IDENTIFIERS

  • Current Taxon Name (Soil Name): Blackflat
  • OSD
  • Series Extent
  • User Site ID: 31104-E5-006
  • User Pedon ID: S2008-TX109-006
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 08N0265
  • Print Date: 11/12/2024

    • 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: 31.5526218
  • Std. Longitude: -104.5632706
  • Datum: WGS84
  • State: Texas
  • County: TX109—Culberson
  • MLRA: 42—Southern Desertic Basins, Plains, and Mountains

    • PEDON

  • Describers Name: Alan Stahnke, Gary Harris, Jo Parsley, and Rusty Dowell
  • Current Taxonomic Class: Fine-silty, mixed, active, thermic Aridic Argiustolls
  • Pedon Type: taxadjunct to the series
  • Pedon Purpose: laboratory sampling site
  • Pedon Record Orgin: PedonPC
  • Pedon #: 6
  • Correlated Information:
  • Soil Name - Blackflat
  • PSC - 22 to 72 cm.
  • Classificaton Date - 9/15/2020
  • Classifier - Lynn Loomis
  • Soil Taxonomic Edition - twelfth edition
  • Moisture Class - ustic
  • Moisture Subclass - ustic
  • Sampled As Information:
  • Soil Name - Blackflat
  • Taxonomic Class - Fine-loamy, mixed, superactive, thermic Aridic Haplustolls
  • PSC - 25 to 100 cm.
  • Classificaton Date - 1/9/2008
  • Soil Taxonomic Edition - tenth edition
  • Moisture Class - ustic
  • Moisture SUBClass - aridic (torric)
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Landscape: valley
  • Landform: alluvial flat
  • Hill Slope Profile: toeslope
  • Slope Position: middle third
  • Slope Complexity: simple
  • Slope Shape Across: concave
  • Slope Shape Down: linear
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 1/9/2008 (actual site observation date)
  • 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 Diagnostic Features
    Feature Kind Feature Depth L-H Feature Thickness L-RV-H
    cm

    mollic epipedon

    cambic horizon

    0—40

    22—200

    —40—

    —81—
    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

    2.5

    —

    —

    1420

    —

    120

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    A1—0 to 8 centimeters (0.0 to 3.1 inches); brown (7.5YR 4/2), dark brown (7.5YR 3/3), moist; very fine sandy loam; 16 percent clay; weak fine subangular blocky structure; soft, friable, noncoherent, nonsticky, slightly plastic; low excavation difficulty; 5.0 fine roots throughout; 1.0 fine moderate-continuity irregular pores; fragments; slight effervescence, by hcl, 1n; clear smooth boundary. Lab sample # 08N01677; moderately dry when described; observed in trench
    A2—8 to 22 centimeters (3.1 to 8.7 inches); brown (7.5YR 4/3), dark brown (7.5YR 3/3), moist; silt loam; 17 percent clay; weak medium subangular blocky structure; soft, friable, noncoherent, slightly sticky, slightly plastic; low excavation difficulty; 5.0 fine roots throughout; 1.0 fine moderate-continuity irregular pores; fragments; strong effervescence, by hcl, 1n; clear smooth boundary. Lab sample # 08N01678; moderately dry when described; observed in trench
    Bt1—22 to 40 centimeters (8.7 to 15.7 inches); brown (7.5YR 4/3), dark brown (7.5YR 3/3), moist; silt loam; 24 percent clay; moderate medium subangular blocky structure; slightly hard, friable, noncoherent, moderately sticky, moderately plastic; low excavation difficulty; 4.0 fine roots throughout; 1.0 fine moderate-continuity irregular pores; 3 percent faint clay films on surfaces along pores; 1 percent fine distinct threadlike noncoherent cemented carbonate masses with clear boundaries throughout; fragments; 5 percent krotovinas (volume percent); strong effervescence, by hcl, 1n; gradual smooth boundary. Lab sample # 08N01679; dry when described; observed in trench. discontinuous - phpvsfiid 1490900; discontinuous - phpvsfiid 1490900
    Bt2—40 to 80 centimeters (15.7 to 31.5 inches); light brown (7.5YR 6/4), brown (7.5YR 4/4), moist; silt loam; 26 percent clay; moderate medium prismatic parts to moderate medium subangular blocky structure; slightly hard, friable, noncoherent, moderately sticky, moderately plastic; low excavation difficulty; 3.0 fine roots throughout; 1.0 fine moderate-continuity irregular pores; 1 percent faint clay films on surfaces along pores and 4 percent faint clay films on all faces of peds; 1 percent fine distinct irregular noncoherent cemented gypsum crystals, unspecified with clear boundaries throughout and 1 percent fine distinct threadlike noncoherent cemented carbonate masses with clear boundaries throughout; fragments; 5 percent krotovinas (volume percent); violent effervescence, by hcl, 1n; diffuse smooth boundary. Lab sample # 08N01680; dry when described; observed in trench. patchy - phpvsfiid 1490901; discontinuous - phpvsfiid 1490902; patchy - phpvsfiid 1490901; discontinuous - phpvsfiid 1490902
    Bt3—80 to 107 centimeters (31.5 to 42.1 inches); light brown (7.5YR 6/3), brown (7.5YR 5/4), moist; silt loam; 23 percent clay; moderate medium prismatic parts to moderate medium subangular blocky structure; slightly hard, friable, noncoherent, moderately sticky, moderately plastic; low excavation difficulty; 2.0 fine roots throughout; 1.0 fine moderate-continuity irregular pores; 1 percent faint clay films on surfaces along pores and 4 percent faint clay films on all faces of peds; 1 percent fine distinct irregular noncoherent cemented gypsum crystals, unspecified with clear boundaries throughout and 1 percent fine distinct threadlike noncoherent cemented carbonate masses with clear boundaries throughout; fragments; 7 percent krotovinas (volume percent); violent effervescence, by hcl, 1n; gradual smooth boundary. Lab sample # 08N01681; dry when described; observed in trench. patchy - phpvsfiid 1490903; discontinuous - phpvsfiid 1490904; patchy - phpvsfiid 1490903; discontinuous - phpvsfiid 1490904
    Bt4—107 to 149 centimeters (42.1 to 58.7 inches); light brown (7.5YR 6/4), brown (7.5YR 5/4), moist; silt loam; 23 percent clay; moderate medium prismatic parts to weak fine prismatic parts to moderate medium subangular blocky structure; slightly hard, friable, noncoherent, moderately sticky, moderately plastic; low excavation difficulty; 1.0 fine roots throughout; 1.0 fine moderate-continuity irregular pores; 2 percent faint clay films on surfaces along pores and 2 percent faint clay films on all faces of peds; 1 percent fine faint irregular noncoherent cemented gypsum crystals, unspecified with clear boundaries throughout; fragments; strong effervescence, by hcl, 1n; clear smooth boundary. Lab sample # 08N01682; dry when described; observed in trench. patchy - phpvsfiid 1490906; discontinuous - phpvsfiid 1490905; patchy - phpvsfiid 1490906; discontinuous - phpvsfiid 1490905
    Bt5—149 to 200 centimeters (58.7 to 78.7 inches); light brown (7.5YR 6/4), brown (7.5YR 5/4), moist; silt loam; 23 percent clay; moderate coarse prismatic parts to moderate medium prismatic parts to moderate medium subangular blocky structure; slightly hard, friable, noncoherent, moderately sticky, moderately plastic; low excavation difficulty; 1.0 fine roots throughout; 1.0 fine moderate-continuity irregular pores; 2 percent faint clay films on surfaces along pores and 2 percent faint clay films on all faces of peds; fragments; strong effervescence, by hcl, 1n. Lab sample # 08N01683; dry when described; observed in trench. patchy - phpvsfiid 1490908; discontinuous - phpvsfiid 1490907; patchy - phpvsfiid 1490908; discontinuous - phpvsfiid 1490907