IDENTIFIERS

  • Current Taxon Name (Soil Name): Grayrock
  • OSD
  • Series Extent
  • User Site ID: S1980TX449001
  • User Pedon ID: 80TX449001
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 81P0147
  • NCSS Pedon Lab Data NASIS Record ID - 48441
  • Print Date: 11/14/2025

    • 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: 33.1777763
  • Std. Longitude: -95.0833359
  • Datum: WGS84
  • Location Description: Titus County, TX: 7 mi W on farm Rd. 1734 to Entrance of Tugo .7 mi SW on haul Rd. 100 feet SE.
  • State: Texas
  • County: TX449—Titus

    • PEDON

  • Describers Name: L. Brockman, J. R. Thomas, T. Galloway, R. Fox
  • Current Taxonomic Class: Fine-silty, mixed, nonacid, thermic Typic Udorthents
  • Current Taxon Kind: series
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from SSL-CMS data
  • Pedon #: 1
  • Correlated Information:
  • Soil Name - Grayrock
  • Classificaton Date - 7/11/2007
  • Moisture Class - udic
  • Sampled As Information:
  • Soil Name - Grayrock
  • Taxonomic Class - Fine-loamy, mixed, nonacid, thermic Typic Udorthen
  • Taxon Kind - series
  • Classificaton Date - 9/1/1980
  • Moisture Class - udic
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Slope Shape Down: convex
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 9/1/1980 (actual site observation date)
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - grass/herbaceous cover
  • 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

    1

    —

    —

    140

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    1Ap—0 to 18 centimeters (0.0 to 7.1 inches); dark grayish brown (10YR 4/2) interior, grayish brown (10YR 5/2) interior, dry; silty clay loam; weak fine granular, and moderate very fine and fine subangular blocky structure; hard, very friable; 2.5 very fine and fine roots and 0.5 medium roots; 1 percent dark concretions; fragments; slightly alkaline, pH 7.6, hellige-truog; clear smooth boundary. Lab sample # 81P00738. About 2 percent by volume lignite and shale fragments 4 to 10 mm in diameter.; few dark concretions concentrations; few medium roots; common very fine and fine roots
    1C1—18 to 71 centimeters (7.1 to 28.0 inches); dark grayish brown (10YR 4/2) interior, grayish brown (10YR 5/2) interior, dry; silty clay loam; massive; hard, friable; 0.5 medium roots and 5.5 fine roots; fragments; slightly alkaline, pH 7.6, hellige-truog; clear wavy boundary. Lab sample # 81P00739. About 6 percent by volume fragments of lignite and 12 percent fragments of shale from 1 to 12 cm across; few reddish clayey spots less than 1 percent by volume. Split for sampling at 31 to 71 cm sample number 81P0740.; few medium roots; many fine roots
    1C2—71 to 94 centimeters (28.0 to 37.0 inches); olive brown (2.5Y 4/4) interior silty clay loam; massive; hard, friable; 0.5 medium roots and 5.5 fine roots; 1 percent dark concretions; fragments; neutral, pH 7.0, hellige-truog; clear wavy boundary. Lab sample # 81P00741. About 25 percent by volume fragments of lignite and less than 2 percent fragments of shale 2 to 25 cm across.; few dark concretions concentrations; few medium roots; many fine roots
    1C3—94 to 203 centimeters (37.0 to 79.9 inches); olive gray (5Y 4/2) interior silty clay loam; massive; hard, friable; 0.5 medium roots and 5.5 fine roots; 1 percent dark concretions; fragments; moderately alkaline, pH 8.2, hellige-truog. Lab sample # 81P00742. About 12 percent by volume fragments of lignite and 4 percent fragments of shale 1 to 25 cm across; split for sampling at 150 to 203 cm sample number 81P0743.; few dark concretions concentrations; few medium roots; many fine roots