IDENTIFIERS

  • Current Taxon Name (Soil Name): Stovall
  • OSD
  • Series Extent
  • User Site ID: S1992-TX043-005-copy
  • User Pedon ID: S1992-TX043-005-copy
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 92P0590
  • NCSS Pedon Lab Data NASIS Record ID - 64829
  • Print Date: 11/24/2024

    • 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: 30.4383335
  • Std. Longitude: -103.4369431
  • Datum: WGS84
  • Location Description: From the junction of US Highway 67 and US Highway 90, 8 miles east of Alpine; 4.6 miles north on US highway 67 to junction with Benge Road, 3.5 miles east on Benge Road; 0.2 miles north on trail along fence, then 40 feet west of trail in range.
  • Map Unit: SOA—Stovall silt loam, 0 to 3 percent slopes
  • 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: 30103-D4—Bissett Mountain, Texas

    • PEDON

  • Describers Name: Rex Cochran
  • Current Taxonomic Class: Fine-silty, mixed, superactive, thermic Ustic Haplocalcids
  • Current Taxon Kind: series
  • Pedon Type: OSD pedon
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from PDP 3.x
  • Pedon #: 5
  • Correlated Information:
  • Soil Name - Stovall
  • PSC - 25 to 100 cm.
  • Classificaton Date - 4/18/2013
  • Soil Taxonomic Edition - eleventh edition
  • Moisture Class - aridic (torric)
  • Moisture Subclass - ustic
  • Sampled As Information:
  • Soil Name - Stovall
  • Taxonomic Class - Fine-silty, carbonatic, thermic Ustollic Calciorth
  • Taxon Kind - series
  • Classificaton Date - 3/3/1992
  • Moisture SUBClass - ustic
  • Dynamic Soil Properties:
  • Erosion Class - 1
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Landscape: upland
  • Landform: alluvial flat
  • Slope Shape Across: linear
  • Slope Shape Down: linear
  • Runoff: low
  • Drainage Class: well
  • Surface Fragments: 0.00 percent
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 3/3/1992 (actual site observation date)
  • Air Photo ID: 6
  • 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
    • Pedon Diagnostic Features
    Feature Kind Feature Depth L-H Feature Thickness L-RV-H
    cm

    ochric epipedon

    cambic horizon

    calcic horizon

    0—13

    13—46

    46—185

    —-

    —-

    —-
    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

    213

    30.5

    1259

    —

    0

    279

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    A—0 to 13 centimeters (0.0 to 5.1 inches); pale brown (10YR 6/3), brown (10YR 5/3), moist; silt loam; moderate medium granular structure; slightly hard, very friable; 3.0 very fine and fine roots; 1 percent worm casts; fragments; silty clay loam of field texture; violent effervescence, by hcl, 1n; moderately alkaline, pH 8.2, hellige-truog; clear smooth boundary. Lab sample # 92P03507. Upper 2 cm platy crust.
    Bw1—13 to 28 centimeters (5.1 to 11.0 inches); brown (7.5YR 5/3), brown (7.5YR 4/3), moist; silty clay; moderate medium granular structure; slightly hard, very friable; 3.0 very fine and fine roots; 3.0 fine pores; fragments; silty clay loam of field texture; violent effervescence, by hcl, 1n; moderately alkaline, pH 8.2, hellige-truog; clear smooth boundary. Lab sample # 92P03508
    Bw2—28 to 46 centimeters (11.0 to 18.1 inches); light brown (7.5YR 6/4), brown (7.5YR 5/4), moist; silty clay; weak fine subangular blocky structure; slightly hard, very friable; 3.0 very fine and fine roots; 3.0 fine pores; fragments; silty clay loam of field texture; violent effervescence, by hcl, 1n; moderately alkaline, pH 8.2, hellige-truog; clear smooth boundary. Lab sample # 92P03509
    Bk1—46 to 64 centimeters (18.1 to 25.2 inches); light brown (7.5YR 6/4), brown (7.5YR 5/4), moist; silty clay; moderate medium subangular blocky structure; slightly hard, friable; 0.5 very fine and fine roots; 3.0 fine pores; 3 percent distinct carbonate coats on all faces of peds; 1 percent fine distinct threadlike noncoherent cemented carbonate masses and 2 percent fine distinct irregular noncoherent cemented carbonate masses in matrix; fragments; silty clay loam of field texture; violent effervescence, by hcl, 1n; moderately alkaline, pH 8.2, hellige-truog; gradual smooth boundary. Lab sample # 92P03510
    Bk2—64 to 91 centimeters (25.2 to 35.8 inches); light brown (7.5YR 6/4), brown (7.5YR 5/4), moist; silty clay; weak medium subangular blocky structure; slightly hard, friable; 0.5 very fine and fine roots; 0.5 fine pores; 5 percent distinct carbonate coats on all faces of peds; 1 percent fine distinct threadlike noncoherent cemented carbonate masses and 4 percent fine distinct irregular noncoherent cemented carbonate masses in matrix; fragments; silty clay loam of field texture; violent effervescence, by hcl, 1n; moderately alkaline, pH 8.2, hellige-truog; gradual smooth boundary. Lab sample # 92P03511
    Bk3—91 to 152 centimeters (35.8 to 59.8 inches); pink (7.5YR 7/4), light brown (7.5YR 6/4), moist; silty clay; weak fine subangular blocky structure; slightly hard, friable; 5 percent distinct carbonate coats on all faces of peds; 1 percent fine distinct threadlike noncoherent cemented carbonate masses and 20 percent fine distinct irregular noncoherent cemented carbonate masses in matrix; fragments; silty clay loam of field texture; violent effervescence, by hcl, 1n; moderately alkaline, pH 8.2, hellige-truog; gradual smooth boundary. Lab sample # 92P03512
    Bk4—152 to 185 centimeters (59.8 to 72.8 inches); pink (7.5YR 7/4), light brown (7.5YR 6/4), moist; silty clay; weak fine subangular blocky structure; slightly hard, friable; 5 percent distinct carbonate coats on all faces of peds; 1 percent fine distinct threadlike noncoherent cemented carbonate masses and 30 percent fine distinct irregular noncoherent cemented carbonate masses in matrix; fragments; silty clay loam of field texture; violent effervescence, by hcl, 1n; moderately alkaline, pH 8.2, hellige-truog. Lab sample # 92P03513