IDENTIFIERS

  • Current Taxon Name (Soil Name): Voca
  • OSD
  • Series Extent
  • User Site ID: S1987TX299001
  • User Pedon ID: 87TX299001
  • Lab Information:
  • Certified Lab Pedon Description - yes
  • Lab Source ID - KSSL
  • Lab Pedon # - 87P0465
  • NCSS Pedon Lab Data NASIS Record ID - 59760
  • 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: 30.6208324
  • Std. Longitude: -98.9416656
  • Datum: WGS84
  • Location Description: From Castell; .5 mi SE on FR 152 5.6 mi S and SE on County Rd; 1.3 mi SW on County RD; 50 feet N of Rd in range.
  • State: Texas
  • County: TX299—Llano
  • MLRA: 82—Texas Central Basin

    • PEDON

  • Describers Name: Coburn, Finnell, Brockmann, Lane, Berdanier
  • Current Taxonomic Class: Fine, mixed, superactive, thermic Typic Paleustalfs
  • Current Taxon Kind: series
  • Pedon Type: TUD pedon
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from SSL-CMS data
  • Pedon #: 1
  • Correlated Information:
  • Soil Name - Voca
  • PSC - 35 to 85 cm.
  • Classificaton Date - 2/1/2010
  • Soil Taxonomic Edition - eleventh edition
  • Moisture Class - ustic
  • Moisture Subclass - typic
  • Sampled As Information:
  • Soil Name - Voca
  • Taxonomic Class - Fine, mixed, thermic Udic Paleustalfs
  • Taxon Kind - series
  • Classificaton Date - 4/1/1987
  • Moisture Class - ustic
  • Moisture SUBClass - udic
  • Dynamic Soil Properties:
  • Erosion Class - 1
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Landscape: upland
  • Hill Slope Profile: summit
  • Slope Position: upper third
  • Slope Shape Down: linear
  • Runoff: very low
  • Drainage Class: well
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 4/1/1987 (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
  • Site Erosion Accelerated: water erosion
    • Pedon Diagnostic Features
    Feature Kind Feature Depth L-H Feature Thickness L-RV-H
    cm

    ochric epipedon

    argillic horizon

    paralithic contact

    0—12

    35—106

    122—0

    —-

    —-

    —-
    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

    1

    —

    —

    430

    —

    90

    66

    —

    —

    19

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    A1—0 to 12 centimeters (0.0 to 4.7 inches); brown (10YR 5/3) interior, dark brown (10YR 3/3) interior, moist; gravelly fine sandy loam; moderate very coarse prismatic, and moderate coarse prismatic structure; very hard, friable; 0.5 medium roots throughout and 5.5 fine roots throughout; 0.5 very fine tubular pores; 5 percent by volume 2-39-75 millimeter igneous, unspecified fragments; slightly acid, pH 6.5, hellige-truog; clear smooth boundary. Lab sample # 87P02410. Horizon is very hard and massive when dry. Prisms range from 10 to 20 cm across.; many fine roots throughout; few medium roots throughout
    A2—12 to 35 centimeters (4.7 to 13.8 inches); brown (7.5YR 5/2) interior, dark brown (7.5YR 3/2) interior, moist; gravelly fine sandy loam; moderate coarse prismatic, and moderate very coarse prismatic structure; very hard, friable; 0.5 medium roots throughout and 2.5 fine roots throughout; 5.5 very fine tubular and 0.5 coarse tubular pores; 8 percent by volume 2-39-75 millimeter igneous, unspecified fragments; slightly acid, pH 6.5, hellige-truog; clear smooth boundary. Lab sample # 87P02411. common fine roots throughout; few medium roots throughout
    Bt1—35 to 62 centimeters (13.8 to 24.4 inches);, reddish brown (5YR 4/4) interior, moist; gravelly clay; moderate medium prismatic, and moderate medium angular blocky structure; very hard, very firm; 0.5 medium roots throughout and 0.5 fine roots throughout; 37 percent distinct , moist, clay films on all faces of peds; 1 percent medium spherical dark concretions; 18 percent by volume 2-39-75 millimeter igneous, unspecified fragments; neutral, pH 7.0, hellige-truog; gradual smooth boundary. Lab sample # 87P02412. Coating in (7.5YR 4/2) on faces of peds.; few medium dark concretions concentrations; common clay films surface features on vertical and horizontal faces of peds; few fine roots throughout; few medium roots throughout; discontinuous - phpvsfiid 1164907; discontinuous - phpvsfiid 1164907
    Bt2—62 to 84 centimeters (24.4 to 33.1 inches);, brown (10YR 4/3) interior, moist; gravelly sandy clay; moderate medium prismatic, and moderate medium angular blocky structure; very hard, very firm; 0.5 medium roots throughout and 0.5 fine roots throughout; 37 percent distinct , moist, clay films on all faces of peds; 1 percent medium spherical dark concretions; 18 percent by volume 2-39-75 millimeter igneous, unspecified fragments; neutral, pH 7.0, hellige-truog; gradual smooth boundary. Lab sample # 87P02413. Coating of (7.5YR 4/4) on faces of peds; few streaks of (10YR 2/1); discontinuous strata of granitic fragments up to 18 cm across.; few medium dark concretions concentrations; common clay films surface features on vertical and horizontal faces of peds; few fine roots throughout; few medium roots throughout; discontinuous - phpvsfiid 1164905; discontinuous - phpvsfiid 1164905
    Bt3—84 to 106 centimeters (33.1 to 41.7 inches);, 40 percent reddish brown (5YR 4/4) interior and 30 percent brown (10YR 4/3) interior and 30 percent black (10YR 2/1) interior, moist; very gravelly sandy clay loam; 1 percent yellowish brown (10YR 5/6) fine distinct mottles; weak medium prismatic parts to moderate medium angular blocky structure; very hard, very firm; 0.5 medium roots throughout and 0.5 fine roots throughout; 15 percent distinct , moist, clay films on all faces of peds; 2 percent by volume 75-162-250 millimeter igneous, unspecified fragments and 37 percent by volume 2-39-75 millimeter igneous, unspecified fragments; slightly alkaline, pH 7.6, hellige-truog. Lab sample # 87P02414. Common feldspar crystals.; few clay films surface features on vertical and horizontal faces of peds; few fine roots throughout; few medium roots throughout; few fine distinct 10YR56 mottles; discontinuous - phpvsfiid 1164906; discontinuous - phpvsfiid 1164906
    BCt—106 to 122 centimeters (41.7 to 48.0 inches);, 50 percent reddish brown (5YR 4/4) interior and 50 percent brown (10YR 4/3) interior, moist; very gravelly sandy clay loam; weak medium subangular blocky structure; very hard, very firm; 2 percent distinct , moist, clay films on vertical faces of peds; 1 percent fine faint black (7.5YR 2.5/1) and red (2.5YR 4/6) iron-manganese masses; 55 percent by volume 2-39-75 millimeter igneous, unspecified fragments; slightly alkaline, pH 7.5, hellige-truog. Lab sample # 87P02415. Redder areas are gravelly; browner areas are nearly gravel free.; very few clay films surface features on vertical faces of peds; patchy - phpvsfiid 1164908; patchy - phpvsfiid 1164908
    Cr—122 to 200 centimeters (48.0 to 78.7 inches); coarse sandy loam; fragments. Lab sample # 87P02416. Weathered granite (grus); no evidence of clay illuviations; a very few fine roots between grus fragments; most roots stopped.