IDENTIFIERS

  • Current Taxon Name (Soil Name): Eguaje
  • OSD
  • Series Extent
  • User Site ID: 88CO628008
  • User Pedon ID: 88CO628008
  • Vegetation Plot ID: 88CO628008
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Pedon # - 89P0151
  • NCSS Pedon Lab Data NASIS Record ID - 61255
  • User Project ID: 2023 - SW-SAN - 70A.3
  • Project Name: MLRA 70A.3 - Update to Volcanic Plateaus LRU
  • Print Date: 4/23/2025

    • 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: 37.1584167
  • Std. Longitude: -103.2783056
  • Datum: WGS84
  • Township: 33 S.
  • Range: 52 W.
  • Section: 20
  • PLSS Details: 500 feet west and 1050 feet south of the northeast corner
  • Location Description: 500 feet west and 1050 feet south of the northeast corner of section 20, T.33S., R.52W.
  • Map Unit: Ec—Eguaje-Demayo complex, 1 to 12 percent slopes, stony
  • State: Colorado
  • County: CO071—Las Animas
  • MLRA: 70A—High Plateaus of the Southwestern Great Plains
  • Non-MLRA Soil Survey Area: CO628—Las Animas County Area, Colorado, Parts of Huerfano and Las Animas Counties
  • 7.5 Minute USGS Quad: 37103-B3—Kim South, Colorado

    • PEDON

  • Describers Name: LAN
  • Current Taxonomic Class: Clayey-skeletal, smectitic, superactive, mesic Calcidic Argiustolls
  • Current Taxon Kind: series
  • Pedon Type: OSD pedon
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from PDP 3.x
  • Pedon #: 491
  • Correlated Information:
  • Soil Name - Eguaje
  • PSC - 13 to 71 cm.
  • Classificaton Date - 6/12/2012
  • Soil Taxonomic Edition - eighth edition
  • Moisture Class - ustic
  • Moisture Subclass - ustic
  • Sampled As Information:
  • Soil Name - Eguaje
  • Classificaton Date - 6/21/1988
  • Dynamic Soil Properties:
  • Erosion Class - 2
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: colluvium derived from basalt
  • Landscape: plains
  • Landform: mesa
  • Hill Slope Profile: summit
  • Slope Position: upper third
  • Runoff: medium
  • Drainage Class: well
  • Flooding: none flooding
  • Ponding: none ponding
  • Surface Fragments: 7.00 percent nonflat subangular indurated 250- to 600-millimeter basalt,
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 6/21/1988 (actual site observation date)
  • Air Photo ID: 1-20
  • Plant Association Name: Cobbly Foothills
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - grass/herbaceous cover
  • Site Obs. Cover Kind 2 - rangeland, grassland
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
    • 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

    Bt

    Btk1

    Btk1

    Btk2

    Btk2

    Bk

    Bk

    0

    13

    36

    36

    48

    48

    71

    71

    13

    36

    —

    48

    —

    71

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    152

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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

    Bt

    Btk1

    Btk1

    Btk2

    Btk2

    Bk

    Bk

    0

    13

    36

    36

    48

    48

    71

    71

    13

    36

    —

    48

    —

    71

    —

    152

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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

    Bt

    Btk1

    Btk1

    Btk2

    Btk2

    Bk

    Bk

    0

    13

    36

    36

    48

    48

    71

    71

    13

    36

    —

    48

    —

    71

    —

    152

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    0

    0

    17

    17

    34

    34

    40

    40

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    Vegetation Plot Plants
    Plant Symbol Scientific Name National Vernacular Name Plant Type Group Canopy Cover % Vegetation Stata Level

    ANGE

    ARLO

    BOGR

    BOGR2

    JUNIP

    SCSC

    YUCCA

    Andropogon gerardii

    Arenaria longipedunculata

    Boerhavia gracillima

    Bouteloua gracilis

    Juniperus

    Schizachyrium scoparium

    Yucca

    big bluestem

    longstem sandwort

    slimstalk spiderling

    blue grama

    juniper

    little bluestem

    yucca

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

    mollic epipedon

    argillic horizon

    calcic horizon

    0—36

    13—71

    36—152

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    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

    8

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    1737

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    180

    406

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    10

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    8.9

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    A—0 to 13 centimeters (0.0 to 5.1 inches); dark grayish brown (10YR 4/2), very dark brown (10YR 2/2), moist; cobbly clay loam; 30 percent clay; moderate fine and medium granular structure; slightly hard, friable, slightly sticky, slightly plastic; moderate permeability; 10.0 very fine and fine roots throughout; 6 percent by volume nonflat indurated 250-425-600 millimeter basalt fragments and 10 percent by volume nonflat indurated 75-162-250 millimeter basalt fragments and 10 percent by volume nonflat indurated 2-39-75 millimeter basalt fragments; noneffervescent; neutral, pH 7.2, hellige-truog; clear smooth boundary.; moist when described; observed in pit, small
    Bt—13 to 36 centimeters (5.1 to 14.2 inches); brown (10YR 4/3), dark brown (10YR 3/3), moist; very cobbly clay loam; 39 percent clay; moderate fine and medium subangular blocky structure; hard, firm, moderately sticky, moderately plastic; moderately slow permeability; 5.0 very fine and fine roots throughout; 40 percent distinct clay films on faces of peds; 20 percent by volume nonflat indurated 2-39-75 millimeter basalt fragments and 20 percent by volume nonflat indurated 75-162-250 millimeter basalt fragments; noneffervescent; slightly alkaline, pH 7.4, hellige-truog; abrupt smooth boundary.; moist when described;. continuous - phpvsfiid 110700; continuous - phpvsfiid 110700
    Btk1—36 to 48 centimeters (14.2 to 18.9 inches); brown (10YR 5/3), brown (10YR 4/3), moist; very gravelly clay loam; 39 percent clay; moderate fine subangular blocky structure; hard, firm, moderately sticky, moderately plastic; slow permeability; 10 percent distinct clay films on faces of peds; 5 percent medium irregular lime masses throughout; 5 percent by volume nonflat indurated 250-425-600 millimeter basalt fragments and 10 percent by volume nonflat indurated 75-162-250 millimeter basalt fragments and 30 percent by volume nonflat indurated 2-39-75 millimeter basalt fragments; violent effervescence, by hcl, 1n; moderately alkaline, pH 8.0, hellige-truog; gradual smooth boundary.; dry when described;. continuous - phpvsfiid 110701; continuous - phpvsfiid 110701
    Btk2—48 to 71 centimeters (18.9 to 28.0 inches); pale brown (10YR 6/3), brown (10YR 4/3), moist; very gravelly clay loam; 35 percent clay; weak fine subangular blocky structure; slightly hard, friable, moderately sticky, moderately plastic; moderately slow permeability; 0.5 very fine roots throughout; 5 percent faint clay films on faces of peds; 5 percent medium irregular lime masses throughout; 20 percent by volume nonflat indurated 75-162-250 millimeter basalt fragments and 35 percent by volume nonflat indurated 2-39-75 millimeter basalt fragments; violent effervescence, by hcl, 1n; moderately alkaline, pH 8.2, hellige-truog; clear smooth boundary.; dry when described;. patchy - phpvsfiid 110702; patchy - phpvsfiid 110702
    Bk—71 to 152 centimeters (28.0 to 59.8 inches); very pale brown (10YR 7/3), brown (10YR 5/3), moist; very cobbly clay loam; 32 percent clay; massive; slightly hard, friable, slightly sticky, slightly plastic; moderately slow permeability; 0.1 very fine roots throughout; 25 percent by volume nonflat indurated 75-162-250 millimeter basalt fragments and 30 percent by volume nonflat indurated 250-425-600 millimeter basalt fragments; violent effervescence, by hcl, 1n; moderately alkaline, pH 8.4, hellige-truog.; dry when described;