IDENTIFIERS

  • Current Taxon Name (Soil Name): Grayco
  • OSD
  • Series Extent
  • User Site ID: S2000CO023015
  • User Pedon ID: S2000CO023001
  • Vegetation Plot ID: S2000CO023015
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 00P1246
  • NCSS Pedon Lab Data NASIS Record ID - 12742
  • Print Date: 11/21/2024

    • 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: 37.0194435
  • Std. Longitude: -105.5919418
  • Datum: WGS84
  • Location Description: Graypoint Pit
  • Map Unit: GrA—Grayco sandy loam, 0 to 2 percent slopes
  • State: Colorado
  • County: CO023—Costilla
  • MLRA: 51—High Intermountain Valleys
  • Non-MLRA Soil Survey Area: CO023—Costilla County Area, Colorado

    • PEDON

  • Describers Name: Alan Stuebe/Harold Hyde/Marisa Rice
  • Current Taxonomic Class: Coarse-loamy, mixed, superactive, frigid Ustic Calciargids
  • Current Taxon Kind: series
  • Pedon Type: OSD pedon
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: NASIS
  • Pedon #: 1
  • Correlated Information:
  • Soil Name - Grayco
  • Classificaton Date - 6/15/2007
  • Moisture Class - ustic
  • Moisture Subclass - ustic
  • Sampled As Information:
  • Soil Name - Grayco
  • Taxonomic Class - Coarse-loamy, mixed, superactive, frigid Ustic Cal
  • Classificaton Date - 6/26/2000
  • Moisture Class - aridic (torric)
  • Moisture SUBClass - ustic
  • Dynamic Soil Properties:
  • Erosion Class - 2
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: sandy and gravelly mixed alluvium over outwash
  • Landscape: valley
  • Landform: outwash plain
  • Runoff: negligible
  • Drainage Class: well
  • Flooding: none flooding
  • Ponding: none ponding
  • Surface Fragments: 25.00 percent nonflat subrounded 2- to 20-millimeter granite,
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 6/26/2000 (actual site observation date)
  • Air Photo ID: 6675-101
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - shrub cover
  • 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 % % % % % % % % % % % % %

    Btk2

    2Btk3

    2Btk4

    38

    48

    64

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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

    Btk2

    2Btk3

    2Btk4

    38

    48

    64

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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 %

    Btk2

    2Btk3

    2Btk4

    38

    48

    64

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    20

    8

    8

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

    ARTRW8

    BOGR2

    CHRYS9

    SPCR

    Artemisia tridentata ssp. wyomingensis

    Bouteloua gracilis

    Chrysothamnus

    Sporobolus cryptandrus

    Wyoming big sagebrush

    blue grama

    rabbitbrush

    sand dropseed

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

    ochric epipedon

    argillic horizon

    calcic horizon

    0—13

    13—38

    38—94

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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

    1

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    2322.6

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    275

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    100

    5.6

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    A1—0 to 3 centimeters (0.0 to 1.2 inches); dark yellowish brown (10YR 4/4) crushed, yellowish brown (10YR 5/4) crushed, dry; gravelly sandy loam; 67 percent sand; 21 percent silt; 12 percent clay; weak fine granular structure; soft, very friable, slightly sticky, slightly plastic; 2.0 very fine roots throughout and 2.0 fine roots throughout; 2.0 very fine dendritic tubular and 2.0 fine dendritic tubular pores; 1 percent by volume nonflat subrounded 20-45-75 millimeter granite fragments and 5 percent by volume nonflat subrounded 2-3-5 millimeter granite fragments and 21 percent by volume nonflat subrounded 5-15-20 millimeter granite fragments; noneffervescent, by hcl, 1n; neutral, pH 7.0, phenol red; clear smooth boundary. Lab sample # 00P07260; observed in pit, large or quarry
    A2—3 to 13 centimeters (1.2 to 5.1 inches); brown (10YR 4/3) crushed, yellowish brown (10YR 5/4) crushed, dry; gravelly sandy loam; 67 percent sand; 20 percent silt; 13 percent clay; weak fine subangular blocky structure; soft, very friable, slightly sticky, slightly plastic; 2.0 very fine roots throughout and 2.0 medium roots throughout and 2.0 fine roots throughout; 2.0 very fine dendritic tubular and 2.0 medium dendritic tubular and 2.0 fine dendritic tubular pores; 6 percent by volume nonflat subrounded 2-3-5 millimeter granite fragments and 11 percent by volume nonflat subrounded 5-15-20 millimeter granite fragments; noneffervescent, by hcl, 1n; neutral, pH 7.0, phenol red; clear smooth boundary. Lab sample # 00P07261; observed in pit, large or quarry
    Btk1—13 to 38 centimeters (5.1 to 15.0 inches); brown (10YR 4/3) crushed, light yellowish brown (10YR 6/4) crushed, dry; sandy loam; 64 percent sand; 21 percent silt; 14 percent clay; moderate coarse prismatic parts to moderate medium subangular blocky structure; slightly hard, friable, moderately sticky, moderately plastic; 2.0 very fine roots throughout and 2.0 medium roots throughout and 2.0 fine roots throughout and 2.0 coarse roots throughout; 2.0 very fine dendritic tubular and 2.0 medium dendritic tubular and 2.0 fine dendritic tubular and 2.0 coarse dendritic tubular pores; 5 percent faint clay bridges on bottom of rock fragments; 1 percent threadlike carbonate masses in matrix; 3 percent by volume nonflat subrounded 2-3-5 millimeter granite fragments and 4 percent by volume nonflat subrounded 5-15-20 millimeter granite fragments; noneffervescent, by hcl, 1n; neutral, pH 7.0, phenol red; clear wavy boundary. Lab sample # 00P07262; observed in pit, large or quarry. discontinuous - phpvsfiid 325518; discontinuous - phpvsfiid 325518
    Btk2—38 to 48 centimeters (15.0 to 18.9 inches); light yellowish brown (10YR 6/4) crushed, very pale brown (10YR 8/2) crushed, dry; very gravelly sandy loam; 65 percent sand; 21 percent silt; 14 percent clay; moderate fine subangular blocky structure; slightly hard, friable, moderately sticky, moderately plastic; 2.0 medium roots throughout and 2.0 fine roots throughout; 2.0 medium dendritic tubular and 2.0 medium vesicular and 2.0 fine vesicular and 2.0 fine dendritic tubular pores; 28 percent distinct clay films on all faces of peds; 27 percent carbonate masses around rock fragments and 5 percent threadlike carbonate masses in matrix; 1 percent by volume nonflat subrounded 20-45-75 millimeter granite fragments and 13 percent by volume nonflat subrounded 2-3-5 millimeter granite fragments and 28 percent by volume nonflat subrounded 5-15-20 millimeter granite fragments; strong effervescence, by hcl, 1n; moderately alkaline, pH 8.3, phenol red; gradual wavy boundary. Lab sample # 00P07263; observed in pit, large or quarry. discontinuous - phpvsfiid 325519; discontinuous - phpvsfiid 325519
    2Btk3—48 to 64 centimeters (18.9 to 25.2 inches); brown (10YR 5/3) crushed, pale brown (10YR 6/3) crushed, dry; very gravelly sandy loam; 70 percent sand; 17 percent silt; 13 percent clay; single grain; loose, loose, slightly sticky, slightly plastic; 2.0 very fine roots throughout and 2.0 medium roots throughout and 2.0 fine roots throughout; 2.0 very fine irregular and 2.0 medium irregular and 2.0 fine irregular pores; 14 percent distinct clay films throughout; 20 percent carbonate masses on bottom of rock fragments and 6 percent threadlike carbonate masses in matrix; 2 percent by volume nonflat subrounded 20-45-75 millimeter granite fragments and 14 percent by volume nonflat subrounded 2-3-5 millimeter granite fragments and 37 percent by volume nonflat subrounded 5-15-20 millimeter granite fragments; slight effervescence, by hcl, 1n; moderately alkaline, pH 8.0, phenol red; gradual wavy boundary. Lab sample # 00P07264; observed in pit, large or quarry. discontinuous - phpvsfiid 325520; discontinuous - phpvsfiid 325520
    2Btk4—64 to 94 centimeters (25.2 to 37.0 inches); grayish brown (10YR 5/2) crushed, light brownish gray (10YR 6/2) crushed, dry; very gravelly coarse sand; 94 percent sand; 3 percent silt; 2 percent clay; single grain; loose, loose, nonsticky, nonplastic; 2.0 very fine roots throughout and 2.0 medium roots throughout and 2.0 fine roots throughout; 2.0 very fine irregular and 2.0 medium irregular and 2.0 fine irregular pores; 14 percent distinct clay films throughout; 20 percent carbonate masses on bottom of rock fragments and 1 percent threadlike carbonate masses in matrix; 13 percent by volume nonflat subrounded 2-3-5 millimeter granite fragments and 42 percent by volume nonflat subrounded 5-15-20 millimeter granite fragments; slight effervescence, by hcl, 1n; slightly alkaline, pH 7.4, phenol red; gradual wavy boundary. Lab sample # 00P07265; observed in pit, large or quarry. discontinuous - phpvsfiid 325521; discontinuous - phpvsfiid 325521
    2C1—94 to 165 centimeters (37.0 to 65.0 inches); brown (10YR 5/3) crushed, pale brown (10YR 6/3) crushed, dry; very gravelly coarse sand; 94 percent sand; 3 percent silt; 3 percent clay; single grain; loose, loose, nonsticky, nonplastic; 2.0 very fine roots throughout and 2.0 medium roots throughout and 2.0 fine roots throughout; 2.0 very fine irregular and 2.0 medium irregular and 2.0 fine irregular pores; 15 percent by volume nonflat subrounded 2-3-5 millimeter granite fragments and 41 percent by volume nonflat subrounded 5-15-20 millimeter granite fragments; noneffervescent, by hcl, 1n; slightly alkaline, pH 7.4, phenol red. Lab sample # 00P07266; observed in pit, large or quarry
    2C2—165 to 194 centimeters (65.0 to 76.4 inches); brown (10YR 5/3) crushed, pale brown (10YR 6/3) crushed, dry; very gravelly coarse sand; 98 percent sand; 0 percent silt; 2 percent clay; single grain; loose, loose, nonsticky, nonplastic; 2.0 very fine roots throughout and 2.0 medium roots throughout and 2.0 fine roots throughout; 2.0 very fine irregular and 2.0 medium irregular and 2.0 fine irregular pores; 10 percent by volume nonflat subrounded 2-3-5 millimeter granite fragments and 29 percent by volume nonflat subrounded 5-15-20 millimeter granite fragments; noneffervescent, by hcl, 1n; slightly alkaline, pH 7.4, phenol red. Lab sample # 00P07267; observed in pit, large or quarry