IDENTIFIERS

  • Current Taxon Name (Soil Name): Houston Black
  • OSD
  • Series Extent
  • User Site ID: S1978TX027003
  • User Pedon ID: 78TX027003
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 78P0472
  • NCSS Pedon Lab Data NASIS Record ID - 46026
  • Print Date: 9/24/2024

    • 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: 31.0333328
  • Std. Longitude: -97.3499985
  • Datum: WGS84
  • Location Description: Bell County, TX in grain sorghum test plot in S part of Blackland Research Center
  • State: Texas
  • County: TX027—Bell

    • PEDON

  • Describers Name: Robert N. Ramsey
  • Current Taxonomic Class: Fine, smectitic, thermic Udic Pellusterts
  • Current Taxon Kind: series
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from SSL-CMS data
  • Pedon #: 3
  • Correlated Information:
  • Soil Name - Houston Black
  • Classificaton Date - 7/11/2007
  • Moisture Class - udic
  • Moisture Subclass - udic
  • Sampled As Information:
  • Soil Name - Houston Black
  • Taxonomic Class - Fine, montmorillonitic, thermic Udic Pellustert
  • Taxon Kind - series
  • Classificaton Date - 7/1/1978
  • Moisture Class - ustic
  • Moisture SUBClass - udic
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Landscape: hills
  • Landform: upland slope
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 7/1/1978 (actual site observation date)
  • Surface Cover Properties:
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
  • Site Erosion Accelerated: water erosion
    • 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

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    1Ap—0 to 18 centimeters (0.0 to 7.1 inches); very dark gray (10YR 3/1) interior, black (10YR 2/1) interior, moist; clay; moderate very fine and fine subangular blocky structure; very hard, very firm, very sticky, very plastic; 0.5 fine roots; fragments; moderately alkaline, pH 8.2, pH meter; abrupt smooth boundary. Lab sample # 78P02654. Few fine snail shell fragments. Few 1 in to 2 in wide cracks. Calcareous; few fine roots
    1A11—18 to 71 centimeters (7.1 to 28.0 inches); very dark gray (10YR 3/1) interior, black (10YR 2/1) interior, moist; clay; moderate fine and medium subangular blocky, and angular blocky structure; extremely hard, very firm, very sticky, very plastic; 0.5 fine roots; slickensides (pedogenic) on faces of peds; 1 percent fine iron-manganese concretions; fragments; moderately alkaline, pH 8.2, pH meter; gradual wavy boundary. Lab sample # 78P02655. Calcareous. Few fine snail shell fragments. Subsoil samples taken are 78P2655 018 to 048 cm and 78P2656 048 to 071 cm; few fine iron-manganese concretions concentrations; few fine roots
    1A12—71 to 112 centimeters (28.0 to 44.1 inches); dark gray (10YR 4/1) interior, very dark gray (10YR 3/1) interior, moist; clay; moderate medium and coarse angular blocky structure; extremely hard, very firm, very sticky, very plastic; 0.5 fine roots; 1 percent fine iron-manganese concretions; fragments; moderately alkaline, pH 8.2, pH meter; gradual wavy boundary. Lab sample # 78P02657. Intersecting slickensides border parallelepipeds that have long axis tiled 40 to 60 degrees from the horizontal. Few fine snail shell fragments. Subsoil samples are 78P2657 071 to 091 cm and 78P2658 091 to 112 cm; few fine iron-manganese concretions concentrations; few fine roots
    1AC—112 to 160 centimeters (44.1 to 63.0 inches); grayish brown (10YR 5/2) interior, dark grayish brown (10YR 4/2) interior, moist; clay; 1 percent fine faint mottles; weak coarse angular blocky structure; extremely hard, very firm, very sticky, very plastic; 1 percent fine iron-manganese concretions; 1 percent fine carbonate concretions; fragments; moderately alkaline, pH 8.2, pH meter. Lab sample # 78P02659. Calcareous. A few intersecting slickensides with inclined axis. Few fine streaks of dark gray. Few fine snail shell fragments. Subsoil samples taken are 78P2659 112 to 135 cm and 78P2660 135 to 160 cm; few fine iron-manganese concretions concentrations; few fine lime concretions concentrations; few fine faint mottles
    1CA1—160 to 188 centimeters (63.0 to 74.0 inches); grayish brown (10YR 5/2) interior, dark grayish brown (10YR 4/2) interior, moist; clay; 1 percent fine faint mottles; weak coarse blocky structure; extremely hard, very firm, very sticky, very plastic; 1 percent fine iron-manganese concretions; 1 percent carbonate nodules; fragments; moderately alkaline, pH 8.2, pH meter. Lab sample # 78P02661. A few intersecting slickensides with inclined axis. Few fine streaks of dark gray. Few fine snail shell fragments; very few lime nodules concentrations; few fine iron-manganese concretions concentrations; few fine faint mottles
    1CA2—188 to 213 centimeters (74.0 to 83.9 inches); 40 percent dark grayish brown (2.5Y 4/2) interior, 60 percent grayish brown (2.5Y 5/2) interior, moist; clay; 1 percent light olive brown (2.5Y 5/6) fine distinct and 30 percent dark grayish brown (2.5Y 4/2) medium distinct mottles; weak coarse subangular blocky structure; extremely hard, very firm, very sticky, very plastic; 11 percent fine magnetic shot; 1 percent carbonate nodules; fragments; gradual boundary. Lab sample # 78P02662. Strongly calcareous; very few lime nodules concentrations; common fine magnetic shot concentrations; many medium distinct 2.5Y42 mottles; few fine distinct 2.5Y56 mottles
    1C—213 to 284 centimeters (83.9 to 111.8 inches); 30 percent light olive brown (2.5Y 5/6) interior, 70 percent grayish brown (2.5Y 5/2) interior, moist; clay; 11 percent light olive brown (2.5Y 5/6) coarse distinct mottles; massive; extremely hard, very firm, very sticky, very plastic; 11 percent medium magnetic shot; 1 percent carbonate nodules; fragments. Lab sample # 78P02663. Strongly calcareous. Few krotivinas and root channels.; common medium magnetic shot concentrations; very few lime nodules concentrations; common coarse distinct 2.5Y56 mottles