay loam, clay loam, clay, silty clay
Soft shale fragments: 20 to 75 percent (by volume) soft, friable shale fragments interbedded with gypsum masses and crystals
Reaction: Slightly to moderately alkaline
Carbonates: 15 to 25 percent calcium carbonate equivalent in the calcic horizon.
COMPETING SERIES: These are the Alesna (NM), Keeseha (AZ), Poley (AZ), and Silva (NM) series. Alesna soils have 5 to 34 percent rock fragments. Keeseha soils are less than 20 inches to the base of the Bt horizon and have redder hues. Poley soils have calcic horizons at depths of greater than 20 inches.. Silva soils have calcic horizons at depths of 30 to 40 inches.
GEOGRAPHIC SETTING: Hano soils are on hillslopes. These soils formed in slope alluvium from shale mantled with eolian deposits. Slope ranges from 2 to 10 percent. Elevations are 5700 to 6100 feet. The mean annual precipitation is 10 to 12 inches, the average annual air temperature is 51 to 53 degrees F, and the average frost-free period is 130 to 150 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Cannonville, Jocity, Tewa, and Wepo, soils. Cannonville soils are on hillslopes and are shallow to soft, weathered shale. Jocity soils lack diagnostic horizons and are on alluvial fans and flood plains. Tewa soils are on stream terraces, have fine-loamy control sections and lack argillic horizons. Wepo soils lack argillic horizons and have depths of 60 inches or more.
DRAINAGE AND PERMEABILITY: Well drained. Runoff is medium. Permeability is slow.
USE AND VEGETATION: Hano soils are used for grazing and wildlife habitat. Native vegetation is galleta, alkali sacaton, Indian ricegrass, bottlebrush squirreltail, shadscale and fourwing saltbush.
DISTRIBUTION AND EXTENT: Northern Arizona. The soils of this series are not extensive; their total extent to date is about 8500 acres. MLRA 35.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Phoenix, Arizona
SERIES ESTABLISHED: Navajo County, Arizona, 1985. Hopi Area Soil Survey.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon - The zone from the surface of the soil to a depth of about 3 inches (A horizon).
Argillic horizon - The zone from about 8 to 21 inches.
Calcic horizon - The zone of lime accumulation (greater than 15 percent calcium carbonate equivalent within and below the argillic horizon.
Tongues- The interface between eolian loams and deep cracks in underlying slope alluvium.
ADDITIONAL DATA: Laboratory data furnished by Bureau of Indian Affairs Soils Laboratory in Gallup, New Mexico, Pedon S80Az-017-38, Lab. No. 797 through 799.