IDENTIFIERS

  • Current Taxon Name (Soil Name): Keomah
  • OSD
  • Series Extent
  • User Site ID: 1960IL021002
  • User Pedon ID: 1960IL021002
  • Vegetation Plot ID: 1960IL021002
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 40A1516
  • NCSS Pedon Lab Data NASIS Record ID - 35124
  • 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: 39.5847206
  • Std. Longitude: -89.3708344
  • Datum: WGS84
  • Township: 13N
  • Range: 3W
  • Section: 12
  • PLSS Details: SE 160, SE 40, NW 10, 310 feet south and 200 feet east of center of turn-in road at northwest corner of NW 10.
  • State: Illinois
  • County: IL021—Christian
  • MLRA: 108—Illinois and Iowa Deep Loess and Drift
  • Non-MLRA Soil Survey Area: IL021—Christian County, Illinois

    • PEDON

  • Describers Name: G.O. Walker, C.E. Downey, J.B. Fehrenbacher, F.J. Carlisle, V.G. Link, J.F. Steinkamp, and D.B. Phillips
  • Current Taxonomic Class: Fine, smectitic, mesic Aeric Ochraqualfs
  • Current Taxon Kind: series
  • Pedon Record Orgin: Converted from PDP 3.x
  • Pedon #: 2
  • Correlated Information:
  • Soil Name - Keomah
  • Classificaton Date - 7/23/2007
  • Moisture Class - aquic
  • Moisture Subclass - aeric
  • Sampled As Information:
  • Soil Name - Clarksdale
  • Classificaton Date - 10/14/1960
  • 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: 10/14/1960 (actual site observation date)
  • Surface Cover Properties:
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
    • Vegetation Plot Plants
    Plant Symbol Scientific Name National Vernacular Name Plant Type Group Canopy Cover % Vegetation Stata Level

    TRPR2

    Trifolium pratense

    red clover

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    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 18 centimeters (0.0 to 7.1 inches); dark grayish brown (10YR 4/2) silt loam; weak medium granular structure; friable; 0.5 fine pores; 21 percent fine very dark grayish brown (10YR 3/2) iron concretions; fragments; strongly acid, pH 5.2, pH meter; abrupt smooth boundary. Lab sample # 40A11876
    E—18 to 28 centimeters (7.1 to 11.0 inches); 60 percent grayish brown (10YR 5/2) and 40 percent dark grayish brown (10YR 4/2) silt loam; weak fine and medium platy structure; friable; 0.5 fine pores; 21 percent fine very dark grayish brown (10YR 3/2) iron concretions; fragments; very strongly acid, pH 4.8, pH meter; clear smooth boundary. Lab sample # 40A11877
    Bt1—28 to 41 centimeters (11.0 to 16.1 inches); dark brown (10YR 3/3) silt loam; 1 percent dark yellowish brown (10YR 4/4) fine faint mottles; strong fine and medium angular blocky parts to subangular blocky structure; firm; 3.0 fine pores; grayish brown (10YR 5/2) silt coats and very dark grayish brown (10YR 3/2) organoargillans and ; grayish brown (10YR 5/2) clay depletions and 1 percent fine very dark grayish brown (10YR 4/4) masses of oxidized iron and 3 percent fine (10YR 3/2) iron concretions; fragments; very strongly acid, pH 4.8, pH meter; clear smooth boundary. Lab sample # 40A11878
    Bt2—41 to 51 centimeters (16.1 to 20.1 inches); brown (10YR 4/3) silty clay; 1 percent olive gray (5Y 5/2) fine prominent mottles; moderate medium prismatic parts to moderate fine angular blocky structure; firm; 3.0 fine tubular pores; distinct very dark grayish brown (10YR 3/2) organoargillans on all faces of peds; 1 percent iron concretions and 1 percent olive gray (5Y 5/2) iron depletions; fragments; very strongly acid, pH 4.7, pH meter; clear smooth boundary. Lab sample # 40A11879
    Bt3—51 to 66 centimeters (20.1 to 26.0 inches); olive (5Y 5/3) silty clay; 1 percent yellowish brown (10YR 5/8) coarse prominent and 21 percent dark yellowish brown (10YR 4/4) medium prominent mottles; strong fine and medium prismatic parts to moderate fine and medium angular blocky structure; firm; prominent black (10YR 2/1) organoargillans on vertical faces of peds and distinct very dark grayish brown (10YR 3/2) organoargillans on horizontal faces of peds and distinct very dark gray (10YR 3/1) organoargillans on horizontal faces of peds; fine very dark grayish brown (10YR 3/2) iron concretions and fine very dark brown (10YR 2/2) iron concretions and fine yellowish brown (10YR 5/8) masses of oxidized iron and fine dark yellowish brown (10YR 4/4) masses of oxidized iron; fragments; strongly acid, pH 5.4, pH meter; gradual smooth boundary. Lab sample # 40A11880. This horizon appears the darkest; several 1/8-inch cracks extending through B that appear same as all other prism faces.
    Bt4—66 to 86 centimeters (26.0 to 33.9 inches); olive (5Y 5/3) silty clay loam; 3 percent yellowish brown (10YR 5/8) coarse prominent and 21 percent dark yellowish brown (10YR 4/4) medium prominent mottles; moderate and strong medium prismatic parts to weak coarse angular blocky structure; firm; 21.0 fine pores; distinct black (10YR 2/1) organoargillans on vertical faces of peds and distinct very dark gray (10YR 3/1) organoargillans on vertical faces of peds and faint very dark grayish brown (10YR 3/2) organoargillans on horizontal faces of peds; 3 percent fine very dark grayish brown (10YR 3/2) iron concretions and 3 percent fine yellowish brown (10YR 5/8) masses of oxidized iron and 21 percent fine dark yellowish brown (10YR 4/4) masses of oxidized iron; fragments; neutral, pH 6.7, pH meter; clear wavy boundary. Lab sample # 40A11881
    Bt5—86 to 112 centimeters (33.9 to 44.1 inches); olive (5Y 5/3) silty clay loam; strong brown (7.5YR 5/8) and 21 percent yellowish brown (10YR 5/8) medium and coarse prominent mottles; weak coarse prismatic structure; firm; 21.0 fine pores; distinct black (10YR 2/1) organoargillans on faces of peds and distinct very dark grayish brown (10YR 3/2) organoargillans on faces of peds; 3 percent fine very dark grayish brown (10YR 3/2) iron concretions and 21 percent fine yellowish brown (10YR 5/8) and strong brown (7.5YR 5/8) masses of oxidized iron; fragments; slightly alkaline, pH 7.5, pH meter; gradual smooth boundary. Lab sample # 40A11882
    Btg—112 to 140 centimeters (44.1 to 55.1 inches); olive gray (5Y 5/2) and olive (5Y 5/3) silt loam; 3 percent strong brown (7.5YR 5/8) medium prominent and 21 percent yellowish brown (10YR 5/8) coarse prominent mottles; very coarse prismatic parts to massive; friable; 3.0 fine pores; distinct very dark gray (10YR 3/1) organoargillans and 30 percent distinct very dark grayish brown (10YR 3/2) organoargillans; 3 percent very dark grayish brown (10YR 3/2) iron concretions and 3 percent strong brown (7.5YR 5/8) masses of oxidized iron and 21 percent yellowish brown (10YR 5/8) masses of oxidized iron; fragments; moderately alkaline, pH 7.9, pH meter; clear smooth boundary. Lab sample # 40A11883
    Cg—140 to 165 centimeters (55.1 to 65.0 inches); gray (5Y 5/1) and olive gray (5Y 5/2) silt loam; 3 percent strong brown (7.5YR 5/8) coarse prominent mottles; massive; friable; 0.5 fine pores; very dark gray (10YR 3/1) organic stains in root channels and/or pores and very dark grayish brown (10YR 3/2) organic stains in root channels and/or pores; fine very dark grayish brown (10YR 3/2) iron concretions and fine strong brown (7.5YR 5/8) masses of oxidized iron; fragments; slightly alkaline, pH 7.7, pH meter. Lab sample # 40A11884