IDENTIFIERS

  • Current Taxon Name (Soil Name): Clarksdale
  • OSD
  • Series Extent
  • User Site ID: S1960IL117002
  • User Pedon ID: S1960IL117002
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 40A1781
  • NCSS Pedon Lab Data NASIS Record ID - 35939
  • Print Date: 4/27/2025

    • 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: 39.2952766
  • Std. Longitude: -89.7649994
  • Datum: WGS84
  • Township: 10N
  • Range: 6W
  • Section: 21
  • PLSS Details: SE 160, SW 40, SE 10, 565 feet north from center of road and 42 feet west of southeast corner of SE 10.
  • State: Illinois
  • County: IL117—Macoupin
  • Non-MLRA Soil Survey Area: IL117—Macoupin County, Illinois

    • PEDON

  • Describers Name: F.J. Carlisle, J.B. Fehrenbacher, C.E. Downey, G.O. Walker, D.B. Phillips, and J.F. Steinkamp
  • Pedon Record Orgin: Converted from PDP 3.x
  • Pedon #: 2
  • Sampled As Information:
  • Soil Name - Clarksdale
  • Classificaton Date - 10/10/1960
  • Moisture Class - udic
  • Dynamic Soil Properties:
  • Erosion Class - 0
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Landscape: till plain
  • Drainage Class: somewhat poorly
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 10/10/1960 (actual site observation date)
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - crop cover
  • Site Obs. Cover Kind 2 - close-grown crop
  • 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

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    Ap—0 to 20 centimeters (0.0 to 7.9 inches); very dark gray (10YR 3/1) and very dark grayish brown (10YR 3/2), grayish brown (10YR 5/2), dry; silt loam; massive parts to weak medium granular; friable; 0.5 fine pores; 3 percent fine very dark grayish brown (10YR 3/2) iron concretions; fragments; slightly acid, pH 6.5, hellige-truog; abrupt smooth boundary. Lab sample # 40A14182
    A21—20 to 30 centimeters (7.9 to 11.8 inches); dark gray (10YR 4/1) and 25 percent grayish brown (10YR 5/2) silt loam; gray (10YR 6/1) fine faint and light gray (10YR 7/1) and brown (10YR 5/3) and pale brown (10YR 6/3) mottles; moderate medium platy parts to weak fine angular blocky structure; friable; 21.0 fine pores; 3 percent fine noncoherent cemented very dark grayish brown (10YR 3/2) iron concretions and 3 percent fine very dark brown (10YR 2/2) iron concretions; fragments; moderately acid, pH 5.8, hellige-truog; clear smooth boundary. Lab sample # 40A14183
    A22—30 to 43 centimeters (11.8 to 16.9 inches); 50 percent grayish brown (10YR 5/2) and 25 percent gray (10YR 6/1) and 25 percent dark grayish brown (10YR 4/2) silt loam; gray (10YR 6/1) fine faint and light gray (10YR 7/1) and brown (10YR 5/3) and pale brown (10YR 6/3) and 1 percent yellowish brown (10YR 5/4) fine distinct mottles; weak medium platy, and weak thick platy parts to moderate fine angular blocky structure; friable; 21.0 fine pores; 1 percent very dark gray (10YR 3/1) clay films and 1 percent very dark grayish brown (10YR 3/2) clay films; 3 percent fine noncoherent cemented very dark grayish brown (10YR 3/2) iron concretions and 3 percent fine noncoherent cemented very dark brown (10YR 2/2) iron concretions; 1 percent very dark grayish brown (10YR 3/2) worm casts; fragments; strongly acid, pH 5.5, hellige-truog; clear smooth boundary. Lab sample # 40A14184
    B&A2—43 to 51 centimeters (16.9 to 20.1 inches); grayish brown (10YR 5/2) and brown (10YR 5/3), light brownish gray (10YR 6/2), dry; silty clay loam; 1 percent yellowish brown (10YR 5/8) fine distinct mottles; moderate and strong fine and medium angular blocky, and weak fine and medium prismatic structure; friable; 21.0 fine tubular pores; distinct gray (10YR 5/1) silt coats and distinct gray (10YR 6/1) silt coats and 10 percent dark grayish brown (10YR 4/2) clay films and 10 percent very dark grayish brown (10YR 3/2) clay films and 10 percent very dark gray (10YR 3/1) clay films; 21 percent fine and medium very dark grayish brown (10YR 3/2) iron concretions and 21 percent fine and medium very dark brown (10YR 2/2) iron concretions; fragments; strongly acid, pH 5.5, hellige-truog; clear smooth boundary. Lab sample # 40A14185
    B21—51 to 66 centimeters (20.1 to 26.0 inches); grayish brown (10YR 5/2) silty clay loam; 1 percent yellowish brown (10YR 5/8) fine distinct and 3 percent yellowish brown (10YR 5/4) fine distinct mottles; strong medium prismatic parts to strong medium angular blocky, and moderate fine and medium angular blocky structure; firm; 21.0 fine pores; prominent very dark gray (10YR 3/1) clay films and 10 percent dark gray (10YR 4/1), dry, clay films; 21 percent fine and medium dark brown (10YR 3/3) iron concretions and 21 percent fine and medium very dark brown (10YR 2/2) iron concretions; fragments; moderately acid, pH 5.8, hellige-truog; clear smooth boundary. Lab sample # 40A14186
    B22—66 to 81 centimeters (26.0 to 31.9 inches); olive gray (5Y 5/2) and olive (5Y 5/3) silty clay loam; 1 percent yellowish brown (10YR 5/8) medium prominent and 21 percent dark yellowish brown (10YR 4/4) medium prominent mottles; moderate and strong medium prismatic parts to moderate and strong coarse angular blocky, and weak medium angular blocky structure; firm; 3.0 fine tubular pores; 10 percent prominent dark gray (10YR 4/1), dry, clay films on faces of peds and 10 percent prominent very dark gray (10YR 3/1), moist, clay films on faces of peds; 3 percent fine very dark grayish brown (10YR 3/2) iron concretions and 3 percent fine very dark brown (10YR 2/2) iron concretions; fragments; moderately acid, pH 6.0, hellige-truog; gradual smooth boundary. Lab sample # 40A14187
    B23—81 to 109 centimeters (31.9 to 42.9 inches); olive gray (5Y 5/2) silty clay loam; yellowish brown (10YR 5/8) and 21 percent dark yellowish brown (10YR 4/4) medium prominent mottles; weak and moderate medium prismatic parts to weak coarse angular blocky structure; firm; 3.0 fine pores; dark gray (10YR 4/1) clay films and very dark gray (10YR 3/1) clay films; fragments; moderately acid, pH 6.0, hellige-truog; gradual smooth boundary. Lab sample # 40A14188
    B3—109 to 140 centimeters (42.9 to 55.1 inches); olive gray (5Y 5/2) and olive (5Y 5/3) silty clay loam; 3 percent yellowish brown (10YR 5/8) medium prominent and 21 percent dark yellowish brown (10YR 4/4) medium prominent mottles; weak coarse prismatic structure; firm; 21.0 fine pores; 10 percent dark gray (10YR 4/1) clay films on faces of peds and 10 percent very dark gray (10YR 3/1) clay films on faces of peds; 3 percent fine very dark grayish brown (10YR 3/2) iron concretions and 3 percent fine very dark brown (10YR 2/2) iron concretions; fragments; slightly acid, pH 6.2, hellige-truog; gradual smooth boundary. Lab sample # 40A14189
    C1—140 to 168 centimeters (55.1 to 66.1 inches); gray (10YR 6/1) silt loam, sand; 3 percent strong brown (7.5YR 5/8) coarse prominent and 21 percent dark yellowish brown (10YR 4/4) medium distinct mottles; massive; friable; 21.0 fine pores; dark gray (10YR 4/1) clay films; 3 percent fine very dark grayish brown (10YR 3/2) iron concretions; fragments; slightly acid, pH 6.2, hellige-truog; clear wavy boundary. Lab sample # 40A14190
    II—168 centimeters (66.1 inches); fragments. Lab sample # 40A14191. Not sampled.