IDENTIFIERS

  • Current Taxon Name (Soil Name): Gunlock
  • OSD
  • Series Extent
  • User Site ID: 1994MO125027M
  • User Pedon ID: 1994MO125027
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - MCL
  • Lab Pedon # - M9412527
  • Print Date: 12/17/2024

    • 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: 38.2772222
  • Std. Longitude: -91.9350000
  • Datum: WGS84
  • Township: T41N
  • Range: R9W
  • Section: 21
  • PLSS Details: 1600 feet E and 800 feet N of the SW corner
  • State: Missouri
  • County: MO125—Maries
  • MLRA: 116A—Ozark Highland

    • PEDON

  • Describers Name: Keith Davis Brad Berhorst Wyn Kelley
  • Current Taxonomic Class: Fine-silty, mixed Oxyaquic Hapludalfs
  • Pedon Type: map unit inclusion
  • Pedon Purpose: laboratory sampling site
  • Pedon Record Orgin: Converted from PDP 3.x
  • Sampled As Information:
  • Soil Name - Gunlock
  • Taxonomic Class - Fine-silty, mixed Oxyaquic Hapludalfs
  • Taxon Kind - series
  • PSC - 13 to 63 cm.
  • Classificaton Date - 12/2/1994
  • Moisture Class - udic
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: loess and/or residuum weathered from dolomite
  • Landscape: hills
  • Landform: ridge
  • Geomorphic Component Hills: interfluve
  • Hill Slope Profile: backslope
  • Slope Position: on a slope
  • Slope Shape Across: convex
  • Slope Shape Down: convex
  • Runoff: high
  • Drainage Class: moderately well
  • Flooding: none flooding
  • Ponding: none ponding
  • Bedrock: h dolomite (dolostone)
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 12/2/1994 (actual site observation date)
  • Air Photo ID: 3B
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - grass/herbaceous cover
  • 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

    0—13

    13—165

    —-

    —-
    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

    15

    91

    45.7

    271

    —

    0

    991

    —

    —

    12.8

    —

    —

    13.9

    —

    —

    —

    —

    —

    —

    —
    Ap—0 to 13 centimeters (0.0 to 5.1 inches); dark grayish brown (10YR 4/2) interior silt loam; moderate thin platy parts to moderate fine granular structure; friable; 10.0 very fine and fine roots throughout and 1.0 medium and coarse roots throughout; 2.0 fine moderate-continuity vesicular pores; fragments; very strongly acid, pH 4.9, hellige-truog; clear smooth boundary. Lab sample # MU050704
    Bt1—13 to 28 centimeters (5.1 to 11.0 inches); 95 percent yellowish brown (10YR 5/6) interior silt loam; 5 percent yellowish brown (10YR 5/4) medium distinct irregular mottles; moderate fine subangular blocky parts to moderate fine granular structure; friable; 3.0 very fine to coarse roots between peds; 5.0 very fine and fine moderate-continuity vesicular pores; 30 percent faint clay films on faces of peds; fragments; strongly acid, pH 5.2, hellige-truog; clear smooth boundary. Lab sample # MU050705. discontinuous - phpvsfiid 145047; discontinuous - phpvsfiid 145047
    Bt2—28 to 48 centimeters (11.0 to 18.9 inches); yellowish brown (10YR 5/6) interior silty clay loam; moderate fine subangular blocky structure; firm; 3.0 very fine to coarse roots between peds; 2.0 very fine low-continuity vesicular pores; 40 percent distinct clay films on faces of peds; fragments; very strongly acid, pH 5.0, hellige-truog; clear smooth boundary. Lab sample # MU050706. discontinuous - phpvsfiid 145048; discontinuous - phpvsfiid 145048
    Bt3—48 to 61 centimeters (18.9 to 24.0 inches); 70 percent yellowish brown (10YR 5/4) interior silty clay loam; 30 percent yellowish brown (10YR 5/6) fine distinct irregular mottles; moderate fine subangular blocky structure; firm; 2.0 very fine and fine roots between peds and 0.8 medium and coarse roots between peds; 1.0 very fine and fine low-continuity vesicular pores; 10 percent prominent clay films on all faces of peds and 35 percent distinct clay films on faces of peds; fragments; very strongly acid, pH 4.8, hellige-truog; clear smooth boundary. Lab sample # MU050707. Few subrounded chert pebbles.; discontinuous - phpvsfiid 145049; discontinuous - phpvsfiid 145050; discontinuous - phpvsfiid 145049; discontinuous - phpvsfiid 145050
    2Bt4—61 to 81 centimeters (24.0 to 31.9 inches); 60 percent brown (10YR 5/3) interior gravelly silty clay; 40 percent yellowish brown (10YR 5/6) fine prominent irregular mottles; moderate medium prismatic parts to moderate fine subangular blocky structure; firm; 0.8 very fine roots between peds and 2.0 fine and medium roots between peds; 0.8 very fine low-continuity vesicular pores; 25 percent prominent dark grayish brown (10YR 4/2), moist, clay films on all faces of peds and 30 percent distinct clay films on faces of peds; 15 percent by volume subrounded 2-39-75 millimeter unspecified fragments; very strongly acid, pH 4.8, hellige-truog; gradual wavy boundary. Lab sample # MU050708. All gravels are chert.; continuous - phpvsfiid 148393; discontinuous - phpvsfiid 148392; continuous - phpvsfiid 148393; discontinuous - phpvsfiid 148392
    2Bt5—81 to 102 centimeters (31.9 to 40.2 inches); 90 percent strong brown (7.5YR 5/6) interior clay; 1 percent brown (10YR 5/3) medium prominent irregular and 9 percent yellowish brown (10YR 5/6) fine distinct irregular mottles; weak fine prismatic parts to weak fine angular blocky structure; firm; 0.8 very fine and fine roots between peds; 0.1 very fine low-continuity vesicular pores; 5 percent prominent dark reddish brown (5YR 2/2), moist, manganese or iron-manganese stains on faces of peds and 30 percent distinct clay films on faces of peds; 5 percent by volume subrounded 2-39-75 millimeter unspecified fragments; moderately acid, pH 5.9, hellige-truog; gradual wavy boundary. Lab sample # MU050709. All gravels are chert.; discontinuous - phpvsfiid 148394; discontinuous - phpvsfiid 148395; discontinuous - phpvsfiid 148394; discontinuous - phpvsfiid 148395
    2Bt6—102 to 140 centimeters (40.2 to 55.1 inches); 99 percent yellowish brown (10YR 5/6) interior cobbly clay; 1 percent grayish brown (10YR 5/2) fine prominent irregular mottles; moderate medium angular blocky parts to moderate fine angular blocky structure; firm; 0.8 very fine and fine roots between peds; 25 percent prominent dark reddish brown (5YR 2/2), moist, manganese or iron-manganese stains on faces of peds and 30 percent distinct dark yellowish brown (10YR 4/4), moist, clay films on faces of peds; 5 percent by volume angular 2-39-75 millimeter unspecified fragments and 20 percent by volume subrounded 75-162-250 millimeter dolomite (dolostone) fragments; slightly alkaline, pH 7.4, hellige-truog; gradual wavy boundary. Lab sample # MU050710. All gravels are chert.; continuous - phpvsfiid 148396; discontinuous - phpvsfiid 148397; continuous - phpvsfiid 148396; discontinuous - phpvsfiid 148397
    2Bt7—140 to 165 centimeters (55.1 to 65.0 inches); 80 percent yellowish brown (10YR 5/4) interior clay; 1 percent grayish brown (10YR 5/2) fine distinct irregular and 1 percent brown (10YR 5/3) fine faint irregular and 18 percent yellowish brown (10YR 5/6) fine distinct irregular mottles; moderate medium angular blocky parts to moderate fine angular blocky structure; firm; 0.8 very fine and fine roots between peds; 25 percent distinct dark reddish brown (5YR 2/2), moist, manganese or iron-manganese stains on faces of peds and 30 percent distinct clay films on faces of peds; 5 percent by volume subrounded 75-162-250 millimeter dolomite (dolostone) fragments; slightly alkaline, pH 7.6, hellige-truog; abrupt irregular boundary. Lab sample # MU050711. continuous - phpvsfiid 148398; discontinuous - phpvsfiid 148399; continuous - phpvsfiid 148398; discontinuous - phpvsfiid 148399
    2R—165 centimeters (65.0 inches); bedrock; fragments. Cherty Dolomite in Jefferson City Dolomite Formation of Ordovician age.