LOCATION MIBURN AZ
Established Series
DJP/HAH/JIC/JMH
11/2013
MIBURN SERIES
The Miburn series consists of very deep, somewhat excessively drained soils that formed in tephra deposits on top of alluvium and or eolian material. Miburn soils are on dunes, climbing dunes, and escarpments. Slopes range from 1 to 45 percent. The mean annual precipitation is about 8 inches (203 millimeters) and the mean annual air temperature is about 55 degrees F. (12.8 degrees C.)
TAXONOMIC CLASS: Ashy over loamy, glassy over mixed, superactive, nonacid, mesic Vitrandic Torriorthents
TYPICAL PEDON: Miburn coarse sand - rangeland. (Colors are for dry soil unless otherwise noted.)
C1--0 to 3 inches (0 to 7 cm); black (7.5YR 2.5/1), coarse sand, black (7.5YR 2.5/1),, moist; 2 percent clay; single grain; loose, nonsticky and nonplastic; common very fine roots throughout; interstitial pores; noneffervescent; slightly alkaline, pH 7.6; gradual wavy boundary.
C2--3 to 10 inches (7 to 26 cm); black (7.5YR 2.5/1), fine sand, black (7.5YR 2.5/1), moist; 3 percent clay; single grain; loose, nonsticky and nonplastic; common medium and very fine roots throughout; interstitial pores; 10 percent cobble; noneffervescent; slightly alkaline, pH 7.6; abrupt smooth boundary.
2AB--10 to 23 inches (26 to 58 cm); brown (7.5YR 5/4) channery sandy loam, brown (7.5YR 4/4), moist; 12 percent clay; moderate medium subangular blocky structure; very hard, firm, slightly sticky and slightly plastic; common very fine roots throughout; many very fine vesicular pores; 5 percent gravel and 10 percent channer; violently effervescent, 10 percent calcium carbonate equivalent; moderately alkaline, pH 8.2; gradual smooth boundary.
2Bk--23 to 45 inches (58 to 114 cm); brown (7.5YR 5/4) gravelly loamy sand, brown (7.5YR 4/4), moist; 6 percent clay; weak fine subangular blocky structure; hard, friable, nonsticky and nonplastic; common very fine roots throughout; common very fine dendritic tubular pores; common irregular carbonate masses; 15 percent gravel; violently effervescent, 10 percent calcium carbonate equivalent; strongly alkaline, pH 9.0; abrupt smooth boundary.
3C--45 to 60 inches (114 to 152 cm); brown (7.5YR 4/4) gravelly sandy loam, dark brown (7.5YR 3/4), moist; 11 percent clay; massive; hard, friable, nonsticky and nonplastic; few medium and very fine roots throughout; 10 percent gravel and 5 percent channer; strongly effervescent, 5 percent calcium carbonate equivalent; strongly alkaline, pH 8.8.
TYPE LOCATION: Wupatki National Monument, Coconino County, Arizona; Geographic Coordinate System: 35 30' 44.5'' north, 111 21' 39.1'' west NAD83.
RANGE IN CHARACTERISTICS:
Soil moisture: Intermittently moist in some part of the soil moisture control section during July - September. Driest during May and June. Typic Aridic soil moisture regime.
Soil Temperature: 56 to 59 degrees Fahrenheit (13.3 to 15.0 degrees Celsius)
Particle-size control section (weighted average)
Clay content Ashy section: 1 to 5 percent
Clay content Loamy section: 10 to 13
Rock Fragments: 0 to 30 percent
Volcanic glass: 30 to 40 percent
Depth to abrupt textural change: 7 to 20 inches (18 to 51 cm)
C Horizons
Hue: 7.5YR, 10YR
Value: 2.5 to 5 dry, 2.5 to 4 moist
Chroma: 1 or 2, dry or moist
Texture: coarse sand, fine sand, sand, loamy sand
Clay: 1 to 6 percent
Rock fragments: 0 to 30 percent
Reaction: neutral to moderately alkaline
2AB or 2Bk Horizons
Hue: 5YR, 7.5YR, 10YR
Value: 4 to 6 dry, 3 or 4 moist
Chroma: 2 to 4, dry or moist
Texture: sandy loam, loamy sand, sandy clay loam
Clay: 6 to 24 percent
Calcium carbonate equivalent: 0 to 5 percent
Rock fragments: 0 to 40 percent
Reaction: moderately alkaline to strongly alkaline
3C Horizon
Hue: 5YR, 7.5YR
Value: 3 to 5 dry, 3 or 4 moist
Chroma: 2 to 4, dry or moist
Texture: sandy loam, loam
Clay: 5 to 12 percent
Rock fragments: 10 to 25 percent
Reaction: moderately alkaline to strongly alkaline
COMPETING SERIES: There are no competing series.
GEOGRAPHIC SETTING: Miburn soils are on dune fields, climbing dunes, and escarpments at elevations of 4,340 to 5,239 feet (1,323 to 1,597 meters). Slopes range from 1 to 45 percent. These soils formed in tephra on top of buried alluvium and or eolian deposits. The mean annual precipitation is 6 to 10 inches (152 to 254 millimeters) and occurs as thunderstorms during July to September and as gentle rains and snowfall during December and January. The mean annual air temperature is 54 to 57 degrees Fahrenheit (12.2 to 13.9 degrees Celsius). The frost-free period is 150 to 180 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the
Heiser (AZ), and
Moenkopie (AZ), soils. Heiser soils lack an abrupt textural change, and have textural classes of loamy fine sand and coarser in all horizons. Moenkopie soils are very shallow and shallow to residuum derived from sandstone.
DRAINAGE AND PERMEABILITY: Somewhat excessively drained; very low or low runoff; moderately or moderately rapid permeability.
USE AND VEGETATION: Used for livestock grazing and wildlife habitat. Vegetation includes Torrey's jointfir, buckwheat, galleta, narrowleaf Yucca, and Indian ricegrass.
DISTRIBUTION AND EXTENT: Northern Arizona. Miburn soils are of limited extent. The soil is named after a geographic location near the type location MLRA 35 Land Resource Unit 35.2.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Phoenix, Arizona
SERIES ESTABLISHED: Wupatki National Monument, Coconino County, Arizona; Soil Survey of Coconino County Area, AZ, Central Part; 2013
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon - the zone from 0 to 3 inches (0 to 7 cm) (C1 horizons)
Abrupt textural change - the zone from 10 to 23 inches (26 to 58 cm) (2AB horizon)
Volcanic glass - exceeds 30 percent in mineral class control section
Particle size control section - the zone from 10 to 40 inches (25 to 100 cm) (C2, 2AB, 2Bk horizons)
Classified according to Soil Taxonomy, Second Edition, 1999; Keys to Soil Taxonomy, Eleventh Edition, 2010
________________________________________
National Cooperative Soil Survey
U.S.A.