IDENTIFIERS

  • Current Taxon Name (Soil Name): Tunica
  • OSD
  • Series Extent
  • User Site ID: S1961TN045010
  • User Pedon ID: S1961TN045010
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 40A5026
  • NCSS Pedon Lab Data NASIS Record ID - 41715
  • Print Date: 4/27/2025

    • LOCATION

  • Location Description: On Midway road 80 feet west of Obion River bridge at driveway - north by house site on field road 0.4 mile to drainage ditch - on field road along drainage ditch 0.1 mile - south of field road 15 feet to sample site.
  • State: Tennessee
  • County: TN045—Dyer
  • Non-MLRA Soil Survey Area: TN045—Dyer County, Tennessee

    • PEDON

  • Describers Name: W. T. Brown
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from PDP 3.x
  • Pedon #: 10
  • Sampled As Information:
  • Soil Name - Tunica
  • Classificaton Date - 10/17/1961
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Landform: flood plain
  • Microfeature: gilgai
  • Runoff: very low
  • Drainage Class: somewhat poorly
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 10/17/1961 (actual site observation date)
  • Air Photo ID: ADN-3R154
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - crop cover
  • Site Obs. Cover Kind 2 - close-grown crop
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
    • 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

    0

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    Ap—0 to 13 centimeters (0.0 to 5.1 inches); very dark grayish brown (10YR 3/2) silty clay; moderate fine granular structure; friable; 3.0 fine and medium roots; fragments; abrupt smooth boundary. Lab sample # 40A37980. lower two inches is massive firm plow pan.
    AP—8 to 13 centimeters (3.1 to 5.1 inches); fragments. Lab sample # 40A37989
    B21—13 to 48 centimeters (5.1 to 18.9 inches); dark gray (5Y 4/1) silty clay; 3 percent brown (10YR 4/3) medium faint mottles; strong coarse prismatic parts to moderate medium subangular blocky structure; firm; 3.0 fine and medium roots; clay films on vertical faces of peds and 30 percent coats; fragments; clear smooth boundary. Lab sample # 40A37981. common coatings, possibly clay films, on vertical ped faces; common crayfish holes two inches in diameter.
    B22—48 to 63 centimeters (18.9 to 24.8 inches); gray (5Y 5/1) silty clay; 3 percent brown (10YR 4/3) fine distinct and 3 percent gray (N 5/0) fine distinct mottles; moderate coarse prismatic parts to moderate medium subangular blocky structure; firm; 3.0 fine roots; 3.0 fine pores; clay films on vertical faces of peds and 30 percent coats; fragments; abrupt smooth boundary. Lab sample # 40A37982. common coatings, possibly clay films, on vertical ped faces; common crayfish holes two inches in diameter.
    Du1—63 to 81 centimeters (24.8 to 31.9 inches); dark grayish brown (10YR 4/2) fine sandy loam; 1 percent yellowish brown (10YR 5/4) medium faint mottles; massive; friable; 3.0 fine roots; fragments; abrupt smooth boundary. Lab sample # 40A37983. one bulb-shaped crayfish bed three inches in diameter.
    Du2—81 to 112 centimeters (31.9 to 44.1 inches); yellowish brown (10YR 5/4) and gray (N 5/0) fine sandy loam; massive; friable; fragments; slight effervescence, by hcl, 1n; abrupt smooth boundary. Lab sample # 40A37984. 1/2-inc gray clay layer at 38 inches.
    Du3—112 to 117 centimeters (44.1 to 46.1 inches); dark gray (N 4/0) and gray (N 5/0) clay; 1 percent yellowish brown (10YR 5/4) fine distinct mottles; massive; firm; 3 percent iron-manganese concretions; fragments; slight effervescence, by hcl, 1n; abrupt smooth boundary. Lab sample # 40A37985
    Du4—117 to 132 centimeters (46.1 to 52.0 inches); gray (N 6/0) silt loam; 21 percent dark yellowish brown (10YR 4/4) coarse distinct and 21 percent black (N 2/0) coarse distinct mottles; massive; friable; fragments; slight effervescence, by hcl, 1n; abrupt smooth boundary. Lab sample # 40A37986
    Du5—132 to 140 centimeters (52.0 to 55.1 inches); gray (N 5/0) and dark gray (N 4/0) clay; massive; firm; 21.0 fine pores; 21 percent iron-manganese concretions; fragments; violent effervescence, by hcl, 3n; abrupt smooth boundary. Lab sample # 40A37987
    Du6—140 to 165 centimeters (55.1 to 65.0 inches); gray (10YR 5/1) silty clay; 3 percent black (N 2/0) coarse distinct and 3 percent reddish brown (5YR 4/4) coarse distinct mottles; massive; firm; 0.5 medium roots; 0.5 fine pores; 3 percent iron-manganese concretions; fragments; slight effervescence, by hcl, 1n. Lab sample # 40A37988