LOCATION RECAPTURE UT+NM COEstablished Series
TAXONOMIC CLASS: Fine-loamy, mixed, superactive, mesic Typic Natrargids
TYPICAL PEDON: Recapture fine sandy loam in rangeland. (Colors are for dry soil unless otherwise noted.)
E1--0 to 2 inches; light brown (7.5YR 6/4) fine sandy loam, strong brown (7.5YR 4/6) moist; weak fine platy structure; soft, very friable; common very fine and fine roots; common fine interstitial pores; slightly effervescent; carbonates are disseminated; moderately alkaline (pH 8.2); clear smooth boundary. (2 to 6 inches thick)
E2--2 to 10 inches; light brown (7.5YR 6/4) fine sandy loam, brown (7.5YR 4/4) moist; massive; soft, very friable; common very fine and fine roots; common fine tubular pores; strongly effervescent; carbonates are disseminated; moderately alkaline (pH 8.4); abrupt smooth boundary. (0 to 10 inches thick)
Btn1--10 to 16 inches; light reddish brown (5YR 6/4) fine sandy loam, reddish brown (5YR 5/4) moist; weak medium subangular blocky structure; soft, very friable, slightly sticky and slightly plastic; common very fine and fine roots; common fine tubular pores; few faint patchy clay films in pores; strongly effervescent; carbonates are disseminated; strongly alkaline (pH 8.6); abrupt smooth boundary. (0 to 13 inches thick).
Btn2--16 to 28 inches; light reddish brown (5YR 6/3) loam, reddish brown (5YR 4/4) moist; moderate coarse prismatic structure parting to moderate medium subangular blocky; very hard, firm, moderately sticky and slightly plastic; few very fine and fine roots; few fine tubular pores; common faint clay films on faces of peds and in pores; few fine crystals of gypsum and other salts; strongly effervescent; carbonates are disseminated; strongly alkaline (pH 8.8); clear smooth boundary. (6 to 22 inches thick).
Btn3--28 to 42 inches; reddish brown (5YR 5/3) loam, reddish brown (5YR 4/4) moist; moderate medium subangular blocky structure; very hard, firm, moderately sticky and moderately plastic; few very fine and fine roots; few fine tubular pores; few faint patchy clay films in pores; strongly effervescent; carbonates are disseminated; strongly alkaline (pH 8.8); clear smooth boundary. (0 to 14 inches thick)
C--42 to 60 inches; light reddish brown (5YR 6/4) silt loam, reddish brown (5YR 4/4) moist; massive; hard, friable, moderately sticky and slightly plastic; few very fine and fine roots; few fine tubular pores; strongly effervescent; carbonates are disseminated; strongly alkaline (pH 8.8).
TYPE LOCATION: San Juan County, Utah; Buttler Wash; located about 2,500 feet south and 1,000 feet west of the northeast corner of sec. 8, T. 39 S., R. 21 E.
RANGE IN CHARACTERISTICS:
Soil moisture regime: Typic aridic
Soil temperature regime: mesic
Particle-size control section: 18 to 30 percent clay
Depth to calcic horizon: 20 inches or more
Rock fragments: 0 to 5 percent
A or E horizon:
Hue: 2.5YR to 7.5YR
Value: 5 or 6 (4 or 5 moist)
Chroma: 4 to 6
Texture: fine sandy loam, loamy fine sand, or sandy loam
Rock fragments: 0 to 5 percent
Calcium carbonate equivalent: 0 to 15 percent
EC (mmhos/cm): 0 to 4
SAR: 0 to 2 percent
Reaction: moderately or strongly alkaline
B horizon:
Hue: 2.5YR or 5YR
Value: 5 to 8 (4 to 6 moist)
Chroma: 3 to 6
Texture: fine sandy loam, sandy clay loam, clay loam, or loam
Rock fragments: 0 to 5 percent
Calcium carbonate equivalent: 1 to 15 percent
SAR: 13 to 40
Reaction: strongly or very strongly alkaline
C horizon:
Hue: 2.5YR or 5YR
Value: 4 to 7 (4 or 5 moist)
Chroma: 4 to 7
Texture: silt loam, very fine sandy loam, loam, or clay loam
Calcium carbonate equivalent: 1 to 25 percent
SAR: 5 to 25
Reaction: strongly or very strongly alkaline
COMPETING SERIES: These are the Azabache (NM), Fajada (NM), Hadden (UT), Highrock (CA), Homko (UT), Leebench (UT), Leeko (UT), Muff (WY), Pizene (NV), Rusty (NV), Swasey (UT), Terlco (NV), and Uffens (UT) series. Azabache soils contain more than 30 percent coarse fragments in the A horizon and more than 35 percent coarse fragments in the 3Bt horizon. Fajada and Hadden soils are moderately deep. Highrock, Leebench, Leeko, Muff, Pizene, Rusty, Swasey, Terlco, and Uffens series are 7.5YR or yellower. Homko soils have mean annual soil temperatures less than 52 degrees F.
GEOGRAPHIC SETTING:
Parent material: reworked eolian material and alluvium derived from sandstone and shale
Landform: mesas and alluvial fans
Slopes: 0 to 8 percent
Elevation: 4,500 to 5,700 feet
Mean annual temperature: 51 to 56 degrees F
Mean annual precipitation: 6 to 11 inches
Precipitation is fairly evenly distributed throughout the year with July and August being slightly wetter and June being slightly dryer.
Frost-free period: 135 to 180 days
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Flatnose, Nakai and Littlenan soils. Flatnose and Nakai soils are sandy. Littlenan soils are clayey.
DRAINAGE AND PERMEABILITY: well drained, negligible to medium runoff, moderate and moderately slow permeability
USE AND VEGETATION: These soils are used mainly for rangeland and wildlife habitat. The native vegetation is dominantly shadscale, galleta, black greasewood, and alkali sacaton.
DISTRIBUTION AND EXTENT: Southeast Utah and southwest Colorado. LRR D, MLRAs 35 & 36. This series is of moderate extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Phoenix, Arizona
SERIES ESTABLISHED: San Juan County, Utah-Central Part. 1985. The name is derived from Recapture Wash.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon: The zone from 0 to 10 inches. (E1 and E2)
Natric horizon: The zone from 10 to 42 inches. (Btn1, Btn2, and Btn3)
Particle size control section: The zone from 10 to 30 inches. (Btn1, Btn2, Btn3)
Soil Taxonomy Second Edition, 1999