IDENTIFIERS

  • Current Taxon Name (Soil Name): Zulch
  • OSD
  • Series Extent
  • User Site ID: S2002TX041004
  • User Pedon ID: S2002TX041004
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - TAMU
  • Lab Pedon # - S78TX041004
  • NCSS Pedon Lab Data NASIS Record ID - 45649
  • Print Date: 11/21/2024
  • 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: 30.6109447
  • Std. Longitude: -96.3481369
  • Datum: WGS84
  • Location Description: West campus of Texas A&M University about 250 feet northwest of Kleberg Animal and Food Science Building.
  • Map Unit: Ur—Urban land
  • Country: US—United States
  • State: Texas
  • County: TX041—Brazos
  • MLRA: 87A—Texas Claypan Area, Southern Part
  • Regional Office: SC—South Central
  • Non-MLRA Soil Survey Area: TX041—Brazos County, Texas
  • PEDON

  • Describers Name: Kyle Kacy, Terry Sobecki
  • Current Taxonomic Class: Fine, smectitic, thermic Udertic Paleustalfs
  • Current Taxon Kind: series
  • Pedon Type: classifies to current taxon name, full description
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: 2002 Brazos County Soil Survey
  • Correlated Information:
  • Soil Name - Zulch
  • PSC - 20 to 70 cm.
  • Classificaton Date - 5/21/2012
  • Moisture Class - ustic
  • Moisture Subclass - ustic
  • Sampled As Information:
  • Soil Name - Lufkin taxadjunct
  • Classificaton Date - 1/3/1979
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


  • SITE

  • Parent Material: alluvium
  • Landscape: upland
  • Runoff: very high
  • Drainage Class: poorly
  • Geology: Yegua formation.
  • Surface Fragments:
  • Benchmark Soil?: no
  • VEGETATION

    SITE OBSERVATION

  • Observation Date: 1/3/1979 (actual site observation date)
  • Air Photo ID: AS-32
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - grass/herbaceous cover
  • 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

    ochric epipedon

    argillic horizon

    abrupt textural change

    salt accumulations

    secondary carbonates

    densic materials

    0—20

    20—147

    20—20

    81—147

    81—147

    147—198

    —-

    —-

    —-

    —-

    —-

    —-

    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

    Ap—0 to 20 centimeters (0.0 to 7.9 inches); grayish brown (10YR 5/2), very dark grayish brown (10YR 3/2), moist; loam; massive; hard, friable; 5.0 fine roots; 3.0 fine pores; ; fragments; abrupt wavy boundary. Lab sample # TAMU525; observed in trench
    Bt1—20 to 41 centimeters (7.9 to 16.1 inches); grayish brown (10YR 5/2), very dark grayish brown (10YR 3/2), moist; clay; weak coarse angular blocky structure; extremely hard, firm; 3.0 fine roots; 1 percent by volume nonflat subrounded indurated chert fragments; clear wavy boundary. Lab sample # TAMU526; observed in trench
    Bt2—41 to 81 centimeters (16.1 to 31.9 inches);, dark grayish brown (2.5Y 4/2), moist; clay; moderate coarse angular blocky structure; extremely hard, firm; 3.0 fine roots; 10 percent pressure faces; 1 percent fine faint light olive brown (2.5Y 5/4), moist, masses of oxidized iron and 1 percent fine black (10YR 2/1), moist, iron-manganese concretions; 1 percent fine dark concretions; 1 percent by volume nonflat subrounded indurated chert fragments; clear wavy boundary. Lab sample # TAMU527; observed in trench
    Btk—81 to 107 centimeters (31.9 to 42.1 inches); grayish brown (2.5Y 5/2), grayish brown (2.5Y 5/2), moist; clay; weak coarse angular blocky structure; extremely hard, very firm; 10 percent pressure faces; fragments; clear smooth boundary. Lab sample # TAMU528; observed in trench
    Btkz—107 to 147 centimeters (42.1 to 57.9 inches); light gray (2.5Y 7/2), light gray (2.5Y 7/2), moist; clay loam; weak coarse prismatic parts to moderate medium angular blocky structure; very hard, firm; 1.0 fine roots; 15 percent faint clay films on all faces of peds; 2 percent fine faint brownish yellow (10YR 6/8), moist, masses of oxidized iron and 5 percent very fine black (10YR 2/1), moist, iron-manganese concretions; 10 percent salt masses; fragments; clear smooth boundary. Lab sample # TAMU529; observed in trench
    Cd1—147 to 173 centimeters (57.9 to 68.1 inches);, light brownish gray (2.5Y 6/2), moist; silty clay; hard, firm; manganese or iron-manganese stains; 1 percent fine black (10YR 2/1), moist, iron-manganese concretions; 10 percent fine dark concretions; 1 percent by volume nonflat subrounded indurated chert fragments; gradual smooth boundary. Lab sample # TAMU530; observed in trench
    Cd2—173 to 198 centimeters (68.1 to 78.0 inches);, light brownish gray (2.5Y 6/2), moist; silty clay; 2 percent brownish yellow (10YR 6/6) fine prominent mottles; extremely hard, very firm; manganese or iron-manganese stains; fragments. Lab sample # TAMU531; observed in trench