IDENTIFIERS

  • Current Taxon Name (Soil Name): Clarksdale
  • OSD
  • Series Extent
  • User Site ID: S1986IL187101
  • User Pedon ID: S1986IL187101
  • Lab Information:
  • Certified Lab Pedon Description - yes
  • Lab Source ID - IL SCL
  • Lab Pedon # - 86IL187101
  • NCSS Pedon Lab Data NASIS Record ID - 22010
  • Print Date: 11/26/2024

    • 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: 40.9874182
  • Std. Longitude: -90.5162763
  • Datum: WGS84
  • Township: 12N
  • Range: 1W
  • Section: 33
  • PLSS Details: 100 feet east and 1,500 feet south of northwest corner
  • Map Unit: 257A—Clarksdale silt loam, 0 to 2 percent slopes
  • Country: US—United States
  • State: Illinois
  • County: IL187—Warren
  • MLRA: 108—Illinois and Iowa Deep Loess and Drift
  • Regional Office: NC—North Central
  • MLRA Soil Survey Area: NC-SPI—Springfield, Illinois
  • Non-MLRA Soil Survey Area: IL187—Warren County, Illinois
  • 7.5 Minute USGS Quad: 40090-H5—Cameron, Illinois

    • PEDON

  • Describers Name: Michael J. Walczynski
  • Current Taxonomic Class: Fine, smectitic, mesic Udollic Endoaqualfs
  • Current Taxon Kind: series
  • Pedon Type: taxadjunct to the series
  • Pedon Purpose: soil survey inventory
  • Pedon Record Orgin: PedonPC
  • Pedon #: 101
  • Correlated Information:
  • Soil Name - Clarksdale
  • PSC - 41 to 91 cm.
  • Classificaton Date - 8/3/2015
  • Soil Taxonomic Edition - twelfth edition
  • Moisture Class - udic
  • Moisture Subclass - aquic
  • Sampled As Information:
  • Soil Name - Clarksdale
  • PSC - 41 to 91 cm.
  • Classificaton Date - 10/1/1986
  • Dynamic Soil Properties:
  • Erosion Class - 1
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: Fine-silty taxadjunct devoped in Peoria Loess
  • Landscape: upland
  • Runoff: low
  • Drainage Class: somewhat poorly
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 10/1/1986 (actual site observation date)
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - crop cover
  • Site Obs. Cover Kind 2 - hayland
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
    • Pedon Horizon Lab Results - 1
    Horizon Top Depth Bottom Depth Sample ID Data Collector Total Clay CaCO3 Clay Total Silt Fine Silt Co. Silt Total Sand Total Sand Method VC Sand Co. Sand Med. Sand Fine Sand VF Sand VF Sand Method Texture Class - Field Lab Rubbed Fiber Unrubbed Fiber pH H2O
    cm cm % % % % % % % % % % % % %

    Ap

    E

    BE

    Bt

    Btg1

    Btg2

    Btg3

    Cg

    0

    18

    30

    41

    61

    81

    112

    127

    18

    30

    41

    61

    81

    112

    127

    152

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    Pedon Horizon Lab Results - 2
    Horizon Top Depth Bottom Depth Sample ID pH CaCl2 pH NaF pH Ox Delta pH LL PL PI Atter. Samp. Cond. COLE Pot. Acidity Ca + Mg - Meh 2 K Ca + Mg - Sat. Paste KCl Extract. Acidity Base Sat. - Meh 2 CEC-7 CEC-8.2
    cm cm % % % cm/cm meq/100g cmol(+)/kg cmol(+)/kg mmol(+)/l cmol(+)/kg % cmol(+)/kg cmol(+)/kg

    Ap

    E

    BE

    Bt

    Btg1

    Btg2

    Btg3

    Cg

    0

    18

    30

    41

    61

    81

    112

    127

    18

    30

    41

    61

    81

    112

    127

    152

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    Pedon Horizon Lab Results - 3
    Horizon Top Depth Bottom Depth Sample ID ECEC Phosphate P NO3-N EC EC Method EC 1:5 by volume CaCO3 Equiv. Equiv. Gypsum Na SAR Gypsum Req. Humic Color Fulvic Color Humic + Fulvic Color Al PI Pyro. Hue PyrO. Value Pyro. Chroma
    cm cm cmol(+)/kg mg/kg mg/kg dS/m dS/m % % mmol(+)/l % L-pcu/g L-pcu/g L-pcu/g %

    Ap

    E

    BE

    Bt

    Btg1

    Btg2

    Btg3

    Cg

    0

    18

    30

    41

    61

    81

    112

    127

    18

    30

    41

    61

    81

    112

    127

    152

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    Pedon Diagnostic Features
    Feature Kind Feature Depth L-H Feature Thickness L-RV-H
    cm

    ochric epipedon

    argillic horizon

    0—41

    41—112

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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

    1

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    Ap—0 to 18 centimeters (0.0 to 7.1 inches); very dark gray (10YR 3/1), brown (10YR 5/3), dry; silt loam; moderate fine granular structure; friable; common (10.0) very fine roots between peds; fragments; neutral, pH 6.8, lamotte-morgan; clear smooth boundary. Lab sample # IL33198
    E—18 to 30 centimeters (7.1 to 11.8 inches); brown (10YR 4/3) and very dark gray (10YR 3/1) silt loam; moderate thick platy parts to moderate very fine subangular blocky structure; friable; common (3.0) very fine roots between peds; 25 percent prominent cylindrical light gray (10YR 7/2), dry, clay depletions with sharp boundaries on faces of peds; fragments; neutral, pH 6.8, lamotte-morgan; abrupt smooth boundary. Lab sample # IL33199
    BE—30 to 41 centimeters (11.8 to 16.1 inches); brown (10YR 4/3) silty clay loam; and mottles; weak thick platy, and moderate very fine subangular blocky structure; friable; common (3.0) very fine roots between peds; 52 percent distinct very dark grayish brown (10YR 3/2), moist, organoargillans on all faces of peds; 1 percent fine distinct irregular dark brown (7.5YR 3/3), moist, iron-manganese masses in matrix and 1 percent fine distinct irregular yellowish brown (10YR 5/6), moist, masses of oxidized iron and 10 percent fine faint irregular grayish brown (10YR 5/2), moist, iron depletions; fragments; slightly acid, pH 6.1, lamotte-morgan; clear smooth boundary. Lab sample # IL33200
    Bt—41 to 61 centimeters (16.1 to 24.0 inches); brown (10YR 5/3) silty clay loam; and mottles; weak medium prismatic parts to moderate medium subangular blocky structure; friable; few (3.0) very fine roots between peds; 52 percent distinct dark brown (10YR 3/3), moist, organoargillans on all faces of peds; 1 percent fine distinct irregular dark brown (7.5YR 3/3), moist, iron-manganese masses in matrix and 10 percent fine faint irregular light brownish gray (10YR 6/2), moist, iron depletions and 10 percent fine distinct irregular yellowish brown (10YR 5/6), moist, masses of oxidized iron; fragments; moderately acid, pH 6.0, lamotte-morgan; clear smooth boundary. Lab sample # IL33201, IL33202. Horizon split for sampling: IL33202 51 to 61 cm, IL33201 41 to 51 cm.
    Btg1—61 to 81 centimeters (24.0 to 31.9 inches); light brownish gray (2.5Y 6/2) silty clay loam; mottles; weak medium prismatic parts to moderate medium subangular blocky structure; friable; few (3.0) very fine roots between peds; 25 percent distinct brown (10YR 4/3), moist, clay films on all faces of peds; 1 percent medium prominent irregular dark brown (7.5YR 3/3), moist, iron-manganese masses in matrix and 10 percent medium prominent irregular yellowish brown (10YR 5/6), moist, masses of oxidized iron; fragments; slightly acid, pH 6.4, lamotte-morgan; gradual smooth boundary. Lab sample # IL33203, IL33204. Horizon split for sampling: IL33204 71 to 81 cm, IL33203 61 to 71 cm.
    Btg2—81 to 112 centimeters (31.9 to 44.1 inches); grayish brown (2.5Y 5/2) silty clay loam; mottles; weak coarse prismatic parts to moderate coarse subangular blocky structure; friable; few (0.6) very fine roots between peds; 5 percent distinct dark grayish brown (10YR 4/2), moist, clay films on surfaces along pores and 25 percent distinct clay films on all faces of peds; 1 percent medium prominent irregular dark brown (7.5YR 3/3), moist, iron-manganese masses in matrix and 10 percent medium prominent irregular yellowish brown (10YR 5/6), moist, masses of oxidized iron; fragments; neutral, pH 6.6, lamotte-morgan; gradual smooth boundary. Lab sample # IL33205, IL33206, IL33207. Horizon split for sampling: IL33207 102 to 112 cm, IL33206 91 to 102 cm, IL33205 81 to 91 cm.
    Btg3—112 to 127 centimeters (44.1 to 50.0 inches); grayish brown (2.5Y 5/2) silty clay loam; mottles; weak medium subangular blocky, and weak coarse subangular blocky structure; friable; few (0.6) very fine roots between peds; 5 percent distinct dark grayish brown (10YR 4/2), moist, clay films on surfaces along pores and 5 percent distinct grayish brown (10YR 5/2), moist, clay films on all faces of peds; 1 percent medium prominent irregular dark brown (7.5YR 3/3), moist, iron-manganese masses in cracks and 10 percent medium prominent irregular yellowish brown (10YR 5/6), moist, masses of oxidized iron; fragments; neutral, pH 6.7, lamotte-morgan; gradual wavy boundary.
    Cg—127 to 152 centimeters (50.0 to 59.8 inches); light brownish gray (2.5Y 6/2) silt loam; mottles; massive; friable; few (0.8) very fine roots between peds; 10 percent prominent very dark gray (2.5Y 3/1), moist, organoargillans on surfaces along pores; 1 percent medium prominent irregular dark brown (7.5YR 3/3), moist, iron-manganese masses in matrix and 10 percent medium prominent irregular yellowish brown (10YR 5/6), moist, masses of oxidized iron; fragments; slightly alkaline, pH 7.5, lamotte-morgan. Lab sample # IL33208. continuous - phpvsfiid 1414246; continuous - phpvsfiid 1414246