Marvin Klemme Range Research Station NEON (OAES) 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

D11 OAES megapit soil profile 0-46 cm

Print Date Jul 22 2015
Description Date Feb 19 2013
Describer Tyson G. Morley
Site ID S2013OK149001
Pedon ID S2013OK149001
Lab Source ID SSL
Lab Pedon # 13N2558
Pedon Purpose research site
Taxon Kind series
Geomorphic Setting on backslope of None Assigned
Upslope Shape convex
Cross Slope Shape convex
Particle Size Control Section 0 to 20 cm.
Country United States
State Oklahoma
County Washita
MLRA 78C -- Central Rolling Red Plains, Eastern Part
Soil Survey Area OK149 -- Washita County, Oklahoma
Std Latitude 35.4105883
Std Longitude -99.0604367
Latitude 35 degrees 24 minutes 38.12 seconds north
Longitude 99 degrees 3 minutes 37.57 seconds west
Datum WGS84
UTM Zone 14
UTM Easting 494513 meters
UTM Northing 3918579 meters
Primary Earth Cover Grass/herbaceous cover
Secondary Earth Cover Savanna rangeland
Existing Vegetation broom snakeweed, curlycup gumweed, plantain, prairie threeawn, pricklypear
Bedrock Kind siltstone
Bedrock Hardness very strongly cemented
Description database KSSL
Diagnostic Features ochric epipedon 0 to 8 cm.
paralithic contact 20 to 46 cm.
lithic contact 46 to cm.
Top Depth (cm) 20
Bottom Depth (cm) 46
Restriction Kind bedrock, paralithic
Restriction Hardness moderately cemented
Top Depth (cm) 46
Bottom Depth (cm)  
Restriction Kind bedrock, lithic
Restriction Hardness very strongly cemented
Slope (%) 4.5
Elevation (meters) 515.0
Aspect (deg) 320
MAAT (C) 15.0
Frost-Free Days 211
Horizon Details

A--0 to 8 centimeters (0.0 to 3.1 inches); dark reddish brown (2.5YR 3/4) silt loam, reddish brown (2.5YR 4/4), dry; 14 percent sand; 58 percent silt; 18 percent clay; strong fine granular structure; loose, loose, slightly sticky, slightly plastic; many very fine roots throughout and common fine roots throughout; 2 percent nonflat angular weakly cemented 2 to 25-millimeter siltstone fragments; very slight effervescence, by HCl, 1 normal; clear smooth boundary. Lab sample # 13N03208

Bw--8 to 20 centimeters (3.1 to 7.9 inches); reddish brown (2.5YR 4/4) extremely gravelly silt loam, reddish brown (2.5YR 4/4), dry; 14 percent sand; 58 percent silt; 18 percent clay; weak fine granular structure; loose, loose, slightly sticky, slightly plastic; many very fine roots throughout and common fine roots throughout; 90 percent nonflat angular weakly cemented 2 to 20-millimeter siltstone fragments; slight effervescence, by HCl, 1 normal; abrupt smooth boundary. Lab sample # 13N03209

Cr1--20 to 31 centimeters (7.9 to 12.2 inches); red (2.5YR 4/6), red (2.5YR 4/6), dry; many very fine roots in cracks; strong effervescence, by HCl, 1 normal; clear smooth boundary. Lab sample # 13N03210

Cr2--31 to 46 centimeters (12.2 to 18.1 inches); red (2.5YR 4/6), red (2.5YR 4/6), dry; many very fine roots in cracks; strong effervescence, by HCl, 1 normal; abrupt smooth boundary. Lab sample # 13N03211

R--46 centimeters (18.1 inches); strong effervescence, by HCl, 1 normal.

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.