IDENTIFIERS

  • Current Taxon Name (Soil Name): Mailtrail
  • OSD
  • Series Extent
  • User Site ID: 90TX607005
  • User Pedon ID: 90TX607005
  • Vegetation Plot ID: 90TX607005
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Print Date: 11/23/2024

    • 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: 29.8594437
  • Std. Longitude: -100.4038925
  • Datum: WGS84
  • Location Description: From the junction of US Highway 377, Texas Highway 55, and Texas Highway 41 in Rocksprings, 0.5 mile west on Texas Highway 55 to junction with US 377, 3.4 miles west on US Highway 377 to junction with FM Road 674, 16.55 miles southwest and south on FM Road 674, then 30 feet southeast in highway right-of-way.
  • State: Texas
  • County: TX137—Edwards
  • MLRA: 81B—Edwards Plateau, Central Part
  • 7.5 Minute USGS Quad: 29100-G4—Twomile Draw, Texas

    • PEDON

  • Describers Name: L.E. LOOMIS
  • Pedon Type: TUD pedon
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from PDP 3.x
  • Sampled As Information:
  • Soil Name - Mailtrail
  • PSC - 0 to 36 cm.
  • Classificaton Date - 11/12/1990
  • Moisture Class - ustic
  • Dynamic Soil Properties:
  • Erosion Class - 1
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Landscape: river valley
  • Landform: fluvial terrace
  • Geomorphic Component Hills: interfluve
  • Hill Slope Profile: shoulder
  • Slope Position: on a slope
  • Slope Shape Across: linear
  • Slope Shape Down: convex
  • Runoff: medium
  • Drainage Class: well
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 11/12/1990 (actual site observation date)
  • Air Photo ID: 86
  • Surface Cover Properties:
  • 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

    ARIST

    BOLAT

    BOUN

    CAPL3

    COSP3

    DITE3

    ERSE5

    MATR3

    OPUNT

    QUVI

    SCUTE

    SETAR

    Aristida

    Bothriochloa laguroides ssp. torreyana

    Bouteloua uniflora

    Carex planostachys

    Condalia spathulata

    Diospyros texana

    Eriochloa sericea

    Mahonia trifoliolata

    Opuntia

    Quercus virginiana

    Scutellaria

    Setaria

    threeawn

    silver beardgrass

    oneflower grama

    cedar sedge

    knifeleaf condalia

    Texas persimmon

    Texas cupgrass

    algerita

    pricklypear

    live oak

    skullcap

    bristlegrass

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

    mollic epipedon

    calcic horizon

    petrocalcic horizon

    0—22

    12—22

    22—165

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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

    3

    —

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    579

    —

    225

    610

    —

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    18.3

    26.1

    9.4

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    TX394

    Rocksprings

    Official U.S.
    A1—0 to 12 centimeters (0.0 to 4.7 inches); black (10YR 2/1), black (10YR 2/1), dry; clay; 36 percent clay; weak medium subangular blocky structure; slightly hard, friable, slightly sticky, slightly plastic; 7.0 very fine and fine roots throughout and 3.0 medium roots throughout; 20.0 very fine moderate-continuity interstitial pores; 1 percent fine spherical carbonate masses and 2 percent fine spherical worm casts; 5 percent by volume subangular 2-39-75 millimeter conglomerate, calcareous fragments and 7 percent by volume subrounded 2-39-75 millimeter limestone, unspecified fragments; strong effervescence, by hcl, 1n; slightly alkaline, pH 7.8, hellige-truog; clear smooth boundary. Lab sample # 91P1032; moist when described;
    A2—12 to 22 centimeters (4.7 to 8.7 inches); black (10YR 2/1), black (10YR 2/1), dry; extremely cobbly clay; 36 percent clay; weak medium subangular blocky parts to moderate fine granular structure; slightly hard, friable, slightly sticky, slightly plastic; 5.0 very fine and fine roots around fragments and 1.0 medium roots throughout; 20.0 very fine moderate-continuity interstitial pores; 25 percent by volume subangular 2-39-75 millimeter conglomerate, calcareous fragments and 50 percent by volume subangular 75-162-250 millimeter conglomerate, calcareous fragments; strong effervescence, by hcl, 1n; slightly alkaline, pH 7.8, hellige-truog; abrupt smooth boundary.; moist when described;
    Bkm1—22 to 36 centimeters (8.7 to 14.2 inches); very pale brown (10YR 8/2), very pale brown (10YR 8/2), dry; weathered bedrock; massive; weakly cemented by carbonates; fragments; violent effervescence, by hcl, 1n; abrupt smooth boundary.; moist when described;
    Bkm2—36 to 165 centimeters (14.2 to 65.0 inches); very pale brown (10YR 8/2), very pale brown (10YR 8/2), dry; weathered bedrock; massive; weakly cemented by carbonates; fragments; violent effervescence, by hcl, 1n.; moist when described;