IDENTIFIERS

  • Current Taxon Name (Soil Name): Weld
  • OSD
  • Series Extent
  • User Site ID: S2015CO075008
  • User Pedon ID: S2015CO075008
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - KSSL
  • Lab Pedon # - 16N0336
  • User Project ID: STER_010_NEON
  • Project Name: North Sterling, CO
  • Print Date: 12/6/2025

    • LOCATION

  • Location In Web Soil Survey
  • AOI is roughly a square mile and pedon is marked in the center.
  • Location in SoilWeb
  • Location in Google Maps
  • Std. Latitude: 40.4651389
  • Std. Longitude: -103.0347222
  • Datum: WGS84
  • Township: 6N
  • Range: 51W
  • Section: 26
  • PLSS Details: 2,190 feet west and 670 feet south from the northeast corner
  • Location Description: 11.0 meters at a 70 degree angle (accounting for magnetic declination) from the southwest corner of the 40m x 40m plot to the center of the soil pit.
  • Map Unit: 92—Rago loam, 0 to 3 percent slopes
  • State: Colorado
  • County: CO075—Logan
  • MLRA: 72—Central High Tableland
  • MLRA Soil Survey Area: NW-FTM—Fort Morgan, Colorado
  • Non-MLRA Soil Survey Area: CO075—Logan County, Colorado
  • 7.5 Minute USGS Quad: 40103-D1—Buffalo Springs Ranch NE, Colorado

    • PEDON

  • Describers Name: Paul Rindfleisch
  • Current Taxonomic Class: Fine, smectitic, mesic Aridic Argiustolls
  • Current Taxon Kind: series
  • Pedon Type: classifies to current taxon name, full description
  • Pedon Purpose: research site
  • Pedon Record Orgin: NASIS
  • Pedon #: 8
  • Sampled As Information:
  • Soil Name - Weld
  • Taxonomic Class - Fine, smectitic, mesic Aridic Argiustolls
  • Taxon Kind - series
  • PSC - 11 to 43 cm.
  • Classificaton Date - 11/5/2015
  • Classifier - Andy Steinert
  • Soil Taxonomic Edition - twelfth edition
  • Moisture Class - ustic
  • Moisture SUBClass - aridic (torric)
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: alluvium and/or eolian deposits
  • Landscape: rolling plains
  • Landform: interfluve
  • Geomorphic Component Hills: base slope
  • Hill Slope Profile: footslope
  • Slope Complexity: simple
  • Slope Shape Across: linear
  • Slope Shape Down: concave
  • Runoff: medium
  • Ksat Class Upper: moderately low
  • Drainage Class: well
  • Flooding: none flooding
  • Ponding: none ponding
  • Surface Fragments:
  • Benchmark Soil?: no
  • RaCA Information:
  • RaCA Site ID - STER_018
  • DSP Plot ID - SW
  • Plot Baseline Azimuth - 70
  • Plot Baseline Length - 11
  • Plot Width - 40
  • Plot/Site Set Up By - Center of pit
  • Plot or Site Recorder - Andy Steinert

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 11/5/2015 (actual site observation date)
  • Data Collector: Andy Steinert
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - crop cover
  • Site Obs. Cover Kind 2 - row crop
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
  • Current Weather - overcast
  • Current Air Temp - 7
    • Pedon Horizon Lab Results - 1
    Horizon Top Depth Bottom Depth Sample ID Data Collector Total Clay CaCO3 Clay Total Silt Fine Silt Co. Silt Total Sand Total Sand Method VC Sand Co. Sand Med. Sand Fine Sand VF Sand VF Sand Method Texture Class - Field Lab Rubbed Fiber Unrubbed Fiber pH H2O
    cm cm % % % % % % % % % % % % %

    Bk1

    Bk2

    43

    85

    85

    100

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    Pedon Horizon Lab Results - 2
    Horizon Top Depth Bottom Depth Sample ID pH CaCl2 pH NaF pH Ox Delta pH LL PL PI Atter. Samp. Cond. COLE Pot. Acidity Ca + Mg - Meh 2 K Ca + Mg - Sat. Paste KCl Extract. Acidity Base Sat. - Meh 2 CEC-7 CEC-8.2
    cm cm % % % cm/cm meq/100g cmol(+)/kg cmol(+)/kg mmol(+)/l cmol(+)/kg % cmol(+)/kg cmol(+)/kg

    Bk1

    Bk2

    43

    85

    85

    100

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    Pedon Horizon Lab Results - 3
    Horizon Top Depth Bottom Depth Sample ID ECEC Phosphate P NO3-N EC EC Method EC 1:5 by volume CaCO3 Equiv. Equiv. Gypsum Na SAR Gypsum Req. Humic Color Fulvic Color Humic + Fulvic Color Al PI Pyro. Hue PyrO. Value Pyro. Chroma
    cm cm cmol(+)/kg mg/kg mg/kg dS/m dS/m % % mmol(+)/l % L-pcu/g L-pcu/g L-pcu/g %

    Bk1

    Bk2

    43

    85

    85

    100

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    12

    8

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    Pedon Diagnostic Features
    Feature Kind Feature Depth L-H Feature Thickness L-RV-H
    cm

    mollic epipedon

    argillic horizon

    secondary carbonates

    0—43

    11—43

    43—100

    —43—

    —32—

    —57—
    Setting and Climate
    Slope Slope Length USLE Upslope Length Elev. Corr. Elev Aspect MAP REAP FFD MAAT MSAT MWAT MAST MSST MWST MFFP PE Index Climate Station ID Climate Station Name Climate Station Type
    % m degrees mm mm C mm

    3

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    1363.4

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    215

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    Ap—0 to 11 centimeters (0.0 to 4.3 inches); dark grayish brown (10YR 4/2) broken face, very dark brown (10YR 2/2) broken face, moist; clay loam; 35 percent sand; 35 percent silt; 30 percent clay; weak medium subangular blocky, and weak fine subangular blocky, and weak fine granular structure; soft, friable, moderately sticky, moderately plastic; Ksat of 2.82 um/s; moderately slow permeability; common (1.0) very fine roots throughout and few (0.5) fine roots throughout; few (0.2) fine vesicular pores; 1 percent by volume nonflat rounded indurated 2-5-20 millimeter mixed fragments observed by visual inspection method; noneffervescent, by hcl, 1n; moderately acid, pH 5.8, pH meter; clear smooth boundary. Lab sample # 16N01321; observed in pit, small
    Bt1—11 to 21 centimeters (4.3 to 8.3 inches); very dark grayish brown (10YR 3/2) broken face, very dark brown (10YR 2/2) broken face, moist; clay loam; 30 percent sand; 34 percent silt; 36 percent clay; weak medium prismatic, and moderate medium angular blocky, and moderate coarse angular blocky structure; very hard, firm, moderately sticky, very plastic; Ksat of 0.915 um/s; slow permeability; few (0.5) very fine roots throughout and few (0.2) fine roots throughout; common (1.0) very fine vesicular and common (1.0) fine vesicular pores; 20 percent distinct clay films on vertical faces of peds; 3 percent by volume nonflat subrounded indurated 2-5-20 millimeter mixed fragments observed by visual inspection method; noneffervescent, by hcl, 1n; neutral, pH 6.6, pH meter; clear wavy boundary. Lab sample # 16N01322; observed in pit, small. discontinuous - phpvsfiid 1417320; discontinuous - phpvsfiid 1417320
    Bt2—21 to 43 centimeters (8.3 to 16.9 inches); brown (10YR 4/3) broken face, very dark grayish brown (10YR 3/2) broken face, moist; clay loam; 30 percent sand; 34 percent silt; 36 percent clay; strong coarse prismatic parts to moderate medium angular blocky, and strong medium prismatic parts to moderate fine angular blocky structure; very hard, firm, moderately sticky, very plastic; Ksat of 0.915 um/s; slow permeability; few (0.5) very fine roots throughout and few (0.2) fine roots throughout; common (2.0) very fine vesicular and few (0.5) medium vesicular and common (1.0) fine vesicular pores; 50 percent prominent clay films on vertical faces of peds; 1 percent by volume nonflat subrounded indurated 2-5-20 millimeter mixed fragments observed by visual inspection method; noneffervescent, by hcl, 1n; neutral, pH 7.0, pH meter; gradual wavy boundary. Lab sample # 16N01323; observed in pit, small. continuous - phpvsfiid 1417321; continuous - phpvsfiid 1417321
    Bk1—43 to 85 centimeters (16.9 to 33.5 inches); pale brown (10YR 6/3) broken face, brown (10YR 4/3) broken face, moist; loam; 35 percent sand; 43 percent silt; 22 percent clay; moderate coarse prismatic parts to moderate coarse subangular blocky, and moderate coarse prismatic parts to moderate medium subangular blocky structure; slightly hard, friable, moderately sticky, slightly plastic; Ksat of 9.17 um/s; moderate permeability; few (0.5) very fine roots throughout and few (0.2) fine roots throughout; few (0.2) very fine vesicular and few (0.1) fine vesicular pores; 2 percent fine threadlike carbonate masses on faces of peds and 1 percent fine irregular carbonate masses on bottom of rock fragments; 1 percent by volume nonflat subrounded indurated 2-5-20 millimeter mixed fragments observed by visual inspection method; strong effervescence, by hcl, 1n; moderately alkaline, pH 8.0, pH meter; gradual wavy boundary. Lab sample # 16N01324; observed in pit, small
    Bk2—85 to 100 centimeters (33.5 to 39.4 inches); brown (10YR 5/3) broken face, brown (10YR 4/3) broken face, moist; loam; 35 percent sand; 47 percent silt; 18 percent clay; weak coarse subangular blocky, and weak medium subangular blocky structure; slightly hard, friable, moderately sticky, slightly plastic; Ksat of 28.225 um/s; moderately rapid permeability; few (0.5) very fine roots throughout and few (0.2) fine roots throughout; few (0.2) very fine vesicular pores; 1 percent fine irregular carbonate masses on faces of peds and 1 percent fine irregular carbonate masses on bottom of rock fragments; 2 percent by volume nonflat subrounded indurated 2-5-20 millimeter mixed fragments observed by visual inspection method; strong effervescence, by hcl, 1n; moderately alkaline, pH 8.2, pH meter. Lab sample # 16N01325; observed in pit, small