IDENTIFIERS

  • Current Taxon Name (Soil Name): Nunn
  • OSD
  • Series Extent
  • User Site ID: S2012CO069001
  • User Pedon ID: S2012CO069001
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 12N8341
  • NCSS Pedon Lab Data NASIS Record ID - 73125
  • Print Date: 4/22/2025

    • 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: 40.4790556
  • Std. Longitude: -105.0130278
  • Datum: WGS84
  • Township: 6N
  • Range: 68W
  • Section: 21
  • Map Unit: 63—Longmont clay, 0 to 3 percent slopes
  • State: Colorado
  • County: CO069—Larimer
  • MLRA: 67B—Central High Plains, Southern Part
  • MLRA Soil Survey Area: NW-FTM—Fort Morgan, Colorado
  • Non-MLRA Soil Survey Area: CO644—Larimer County Area, Colorado
  • 7.5 Minute USGS Quad: 40105-D1—Loveland, Colorado

    • PEDON

  • Describers Name: Mike Moore, Andy Steinert, Matt Levi, Andrew Ernakovich
  • Current Taxonomic Class: Fine, smectitic, mesic Aridic Argiustolls
  • Current Taxon Kind: series
  • Pedon Type: classifies to current taxon name, full description
  • Pedon Purpose: laboratory sampling site
  • Pedon Record Orgin: Pedon PC 5.0
  • Pedon #: 1
  • Correlated Information:
  • Soil Name - Nunn
  • PSC - 40 to 90 cm.
  • Classificaton Date - 8/5/2013
  • Classifier - Andy Steinert
  • Soil Taxonomic Edition - eleventh edition
  • Moisture Class - ustic
  • Moisture Subclass - aridic (torric)
  • Sampled As Information:
  • Soil Name - Nunn
  • Taxonomic Class - Fine, smectitic, mesic Aridic Argiustolls
  • Taxon Kind - series
  • Classificaton Date - 8/24/2012
  • Classifier - Mike Moore
  • Soil Taxonomic Edition - eleventh edition
  • Moisture Class - ustic
  • Moisture SUBClass - aridic (torric)
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no
  • QC Status: level 1


    • SITE

  • Parent Material: alluvium
  • Landform: drainageway
  • Slope Complexity: simple
  • Slope Shape Across: concave
  • 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

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 8/16/2012 (actual site observation date)
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - crop cover
  • Site Obs. Cover Kind 2 - close-grown crop
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
  • Current Weather - overcast
  • Current Air Temp - 21
    • Pedon Diagnostic Features
    Feature Kind Feature Depth L-H Feature Thickness L-RV-H
    cm

    mollic epipedon

    argillic horizon

    0—40

    40—169

    —40—

    —129—
    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

    0.5

    —

    —

    1504

    —

    360

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    Ap—0 to 8 centimeters (0.0 to 3.1 inches); very dark grayish brown (10YR 3/2), very dark gray (10YR 3/1), moist; silty clay; 2 percent sand; 50 percent silt; 48 percent clay; moderate medium angular blocky structure; very hard, very firm, very sticky, very plastic; Ksat of 0.915 um/s; slow permeability; few (1.0) medium roots throughout and common (2.0) fine roots throughout and few (1.0) coarse roots throughout; fragments; noneffervescent, by hcl, 1n; slightly alkaline, pH 7.8, pH meter; clear smooth boundary.; observed in push tube
    Bw—8 to 40 centimeters (3.1 to 15.7 inches); dark grayish brown (10YR 4/2), very dark grayish brown (2.5Y 3/2), moist; silty clay; 2 percent sand; 50 percent silt; 48 percent clay; strong coarse prismatic parts to strong fine angular blocky structure; very hard, very firm, very sticky, very plastic; Ksat of 0.915 um/s; slow permeability; few (1.0) medium roots throughout and common (2.0) fine roots throughout; 15 percent distinct clay films on all faces of peds; fragments; noneffervescent, by hcl, 1n; moderately alkaline, pH 8.0, pH meter; clear smooth boundary.; observed in push tube. discontinuous - phpvsfiid 1038078; discontinuous - phpvsfiid 1038078
    Btk1—40 to 79 centimeters (15.7 to 31.1 inches); light olive brown (2.5Y 5/3), olive brown (2.5Y 4/3), moist; silty clay; 2 percent sand; 43 percent silt; 55 percent clay; strong coarse prismatic parts to strong fine angular blocky structure; very hard, very firm, very sticky, very plastic; Ksat of 0.915 um/s; slow permeability; few (1.0) medium roots throughout and few (1.0) fine roots throughout; 30 percent distinct clay films on all faces of peds; 1 percent fine prominent irregular noncoherent cemented carbonate masses in matrix; fragments; slight effervescence, by hcl, 1n; moderately alkaline, pH 8.1, pH meter; clear smooth boundary.; observed in push tube. discontinuous - phpvsfiid 1038079; discontinuous - phpvsfiid 1038079
    Btk2—79 to 112 centimeters (31.1 to 44.1 inches); light olive brown (2.5Y 5/4), olive brown (2.5Y 4/3), moist; silty clay; 2 percent sand; 43 percent silt; 55 percent clay; strong coarse prismatic parts to strong fine angular blocky structure; very hard, very firm, very sticky, very plastic; Ksat of 0.915 um/s; slow permeability; few (1.0) medium roots throughout and few (1.0) fine roots throughout; 30 percent distinct clay films on all faces of peds; 4 percent medium prominent irregular noncoherent cemented carbonate masses in matrix; fragments; slight effervescence, by hcl, 1n; moderately alkaline, pH 8.4, pH meter; clear smooth boundary.; observed in push tube. discontinuous - phpvsfiid 1038080; discontinuous - phpvsfiid 1038080
    Btk3—112 to 147 centimeters (44.1 to 57.9 inches); brown (10YR 4/3), olive brown (2.5Y 4/3), moist; silty clay; 2 percent sand; 43 percent silt; 55 percent clay; strong coarse prismatic parts to strong fine angular blocky structure; very hard, very firm, very sticky, very plastic; Ksat of 0.915 um/s; slow permeability; few (1.0) medium roots throughout and few (1.0) fine roots throughout; 30 percent distinct clay films on all faces of peds; 1 percent fine prominent irregular noncoherent cemented carbonate masses in matrix; fragments; strong effervescence, by hcl, 1n; moderately alkaline, pH 8.2, pH meter; clear smooth boundary.; observed in push tube. discontinuous - phpvsfiid 1038081; discontinuous - phpvsfiid 1038081
    Bt—147 to 169 centimeters (57.9 to 66.5 inches);, olive brown (2.5Y 4/3), moist; silty clay; 42 percent silt; 58 percent clay; weak coarse prismatic parts to weak medium angular blocky structure; very firm, very sticky, very plastic; Ksat of 0.915 um/s; slow permeability; few (0.1) fine roots throughout; 10 percent distinct clay films on all faces of peds; carbonate, finely disseminated throughout; fragments; strong effervescence, by hcl, 1n; moderately alkaline, pH 8.1, pH meter; clear smooth boundary.; observed in push tube. discontinuous - phpvsfiid 1038082; discontinuous - phpvsfiid 1038082
    Bz—169 to 214 centimeters (66.5 to 84.3 inches);, dark grayish brown (2.5Y 4/2), moist; silty clay; 45 percent silt; 55 percent clay; weak coarse prismatic parts to weak medium angular blocky structure; firm, very sticky, very plastic; Ksat of 0.915 um/s; slow permeability; 20 percent fine prominent irregular noncoherent cemented salt crystals throughout; fragments; slight effervescence, by hcl, 1n; moderately alkaline, pH 8.0, pH meter; clear smooth boundary.; observed in push tube