IDENTIFIERS

  • Current Taxon Name (Soil Name): sili
  • OSD
  • Series Extent
  • User Site ID: S2003CO-007-004-SILI_SAMPLE
  • User Pedon ID: 03CO007004
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 03N0792
  • NCSS Pedon Lab Data NASIS Record ID - 15628
  • Print Date: 11/23/2024

    • 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: 37.0386314
  • Std. Longitude: -107.4611816
  • Datum: WGS84
  • Township: 32 N.
  • Range: 6 W.
  • Section: 2
  • PLSS Details: southeast quarter of the southeast quarter
  • Map Unit: V7-C—Sili clay loam, 3 to 6 percent slopes
  • State: Colorado
  • County: CO007—Archuleta
  • MLRA: 36—Southwestern Plateaus, Mesas, and Foothills
  • Non-MLRA Soil Survey Area: CO668—Archuleta County Area, Colorado
  • 7.5 Minute USGS Quad: 37107-A4—Allison, Colorado

    • PEDON

  • Describers Name: J.P. Pannell
  • Current Taxonomic Class: Fine, smectitic, mesic Aridic Haplustepts
  • Current Taxon Kind: series
  • Pedon Type: within range of map unit
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: NASIS
  • Pedon #: 4
  • Correlated Information:
  • Soil Name - sili
  • PSC - 25 to 100 cm.
  • Classificaton Date - 11/29/2004
  • Soil Taxonomic Edition - second edition
  • Moisture Class - ustic
  • Moisture Subclass - aridic (torric)
  • Sampled As Information:
  • Soil Name - sili
  • Classificaton Date - 4/3/2003
  • Dynamic Soil Properties:
  • Erosion Class - 1
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: slope alluvium derived from shale
  • Landform: pediment
  • Geomorphic Component Hills: base slope
  • Hill Slope Profile: toeslope
  • Slope Position: upper third
  • Slope Complexity: simple
  • Slope Shape Across: linear
  • Slope Shape Down: linear
  • Runoff: high
  • Drainage Class: well
  • Flooding: none flooding
  • Ponding: none ponding
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 4/3/2003 (actual site observation date)
  • Air Photo ID: 4AA-198
  • Plant Association Name: Sagebrush-grass
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - shrub cover
  • Site Obs. Cover Kind 2 - rangeland, shrubby
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
  • Site Erosion Accelerated: water erosion sheet
    • 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 % % % % % % % % % % % % %

    A

    Bw

    C1

    C2

    0

    18

    81

    109

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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

    A

    Bw

    C1

    C2

    0

    18

    81

    109

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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 %

    A

    Bw

    C1

    C2

    0

    18

    81

    109

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

    ochric epipedon

    cambic horizon

    0—18

    18—81

    —18—

    —63—
    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

    5

    500

    100

    1935

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    135

    356

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    120

    8.9

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    10.5

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    4250

    Ignacio, CO

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    A—0 to 18 centimeters (0.0 to 7.1 inches); grayish brown (10YR 5/2) exterior, dark grayish brown (10YR 4/2) exterior, moist; clay loam; slightly hard, friable, moderately sticky, moderately plastic; moderately slow permeability; low excavation difficulty; 2.0 fine roots throughout; fragments; strong effervescence, by hcl, unspecified; slightly alkaline, pH 7.8, phenol red; clear smooth boundary.; observed in pit, small
    Bw—18 to 81 centimeters (7.1 to 31.9 inches); grayish brown (10YR 5/2) exterior, dark grayish brown (10YR 4/2) exterior, moist; clay loam; hard, firm, very sticky, very plastic; slow permeability; moderate excavation difficulty; 2.0 very fine roots throughout; 2.0 very fine tubular pores; 5 percent by volume nonflat strongly coherent cemented 2-38-75 millimeter sandstone, unspecified fragments; strong effervescence, by hcl, unspecified; slightly alkaline, pH 7.8, phenol red; gradual smooth boundary. Lab sample # 03N04001; observed in pit, small
    C1—81 to 109 centimeters (31.9 to 42.9 inches); pale brown (10YR 6/3) exterior, brown (10YR 5/3) crushed, moist; clay loam; hard, firm, moderately sticky, moderately plastic; slow permeability; moderate excavation difficulty; 1.0 very fine roots throughout; 2.0 very fine tubular pores; fragments; strong effervescence, by hcl, unspecified; moderately alkaline, pH 8.0, phenol red; gradual smooth boundary.; observed in pit, small
    C2—109 to 152 centimeters (42.9 to 59.8 inches); pale brown (10YR 6/3) exterior, brown (10YR 5/3) crushed, moist; clay loam; hard, friable, moderately sticky, moderately plastic; moderately slow permeability; moderate excavation difficulty; 1.0 very fine roots throughout; 2.0 very fine tubular pores; fragments; strong effervescence, by hcl, unspecified; moderately alkaline, pH 8.2, phenol red.; observed in pit, small