IDENTIFIERS

  • Current Taxon Name (Soil Name): Houston Black
  • OSD
  • Series Extent
  • User Site ID: S78TX145002
  • User Pedon ID: S78TX145002
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - TAMU
  • Lab Pedon # - S78TX145002
  • NCSS Pedon Lab Data NASIS Record ID - 45651
  • Print Date: 1/31/2025

    • 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: 31.0733337
  • Std. Longitude: -97.0846100
  • Datum: WGS84
  • Location Description: From Barclay, 1.6 miles east on Texas Highway 53, 200 feet north of road in field.
  • Map Unit: 35—Houston Black clay, 1 to 3 percent slopes
  • Country: US—United States
  • State: Texas
  • County: TX145—Falls
  • MLRA: 86A—Texas Blackland Prairie, Northern Part
  • Regional Office: SC—South Central
  • Non-MLRA Soil Survey Area: TX145—Falls County, Texas

    • PEDON

  • Describers Name: L.Wilding,E.Rivers,B.Ramsey
  • Current Taxonomic Class: Fine, smectitic, thermic Udic Haplusterts
  • Current Taxon Kind: series
  • Pedon Type: classifies to current taxon name, full description
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: PedonPC
  • Correlated Information:
  • Soil Name - Houston Black
  • PSC - 25 to 100 cm.
  • Classificaton Date - 6/4/2012
  • Sampled As Information:
  • Soil Name - Houston Black
  • Classificaton Date - 10/13/1978
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no
  • Certification Status: certified
  • QC Status: level 1
  • QA Status: level 1


    • SITE

  • Parent Material: marl
  • Landscape: upland
  • Runoff: very high
  • Drainage Class: moderately well
  • Bedrock: shale, calcareous at 292cm
  • Geology: Upper Taylor Marl group .
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 10/13/1978 (actual site observation date)
  • Air Photo ID:
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - crop cover
  • Site Obs. Cover Kind 2 - row crop
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
  • Yield Study ID -
    • Pedon Restrictions
    Kind Hardness Restriction Depth L-H Restriction Thickness L-RV-H
    cm

    densic material

    —

    292 - 457

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

    mollic epipedon

    secondary carbonates

    slickensides

    salt accumulations

    calcic horizon

    0—64

    64—292

    64—221

    64—457

    221—292

    —-

    —-

    —-

    —-

    —-
    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

    2

    —

    —

    152

    —

    68

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    Ap—0 to 15 centimeters (0.0 to 5.9 inches); very dark gray (10YR 3/1), black (10YR 2/1), moist; clay; weak fine granular, and weak fine subangular blocky structure; very hard, very firm; 1.0 fine roots; 1 percent by volume shell fragments fragments and 1 percent by volume nonflat subrounded indurated chert fragments; slight effervescence; moderately alkaline, pH 8.0; abrupt smooth boundary. Lab sample # TAMU473
    A—15 to 64 centimeters (5.9 to 25.2 inches); very dark gray (10YR 3/1), black (10YR 2/1), moist; clay; moderate fine angular blocky structure; extremely hard, very firm; 1.0 fine roots; 1 percent fine black (10YR 2/1), moist, iron-manganese concretions; 1 percent by volume shell fragments fragments and 1 percent by volume nonflat subrounded indurated chert fragments; slight effervescence; moderately alkaline, pH 8.0; gradual wavy boundary. Lab sample # TAMU476, TAMU477
    Bss1—64 to 112 centimeters (25.2 to 44.1 inches); very dark gray (10YR 3/1), black (10YR 2/1), moist; clay; moderate fine and medium angular blocky structure; extremely hard, very firm; 1.0 fine roots; 15 percent slickensides (pedogenic); 1 percent fine black (10YR 2/1), moist, iron-manganese concretions; 1 percent worm casts and 1 percent fine carbonate concretions and 1 percent fine threadlike salt masses; 1 percent by volume shell fragments fragments; strong effervescence; moderately alkaline, pH 8.0; gradual wavy boundary. Lab sample # TAMU478, TAMU479
    Bss2—112 to 152 centimeters (44.1 to 59.8 inches); dark gray (10YR 4/1), very dark gray (10YR 3/1), moist; clay; weak fine and medium angular blocky structure; extremely hard, very firm; 1.0 fine roots; 20 percent slickensides (pedogenic); 1 percent fine black (10YR 2/1), moist, iron-manganese concretions; 1 percent worm casts and 1 percent fine carbonate concretions and 5 percent fine threadlike salt masses; 1 percent by volume shell fragments fragments; strong effervescence; moderately alkaline, pH 8.0; gradual wavy boundary. Lab sample # TAMU480, TAMU481
    Bss3—152 to 178 centimeters (59.8 to 70.1 inches); grayish brown (10YR 5/2), dark grayish brown (10YR 4/2), moist; clay; weak medium angular blocky structure; extremely hard, very firm; 1.0 fine roots; 20 percent slickensides (pedogenic); 1 percent fine faint brownish yellow (10YR 6/6), moist, masses of oxidized iron and 1 percent fine black (10YR 2/1), moist, iron-manganese concretions; 1 percent fine carbonate concretions and 20 percent fine threadlike salt masses; fragments; strong effervescence; moderately alkaline, pH 8.0; gradual wavy boundary. Lab sample # TAMU484
    Bss4—178 to 221 centimeters (70.1 to 87.0 inches);, light brownish gray (10YR 6/2), moist; clay; weak medium angular blocky structure; extremely hard, very firm; 15 percent slickensides (pedogenic); 1 percent fine black (10YR 2/1), moist, iron-manganese concretions and 20 percent distinct brownish yellow (10YR 6/6), moist, masses of oxidized iron; 1 percent fine carbonate concretions and 2 percent fine threadlike salt masses; 1 percent by volume nonflat subrounded indurated chert fragments; strong effervescence; moderately alkaline, pH 8.0; gradual wavy boundary. Lab sample # TAMU485
    BCk—221 to 292 centimeters (87.0 to 115.0 inches);, light brownish gray (10YR 6/2), moist; clay; weak medium and coarse angular blocky structure; extremely hard, extremely firm; 15 percent slickensides (pedogenic); 1 percent fine black (10YR 2/1), moist, iron-manganese concretions and 20 percent distinct brownish yellow (10YR 6/6), moist, masses of oxidized iron; 1 percent fine carbonate concretions and 1 percent fine threadlike salt masses; fragments; strong effervescence; moderately alkaline, pH 8.0; gradual wavy boundary. Lab sample # TAMU486
    Cd—292 to 457 centimeters (115.0 to 179.9 inches);, brownish yellow (10YR 6/8), moist; clay; massive; extremely hard, extremely firm; 15 percent slickensides (pedogenic); 1 percent fine threadlike salt masses; fragments; strong effervescence; moderately alkaline, pH 8.0. Lab sample # TAMU489, TAMU490