IDENTIFIERS

  • Current Taxon Name (Soil Name): Gunlock
  • OSD
  • Series Extent
  • User Site ID: 1995MO131009M
  • User Pedon ID: 1995MO131009
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - MCL
  • Lab Pedon # - M9513104
  • 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: 38.3342847
  • Std. Longitude: -92.3427748
  • Datum: WGS84
  • Township: T41N
  • Range: R13W
  • Section: 3
  • PLSS Details: NE 1/4
  • State: Missouri
  • County: MO131—Miller
  • MLRA: 116B—Springfield Plain

    • PEDON

  • Describers Name: DEV, TOK, DWW
  • Current Taxonomic Class: Fine-silty, mixed Oxyaquic Paleudalfs
  • 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 Paleudalfs
  • Taxon Kind - series
  • PSC - 18 to 68 cm.
  • Classificaton Date - 5/18/1995
  • Moisture Class - udic
  • Dynamic Soil Properties:
  • Erosion Class - 1
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: loess and/or residuum weathered from cherty limestone
  • Landscape: plateau
  • Landform: ridge
  • Geomorphic Component Hills: interfluve
  • Hill Slope Profile: shoulder
  • Slope Shape Across: convex
  • Slope Shape Down: convex
  • Runoff: medium
  • Drainage Class: moderately well
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 5/18/1995 (actual site observation date)
  • Air Photo ID: 6D
  • 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
    • 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

    4

    —

    —

    229

    —

    20

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    Ap—0 to 18 centimeters (0.0 to 7.1 inches); brown (10YR 4/3) silt loam; weak fine granular structure; very friable; 15.0 fine roots throughout; 10 percent fine spherical weakly coherent cemented black (10YR 2/1) iron-manganese concretions throughout; fragments; very strongly acid, pH 4.7, hellige-truog; abrupt smooth boundary. Lab sample # MU017530. Lower part has some mixing with B. Zone of platiness at 4-5" from tillage
    Bt1—18 to 36 centimeters (7.1 to 14.2 inches); brown (7.5YR 5/4) silt loam; weak fine subangular blocky structure; very friable; 5.0 fine roots throughout; 5.0 medium vesicular pores; 5 percent distinct light yellowish brown (10YR 6/4) silt coats on vertical faces of peds and 10 percent faint brown (7.5YR 5/4) clay films on all faces of peds; 3 percent fine spherical weakly coherent cemented black (10YR 2/1) iron-manganese concretions throughout; 1 percent by volume subangular 2-39-75 millimeter limestone, cherty fragments; strongly acid, pH 5.1, hellige-truog; clear smooth boundary. Lab sample # MU017531. Some silt coats are associated with roots.; patchy - phpvsfiid 126502; continuous - phpvsfiid 126503; patchy - phpvsfiid 126502; continuous - phpvsfiid 126503
    Bt2—36 to 53 centimeters (14.2 to 20.9 inches); brown (7.5YR 4/4) silty clay loam; weak fine subangular blocky structure; friable; 1.0 fine roots throughout; 15 percent faint brown (7.5YR 4/4) clay films on vertical faces of peds and 20 percent distinct light yellowish brown (10YR 6/4) clay films on all faces of peds; 1 percent by volume subangular 2-39-75 millimeter limestone, cherty fragments; very strongly acid, pH 5.0, hellige-truog; clear smooth boundary. Lab sample # MU017532. discontinuous - phpvsfiid 126504; continuous - phpvsfiid 126505; discontinuous - phpvsfiid 126504; continuous - phpvsfiid 126505
    Bt3—53 to 76 centimeters (20.9 to 29.9 inches); brown (7.5YR 4/4) silty clay loam; weak fine subangular blocky structure; friable; 1.0 fine roots throughout; 5.0 very fine and fine vesicular and 5.0 very fine tubular pores; 1 percent prominent black (10YR 2/1) manganese or iron-manganese stains on vertical faces of peds and 15 percent faint brown (7.5YR 4/4) clay films on vertical faces of peds and 30 percent prominent grayish brown (10YR 5/2) clay films on all faces of peds; 7 percent medium irregular noncoherent cemented dark reddish brown (5YR 3/4) masses of oxidized iron between peds; 2 percent by volume subangular 2-39-75 millimeter limestone, cherty fragments; very strongly acid, pH 4.9, hellige-truog; clear smooth boundary. Lab sample # MU017533. Lower part of horizon picks up slight brittleness.; discontinuous - phpvsfiid 126506; continuous - phpvsfiid 126507; patchy - phpvsfiid 126508; discontinuous - phpvsfiid 126506; continuous - phpvsfiid 126507; patchy - phpvsfiid 126508
    2Btx1—76 to 99 centimeters (29.9 to 39.0 inches); yellowish brown (10YR 5/4) silt loam; weak medium prismatic parts to weak fine and medium subangular blocky structure; firm; brittle; 2.0 fine roots between peds; 5.0 very fine and fine vesicular pores; 5 percent distinct dark yellowish brown (10YR 4/4) clay films on faces of peds and in pores and 25 percent distinct light brownish gray (10YR 6/2) clay films on all faces of peds; 1 percent fine spherical noncoherent cemented black (10YR 2/1) masses of dark accumulation between peds; 10 percent by volume angular 2-39-75 millimeter limestone, cherty fragments; very strongly acid, pH 4.9, hellige-truog; gradual smooth boundary. Lab sample # MU017534. Most gravel in lower part of horizon. About 30 percent brittleness; continuous - phpvsfiid 126509; patchy - phpvsfiid 126510; continuous - phpvsfiid 126509; patchy - phpvsfiid 126510
    2Btx2—99 to 127 centimeters (39.0 to 50.0 inches); brown (7.5YR 5/4) very gravelly silt loam; weak coarse prismatic parts to weak fine and medium subangular blocky structure; firm; brittle; 1.0 fine roots between peds; 1 percent prominent black (10YR 2/1) manganese or iron-manganese stains in root channels and/or pores and 10 percent prominent light brownish gray (10YR 6/2) clay films on all faces of peds; 50 percent by volume angular 2-39-75 millimeter limestone, cherty fragments; very strongly acid, pH 5.0, hellige-truog; gradual smooth boundary. Lab sample # MU017535. Gray seams between primary structure and partially extends into primary peds along secondary structural planes. About 30 percent brittleness.; continuous - phpvsfiid 126511; continuous - phpvsfiid 126512; continuous - phpvsfiid 126511; continuous - phpvsfiid 126512
    3Bt4—127 to 183 centimeters (50.0 to 72.0 inches); yellowish red (5YR 4/6) extremely gravelly clay loam; moderate fine subangular blocky structure; firm; 2 percent prominent black (10YR 2/1) manganese or iron-manganese stains on faces of peds and 20 percent distinct dark reddish brown (5YR 3/4) clay films on all faces of peds; 20 percent fine and medium irregular noncoherent cemented dark red (2.5YR 3/6) masses of oxidized iron throughout; 1 percent by volume angular 2-39-75 millimeter sandstone, unspecified fragments and 15 percent by volume angular 75-162-250 millimeter limestone, cherty fragments and 55 percent by volume angular 2-39-75 millimeter limestone, cherty fragments; moderately acid, pH 5.6, hellige-truog; clear wavy boundary. Lab sample # MU017536. 3 chroma seams of preferential flow (7-8" apart) meander through cherty soil generally vertically. Most cobbles are oriented in upper part of horizon.; continuous - phpvsfiid 126513; patchy - phpvsfiid 126514; continuous - phpvsfiid 126513; patchy - phpvsfiid 126514
    3Bt5—183 to 203 centimeters (72.0 to 79.9 inches); dark red (2.5YR 3/6) very gravelly clay; moderate fine subangular blocky structure; firm; 2 percent distinct black (10YR 2/1) manganese or iron-manganese stains on faces of peds and 20 percent distinct dark reddish brown (2.5YR 3/4) clay films on faces of peds; 5 percent by volume angular 2-39-75 millimeter sandstone, unspecified fragments and 40 percent by volume angular 2-39-75 millimeter limestone, cherty fragments; strongly acid, pH 5.4, hellige-truog. Lab sample # MU017537. Cherty and clayey material oriented in sort of alternating horizontal layers.; continuous - phpvsfiid 126515; patchy - phpvsfiid 126516; continuous - phpvsfiid 126515; patchy - phpvsfiid 126516