IDENTIFIERS

  • Current Taxon Name (Soil Name): BONHAM
  • OSD
  • Series Extent
  • User Site ID: S1962TX147001
  • User Pedon ID: S1962TX147001
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 40A4505
  • NCSS Pedon Lab Data NASIS Record ID - 40657
  • Print Date: 4/7/2025

    • 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: 33.4166679
  • Std. Longitude: -96.3333359
  • Datum: WGS84
  • Location Description: West 1.9 miles of intersection of State Highway 121 and US 82 in Bonham, Texas, on Highway 82; north 0.7 mile on county road; 74 yards east and 24 yards south of gate to native pasture.
  • State: Texas
  • County: TX147—Fannin
  • MLRA: 133B—Western Coastal Plain
  • Non-MLRA Soil Survey Area: TX147—Fannin County, Texas

    • PEDON

  • Describers Name: M. Stout
  • Current Taxonomic Class: Fine, montmorillonitic, thermic Aquic Argiudolls
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from PDP 3.x
  • Pedon #: 1
  • Correlated Information:
  • Soil Name - BONHAM
  • PSC - 43 to 93 cm.
  • Classificaton Date - 7/16/2007
  • Moisture Class - udic
  • Sampled As Information:
  • Soil Name - Bonham
  • Classificaton Date - 9/10/1962
  • 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: 9/10/1962 (actual site observation date)
  • Surface Cover Properties:
  • 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

    1

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    A1—0 to 25 centimeters (0.0 to 9.8 inches); dark gray (10YR 4/1) and very dark brown (10YR 2/2) silt loam, clay loam; weak fine and medium granular structure; hard when dry, friable, slightly sticky, moderately plastic; 21.0 roots; 3 percent worm casts; fragments; moderately acid, pH 6.0, hellige-truog; clear wavy boundary. Lab sample # 40A34436. Boundary has an amplitude of 2 to 3 inches.
    B1—25 to 43 centimeters (9.8 to 16.9 inches); dark grayish brown (10YR 4/2) and very dark grayish brown (10YR 3/2) silty clay loam, clay loam; 3 percent 2.5Y 6/ (2.5Y 6/ fine faint mottles; moderate fine and medium subangular blocky structure; very hard, firm, moderately plastic; 3.0 fine pores; dark grayish brown (10YR 4/2), moist, clay films; fragments; strongly acid, pH 5.5, hellige-truog; gradual smooth boundary. Lab sample # 40A34437. continuous - phpvsfiid 190432; continuous - phpvsfiid 190432
    B21T—43 to 71 centimeters (16.9 to 28.0 inches); grayish brown (2.5Y 5/2) and dark grayish brown (2.5Y 4/2) silty clay loam, clay; 21 percent reddish brown (5YR 5/3) medium distinct and 21 percent brown (10YR 5/3) medium distinct mottles; moderate medium subangular blocky structure; extremely hard, extremely firm; 3.0 fine pores; distinct clay films and 30 percent clay films between sand grains; fragments; strongly acid, pH 5.5, hellige-truog; gradual smooth boundary. Lab sample # 40A34438. continuous - phpvsfiid 190433; continuous - phpvsfiid 190433
    B22T—71 to 99 centimeters (28.0 to 39.0 inches); yellowish brown (10YR 5/6) and reddish yellow (7.5YR 7/6) silty clay loam, clay; extremely hard, very firm; 3.0 fine pores; clay films; fragments; strongly acid, pH 5.5, hellige-truog; diffuse boundary. Lab sample # 40A34439
    B23T—99 to 142 centimeters (39.0 to 55.9 inches); light brownish gray (2.5Y 6/2) and light olive brown (2.5Y 5/4) silty clay loam, clay; 3 percent olive yellow (2.5Y 6/6) medium distinct and 3 percent yellowish brown (10YR 5/4) medium distinct mottles; moderate fine and medium subangular blocky structure; extremely hard, very firm; distinct clay films; 1 percent fine iron-manganese concretions; fragments; strongly acid, pH 5.5, hellige-truog; gradual smooth boundary. Lab sample # 40A34440. continuous - phpvsfiid 198104; continuous - phpvsfiid 198104
    B24T—142 to 168 centimeters (55.9 to 66.1 inches); pale yellow (2.5Y 7/3) and light olive brown (2.5Y 5/3) silty clay, clay; 3 percent yellow (2.5Y 8/6) fine faint and 3 percent pale yellow (2.5Y 8/3) fine faint mottles; moderate fine and medium subangular blocky structure; extremely hard, very firm; on faces of peds; 30 percent black (10YR 2/1) iron-manganese concretions; fragments; clear smooth boundary. Lab sample # 40A34441
    C1—168 to 190 centimeters (66.1 to 74.8 inches); pale yellow (2.5Y 7/3) and light olive brown (2.5Y 5/3) silty clay loam, clay; yellow (2.5Y 8/6) medium distinct and pale yellow (2.5Y 8/3) medium distinct mottles; extremely hard, very firm; fragments; noneffervescent; clear smooth boundary. Lab sample # 40A34442
    C2CA—190 to 236 centimeters (74.8 to 92.9 inches); light gray (10YR 7/2) and light brownish gray (10YR 6/2) silty clay, clay; 21 percent 2.5YR 6/ (2.5YR 6/ medium distinct mottles; strong fine and medium subangular blocky structure; extremely hard, very firm; fragments; strong effervescence; clear smooth boundary. Lab sample # 40A34443
    C3—236 to 389 centimeters (92.9 to 153.1 inches); olive yellow (2.5Y 6/6) and pale yellow (2.5Y 8/3) clay, sandy loam; weakly coherent; fragments. Lab sample # 40A34444