IDENTIFIERS

  • Current Taxon Name (Soil Name): Clarksdale
  • OSD
  • Series Extent
  • User Site ID: S1986IL187105
  • User Pedon ID: S1986IL187105
  • Lab Information:
  • Certified Lab Pedon Description - yes
  • Lab Source ID - IL SCL
  • Lab Pedon # - 86IL187105
  • NCSS Pedon Lab Data NASIS Record ID - 22013
  • 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: 41.0023900
  • Std. Longitude: -90.4620500
  • Datum: WGS84
  • Township: 12N
  • Range: 1W
  • Section: 26
  • PLSS Details: 660 feet west and 1460 feet south of the NE corner
  • Location Description: Located about 1/2 mile south of Henderson Creek
  • 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: 41090-A4—North Henderson, Illinois

    • PEDON

  • Describers Name: JAD MAS
  • Current Taxonomic Class: Fine, smectitic, mesic Udollic Endoaqualfs
  • Current Taxon Kind: series
  • Pedon Type: map unit inclusion
  • Pedon Purpose: soil survey inventory
  • Pedon Record Orgin: PedonPC
  • Pedon #: 105
  • Correlated Information:
  • Soil Name - Clarksdale
  • PSC - 41 to 91 cm.
  • Classificaton Date - 8/4/2015
  • 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: loess
  • Landscape: till plain
  • Landform: ground moraine
  • Slope Shape Across: linear
  • Slope Shape Down: linear
  • Drainage Class: somewhat poorly
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 3/29/2011 (entry creation date)
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - crop cover
  • Site Obs. Cover Kind 2 - pastureland, tame
  • 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

    EB

    Bt

    Btg1

    Btg2

    BCg

    0

    20

    33

    41

    61

    86

    112

    20

    33

    41

    61

    86

    112

    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

    EB

    Bt

    Btg1

    Btg2

    BCg

    0

    20

    33

    41

    61

    86

    112

    20

    33

    41

    61

    86

    112

    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

    EB

    Bt

    Btg1

    Btg2

    BCg

    0

    20

    33

    41

    61

    86

    112

    20

    33

    41

    61

    86

    112

    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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    825

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    170

    11

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    Ap—0 to 20 centimeters (0.0 to 7.9 inches); very dark grayish brown (10YR 3/2), grayish brown (10YR 5/2), dry; silt loam; moderate medium granular structure; friable; fragments; neutral, pH 7.3, lamotte-morgan; abrupt smooth boundary. Lab sample # IL33229
    E—20 to 33 centimeters (7.9 to 13.0 inches); dark gray (10YR 4/1) silt loam; weak medium platy, and weak thick platy structure; friable; 25 percent prominent cylindrical light gray (10YR 7/2), dry, clay depletions with sharp boundaries on faces of peds; fragments; neutral, pH 7.2, lamotte-morgan; clear smooth boundary. Lab sample # IL33230
    EB—33 to 41 centimeters (13.0 to 16.1 inches); dark grayish brown (10YR 4/2) silt loam; weak thick platy parts to moderate very fine subangular blocky structure; friable; 10 percent distinct very dark grayish brown (10YR 3/2), moist, organoargillans on all faces of peds; 1 percent fine faint irregular grayish brown (2.5Y 5/2), moist, iron depletions with clear boundaries in matrix and 10 percent prominent cylindrical light gray (10YR 7/2), dry, clay depletions with sharp boundaries on faces of peds and 10 percent fine prominent irregular yellowish brown (10YR 5/6), moist, masses of oxidized iron with clear boundaries in matrix; fragments; neutral, pH 7.0, lamotte-morgan; clear smooth boundary. Lab sample # IL33231. continuous - phpvsfiid 1390835; continuous - phpvsfiid 1390835
    Bt—41 to 61 centimeters (16.1 to 24.0 inches); dark grayish brown (10YR 4/2) silty clay loam; 35 percent clay; mottles; moderate fine subangular blocky structure; friable; 51 percent distinct grayish brown (10YR 5/2), moist, clay films on all faces of peds and 51 percent distinct very dark gray (10YR 3/1), moist, organoargillans on all faces of peds; 10 percent distinct irregular dark brown (7.5YR 3/3), moist, iron-manganese masses in matrix and 10 percent medium distinct irregular yellowish brown (10YR 5/6), moist, masses of oxidized iron; fragments; slightly acid, pH 6.5, lamotte-morgan; gradual smooth boundary. Lab sample # IL33232, IL33233. Horizon split for sampling: IL33233 51 to 61 cm, IL33232 41 to 51 cm.
    Btg1—61 to 86 centimeters (24.0 to 33.9 inches); light brownish gray (2.5Y 6/2) silty clay loam; 38 percent clay; and mottles; moderate medium subangular blocky structure; friable; 26 percent distinct grayish brown (10YR 5/2), moist, clay films on all faces of peds and 26 percent prominent very dark gray (10YR 3/1), moist, organoargillans on surfaces along root channels; 10 percent 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, and strong brown (7.5YR 4/6), moist, masses of oxidized iron; fragments; slightly acid, pH 6.4, lamotte-morgan; clear smooth boundary. Lab sample # IL33234, IL33235. Horizon split for sampling: IL33235 74 to 86 cm, IL33234 61 to 74 cm.
    Btg2—86 to 112 centimeters (33.9 to 44.1 inches); light brownish gray (2.5Y 6/2) silty clay loam; 29 percent clay; and and mottles; weak medium prismatic parts to moderate medium angular blocky structure; friable; 25 percent distinct dark gray (10YR 4/1), moist, clay films on surfaces along root channels and 25 percent distinct grayish brown (10YR 5/2), moist, clay films on all faces of peds; 10 percent prominent irregular dark brown (7.5YR 3/3), moist, iron-manganese masses in matrix and 10 percent medium prominent irregular strong brown (7.5YR 4/6), moist, and strong brown (7.5YR 5/8), moist, and yellowish brown (10YR 5/6), moist, masses of oxidized iron; fragments; slightly acid, pH 6.2, lamotte-morgan; gradual smooth boundary. Lab sample # IL33236, IL33237. Horizon split for sampling: IL33237 99 to 112 cm, IL33236 86 to 99 cm.
    BCg—112 to 152 centimeters (44.1 to 59.8 inches); light brownish gray (2.5Y 6/2) silty clay loam; and mottles; weak medium angular blocky structure; friable; 26 percent distinct dark gray (10YR 4/1), moist, clay films on surfaces along root channels; 10 percent prominent irregular dark brown (7.5YR 3/3), moist, iron-manganese masses in matrix and 10 percent medium prominent irregular strong brown (7.5YR 5/8), moist, and strong brown (7.5YR 4/6), moist, masses of oxidized iron; fragments; slightly acid, pH 6.1, lamotte-morgan. Lab sample # IL33238