IDENTIFIERS

  • Current Taxon Name (Soil Name): Ligon
  • OSD
  • Series Extent
  • User Site ID: S1986TX299004
  • User Pedon ID: S1986TX299004
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 86P0297
  • NCSS Pedon Lab Data NASIS Record ID - 58102
  • Print Date: 12/9/2025

    • 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: 30.6816667
  • Std. Longitude: -98.8583333
  • Datum: WGS84
  • Location Description: From TX-16 & FM-2323 18.7 km SW on 2323, 4.8 km N on County Rd, 2.1 km N on ranch road, 18.3 meters W in rangeland.
  • State: Texas
  • County: TX299—Llano
  • MLRA: 82—Texas Central Basin

    • PEDON

  • Describers Name: Coburn,Finnell,Lane,Williams,Berdanier, Allison
  • Current Taxonomic Class: Fine, mixed, thermic Typic Rhodustalfs
  • Current Taxon Kind: series
  • Pedon Type: TUD pedon
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from SSL-CMS data
  • Pedon #: 4
  • Correlated Information:
  • Soil Name - Ligon (flagged as OSD)
  • PSC - 10 to 58 cm.
  • Classificaton Date - 7/11/2007
  • Soil Taxonomic Edition - twelfth edition
  • Moisture Class - ustic
  • Moisture Subclass - typic
  • Sampled As Information:
  • Soil Name - Ligon
  • Taxonomic Class - Loamy, mixed, thermic Udic Rhodustalf
  • Taxon Kind - series
  • Classificaton Date - 3/1/1986
  • Moisture Class - ustic
  • Moisture SUBClass - udic
  • Dynamic Soil Properties:
  • Erosion Class - 0
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: residuum weathered from gneiss and/or residuum weathered from schist
  • Landscape: hills
  • Landform: hillside or mountainside
  • Geomorphic Component Hills: side slope
  • Hill Slope Profile: footslope
  • Slope Shape Down: convex
  • Runoff: medium
  • Drainage Class: well
  • Surface Fragments: 0.05 percent
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 3/1/1986 (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
    • Pedon Restrictions
    Kind Hardness Restriction Depth L-H Restriction Thickness L-RV-H
    cm

    densic material

    bedrock, paralithic

    —

    —

    58 - 81

    81 -

    - 23 -

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

    ochric epipedon

    argillic horizon

    densic materials

    paralithic contact

    0—10

    10—58

    58—81

    81—

    —10—

    —48—

    —23—

    —-
    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

    —

    —

    375

    —

    0

    66

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    415272

    —
    A—0 to 10 centimeters (0.0 to 3.9 inches); reddish brown (5YR 4/4) interior, dark reddish brown (5YR 3/4) interior, moist; sandy clay loam; weak fine subangular blocky parts to moderate very fine granular structure; hard, friable; many (5.5) very fine roots throughout and many (5.5) fine roots throughout; many very fine tubular and many fine tubular pores; 10 percent by volume nonflat subangular indurated 2-39-75 millimeter quartz fragments; slightly acid, pH 6.3, hellige-truog; abrupt smooth boundary. Lab sample # 86P01749. many fine roots throughout; many very fine roots throughout
    Bt1—10 to 18 centimeters (3.9 to 7.1 inches); reddish brown (2.5YR 4/4) interior, dark reddish brown (2.5YR 3/4) interior, moist; clay; moderate fine subangular blocky structure; very hard, firm; few (0.5) medium roots between peds and common (2.5) fine roots between peds; 20 percent dark reddish brown (2.5YR 3/4) clay films on faces of peds; 15 percent by volume nonflat subangular indurated 75-162-250 millimeter quartz fragments; slightly acid, pH 6.3, hellige-truog; clear smooth boundary. Lab sample # 86P01750. few clay films surface features on faces of peds; common fine roots between peds; few medium roots between peds; patchy - phpvsfiid 1721697; patchy - phpvsfiid 1721697
    Bt2—18 to 46 centimeters (7.1 to 18.1 inches); red (2.5YR 4/6) interior, dark red (2.5YR 3/6) interior, moist; clay; weak medium prismatic parts to moderate medium subangular blocky structure; very hard, firm; few (0.5) very fine roots throughout and few (0.5) fine roots between peds; 20 percent dark red (2.5YR 3/6) clay films on faces of peds; fragments; neutral, pH 7.0, hellige-truog; gradual smooth boundary. Lab sample # 86P01751. common clay films surface features on faces of peds; few fine roots between peds; few very fine roots throughout; discontinuous - phpvsfiid 1721698; discontinuous - phpvsfiid 1721698
    Bt3—46 to 58 centimeters (18.1 to 22.8 inches); red (2.5YR 4/6) interior and reddish brown (5YR 4/4) interior, dark red (2.5YR 3/6) interior and dark reddish brown (5YR 3/4) interior, moist; paracobbly sandy clay loam; weak medium prismatic parts to weak medium subangular blocky structure; hard, firm; few (0.5) medium roots between peds and few (0.5) fine roots between peds; 10 percent dark red (2.5YR 3/6) clay films on faces of peds; 3 percent by volume nonflat subrounded indurated 2-39-75 millimeter quartz fragments and 10 percent by volume nonflat subangular weakly coherent cemented 2-40-75 millimeter schist, unspecified fragments and 10 percent by volume nonflat subangular weakly coherent cemented 75-100-250 millimeter schist, unspecified fragments; neutral, pH 7.0, hellige-truog; gradual wavy boundary. Lab sample # 86P01752. few fine roots between peds; few medium roots between peds; discontinuous - phpvsfiid 1721699; discontinuous - phpvsfiid 1721699
    Cd—58 to 81 centimeters (22.8 to 31.9 inches); few (0.5) very fine roots in cracks and few (0.5) fine roots in cracks; fragments; neutral, pH 7.0; abrupt smooth boundary. Lab sample # 86P01753. weathered schist; few fine roots in cracks; few very fine roots in cracks
    Cr—81 to 130 centimeters (31.9 to 51.2 inches); 0.5 fine roots in cracks; fragments. Lab sample # 86P01754. tilted weakly cemented schist bedrock; few fine roots in cracks