IDENTIFIERS

  • Current Taxon Name (Soil Name): Scotal
  • OSD
  • Series Extent
  • User Site ID: S1995-TX043-019-copy
  • User Pedon ID: S1995-TX043-019-copy
  • Lab Information:
  • Certified Lab Pedon Description - yes
  • Lab Source ID - SSL
  • Lab Pedon # - 98P0430
  • NCSS Pedon Lab Data NASIS Record ID - 10700
  • Print Date: 12/4/2024

    • 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: 29.9178972
  • Std. Longitude: -103.6204028
  • Datum: WGS84
  • Location Description: Brewster County, Texas, from the junction of US Highway 90 and Texas Highway 118 in Alpine; 33.6 miles south on Texas Highway 118 to locked gate, 2.5 miles west on ranch road, 300 feet north on ranch road to Whirlwind Spring Corral, site is 300 feet west of road on mid slope of hill in range. Whirlwind Spring USGS 7.5 minute quadrangle.
  • Country: US—United States
  • State: Texas
  • County: TX043—Brewster
  • MLRA: 42—Southern Desertic Basins, Plains, and Mountains
  • MLRA Soil Survey Area: SW-MAF—Marfa, Texas
  • Non-MLRA Soil Survey Area: TX622—Brewster County, Texas (Main Part)
  • 7.5 Minute USGS Quad: 29103-H5—Whirlwind Spring, Texas

    • PEDON

  • Describers Name: Lynn Loomis, Jerry Rives, and Alan Terrell
  • Current Taxonomic Class: Loamy-skeletal, mixed, superactive, calcareous, thermic Lithic Ustic Torriorthents
  • Current Taxon Kind: series
  • Pedon Type: OSD pedon
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from PDP 3.x
  • Pedon #: 19
  • Correlated Information:
  • Soil Name - Scotal (flagged as OSD)
  • PSC - 0 to 20 cm.
  • Classificaton Date - 6/28/2016
  • Classifier - Lynn Loomis
  • Soil Taxonomic Edition - twelfth edition
  • Moisture Class - aridic (torric)
  • Moisture Subclass - ustic
  • Sampled As Information:
  • Soil Name - Scotal
  • Taxonomic Class - Loamy-skeletal, mixed, superactive, calcareous, th
  • Taxon Kind - series
  • Classificaton Date - 1/1/1995
  • Moisture SUBClass - ustic
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no
  • Certification Status: certified
  • QC Status: level 1


    • SITE

  • Drainage Class: well
  • Bedrock: very strongly coherent tuff, basic
  • Geology: Pruett Formation formation.
  • Surface Fragments: 40.00 percent nonflat subangular indurated 2- to 75-millimeter tuff, unspecified, 5.00 percent nonflat subangular indurated 250- to 600-millimeter tuff, unspecified, 2.00 percent nonflat subangular indurated 600- to 2000-millimeter tuff, unspecified, 10.00 percent nonflat subangular indurated 75- to 250-millimeter tuff, unspecified,
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 2/28/1995 (actual site observation date)
  • Surface Cover Properties:
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
    • Pedon Restrictions
    Kind Hardness Restriction Depth L-H Restriction Thickness L-RV-H
    cm

    bedrock, lithic

    strongly coherent

    20 - 200

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

    ochric epipedon

    lithic contact

    0—20

    20—20

    —-

    —-
    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

    —

    —

    —

    —

    —

    305

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    —

    —

    —

    —

    —

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    —

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    A—0 to 8 centimeters (0.0 to 3.1 inches); brown (10YR 5/3), dark brown (10YR 3/3), moist; very gravelly sandy clay loam; moderate very fine and fine granular structure; slightly hard, friable, slightly sticky, slightly plastic; 3.0 very fine and fine roots; 2 percent distinct white (10YR 8/1), dry, carbonate coats on rock fragments; 50 percent by volume nonflat subrounded strongly coherent cemented 2-39-75 millimeter tuff, basic fragments; 7 percent of calcium carbonate equivalent; strong effervescence, by hcl, 1n; moderately alkaline, pH 8.2, hellige-truog; clear smooth boundary. Lab sample # 98P02489; observed in pit, small
    Bk—8 to 20 centimeters (3.1 to 7.9 inches); yellowish brown (10YR 5/4), dark yellowish brown (10YR 4/4), moist; very gravelly clay loam; weak fine and medium subangular blocky structure; slightly hard, friable; 3.0 very fine and fine roots; 25 percent distinct white (10YR 8/1), dry, carbonate coats on rock fragments; 45 percent by volume nonflat subangular very strongly coherent cemented 2-39-75 millimeter tuff, basic fragments; 14 percent of calcium carbonate equivalent; violent effervescence, by hcl, 1n; moderately alkaline, pH 8.2, hellige-truog; abrupt smooth boundary. Lab sample # 98P02490; observed in pit, small
    R1—20 to 36 centimeters (7.9 to 14.2 inches); white (10YR 8/1) bedrock; 3.0 very fine and fine roots in cracks; fragments; abrupt smooth boundary. Lab sample # 98P02491; observed in pit, small. fractured tuffaceous bedrock; fractures are 5 to 7 inches apart and filled with yellowish brown (10YR 5/4) soil material from above.
    R2—36 to 200 centimeters (14.2 to 78.7 inches); white (10YR 8/1) bedrock; fragments.; observed in pit, small