IDENTIFIERS

  • Current Taxon Name (Soil Name): Rio Diablo
  • OSD
  • Series Extent
  • User Site ID: 91TX607002
  • User Pedon ID: 91TX607002
  • Vegetation Plot ID: 91TX607002
  • User Site Association ID: 5263
  • Transect:
  • User Transect ID - E13-1
  • Transect Stop Number - 2
  • Transect Interval - 2,640.0
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Pedon # - 91P0512
  • NCSS Pedon Lab Data NASIS Record ID - 63554
  • Print Date: 11/21/2024

    • 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: 30.2291660
  • Std. Longitude: -100.6636124
  • Datum: WGS84
  • Location Description: From junction of US Highway 277 and Texas Highway 55 in northwestern Edwards County, 4.3 miles south on US Highway 277, 50 feet east of fence in rangeland.
  • State: Texas
  • MLRA: 81B—Edwards Plateau, Central Part
  • 7.5 Minute USGS Quad: 30100-B6—Turney Draw NW, Texas

    • PEDON

  • Describers Name: Wayne J. Gabriel, Lynn E. Loomis. Sampled by Mike Golden and Benny Brasher.
  • Current Taxonomic Class: Fine, mixed, thermic Aridic Haplustolls
  • Current Taxon Kind: series
  • Pedon Type: OSD pedon
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from PDP 3.x
  • Sampled As Information:
  • Soil Name - Rio Diablo
  • Taxonomic Class - Fine, mixed, thermic Aridic Haplustolls
  • PSC - 25 to 102 cm.
  • Classificaton Date - 2/26/1991
  • Moisture Class - ustic
  • Dynamic Soil Properties:
  • Erosion Class - 1
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Landscape: river valley
  • Landform: alluvial flat
  • Hill Slope Profile: toeslope
  • Slope Position: drainageway
  • Slope Shape Across: linear
  • Slope Shape Down: linear
  • Runoff: low
  • Drainage Class: well
  • Flooding: rare flooding
  • Ponding: none ponding
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 2/26/1991 (actual site observation date)
  • Air Photo ID: 9
  • Microrelief Elevation: 3
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - grass/herbaceous cover
  • Site Obs. Cover Kind 2 - rangeland, savanna
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
    • Pedon Horizon Lab Results - 1
    Horizon Top Depth Bottom Depth Sample ID Data Collector Total Clay CaCO3 Clay Total Silt Fine Silt Co. Silt Total Sand Total Sand Method VC Sand Co. Sand Med. Sand Fine Sand VF Sand VF Sand Method Texture Class - Field Lab Rubbed Fiber Unrubbed Fiber pH H2O
    cm cm % % % % % % % % % % % % %

    A1

    A2

    Bw1

    Bw2

    Bk

    2Bk

    2BCk

    0

    26

    39

    56

    83

    109

    161

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    Pedon Horizon Lab Results - 2
    Horizon Top Depth Bottom Depth Sample ID pH CaCl2 pH NaF pH Ox Delta pH LL PL PI Atter. Samp. Cond. COLE Pot. Acidity Ca + Mg - Meh 2 K Ca + Mg - Sat. Paste KCl Extract. Acidity Base Sat. - Meh 2 CEC-7 CEC-8.2
    cm cm % % % cm/cm meq/100g cmol(+)/kg cmol(+)/kg mmol(+)/l cmol(+)/kg % cmol(+)/kg cmol(+)/kg

    A1

    A2

    Bw1

    Bw2

    Bk

    2Bk

    2BCk

    0

    26

    39

    56

    83

    109

    161

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    Pedon Horizon Lab Results - 3
    Horizon Top Depth Bottom Depth Sample ID ECEC Phosphate P NO3-N EC EC Method EC 1:5 by volume CaCO3 Equiv. Equiv. Gypsum Na SAR Gypsum Req. Humic Color Fulvic Color Humic + Fulvic Color Al PI Pyro. Hue PyrO. Value Pyro. Chroma
    cm cm cmol(+)/kg mg/kg mg/kg dS/m dS/m % % mmol(+)/l % L-pcu/g L-pcu/g L-pcu/g %

    A1

    A2

    Bw1

    Bw2

    Bk

    2Bk

    2BCk

    0

    26

    39

    56

    83

    109

    161

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    18

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    26

    45

    77

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    Vegetation Plot Plants
    Plant Symbol Scientific Name National Vernacular Name Plant Type Group Canopy Cover % Vegetation Stata Level

    ARIST

    COVI8

    DICOC

    MATR3

    NALE3

    OPLE

    OPUNT

    PAOB

    PLMU3

    PROSO

    Aristida

    Condalia viridis

    Digitaria cognata var. cognata

    Mahonia trifoliolata

    Nassella leucotricha

    Opuntia leptocaulis

    Opuntia

    Panicum obtusum

    Pleuraphis mutica

    Prosopis

    threeawn

    green snakewood

    Carolina crabgrass

    algerita

    Texas wintergrass

    Christmas cactus

    pricklypear

    vine mesquite

    tobosagrass

    mesquite

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

    mollic epipedon

    cambic horizon

    calcic horizon

    0—39

    39—109

    109—200

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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

    0

    137

    61

    648

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    135

    559

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    18.3

    26.7

    8.9

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    TX424

    Sonora, Texas

    Official U.S.
    A1—0 to 26 centimeters (0.0 to 10.2 inches); brown (7.5YR 4/2), dark brown (7.5YR 3/2), moist; silty clay; weak medium prismatic parts to weak medium subangular blocky parts to moderate very fine and fine granular structure; slightly hard, very friable, moderately sticky, moderately plastic; 4.0 very fine and fine roots throughout and 1.0 medium roots throughout; 3.0 very fine and fine moderate-continuity interstitial and tubular and 1.0 medium and coarse high-continuity tubular pores; 1 percent by volume subrounded 2-39-75 millimeter limestone, unspecified fragments; violent effervescence, by hcl, 1n; moderately alkaline, pH 8.0, hellige-truog; clear wavy boundary.; moist when described;
    A2—26 to 39 centimeters (10.2 to 15.4 inches); brown (7.5YR 4/2), dark brown (7.5YR 3/2), moist; silty clay; weak medium prismatic parts to moderate medium subangular blocky parts to moderate very fine and fine granular structure; slightly hard, very friable, moderately sticky, moderately plastic; 2.0 very fine and fine roots throughout and 1.0 medium roots throughout; 2.0 very fine and fine moderate-continuity interstitial and tubular and 1.0 medium and coarse high-continuity tubular pores; 1 percent by volume subrounded 2-39-75 millimeter limestone, unspecified fragments; violent effervescence, by hcl, 1n; moderately alkaline, pH 8.1, hellige-truog; clear wavy boundary.; moist when described;
    Bw1—39 to 56 centimeters (15.4 to 22.0 inches); brown (7.5YR 5/2), brown (7.5YR 4/2), moist; silty clay; weak medium prismatic parts to moderate fine and medium subangular blocky structure; slightly hard, friable, moderately sticky, moderately plastic; 1.0 very fine and fine roots throughout; 2.0 very fine and fine moderate-continuity interstitial and tubular and 1.0 medium and coarse high-continuity tubular pores; 10 percent distinct pressure faces on horizontal faces of peds; 1 percent by volume subrounded 2-39-75 millimeter limestone, unspecified fragments; violent effervescence, by hcl, 1n; moderately alkaline, pH 8.1, hellige-truog; gradual wavy boundary.; moist when described;. continuous - phpvsfiid 94949; continuous - phpvsfiid 94949
    Bw2—56 to 83 centimeters (22.0 to 32.7 inches); brown (7.5YR 5/3), brown (7.5YR 4/3), moist; silty clay; weak medium prismatic parts to moderate fine and medium subangular blocky structure; slightly hard, friable, moderately sticky, moderately plastic; 1.0 very fine and fine roots throughout and 1.0 very coarse roots throughout; 1.0 very fine and fine moderate-continuity interstitial and tubular pores; 25 percent distinct pressure faces on horizontal faces of peds; 1 percent by volume subrounded 2-39-75 millimeter limestone, unspecified fragments; violent effervescence, by hcl, 1n; moderately alkaline, pH 8.1, hellige-truog; clear wavy boundary.; moist when described;. continuous - phpvsfiid 94658; continuous - phpvsfiid 94658
    Bk—83 to 109 centimeters (32.7 to 42.9 inches); brown (7.5YR 5/3), brown (7.5YR 4/3), moist; silty clay; weak coarse prismatic parts to moderate fine and medium subangular blocky structure; slightly hard, friable, moderately sticky, moderately plastic; 1.0 very fine and fine roots throughout; 3.0 fine moderate-continuity dendritic tubular pores; 1 percent fine dendritic carbonate threads throughout; 1 percent by volume subrounded 20-48-75 millimeter limestone, unspecified fragments and 8 percent by volume subrounded 2-39-75 millimeter limestone, unspecified fragments; violent effervescence, by hcl, 1n; slightly alkaline, pH 7.8, hellige-truog; clear wavy boundary.; moist when described;
    2Bk—109 to 161 centimeters (42.9 to 63.4 inches); 94 percent light brown (7.5YR 6/4) and 6 percent pink (7.5YR 8/4), 94 percent brown (7.5YR 5/4) and 6 percent pink (7.5YR 7/4), moist; gravelly clay; weak fine subangular blocky structure; slightly hard, very friable, moderately sticky, moderately plastic; 1.0 very fine and fine roots throughout; 3.0 fine moderate-continuity dendritic tubular pores; 4 percent coarse spherical lime masses throughout and 1 percent fine dendritic carbonate threads throughout; 10 percent by volume subrounded 75-162-250 millimeter limestone, unspecified fragments and 17 percent by volume subrounded 2-39-75 millimeter limestone, unspecified fragments; violent effervescence, by hcl, 1n; moderately alkaline, pH 8.1, hellige-truog; abrupt wavy boundary.; dry when described;
    2BCk—161 to 203 centimeters (63.4 to 79.9 inches); 88 percent pink (7.5YR 7/4) and 12 percent pink (7.5YR 8/4), 88 percent light brown (7.5YR 6/4) and 12 percent pink (7.5YR 7/4), moist; cobbly silt loam; weak medium subangular blocky structure; hard when dry, friable, moderately sticky, moderately plastic; 7.0 very fine and fine moderate-continuity dendritic tubular pores; 8 percent coarse irregular lime masses throughout and 2 percent fine dendritic carbonate threads throughout; 10 percent by volume subrounded 2-39-75 millimeter limestone, unspecified fragments and 15 percent by volume subrounded 75-162-250 millimeter limestone, unspecified fragments; violent effervescence, by hcl, 1n; moderately alkaline, pH 8.2, hellige-truog.; dry when described;