IDENTIFIERS

  • Current Taxon Name (Soil Name): Butcherknife
  • OSD
  • Series Extent
  • User Site ID: S1995TX043011
  • User Pedon ID: 95TX043011
  • Vegetation Plot ID: S1995TX043011
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 98P0419
  • NCSS Pedon Lab Data NASIS Record ID - 10689
  • Print Date: 11/26/2024

    • 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: 29.8730564
  • Std. Longitude: -103.5780563
  • Datum: WGS84
  • Location Description: Brewster County, Texas from the junction of US Highway 90 and Texas Highway 118 in Alpine, 36.6 miles south on Texas Highway 118, 100 feet west of highway range. Site is 0.1 mile north of second gate into 02 Ranch. Whirlwind Spring USGS 7.5 minute quadrangle.
  • Map Unit: MOA—Martillo and Butcherknife soils, 0 to 3 percent slopes
  • Country: US—United States
  • State: Texas
  • County: TX043—Brewster
  • MLRA: 42—Southern Desertic Basins, Plains, and Mountains
  • Regional Office: 8—Phoenix, AZ
  • Non-MLRA Soil Survey Area: TX622—Brewster County, Texas (Main Part)
  • 7.5 Minute USGS Quad: 29103-G5—Buck Hill, Texas

    • PEDON

  • Describers Name: Lynn E. Loomis, Jerry L. Rives, and Alan C. Terrell
  • Current Taxonomic Class: Fine, mixed, superactive, thermic Ustic Calcigypsids
  • Pedon Type: OSD pedon
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from PDP 3.x
  • Pedon #: 11
  • Correlated Information:
  • Soil Name - Butcherknife
  • PSC - 25 to 100 cm.
  • Classificaton Date - 2/1/2010
  • Soil Taxonomic Edition - tenth edition
  • Moisture Class - aridic (torric)
  • Moisture Subclass - ustic
  • Sampled As Information:
  • Soil Name - Butcherknife
  • Taxonomic Class - Fine, mixed, superactive, thermic Ustic Calcigypsi
  • Taxon Kind - series
  • Classificaton Date - 7/1/1995
  • Moisture SUBClass - ustic
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Runoff: medium
  • Drainage Class: well
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 7/1/1995 (actual site observation date)
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - grass/herbaceous cover
  • Site Obs. Cover Kind 2 - rangeland, grassland
  • 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

    KOEBE

    PLMU3

    PLMU3

    PROSO

    ZIOBO

    Koeberlinia

    Pleuraphis mutica

    Pleuraphis mutica

    Prosopis

    Ziziphus obtusifolia var. obtusifolia

    allthorn

    tobosagrass

    tobosagrass

    mesquite

    lotebush

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    —

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    —

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

    bedrock, paralithic

    bedrock, paralithic

    weakly coherent

    moderately coherent

    104 - 150

    150 - 203

    —

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

    ochric epipedon

    gypsic horizon

    calcic horizon

    0—10

    56—104

    76—104

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    —-

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    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

    —

    —

    1161

    —

    279

    —

    —

    18.9

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    A—0 to 10 centimeters (0.0 to 3.9 inches); brown (7.5YR 5/3), brown (7.5YR 4/3), moist; moderate fine and medium subangular blocky parts to moderate very fine and fine granular structure; 3.0 fine roots throughout; fragments; strong effervescence; very strongly alkaline, pH 11.0, hellige-truog; clear smooth boundary. Lab sample # 98P02431; observed in trench. 14 percent calcium carbonate equivalent; 1.2 ds/m electrical conductivity; moderately alkaline; thin platy structure in upper 1 inch; 4 to 6 inches thick. The A horizon has color with hue of 7.5YR or 10YR, value of 5 or 6, and chroma of 2 to 4. Texture is clay loam, silty clay loam, or silty clay with a silicate clay content of 25 to 35 percent. Some pedons have moist chroma less than 3.5, but the epipedon is not moist for 90 cumulative days in most years.
    Bw1—10 to 30 centimeters (3.9 to 11.8 inches); brown (7.5YR 5/3), brown (7.5YR 4/3), moist; weak coarse prismatic parts to moderate medium and coarse angular blocky structure; 3.0 fine roots throughout; fragments; violent effervescence; clear smooth boundary. Lab sample # 98P02432; observed in trench. 16 percent calcium carbonate equivalent; 4.0 dS/m electrical conductivity; moderately alkaline. 8 to 14 inches thick. The Bw horizon has hue of 7.5YR or 10YR, value of 5 or 6, and chroma of 2 to 4. Texture is clay or silt clay with a silicate clay content of 40 to 55 percent. Cracks are common, but slickensides and wedge shaped peds are not present. Calcium carbonate equivalent is less than 15 percent. Electrical conductivity ranges from 2 to 12 dS/m.
    Bw2—30 to 56 centimeters (11.8 to 22.0 inches); brown (7.5YR 5/3), brown (7.5YR 4/3), moist; weak coarse prismatic parts to moderate medium and coarse angular blocky structure; 3.0 very fine and fine roots throughout; 75 percent distinct coats on faces of peds; fragments; violent effervescence; very strongly alkaline, pH 11.0, hellige-truog; clear smooth boundary. Lab sample # 98P02433; observed in trench. 14 percent calcium carbonate equivalent; 8.4 dS/m electrical conductivity; moderately alkaline; 9 to 14 inches thick.; continuous - phpvsfiid 200605; continuous - phpvsfiid 200605
    Bkyz—56 to 76 centimeters (22.0 to 29.9 inches); brown (7.5YR 5/3), brown (7.5YR 4/3), moist; weak coarse subangular blocky, and moderate medium subangular blocky structure; 0.5 very fine roots throughout; 3 percent fine and medium irregular noncoherent cemented salt masses throughout; fragments; violent effervescence; very strongly alkaline, pH 10.0, hellige-truog; clear smooth boundary. Lab sample # 98P02434; observed in trench. 10 percent calcium carbonate equivalent; 9.8 dS/m electrical conductivity; 22.5 percent gypsum; moderately alkaline; 5 to 21 inches. The Bkyz horizon has color with hue of 7.5YR or 10YR, value of 5 or 6 and chroma of 2 to 4. Texture is clay loam, clay, or silty clay with a silicate clay content of 30 to 45 percent. Gypsum content ranges from 8 to 22 percent. Electrical conductivity ranges from 8 to 12 dS/m. Also sampled as 97P0362.
    BCkyz—76 to 94 centimeters (29.9 to 37.0 inches); pinkish gray (7.5YR 6/2), brown (7.5YR 4/2), moist; weak medium and coarse subangular blocky structure; 0.5 very fine roots throughout; 10 percent prominent very pale brown (10YR 8/2) coats on faces of peds; 3 percent fine and medium irregular noncoherent cemented salt masses throughout and 3 percent fine and medium threadlike salt masses between peds; fragments; violent effervescence; clear smooth boundary. Lab sample # 98P02435; observed in trench. 27 percent calcium carbonate equivalent; 11.0 dS/m electrical conductivity; 20 percent gypsum; moderately alkaline; 7 to 15 inches. The BCkyz or CBkyz horizon has color with hue of 7.5YR or 10YR, value of 5 or 6, and chroma of 2 to 4. Texture is loam or clay loam with a silicate clay content of 24 to 35 percent. Calcium carbonate equivalent ranges from 25 to 4 percent. Gypsum content ranges from 14 to 22 percent. Electrical conductivity ranges from 8 to 12 dS/m.; continuous - phpvsfiid 202687; continuous - phpvsfiid 202687
    CBkyz—94 to 104 centimeters (37.0 to 40.9 inches); pinkish gray (7.5YR 6/2), brown (7.5YR 4/2), moist; weak medium and coarse subangular blocky structure; 0.5 very fine roots throughout; 1 percent prominent carbonate coats on faces of peds; fragments; violent effervescence; clear smooth boundary. Lab sample # 98P02436; observed in trench. 32 percent calcium carbonate equivalent; 11.5 dS/m electrical conductivity; 14 percent gypsum; moderately alkaline; 4 to 8 inches thick. The BCkyz or CBkyz horizon has color with hue of 7.5YR or 10YR, value of 5 or 6, and chroma of 2 to 4. Texture is loam or clay loam with a silicate clay content of 24 to 35 percent. Calcium carbonate equivalent ranges from 25 to 40 percent. Gypsum content ranges from 14 to 22 percent. Electrical conductivity ranges from 8 to 12 dS/m.; continuous - phpvsfiid 202688; continuous - phpvsfiid 202688
    Cr1—104 to 122 centimeters (40.9 to 48.0 inches); gray (5YR 5/1); 10 percent prominent carbonate coats on rock fragments; fragments; abrupt smooth boundary. Lab sample # 98P02437; observed in trench. The Cr or R horizon has color with hue of 5YR to 2.5YR, value of 5 to 7, and chroma of 1 to 4. It is tuff bedrock of the Duff and Pruett Formations.; continuous - phpvsfiid 202689; continuous - phpvsfiid 202689
    Cr2—122 to 150 centimeters (48.0 to 59.1 inches); gray (5YR 5/1); 10 percent prominent carbonate coats on rock fragments; fragments; abrupt smooth boundary. Lab sample # 98P02438; observed in trench. continuous - phpvsfiid 202690; continuous - phpvsfiid 202690
    Cr3—150 to 203 centimeters (59.1 to 79.9 inches); gray (5YR 6/1); 1 percent distinct carbonate coats and 3 percent strong brown (7.5YR 5/6) coats on rock fragments; fragments. Lab sample # 98P02439; observed in trench. Conchoidal fractures.; discontinuous - phpvsfiid 202692; discontinuous - phpvsfiid 202692