Yellowstone National Park NEON (YELL) 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

D12 YELL megapit soil profile 0-200 cm

soil profile

D12 YELL megapit soil profile 0-39 cm

soil profile

D12 YELL megapit soil profile 22-52 cm

soil profile

D12 YELL megapit soil profile 37-80 cm

soil profile

D12 YELL megapit soil profile 59-109 cm

soil profile

D12 YELL megapit soil profile 89-140 cm

soil profile

D12 YELL megapit soil profile 120-170 cm

soil profile

D12 YELL megapit soil profile 156-200 cm

Megapit Pedon Description

Print Date Feb 4 2019
Description Date Jul 10 2018
Describer Daniel Wood, Philip Goodin
Site ID S2018WY029001
Pedon ID S2018WY029001
Lab Source ID KSSL
Lab Pedon # 18N1800
Soil Name as Described/Sampled Pachel
Classification Fine-loamy, mixed, superactive, frigid Pachic Argiustolls
Pedon Type confirmation description
Pedon Purpose laboratory sampling site
Taxon Kind family
Physiographic Division Rocky Mountain System
Physiographic Province Middle Rocky Mountains
Geomorphic Setting on footslope of mountainbase of mountains
on footslope of mountainbase of hillslope
Upslope Shape concave
Cross Slope Shape linear
Particle Size Control Section 4 to 29 cm.
Description origin Spreadsheet
State Wyoming
County Park
MLRA 43B -- Central Rocky Mountains
Soil Survey Area WY665 -- Yellowstone National Park, Wyoming-Montana-Idaho
4-POW -- Powell, Wyoming
Quad Name Blacktail Deer Creek, Wyoming
Std Latitude 44.9559710
Std Longitude -110.5419840
Latitude 44 degrees 57 minutes 21.50 seconds north
Longitude 110 degrees 32 minutes 31.14 seconds west
Datum NAD83
UTM Zone 12
UTM Easting 536126 meters
UTM Northing 4978161 meters
Primary Earth Cover Grass/herbaceous cover
Description database KSSL
Diagnostic Features mollic epipedon 0 to 98 cm.
argillic horizon 4 to 29 cm.
argillic horizon 45 to 200 cm.
secondary carbonates 67 to 200 cm.
Slope (%) 9.0
Elevation (meters) 2,036.0
Aspect (deg) 343
MAAT (C) 6.0
MAP (mm) 432
Frost-Free Days 100
Drainage Class well
Horizon Details

A--0 to 4 centimeters (0.0 to 1.6 inches); brown (7.5YR 4/2) broken face loam, black (7.5YR 2.5/1) broken face, moist; 20 percent clay; moderate medium granular structure; soft, friable, slightly sticky, slightly plastic; very fine roots throughout and fine roots throughout; 2 percent nonflat subangular indurated 2 to 5-millimeter mixed rock fragments; noneffervescent, by HCl, 1 normal; neutral, pH 7.2, pH indicator solutions; clear smooth boundary. Lab sample # 18N05260

Bt1--4 to 29 centimeters (1.6 to 11.4 inches); brown (7.5YR 4/2) broken face loam, black (7.5YR 2.5/1) broken face, moist; 24 percent clay; moderate medium subangular blocky structure; soft, very friable, slightly sticky, slightly plastic; very fine roots throughout and fine roots throughout; very fine low-continuity dendritic tubular and fine low-continuity dendritic tubular pores; 15 percent distinct clay films on all faces of peds; 4 percent nonflat subangular indurated 2 to 20-millimeter mixed rock fragments and 4 percent nonflat subangular indurated 2 to 5-millimeter mixed rock fragments; noneffervescent, by HCl, 1 normal; neutral, pH 6.8, pH indicator solutions; gradual wavy boundary. Lab sample # 18N05261

Bw--29 to 45 centimeters (11.4 to 17.7 inches); brown (7.5YR 4/2) broken face loam, black (7.5YR 2.5/1) broken face, moist; 24 percent clay; weak medium granular structure; soft, very friable, moderately sticky, moderately plastic; very fine roots throughout and fine roots throughout; very fine low-continuity dendritic tubular pores; 3 percent nonflat subangular indurated 2 to 20-millimeter mixed rock fragments and 4 percent nonflat subangular indurated 2 to 5-millimeter mixed rock fragments; noneffervescent, by HCl, 1 normal; neutral, pH 6.8, pH indicator solutions; gradual smooth boundary. Lab sample # 18N05262

Bt2--45 to 67 centimeters (17.7 to 26.4 inches); brown (7.5YR 4/2) broken face gravelly loam, black (7.5YR 2.5/1) broken face, moist; 26 percent clay; moderate medium subangular blocky structure; soft, friable, moderately sticky, moderately plastic; very fine roots throughout and fine roots throughout; very fine moderate-continuity dendritic tubular and fine low-continuity dendritic tubular pores; 25 percent distinct clay films on all faces of peds; 5 percent nonflat subangular indurated 2 to 20-millimeter mixed rock fragments and 10 percent nonflat subangular indurated 2 to 5-millimeter mixed rock fragments; noneffervescent, by HCl, 1 normal; neutral, pH 7.0, pH indicator solutions; gradual wavy boundary. Lab sample # 18N05263

Btk1--67 to 98 centimeters (26.4 to 38.6 inches); brown (7.5YR 5/2) broken face gravelly clay loam, dark brown (7.5YR 3/2) broken face, moist; 28 percent clay; moderate medium subangular blocky structure; moderately hard, friable, moderately sticky, moderately plastic; very fine roots throughout and medium roots throughout and fine roots throughout; very fine moderate-continuity dendritic tubular pores; 10 percent faint carbonate coats on rock fragments and 35 percent distinct clay films on all faces of peds; 2 percent medium distinct cylindrical indurated cemented carbonate nodules with clear boundaries in matrix; 5 percent nonflat subrounded indurated 250 to 600-millimeter mixed rock fragments and 5 percent nonflat subangular indurated 5 to 20-millimeter mixed rock fragments and 8 percent nonflat subangular indurated 2 to 5-millimeter mixed rock fragments and 8 percent nonflat subrounded indurated 76 to 250-millimeter mixed rock fragments and 8 percent nonflat subangular indurated 20 to 76-millimeter mixed rock fragments; noneffervescent, by HCl, 1 normal; neutral, pH 7.2, pH indicator solutions; gradual wavy boundary. Lab sample # 18N05264

Btk2--98 to 126 centimeters (38.6 to 49.6 inches); light brown (7.5YR 6/3) broken face gravelly clay loam, brown (7.5YR 5/3) broken face, moist; 28 percent clay; moderate medium subangular blocky structure; moderately hard, friable, moderately sticky, moderately plastic; very fine roots throughout and fine roots throughout; very fine low-continuity tubular pores; 15 percent distinct carbonate coats on rock fragments and 40 percent distinct clay films on all faces of peds; 3 percent medium distinct irregular weakly cemented carbonate masses with diffuse boundaries in matrix; 2 percent nonflat subrounded indurated 250 to 600-millimeter mixed rock fragments and 2 percent nonflat subrounded indurated 76 to 250-millimeter mixed rock fragments and 3 percent nonflat subangular indurated 20 to 76-millimeter mixed rock fragments and 4 percent nonflat subangular indurated 2 to 5-millimeter mixed rock fragments and 5 percent nonflat subangular indurated 5 to 20-millimeter mixed rock fragments; very slight effervescence, by HCl, 1 normal; slightly alkaline, pH 7.6, pH indicator solutions; gradual wavy boundary. Lab sample # 18N05265

Btk3--126 to 161 centimeters (49.6 to 63.4 inches); light gray (10YR 7/2) broken face clay loam, brown (10YR 5/3) broken face, moist; 30 percent clay; moderate medium platy parts to moderate medium subangular blocky structure; moderately hard, friable, moderately sticky, moderately plastic; fine low-continuity tubular pores; 35 percent distinct clay films on all faces of peds and 40 percent distinct carbonate coats on bottom of rock fragments; 35 percent medium prominent threadlike weakly cemented carbonate masses with clear boundaries in matrix; 3 percent nonflat subangular indurated 20 to 76-millimeter mixed rock fragments and 3 percent nonflat subangular indurated 5 to 20-millimeter mixed rock fragments and 5 percent nonflat subangular indurated 2 to 5-millimeter mixed rock fragments; strong effervescence, by HCl, 1 normal; moderately alkaline, pH 8.2, pH indicator solutions; diffuse wavy boundary. Lab sample # 18N05266

Btk4--161 to 200 centimeters (63.4 to 78.7 inches); pale brown (10YR 6/3) broken face clay loam, brown (10YR 4/3) broken face, moist; 30 percent clay; strong medium platy structure; hard, firm, moderately sticky, moderately plastic; fine low-continuity tubular pores; 40 percent distinct carbonate coats on bottom of rock fragments and 65 percent prominent clay films on all faces of peds; 15 percent medium prominent threadlike weakly cemented carbonate masses with clear boundaries in matrix; 3 percent nonflat subangular indurated 20 to 76-millimeter mixed rock fragments and 3 percent nonflat subangular indurated 5 to 20-millimeter mixed rock fragments and 5 percent nonflat subangular indurated 2 to 5-millimeter mixed rock fragments; strong effervescence, by HCl, 1 normal; moderately alkaline, pH 8.4, pH indicator solutions. Lab sample # 18N05267

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.