IDENTIFIERS

  • Current Taxon Name (Soil Name): Clarksville
  • OSD
  • Series Extent
  • User Site ID: S1959MO065001
  • User Pedon ID: S1959MO065001
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 40A2712
  • Print Date: 3/31/2025

    • 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: 37.4908981
  • Std. Longitude: -91.2623520
  • Datum: WGS84
  • Township: T32N
  • Range: R3W
  • Section: 3
  • PLSS Details: Middle of east boundary quarter of southwest quarter
  • Location Description: on ridge southeast of weather station, Sinking Experimental Forest
  • State: Missouri
  • County: MO065—Dent
  • MLRA: 116A—Ozark Highland
  • Non-MLRA Soil Survey Area: MO065—Dent County, Missouri
  • 7.5 Minute USGS Quad: 37091-D3—Loggers Lake, Missouri

    • PEDON

  • Describers Name: J. S. Allen, R. L. Juve, John Van Dine, and F. J. Carlisle
  • Pedon Record Orgin: Converted from PDP 3.x
  • Pedon #: 1
  • Sampled As Information:
  • Soil Name - Clarksville
  • Classificaton Date - 10/6/1959
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: residuum weathered from limestone and sandstone
  • Landform: ridge
  • Hill Slope Profile: shoulder
  • Drainage Class: well
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 10/6/1959 (actual site observation date)
  • Air Photo ID: BLG2p-161
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - tree cover
  • Site Obs. Cover Kind 2 - intermixed conifers and hardwoods
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
    • 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

    18

    —

    —

    —

    —

    203

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    —

    —

    —

    —

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    Aoo—0 to 2 centimeters (0.0 to 0.8 inches); fragments. Lab sample # 40A21230. Loose pine and oak leaves.
    Ao—2 to 3 centimeters (0.8 to 1.2 inches); black (10YR 2/1); 21.0 fine roots; fragments. Lab sample # 40A21231. partially decomposed leaves, twigs, and roots. Living roots bind this layer into a mat.
    A1—3 to 6 centimeters (1.2 to 2.4 inches); dark gray (10YR 4/1), light gray (10YR 7/2), dry; loam; weak fine and medium granular structure; friable; fragments; clear boundary. Lab sample # 40A21232. estimated 15 percent angular sandstone and chert fragments greater than 3/4 inch in diameter.
    A21—6 to 13 centimeters (2.4 to 5.1 inches); dark grayish brown (10YR 4/2), very pale brown (10YR 7/3) and light brownish gray (10YR 6/2), dry; loam; weak fine and medium granular structure; friable, nonsticky; fragments; very strongly acid, pH 5.0, bromcresol green; clear boundary. Lab sample # 40A21233. estimated 15 percent angular sandstone and chert fragments greater than 3/4 inch in diameter.
    A22—13 to 31 centimeters (5.1 to 12.2 inches); brown (10YR 5/3), very pale brown (10YR 7/3), dry; loam; weak fine and medium granular structure; friable, nonsticky; fragments; very strongly acid, pH 5.0, bromcresol green; gradual boundary. Lab sample # 40A21234. estimated 15 percent sandstone rock fragments greater than 3/4 inch in diameter.
    A23—31 to 49 centimeters (12.2 to 19.3 inches); brown (10YR 5/3), very pale brown (10YR 7/3), dry; loam; friable; fragments; very strongly acid, pH 4.8, bromcresol green; clear boundary. Lab sample # 40A21235. no evident aggregation in moist condition; estimated that sandstone rock fragments between 3/4 inch and 18 inches comprise 50 to 60 percent of horizon.
    B11—49 to 69 centimeters (19.3 to 27.2 inches); yellowish brown (10YR 5/4) loam; reddish brown (5YR 4/4) fine and yellowish red (5YR 4/6) mottles; friable, slightly sticky; fragments; very strongly acid, pH 4.6, bromcresol green; gradual boundary. Lab sample # 40A21236. no evident aggregation when moist; mottles appear to be clay films lining tubular pores and on sand particles; estimated sandstone fragments between 3/4 inch and 18 inches comprise 50 to 60 percent of horizon.
    B12—69 to 97 centimeters (27.2 to 38.2 inches); very pale brown (10YR 7/4) loam; weak medium and coarse angular blocky structure; firm; reddish brown (5YR 4/4) clay films; fragments; very strongly acid, pH 4.6, bromcresol green; clear boundary. Lab sample # 40A21237. sandstone fragments between 3/4 inch and 18 inches estimated to comprise 70 percent of horizon.; continuous - phpvsfiid 176773; continuous - phpvsfiid 176773
    B21—97 to 135 centimeters (38.2 to 53.1 inches); loam, sandy loam; fragments; very strongly acid, pH 4.6, bromcresol green; clear boundary. Lab sample # 40A21238. Sandstone fragments up to 18 inches diameter comprise about 85 percent of this horizon. The sandstone fragments have yellowish red (5YR 4/8) interior color with a red (2.5YR 4/8) rind. Earthy material between rock fragments is reddish brown (5YR 5/4) clay loam; this horizon contained a pocket about 8 inches in diameter of yellowish red (5YR 4/6) silty clay which was sampled separately (Lincoln Lab. No. 12112, now 40A21241). Pore surfaces in the silty clay pocket were lined with 5YR 5/4 clay films.
    B2u—135 to 150 centimeters (53.1 to 59.1 inches); silty clay; yellowish red (5YR 4/6) and light yellowish brown (10YR 6/4) and red (2.5YR 4/8) mottles; fragments. Lab sample # 40A21239. chert fragments are more angular and smaller than the sandstone fragments in horizons above and below.
    B23—150 to 160 centimeters (59.1 to 63.0 inches); loam, sandy loam; fragments. Lab sample # 40A21240. Sandstone fragments up to 18 in diameter comprise about 85 percent of this horizon. The sandstone fragments have yellowish red (5YR 4/8) interior color with a red (2.5YR 4/8) rind. Earthy material between rock fragments is reddish brown (5YR 5/4) clay loam. Not sampled.