IDENTIFIERS

  • Current Taxon Name (Soil Name): Lufkin
  • OSD
  • Series Extent
  • User Site ID: S1987TX257001
  • User Pedon ID: 87TX257001
  • Vegetation Plot ID: S1987TX257001
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 88P0106
  • NCSS Pedon Lab Data NASIS Record ID - 60229
  • Print Date: 2/16/2025

    • 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: 32.5188904
  • Std. Longitude: -96.1474991
  • Datum: WGS84
  • Location Description: Kaufman County, TX; 11.7 mi E on FR 1836; .2 mi S on County Rd. 300 feet E in pasture. 200 feet SW of Cedar Hill Church.
  • State: Texas
  • County: TX257—Kaufman
  • MLRA: 87—Texas Claypan Area

    • PEDON

  • Describers Name: Stringer, Lane, Brockmann, Batte
  • Current Taxonomic Class: Fine, smectitic, thermic Vertic Albaqualfs
  • Current Taxon Kind: series
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from SSL-CMS data
  • Pedon #: 1
  • Correlated Information:
  • Soil Name - Lufkin
  • PSC - 20 to 70 cm.
  • Classificaton Date - 7/11/2007
  • Moisture Class - aquic
  • Sampled As Information:
  • Soil Name - Lufkin
  • Taxonomic Class - Fine, montmorillonitic, thermic Vertic Albaqualf
  • Taxon Kind - series
  • Classificaton Date - 7/1/1987
  • Moisture Class - aquic
  • Dynamic Soil Properties:
  • Erosion Class - 1
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Landscape: coastal plain
  • Landform: terrace—stream or lake
  • Anthropogenic Feature: leveled land
  • Geomorphic Component Hills: interfluve
  • Hill Slope Profile: summit
  • Slope Position: middle third
  • Slope Shape Down: linear
  • Runoff: very low
  • Drainage Class: somewhat poorly
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 7/1/1987 (actual site observation date)
  • Microrelief Elevation: 1
  • 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
    • Vegetation Plot Plants
    Plant Symbol Scientific Name National Vernacular Name Plant Type Group Canopy Cover % Vegetation Stata Level

    ARIST

    CROTO

    PANO2

    Aristida

    Croton

    Paspalum notatum

    threeawn

    croton

    bahiagrass

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

    ochric epipedon

    argillic horizon

    0—12

    20—185

    —-

    —-
    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

    —

    —

    120

    —

    270

    95

    —

    —

    19

    —

    —

    —

    —

    —

    —

    —

    —

    —

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    1A—0 to 12 centimeters (0.0 to 4.7 inches); brown (10YR 4/3) interior, very pale brown (10YR 7/3) interior, dry; silt loam; moderate fine subangular blocky, and moderate medium subangular blocky structure; hard, very friable; 2.5 medium roots throughout and 2.5 fine roots; 0.5 fine tubular pores; fragments; clear smooth boundary. Lab sample # 88P00611. common fine roots; common medium roots throughout
    1E—12 to 20 centimeters (4.7 to 7.9 inches); grayish brown (10YR 5/2) interior, light gray (10YR 7/2) interior, dry; silt loam; hard, very friable; 2.5 fine roots throughout; 0.5 fine tubular pores; fragments; abrupt smooth boundary. Lab sample # 88P00612. common fine roots throughout
    1Btg1—20 to 40 centimeters (7.9 to 15.7 inches); dark grayish brown (10YR 4/2) interior clay; 1 percent yellowish brown (10YR 5/4) fine prominent mottles; moderate coarse prismatic, and moderate medium prismatic, and moderate coarse angular blocky structure; extremely hard, very firm; 2.5 fine roots between peds; 37 percent faint , moist, clay films on all faces of peds; fragments; gradual smooth boundary. Lab sample # 88P00613. Cracking along prism faces.; common clay films surface features on vertical and horizontal faces of peds; common fine roots between peds; few fine prominent 10YR54 mottles; discontinuous - phpvsfiid 222694; discontinuous - phpvsfiid 222694
    1Btg2—40 to 70 centimeters (15.7 to 27.6 inches); dark grayish brown (10YR 4/2) interior clay; moderate coarse prismatic, and moderate medium prismatic, and moderate coarse angular blocky structure; extremely hard, very firm; 0.5 fine roots throughout and 2.5 fine roots between peds; 37 percent faint , moist, clay films on all faces of peds; 1 percent fine spherical dark concretions; fragments; gradual smooth boundary. Lab sample # 88P00614. Cracking along prism faces.; few fine dark concretions concentrations; common clay films surface features on vertical and horizontal faces of peds; common fine roots between peds; few fine roots throughout; discontinuous - phpvsfiid 222695; discontinuous - phpvsfiid 222695
    1Btg3—70 to 90 centimeters (27.6 to 35.4 inches); dark grayish brown (2.5Y 4/2) interior clay; 1 percent grayish brown (2.5Y 5/2) fine faint and 1 percent grayish brown (2.5Y 5/2) medium faint mottles; weak medium prismatic, and moderate medium angular blocky, and moderate fine angular blocky structure; very hard, firm; 0.5 fine roots throughout; 15 percent , moist, pressure faces and 37 percent faint , moist, clay films on vertical faces of peds; 1 percent fine spherical dark concretions; fragments; gradual smooth boundary. Lab sample # 88P00615. few fine dark concretions concentrations; common clay films surface features on vertical faces of peds; few pressure faces surface features; few fine roots throughout; few fine faint 2.5Y52 mottles; few medium faint 2.5Y52 mottles; discontinuous - phpvsfiid 222696; discontinuous - phpvsfiid 222696
    1Btg4—90 to 107 centimeters (35.4 to 42.1 inches); dark grayish brown (2.5Y 4/2) interior clay loam; 1 percent red (2.5YR 4/8) medium prominent and 11 percent yellowish brown (10YR 5/8) medium distinct and 11 percent grayish brown (2.5Y 5/2) medium faint mottles; weak medium prismatic, and moderate medium angular blocky, and moderate fine angular blocky structure; very hard, firm; 0.5 fine roots throughout; 15 percent , moist, organic stains on vertical faces of peds and 15 percent , moist, clay films and 37 percent faint , moist, clay films on vertical faces of peds; 1 percent medium spherical dark concretions; fragments; gradual smooth boundary. Lab sample # 88P00616. few medium dark concretions concentrations; common clay films surface features on vertical faces of peds; few organic coats surface features on vertical faces of peds; few clay films surface features; few fine roots throughout; common medium faint 2.5Y52 mottles; few medium prominent 2.5YR48 mottles; common medium distinct 10YR58 mottles; patchy - phpvsfiid 222699; discontinuous - phpvsfiid 222698; patchy - phpvsfiid 222699; discontinuous - phpvsfiid 222698
    1Btg5—107 to 127 centimeters (42.1 to 50.0 inches); dark grayish brown (2.5Y 4/2) interior clay loam; 11 percent red (2.5YR 4/8) fine distinct and 11 percent reddish yellow (7.5YR 6/8) fine distinct and 30 percent grayish brown (2.5Y 5/2) coarse faint mottles; weak medium prismatic, and moderate medium angular blocky, and moderate fine angular blocky structure; very hard, firm; 0.5 fine roots throughout; 15 percent , moist, organic stains on vertical faces of peds and 15 percent , moist, pressure faces and 37 percent faint , moist, clay films on vertical faces of peds; 1 percent medium spherical dark concretions; 1 percent fine spherical barite masses; fragments; gradual smooth boundary. Lab sample # 88P00617. few fine soft masses of barite concentrations; few medium dark concretions concentrations; common clay films surface features on vertical faces of peds; few organic coats surface features on vertical faces of peds; few pressure faces surface features; few fine roots throughout; many coarse faint 2.5Y52 mottles; common fine distinct 2.5YR48 mottles; common fine distinct 7.5YR68 mottles; patchy - phpvsfiid 222702; discontinuous - phpvsfiid 222701; patchy - phpvsfiid 222702; discontinuous - phpvsfiid 222701
    1Btg6—127 to 160 centimeters (50.0 to 63.0 inches); light brownish gray (2.5Y 6/2) interior clay loam; 11 percent brownish yellow (10YR 6/8) fine distinct and 11 percent brownish yellow (10YR 6/8) medium distinct mottles; weak medium prismatic, and moderate medium angular blocky, and moderate fine angular blocky structure; very hard, firm; 0.5 fine roots throughout; 15 percent faint , moist, clay films on vertical faces of peds and 15 percent , moist, organic stains on vertical faces of peds; 1 percent medium spherical dark concretions; 1 percent fine spherical barite masses; fragments; gradual smooth boundary. Lab sample # 88P00618. few fine soft masses of barite concentrations; few medium dark concretions concentrations; few clay films surface features on vertical faces of peds; few organic coats surface features on vertical faces of peds; few fine roots throughout; common fine distinct 10YR68 mottles; common medium distinct 10YR68 mottles; patchy - phpvsfiid 222704; patchy - phpvsfiid 222705; patchy - phpvsfiid 222704; patchy - phpvsfiid 222705
    1Btg7—160 to 185 centimeters (63.0 to 72.8 inches); light gray (2.5Y 7/2) interior clay loam; 11 percent brownish yellow (10YR 6/8) fine distinct and 11 percent brownish yellow (10YR 6/8) medium distinct mottles; weak medium prismatic, and moderate medium angular blocky, and moderate fine angular blocky structure; very hard, firm; 0.5 fine roots throughout; 15 percent faint , moist, clay films on vertical faces of peds and 15 percent , moist, organic stains on vertical faces of peds; 1 percent medium spherical dark concretions; 1 percent fine spherical barite masses; fragments; gradual smooth boundary. Lab sample # 88P00619. few fine soft masses of barite concentrations; few medium dark concretions concentrations; few clay films surface features on vertical faces of peds; few organic coats surface features on vertical faces of peds; few fine roots throughout; common fine distinct 10YR68 mottles; common medium distinct 10YR68 mottles; patchy - phpvsfiid 222706; patchy - phpvsfiid 222707; patchy - phpvsfiid 222706; patchy - phpvsfiid 222707
    1BC—185 to 213 centimeters (72.8 to 83.9 inches); light gray (2.5Y 7/2) interior sandy clay loam; 11 percent brownish yellow (10YR 6/8) medium distinct and 30 percent brownish yellow (10YR 6/8) fine distinct mottles; weak medium prismatic, and weak medium angular blocky structure; very hard, firm; 2 percent faint , moist, clay films on vertical faces of peds; 1 percent fine spherical barite masses; fragments. Lab sample # 88P00620. few fine soft masses of barite concentrations; very few clay films surface features on vertical faces of peds; many fine distinct 10YR68 mottles; common medium distinct 10YR68 mottles; patchy - phpvsfiid 222708; patchy - phpvsfiid 222708