Onaqui NEON (ONAQ) Soil Descriptions

Pedon Descriptions

Pit‐level observations and field measurements reported using the standard NRCS format. They contain volume estimates for coarse fragments > 20 mm where applicable.

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Site Level Plot Summary

A narrative summary that places the sampled soil pedons in the broader context of soils and geomorphology for the entire NEON site.

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soil profile

D15 ONAQ megapit soil profile 0-200 cm

soil profile

D15 ONAQ megapit soil profile 0-81 cm

soil profile

D15 ONAQ megapit soil profile 34-146 cm

soil profile

D15 ONAQ megapit soil profile 140-200 cm

Megapit Pedon Description

Print Date Jul 22 2015
Description Date Jun 2 2014
Describer Randy Lewis; Ray Grow
Site ID 14UT611001RJL
Pedon ID S2014UT045001
Lab Source ID KSSL
Lab Pedon # 14N0856
Soil Name as Described/Sampled Taylorsflat
Classification Fine-loamy, mixed, superactive, mesic Xeric Haplocalcids
Pedon Type correlates to named soil
Pedon Purpose research site
Taxon Kind series
Geomorphic Setting fan remnant
Upslope Shape concave
Cross Slope Shape convex
Particle Size Control Section 25 to 100 cm.
Description origin NASIS
State Utah
County Tooele
MLRA 28A -- Great Salt Lake Area
Soil Survey Area UT611 -- Tooele Area, Utah - Tooele County and Parts of Box Elder, Davis and Juab Counties
8-LAS -- Las Cruces, New Mexico
Map Unit 64 -- Taylorsflat loam, 1 to 5 percent slopes
Quad Name Faust, Utah
Std Latitude 40.1783389
Std Longitude -112.4538139
Latitude 40 degrees 10 minutes 42.02 seconds north
Longitude 112 degrees 27 minutes 13.73 seconds west
Datum WGS84
UTM Zone 12
UTM Easting 376224 meters
UTM Northing 4448565 meters
Primary Earth Cover Grass/herbaceous cover
Secondary Earth Cover Shrubby rangeland
Existing Vegetation cheatgrass, mountain big sagebrush, mustard, rabbitbrush, scarlet globemallow, squirreltail
Parent Material eolian deposits over slope alluvium derived from limestone and sandstone
Description database KSSL
Diagnostic Features ochric epipedon 0 to 12 cm.
cambic horizon 12 to 66 cm.
calcic horizon 66 to 178 cm.
petrocalcic horizon 178 to 196 cm.
Top Depth (cm) 178
Bottom Depth (cm) 196
Restriction Kind petrocalcic
Restriction Hardness strongly cemented
Slope (%) 3.0
Elevation (meters) 1,664.0
Aspect (deg) 100
MAAT (C) 9.5
MAP (mm) 254
Frost-Free Days 125
Drainage Class well
Horizon Details

A1--0 to 4 centimeters (0.0 to 1.6 inches); brown (10YR 5/3) fine sandy loam, brown (10YR 4/3), moist; 10 percent clay; moderate thin platy parts to weak fine subangular blocky structure; soft, very friable, nonsticky, nonplastic; many very fine roots and common medium roots and common fine roots; many very fine low-continuity vesicular and many fine low-continuity vesicular pores; strong effervescence; moderately alkaline, pH 8.0, pH indicator solutions; clear smooth boundary. Lab sample # 14N04366

A2--4 to 12 centimeters (1.6 to 4.7 inches); brown (10YR 5/3) fine sandy loam, brown (10YR 4/3), moist; 15 percent clay; weak medium platy parts to weak medium subangular blocky, and weak medium platy parts to weak fine subangular blocky structure; slightly hard, friable, slightly sticky, nonplastic; many very fine roots and common medium roots and common fine roots; many very fine moderate-continuity tubular and few fine moderate-continuity tubular pores; strong effervescence; moderately alkaline, pH 8.0, pH indicator solutions; clear wavy boundary. Lab sample # 14N04367

Bw--12 to 66 centimeters (4.7 to 26.0 inches); pale brown (10YR 6/3) loam, brown (10YR 4/3), moist; 21 percent clay; weak medium subangular blocky parts to moderate fine subangular blocky, and weak medium subangular blocky parts to moderate very fine subangular blocky structure; slightly hard, friable, slightly sticky, slightly plastic; many very fine roots and few medium roots and few fine roots; many very fine moderate-continuity tubular and common fine moderate-continuity tubular and few coarse moderate-continuity tubular pores; 2 percent nonflat subangular indurated 2 to 75-millimeter mixed rock fragments; violent effervescence; strongly alkaline, pH 8.6, pH indicator solutions; gradual wavy boundary. Lab sample # 14N04368

Bk--66 to 156 centimeters (26.0 to 61.4 inches); yellowish brown (10YR 5/4) loam, dark yellowish brown (10YR 4/4), moist; 20 percent clay; weak medium subangular blocky, and weak fine subangular blocky structure; slightly hard, friable, slightly sticky, slightly plastic; few very fine roots and few medium roots and few fine roots; few very fine moderate-continuity tubular and common fine moderate-continuity tubular and pores; carbonate, finely disseminated in matrix and 1 percent fine pendular strongly cemented carbonate concretions on bottom of rock fragments; 5 percent nonflat subangular indurated 2 to 75-millimeter mixed rock fragments; violent effervescence; very strongly alkaline, pH 9.2, pH indicator solutions; gradual wavy boundary. Lab sample # 14N04369

2CBk1--156 to 165 centimeters (61.4 to 65.0 inches); pale brown (10YR 6/3) gravelly loam, dark yellowish brown (10YR 4/4), moist; 18 percent clay; massive; hard, friable, slightly sticky, slightly plastic; few very fine roots and few fine roots; few very fine moderate-continuity tubular pores; carbonate, finely disseminated in matrix and 1 percent fine pendular strongly cemented carbonate concretions around rock fragments and 1 percent very fine irregular carbonate masses in matrix; 5 percent nonflat subangular indurated 2 to 75-millimeter mixed rock fragments and 15 percent nonflat subangular indurated 75 to 250-millimeter mixed rock fragments; violent effervescence; strongly alkaline, pH 8.8, pH indicator solutions; gradual wavy boundary. Lab sample # 14N04370

2CBk2--165 to 178 centimeters (65.0 to 70.1 inches); pale brown (10YR 6/3) extremely gravelly loam, brown (10YR 5/3), moist; 18 percent clay; moderate fine angular blocky, and moderate medium angular blocky structure; hard, friable, slightly sticky, slightly plastic; few very fine roots and few fine roots; few very fine moderate-continuity tubular pores; carbonate, finely disseminated in matrix and 10 percent fine pendular strongly cemented carbonate concretions around rock fragments and 2 percent very fine irregular carbonate masses in matrix; 5 percent nonflat subangular indurated 75 to 250-millimeter mixed rock fragments and 65 percent nonflat subangular indurated 2 to 75-millimeter mixed rock fragments; violent effervescence; strongly alkaline, pH 9.0, pH indicator solutions; abrupt wavy boundary. Lab sample # 14N04371

2Bkm--178 to 196 centimeters (70.1 to 77.2 inches); very pale brown (10YR 8/2) material, pale brown (10YR 6/3), moist; strongly cemented by carbonates; 5 percent medium pendular strongly cemented carbonate laminae with sharp boundaries at top of horizon and 75 percent very coarse pendular strongly cemented carbonate concretions around rock fragments; 5 percent nonflat subangular indurated 75 to 250-millimeter mixed rock fragments and 65 percent nonflat subangular indurated 2 to 75-millimeter mixed rock fragments; gradual wavy boundary. Lab sample # 14N04372

3CBk3--196 to 200 centimeters (77.2 to 78.7 inches); pale brown (10YR 6/3) extremely gravelly loamy sand, brown (10YR 5/3), moist; 5 percent clay; single grain; soft, very friable, nonsticky, nonplastic; common very fine low-continuity interstitial pores; carbonate, finely disseminated in matrix and 2 percent fine pendular strongly cemented carbonate concretions on bottom of rock fragments and 2 percent very fine irregular carbonate masses in matrix; 5 percent nonflat subangular indurated 75 to 250-millimeter mixed rock fragments and 65 percent nonflat subangular indurated 2 to 75-millimeter mixed rock fragments; violent effervescence; strongly alkaline, pH 8.8, pH indicator solutions. Lab sample # 14N04373

Credits: This megapit soil pedon description was generously created by USDA Natural Resource Conservation Service staff, with particular thanks to Larry West, Jon Hempel, and numerous field staff.