LOCATION CARRI AZEstablished Series
TAXONOMIC CLASS: Fine-loamy, mixed, superactive, mesic Aridic Haplustalfs
TYPICAL PEDON: Carri sandy loam - woodland. (Colors are for dry soil unless otherwise noted).
A--0 to 2 inches; dark yellowish brown (10YR 4/4) sandy loam, dark brown (10YR 3/3) moist; weak fine granular structure, slightly hard, very friable, nonsticky and nonplastic; many very fine roots; many very fine tubular pores; 5 percent gravel; noneffervescent; slightly alkaline (pH 7.6); abrupt smooth boundary. (1 to 3 inches thick)
Bt1--2 to 9 inches; dark yellowish brown (10YR 4/4) loam, dark brown (7.5YR 3/4) moist; moderate fine subangular blocky structure; hard, friable, slightly sticky and slightly plastic; common very fine roots; many very fine tubular pores; few faint clay films on ped faces and lining pores; 5 percent gravel; noneffervescent; slightly alkaline (pH 7.8); clear wavy boundary. (3 to 10 inches thick)
Bt2--9 to 21 inches; strong brown (7.5YR 5/6) and yellowish red (5YR 5/6) sandy clay loam, strong brown (7.5YR 4/6) and yellowish red (5YR 4/6) moist; strong fine subangular blocky structure with discontinuous pockets of strong fine prismatic; very hard, friable, moderately sticky and moderately plastic; few very fine roots; many very fine tubular pores; common faint clay films on ped faces and lining pores; 5 percent gravel; noneffervescent with few areas of slightly effervescent; moderately alkaline (pH 8.0); clear wavy boundary. (8 to 15 inches thick)
2Bt3--21 to 27 inches; yellowish brown (10YR 5/6) sandy clay loam, yellowish brown (10YR 5/6) moist; moderate medium subangular blocky structure; very hard, friable, moderately sticky and moderately plastic; few very fine roots along ped faces; many very fine tubular pores; few faint clay films on ped faces and lining pores that decrease with depth; 10 percent decomposing granite gravel; noneffervescent with few small areas that are slightly effervescent; moderately alkaline (pH 8.0); abrupt smooth boundary. (0 to 7 inches thick)
2R--27 inches; granite.
TYPE LOCATION: Mohave County, Arizona; about 6 miles north and 3 miles west of Truxton. 113 degrees, 37 minutes, 8 seconds west longitude and 35 degrees, 23 minutes, 11 seconds north latitude. About 1,900 feet west and 100 feet north of the southeast corner of section 12, T. 23 N., R 13 W.
RANGE IN CHARACTERISTICS:
Soil Moisture: Intermittently moist in some part of the soil moisture control section during July - September and December - February. Driest during May and June. Aridic ustic soil moisture regime.
Soil Temperature: 54 to 57 degrees F.
Rock fragments: Less than 15 percent
Depth to bedrock: 20 to 40 inches
Reaction: slightly or moderately alkaline
A horizon
Hue: 7.5YR, 10YR
Value: 4 or 5 dry, 3 or 4 moist
Chroma: 3 or 4, dry or moist
Bt1 and Bt2 horizons
Hue: 7.5YR, 5YR
Value: 4 or 5 dry, 3 or 4 moist
Chroma: 4 or 6, dry or moist
Texture: loam, sandy clay loam
The 2Bt3 horizon may not be present in some pedons.
COMPETING SERIES: These are the Arnor (NM), Arwite (WY), Augustine (NM), Bigbow (KS), Bosonoak (NM), Celacy (NM), Celavar (NM), Dalhart (OK), Deekay (WY), Dermala (NM), Elwop (WY), Evpark (NM), Flugle (NM), Fort Collins (CO), Gateson (WY), Goesling (NM), Iwela (NM), Lykorly (AZ), Navajita (NM), Nyjack (NM), Oldwolf (WY), Olnest (CO), Orlie (NM), Parkelei (NM), Pinitos (NM), Rauzi (WY), Ribera (NM), Rockybutte (WY), Stoneham (CO), Toluca (MT) and Wagonhound (WY) series. Arnor and Dermala soils have greater than 15 percent rock fragments. Arwite, Bigbow, Dalhart, Deekay, Elwop, Fort Collins, Gateson, Oldwolf, Olnest, Rauzi, Rockybutte, Stoneham, Toluca, and Wagonhound soils receive most of the annual precipitation in the spring and fall and are in LRR-E or LRR-G. Arnor, Arwite, Augustine, Bigbow, Bosonoak, Dalhart, Deekay, Dermala, Fort Collins, Flugle, Goesling, Iwela, Lykorly, Navajita, Olnest, Orlie, Parkelei Pinitos, Rauzi, Rockybutte, Stoneham, Toluca and Wagonhound soils are very deep. Celacy soils have a paralithic contact at moderate depths. Celavar soils are continuously moist in some part from November through March. Evpark, Elwop, Gateson, Nyjack and Oldwolf soils have a mean annual soil temperature of less than 54 degrees F. Nyjack soils also have C horizons containing 5 to 30 percent gravel-size pumice. Ribera soils have segregated calcium carbonate in the lower part of the solum.
GEOGRAPHIC SETTING: Carri soils are on plateaus and mesa tops at elevations of 4,800 to 5,200 feet. They formed in alluvium from granite. Slopes range from 3 to 15 percent. The mean annual precipitation is 14 to 18 inches. The mean annual air temperature is about 52 to 55 degrees F. The frost-free period is 150 to 165 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Valena, Kingtut, Promontory and the Taine soils. Valena soils are shallow to granite. The Taine soils are shallow and clayey-skeletal. Kingtut and Promontory soils are shallow to a hardpan.
DRAINAGE AND PERMEABILITY: Well drained; medium runoff; moderate permeability.
USE AND VEGETATION: Carri soils are used for livestock grazing, wood production and wildlife habitat. Vegetation includes turbinella oak, blue grama, sideoats grama, Fendler threeawn, and an overstory of Utah juniper and singleleaf pinyon.
DISTRIBUTION AND EXTENT: Northwestern Arizona. This series is of moderate extent. MLRA is 38.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Phoenix, Arizona
SERIES ESTABLISHED: Mohave County, Arizona. Soil survey of Mohave County, AZ, Central Part; 2005.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon - The zone from 0 to 2 inches (A horizon)
Argillic horizon - The zone from 2 to 27 inches (Bt1, Bt2, 2Bt3 horizons)
Lithic contact - The boundary at 27 inches (2R horizon)
Classified according to Keys to Soil Taxonomy Ninth Edition, 2003.