LOCATION QUIBURI AZEstablished Series
TAXONOMIC CLASS: Coarse-loamy, mixed, superactive, calcareous, thermic Oxyaquic Torrifluvents
TYPICAL PEDON: Quiburi very fine sandy loam - forestland. (Colors are for dry soil unless otherwise noted.)
Oi--0 to 1 inch; slightly decomposed leaf litter.
C1--1 to 6 inches; brown (7.5YR 5/3) very fine sandy loam, brown (7.5YR 4/2) moist; massive; soft, very friable, nonsticky and slightly plastic; common very fine and fine roots; common fine vesicular pores; violently effervescent; moderately alkaline (pH 8.0); abrupt smooth boundary. (1 to 10 inches thick)
C2--6 to 21 inches; brown (7.5YR 5/3) very fine sandy loam, brown (7.5YR 4/3) moist; massive; soft, very friable, nonsticky and nonplastic; common very fine and fine roots; common fine vesicular pores; violently effervescent; moderately alkaline (pH 8.0); abrupt smooth boundary. (1 to 20 inches thick)
Cn1--21 to 36 inches; brown (7.5YR 5/3) very fine sandy loam, brown (7.5YR 4/3) moist; massive; soft, very friable, nonsticky and slightly plastic; common very fine and fine roots; common fine irregular pores; violently effervescent; very strongly alkaline (pH 9.2); clear smooth boundary. (1 to 10 inches thick)
Cn2--36 to 51 inches; light brown (7.5YR 6/3) stratified very fine sandy loam to silt loam, brown (7.5YR 5/2) moist; massive; soft, very friable, nonsticky and slightly plastic; few very fine roots and fine roots; common fine irregular pores; few fine and medium irregular soft strong brown (7.5YR 5/8) redox concentrations as iron masses; few fine black (7.5YR 2.5/1) organic masses; violently effervescent; strongly alkaline (pH 9.0); clear smooth boundary. (1 to 20 inches thick)
C3--51 to 60 inches; light brown (7.5YR 6/3) very fine sandy loam, brown (7.5YR 5/2) moist; massive; soft, very friable, nonsticky and nonplastic; few very fine and fine roots; common fine irregular pores; common fine and medium irregular soft strong brown (7.5YR 5/8) redox concentrations as iron masses; few fine black (7.5YR 2.5/1) organic masses; common organic stains lining root channels; violently effervescent; moderately alkaline (pH 8.2).
TYPE LOCATION: Cochise County, Arizona; located at a latitude of 31 degrees, 51 minutes, 40 seconds North and longitude of 110 degrees, 12 minutes, 39 seconds West; about 400 feet North and 200 feet West from the southeast corner of Section 16, T. 18 S., R. 21 E.
RANGE IN CHARACTERISTICS:
Soil moisture - Intermittently moist in some part of 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 days
Reaction: slightly through very strongly alkaline
Calcium carbonate equivalent: 0 to 5 percent
C1, C2 and Cn1 horizons
Hue: 7.5YR, 10YR
Value: 4 to 6 dry, 3 to 6 moist
Chroma: 3 to 6 dry, 2 to 4 moist
Texture: very fine sandy loam, fine sandy loam, sandy loam, silt loam (less than 18 percent clay), loam. Some pedons contain a thin strata of finer or coarser materials.
Cn2 and C3 horizons
Hue: 7.5YR, 10YR
Value: 4 to 6 dry, 3 to 6 moist
Chroma: 3 to 6 dry, 2 to 4 moist
Texture: very fine sandy loam, fine sandy loam, sandy loam, silt loam (less than 18 percent clay), loam
Some pedons contain thin strata of finer or coarser materials.
Redoximorphic features: few to many redox concentrations occurring as masses and linings along root channels (7.5YR 5/8 & 6/6)
COMPETING SERIES: There are no competing series.
GEOGRAPHIC SETTING: Quiburi soils are on flood plains at elevations of 1,750 to 4,000 feet. Slopes range from 0 to 5 percent. These soils formed in mixed stream alluvium. The mean annual precipitation is 10 to 12 inches and occurs as thunderstorms during July to September and as gentle rains during December to February. 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 Glendale, Hantz, Gila, Anthony, and Maricopa soils. These soils do not have a high water table.
DRAINAGE AND PERMEABILITY: Moderately-well drained; medium to rapid runoff; moderately rapid permeability; occasionally flooded.
USE AND VEGETATION: Used for livestock grazing and wildlife habitat. Vegetation includes black willow, mesquite, wolfberry, greythorn, cottonwood, Bermuda grass and giant sacaton.
DISTRIBUTION AND EXTENT: Southern Arizona. Quiburi soils are of small extent. Quiburi is the name of a small historic mission in the area. This soil occurs in LRR-D, MLRAs 40 and 41.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Phoenix, Arizona
SERIES ESTABLISHED: Cochise County, Arizona. Soil survey of Cochise County, Arizona, Douglas-Tombstone Part; 1996.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Entisol feature - the absence of diagnostic subsurface horizons
Fluvial feature - irregular decrease in organic carbon in the zone from 1 to 60 inches (C1, C2, Cn1, Cn2, C3 horizons)
Oxyaquic subgroup - endosaturation for at least 20 consecutive days or 30 cumulative days in July through September
Redoximorphic features - the zone from 36 to 60 inches (Cn1, C1 horizons)
Classified according to Soil Taxonomy, Second Edition, 1999; Keys to Soil Taxonomy, Tenth Edition, 2006.
Revised for the correlation of AZ661, 2/2009, WWJ