IDENTIFIERS

  • Current Taxon Name (Soil Name): Blackston
  • OSD
  • Series Extent
  • User Site ID: S1992UT037156B
  • User Pedon ID: 92UT037156B
  • Vegetation Plot ID: S1992UT037156B
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 92P1017
  • NCSS Pedon Lab Data NASIS Record ID - 65256
  • Print Date: 11/13/2024

    • 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: 38.3366661
  • Std. Longitude: -109.8748627
  • Datum: WGS84
  • Township: 28S
  • Range: 19E
  • Section: 30
  • PLSS Details: 3500 feet W and 2650 feet N of SE corner
  • State: Utah
  • County: UT037—San Juan
  • MLRA: 35—Colorado Plateau
  • Non-MLRA Soil Survey Area: UT633—Canyonlands Area, Utah - Parts of Grand and San Juan Counties

    • PEDON

  • Describers Name: Paul Menard and Leland Sasser
  • Pedon Type: map unit inclusion
  • Pedon Record Orgin: Converted from PDP 3.x
  • Pedon #: 156
  • Sampled As Information:
  • Soil Name - Blackston
  • Taxonomic Class - Loamy-skeletal, mixed Typic Calciorthids
  • PSC - 25 to 100 cm.
  • Classificaton Date - 8/13/1992
  • Moisture Class - udic
  • Dynamic Soil Properties:
  • Erosion Class - 1
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Landform: alluvial fan
  • Slope Position: lower third
  • Slope Shape Across: convex
  • Slope Shape Down: convex
  • Runoff: medium
  • Drainage Class: well
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 8/13/1992 (actual site observation date)
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - other
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
  • Site Erosion Accelerated: water erosion
    • 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

    Bk

    Bk

    C

    C

    0

    5

    15

    15

    48

    48

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    48

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    91

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    20

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    25

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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

    Bk

    Bk

    C

    C

    0

    5

    15

    15

    48

    48

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    48

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    91

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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

    Bk

    Bk

    C

    C

    0

    5

    15

    15

    48

    48

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    48

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    91

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

    ACHY

    ATCO

    CORA

    PLEUR12

    Achnatherum hymenoides

    Atriplex confertifolia

    Coleogyne ramosissima

    Pleuraphis

    Indian ricegrass

    shadscale saltbush

    blackbrush

    galleta grass

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

    ochric epipedon

    coprogenous earth

    0—5

    15—48

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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

    7

    2

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    1550

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    180

    203

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    12.2

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    Moab

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    A—0 to 5 centimeters (0.0 to 2.0 inches); light reddish brown (5YR 6/4), yellowish red (5YR 4/6), moist; very gravelly fine sandy loam; 63 percent sand; 20 percent silt; 17 percent clay; moderate medium platy structure; slightly hard, very friable, slightly sticky, slightly plastic; moderately slow permeability; 3.0 very fine and fine roots and 0.5 medium and coarse roots; 21.0 very fine tubular and 0.5 fine tubular pores; 10 percent by volume 75-162-250 millimeter unspecified fragments and 10 percent by volume 250-425-600 millimeter unspecified fragments and 35 percent by volume 2-39-75 millimeter unspecified fragments; slight effervescence; moderately alkaline, pH 8.0, hellige-truog; abrupt smooth boundary. Lab sample # 92P06329
    Bw—5 to 15 centimeters (2.0 to 5.9 inches); reddish yellow (5YR 6/6), yellowish red (5YR 5/6), moist; very gravelly sandy clay loam; 59 percent sand; 20 percent silt; 21 percent clay; weak fine and medium subangular blocky structure; slightly hard, friable, slightly sticky, slightly plastic; moderate permeability; 3.0 very fine and fine roots and 0.5 medium and coarse roots; 3.0 very fine and fine tubular pores; 5 percent by volume 250-425-600 millimeter unspecified fragments and 15 percent by volume 75-162-250 millimeter unspecified fragments and 40 percent by volume 2-39-75 millimeter unspecified fragments; strong effervescence; moderately alkaline, pH 8.2, hellige-truog; clear wavy boundary. Lab sample # 92P06330
    Bk—15 to 48 centimeters (5.9 to 18.9 inches); light reddish brown (5YR 6/4), yellowish red (5YR 5/6), moist; extremely gravelly fine sandy loam; 67 percent sand; 15 percent silt; 18 percent clay; weak fine subangular blocky structure; slightly hard, very friable, slightly sticky, slightly plastic; moderate permeability; 3.0 very fine roots and 0.5 fine and medium roots; 3.0 very fine tubular and 0.5 fine tubular pores; distinct carbonate coats on rock fragments; 5 percent by volume 250-425-600 millimeter unspecified fragments and 20 percent by volume 75-162-250 millimeter unspecified fragments and 50 percent by volume 2-39-75 millimeter unspecified fragments; violent effervescence; strongly alkaline, pH 8.6, hellige-truog; clear wavy boundary. Moderately thick CaCO3 coating on rock fragments
    C—48 to 91 centimeters (18.9 to 35.8 inches); yellowish red (5YR 5/6), red (2.5YR 4/8), moist; extremely gravelly fine sandy loam; 74 percent sand; 15 percent silt; 11 percent clay; single grain; loose, loose, nonsticky, slightly plastic; moderately slow permeability; 0.5 very fine and fine roots; 21.0 very fine interstitial and tubular pores; 5 percent by volume 250-425-600 millimeter unspecified fragments and 20 percent by volume 75-162-250 millimeter unspecified fragments and 45 percent by volume 2-39-75 millimeter unspecified fragments; strong effervescence; moderately alkaline, pH 8.2, hellige-truog. Large stone at 90 cm.