IDENTIFIERS

  • Current Taxon Name (Soil Name): Houston Black
  • OSD
  • Series Extent
  • User Site ID: S80TX145001
  • User Pedon ID: S80TX145001
  • Vegetation Plot ID: S80TX145001
  • Lab Information:
  • Certified Lab Pedon Description - yes
  • Lab Source ID - TAMU
  • Lab Pedon # - S80TX145001
  • NCSS Pedon Lab Data NASIS Record ID - 45659
  • Print Date: 12/17/2024

    • 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: 31.0075836
  • Std. Longitude: -97.0543900
  • Datum: WGS84
  • Location Description: Elmer Hoelscher Farm; from Wilson, 1 mile southwest on gravel road, 300 feet north 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: Wilding, West, Rivers and Ramsey
  • Current Taxonomic Class: Fine, smectitic, thermic Udic Haplusterts
  • Current Taxon Kind: series
  • Pedon Type: classifies to current taxon name, full description
  • Pedon Purpose: research site
  • Pedon Record Orgin: PedonPC
  • Correlated Information:
  • Soil Name - Houston Black
  • Classificaton Date - 5/1/2014
  • Classifier - Chance M. Robinson
  • Soil Taxonomic Edition - eleventh edition
  • Moisture Subclass - udic
  • Sampled As Information:
  • Soil Name - Houston Black
  • Classificaton Date - 7/16/1980
  • 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 297cm
  • Geology: Upper Taylor Marl group .
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 7/16/1980 (actual site observation date)
  • Microrelief Kind: microlow
  • 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
    • Vegetation Plot Plants
    Plant Symbol Scientific Name National Vernacular Name Plant Type Group Canopy Cover % Vegetation Stata Level

    GOSSY

    Gossypium

    cotton

    —

    —

    —
    Pedon Restrictions
    Kind Hardness Restriction Depth L-H Restriction Thickness L-RV-H
    cm

    densic material

    noncoherent

    297 - 434

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

    mollic epipedon

    free carbonates

    cambic horizon

    slickensides

    salt accumulations

    secondary carbonates

    densic materials

    0—104

    0—434

    104—297

    124—191

    142—434

    191—434

    297—434

    —-

    —-

    —-

    —-

    —-

    —-

    —-
    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

    —

    —

    138

    —

    70

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    Ap—0 to 13 centimeters (0.0 to 5.1 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; 3.0 fine roots; 1 percent by volume shell fragments fragments and 1 percent by volume chert fragments; slight effervescence; moderately alkaline, pH 8.0; abrupt smooth boundary. Lab sample # TAMU804
    A—13 to 79 centimeters (5.1 to 31.1 inches); very dark gray (10YR 3/1), black (10YR 2/1), moist; clay; moderate fine angular blocky structure; extremely hard, very firm; 0.9 fine roots; 2 percent slickensides (pedogenic); 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 # TAMU805, TAMU806
    Bw—79 to 124 centimeters (31.1 to 48.8 inches); very dark gray (10YR 3/1), black (10YR 2/1), moist; clay; moderate fine and medium angular blocky structure; extremely hard, very firm; 0.9 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; 1 percent by volume shell fragments fragments and 1 percent by volume nonflat subrounded indurated chert fragments; strong effervescence; moderately alkaline, pH 8.0; gradual wavy boundary. Lab sample # TAMU807, TAMU808
    Bss—124 to 142 centimeters (48.8 to 55.9 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; 0.9 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; 1 percent by volume shell fragments fragments and 1 percent by volume nonflat subrounded indurated chert fragments; strong effervescence; moderately alkaline, pH 8.0; gradual wavy boundary. Lab sample # TAMU809
    Bssz1—142 to 168 centimeters (55.9 to 66.1 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; 0.9 fine roots; 15 percent slickensides (pedogenic); 1 percent fine black (10YR 2/1), moist, iron-manganese concretions; 5 percent salt crystals and 5 percent threadlike salt masses; 1 percent by volume shell fragments fragments and 1 percent by volume nonflat subrounded indurated chert fragments; strong effervescence; moderately alkaline, pH 8.0; gradual wavy boundary. Lab sample # TAMU810
    Bssz2—168 to 191 centimeters (66.1 to 75.2 inches); dark grayish brown (2.5Y 4/2), very dark grayish brown (2.5Y 3/2), moist; clay; weak medium angular blocky structure; extremely hard, very firm; 0.9 fine roots; 15 percent slickensides (pedogenic); 1 percent fine black (10YR 2/1), moist, iron-manganese concretions; 10 percent salt crystals and 10 percent threadlike salt masses; 1 percent by volume shell fragments fragments and 1 percent by volume nonflat subrounded indurated chert fragments; strong effervescence; moderately alkaline, pH 8.0; gradual wavy boundary. Lab sample # TAMU811
    BCkz1—191 to 213 centimeters (75.2 to 83.9 inches); grayish brown (2.5Y 5/2), dark grayish brown (2.5Y 4/2), moist; clay; weak medium angular blocky structure; extremely hard, very firm; 15 percent slickensides (pedogenic); 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 salt crystals and 1 percent threadlike salt masses and 1 percent fine carbonate concretions; 1 percent by volume shell fragments fragments and 1 percent by volume nonflat subrounded indurated chert fragments; strong effervescence; moderately alkaline, pH 8.0; gradual wavy boundary. Lab sample # TAMU812
    BCkz2—213 to 234 centimeters (83.9 to 92.1 inches); black (2.5Y 6/4), light olive brown (2.5Y 5/4), moist; clay; weak medium angular blocky structure; extremely hard, very firm; 15 percent slickensides (pedogenic); 1 percent fine faint olive yellow (2.5Y 6/6), moist, masses of oxidized iron and 1 percent fine black (10YR 2/1), moist, iron-manganese concretions; 1 percent salt crystals and 1 percent threadlike salt masses and 1 percent fine carbonate concretions and 1 percent medium carbonate masses; 1 percent by volume shell fragments fragments and 1 percent by volume nonflat subrounded indurated chert fragments; strong effervescence; moderately alkaline, pH 8.0; gradual wavy boundary. Lab sample # TAMU813
    Ck—234 to 297 centimeters (92.1 to 116.9 inches); pale olive (5Y 6/3), olive (5Y 5/3), moist; clay; weak medium and coarse angular blocky structure; extremely hard, very firm; 1 percent fine faint olive yellow (5Y 6/6), moist, masses of oxidized iron and 1 percent fine black (10YR 2/1), moist, iron-manganese concretions; 1 percent threadlike salt masses and 1 percent fine carbonate concretions and 1 percent medium carbonate masses; 1 percent by volume nonflat subrounded indurated chert fragments; strong effervescence; moderately alkaline, pH 8.0; gradual wavy boundary. Lab sample # TAMU814, TAMU815
    Cdk—297 to 434 centimeters (116.9 to 170.9 inches);, pale olive (5Y 6/3), moist; clay; massive; extremely hard, extremely firm; 1 percent fine black (10YR 2/1), moist, iron-manganese concretions and 25 percent faint olive yellow (2.5Y 6/6), moist,; 1 percent fine carbonate concretions at top of horizon and 1 percent medium carbonate masses at top of horizon; fragments; strong effervescence; moderately alkaline, pH 8.0. Lab sample # TAMU817, TAMU816, TAMU818