LOCATION CASCABEL AZEstablished Series
TAXONOMIC CLASS: Sandy, mixed, thermic Oxyaquic Torrifluvents
TYPICAL PEDON: Cascabel silt loam - forestland. (Colors are for dry soil unless otherwise noted.)
Oi--0 to 1 inch; slightly decomposed cottonwood and tamarisk leaves and twigs; abrupt smooth boundary. (0 to 3 inches thick)
A--1 to 4 inches; light brown (7.5YR 6/4) silt loam brown (7.5YR 5/4) moist; moderate thin platy structure; soft, very friable, nonsticky and nonplastic; many very fine and fine roots; common fine tubular pores; violent effervescence; slightly alkaline (pH 7.8); abrupt smooth boundary. (1 to 5 inches thick)
C1--4 to 29 inches; brown (7.5YR 5/3) sand, brown (7.5YR 4/3) moist; single grain; loose, nonsticky and nonplastic; many very fine, fine, and medium roots; common fine interstitial pores; 5 percent fine and medium gravel; few thin strata of gravelly sand; slight effervescence; moderately alkaline (pH 8.0); abrupt smooth boundary.
C2--29 to 49 inches; brown (7.5YR 5/3) very gravelly coarse sand, brown (7.5YR 4/4) moist; single grain; loose, nonsticky and nonplastic; few very fine roots; common fine interstitial pores; 15 percent fine, 25 percent medium, and 4 percent large gravel; few thin strata (1 to 6 inches thick not continuous) silt loam with many distinct strong brown (7.5YR 5/8) redox concentrations as fine soft iron masses and linings along root channels; common organic stains on ped faces; slight effervescence; moderately alkaline (pH 8.0); clear wavy boundary.
C3--49 to 58 inches; brown (7.5YR 5/3) coarse sand, brown (7.5YR 4/4) moist; single grain; loose, nonsticky and nonplastic; few fine and coarse roots; common fine interstitial pores; 10 percent medium and large gravel; strong effervescence; moderately alkaline (pH 8.0); clear wavy boundary.
C4--58 to 70 inches; brown (7.5YR 5/3) coarse sand, dark brown (7.5YR 3/4) moist; single grain; loose, nonsticky and nonplastic; few fine and coarse roots; common fine interstitial pores; 5 percent fine and medium gravel; strong effervescence; moderately alkaline (pH 8.0). (Combined thickness of the C horizons is greater than 60 inches)
TYPE LOCATION: Pinal County, Arizona; located at a latitude 32 degrees, 50 minutes, 35 seconds North and longitude 110 degrees, 43 minutes, 07 seconds West; about 1,100 feet south and 1,400 feet east of northwest corner of section 9, Township 7 S., Range 16 E.; USGS Quadrangle - Lookout Mountain.
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. Typic aridic soil moisture regime, based on precipitation. This soil has a fluctuating water table, but is not reduced.
Soil temperature: 62 to 72 degrees F.
Depth to water table: 2 to 6 feet; fluctuates seasonally
Type of water saturation: endosaturation for at least 20 consecutive days or 30 cumulative
Rock fragments: averages less than 35 percent in the control section
Reaction: slightly to moderately alkaline pH 7.4 to 8.4
A horizon (when present)
Hue: 7.5YR, 10YR
Value: 3 to 6 dry, 2 to 5 moist
Chroma: 2 to 4, dry or moist
Texture: silt loam, fine sand, sand, very fine sandy loam, loamy fine sand
C horizons
Hue: 7.5YR, 10YR
Value: 3 to 6 dry, 3 to 5 moist
Chroma: 2 to 4, dry or moist
Texture: coarse sand, sand, fine sand, loamy sand, sandy loam, fine sandy loam, loamy fine sand with thin strata of silt loam, silty clay loam, loam, very fine sandy loam
Redoximorphic features: few to many redox concentrations occurring as masses (7.5YR 5/8, 7.5YR 6/6) and linings along root channels and none to many redox depletions (5BG 5/1, 5BG 3/1, 5B 3/1, 5B 2.5/1); usually occurs in strata finer than loamy fine sand
COMPETING SERIES: There are no competing series.
GEOGRAPHIC SETTING: Cascabel soils are on flood plains. Cascabel is part of a dynamic interbraided system of bars and channels at elevations of 1,750 to 3,600 feet. They formed in mixed stream alluvium. Slopes range from 0 to 5 percent. The mean annual precipitation is 10 to 12 inches. The mean annual air temperature is 60 to 70 degrees F. The frost-free period is 190 to 280 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Wetrock, Gila, Quiburi, Vinton, Glendale, and Hantz soils. Wetrock soils have more than 35 percent rock fragments. Quiburi soils have coarse-loamy textures. Gila, Vinton, Glendale, and Hantz soils do not have a high water table.
DRAINAGE AND PERMEABILITY: Moderately well drained; very low runoff; very rapid permeability. These soils are subject to frequent, long to brief periods of flooding between July and September.
USE AND VEGETATION: Used for livestock grazing, wildlife habitat and recreation. Vegetation is tamarisk, black willow, cottonwood, rabbit foot grass, Bermuda grass, seep willow, Goodings willow and Arizona ash.
DISTRIBUTION AND EXTENT: Central and southeast Arizona. Cascabel soils are somewhat extensive. MLRAs are 40 and 41.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Phoenix, Arizona
SERIES ESTABLISHED: Cochise County, Arizona. Soil Survey of Cochise County, Arizona, Northwestern Part, 2007.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Entisol feature - the absence of diagnostic horizons
Fluventic feature - alluvial stratification and irregular organic carbon distribution
Oxyaquic subgroup - endosaturation for 20 consecutive days or 30 cumulative days from July through September
Classified according to Soil Taxonomy, Second Edition, 1999; Keys to Soil Taxonomy, Tenth Edition, 2006
Revised for the correlation of AZ661, 11/2008, PDC
Revised for the correlation of AZ675, 5/2009, WWJ
Location was corrected during correlation of AZ661