IDENTIFIERS

  • Current Taxon Name (Soil Name): Twotop
  • OSD
  • Series Extent
  • User Site ID: S1958SD113003
  • User Pedon ID: S1958SD113003
  • Vegetation Plot ID: S1958SD113003
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 40A2431
  • NCSS Pedon Lab Data NASIS Record ID - 37127
  • Print Date: 9/23/2024

    • 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: 43.2508316
  • Std. Longitude: -102.8399963
  • Datum: WGS84
  • Township: 38N
  • Range: 47W
  • Section: 23
  • PLSS Details: 75 feet W and 200 feet S of the NE corner of the SE 1/4 of the NE 1/4 of the NE 1/4 of the SE 1/4
  • State: South Dakota
  • County: SD113—Oglala Lakota
  • MLRA: 60A—Pierre Shale Plains
  • Non-MLRA Soil Survey Area: SD113—Shannon County, South Dakota

    • PEDON

  • Current Taxonomic Class: Very-fine, smectitic, mesic Typic Torrerts
  • Current Taxon Kind: series
  • Pedon Record Orgin: Converted from PDP 3.x
  • Pedon #: 3
  • Correlated Information:
  • Soil Name - Twotop
  • Classificaton Date - 7/23/2007
  • Moisture Class - aridic (torric)
  • Sampled As Information:
  • Soil Name - Orman
  • Classificaton Date - 8/1/1958
  • Dynamic Soil Properties:
  • Erosion Class - 0
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Landform: terrace
  • Slope Shape Down: linear
  • Drainage Class: moderately well
  • Surface Fragments: 0.00 percent
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 8/1/1958 (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

    BRJA

    PASM

    Bromus japonicus

    Pascopyrum smithii

    Japanese brome

    western wheatgrass

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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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    A1c—0 to 5 centimeters (0.0 to 2.0 inches); olive gray (5Y 5/2) and gray (5Y 5/1) crushed, dark olive gray (5Y 3/2) and olive gray (5Y 4/2) crushed, moist; silty clay; weak medium and coarse platy parts to moderate very fine granular structure; hard, friable; fragments; slight effervescence; clear smooth boundary. Lab sample # 40A19030. Quartz predominantly finely divided bleached; minerals primarily quartz; temperature 78 degrees F.
    ABc—5 to 15 centimeters (2.0 to 5.9 inches); gray (5Y 5/1), olive gray (5Y 4/2), moist; clay; weak medium prismatic parts to weak very fine and fine angular blocky structure; hard, firm; 0.5 fine pores; gray (5Y 5/1), dry, coats on faces of peds and clay films on all faces of peds; fragments; slight effervescence; gradual smooth boundary. Lab sample # 40A19031. Quartz predominantly finely divided bleached; minerals primarily quartz; temperature 70 degrees F.; continuous - phpvsfiid 185681; patchy - phpvsfiid 185682; continuous - phpvsfiid 185681; patchy - phpvsfiid 185682
    B21c—15 to 36 centimeters (5.9 to 14.2 inches); gray (5Y 5/1), olive gray (5Y 5/2), moist; clay; weak medium and coarse prismatic parts to moderate fine and medium subangular blocky structure; very hard, very firm; 0.5 fine pores; clay films on faces of peds; fragments; slight effervescence; gradual smooth boundary. Lab sample # 40A19032. Quartz predominantly finely divided bleached; minerals primarily quartz; temperature 71 degrees F.; continuous - phpvsfiid 185683; continuous - phpvsfiid 185683
    B22c—36 to 53 centimeters (14.2 to 20.9 inches); light olive gray (5Y 6/2), olive (5Y 5/3), moist; clay; weak very coarse prismatic parts to moderate fine and medium subangular blocky structure; very hard, very firm; 0.5 fine pores; olive gray (5Y 4/2), moist, coats on faces of peds and olive gray (5Y 5/2), dry, coats on faces of peds and clay films on all faces of peds and 10 percent iron stains on rock fragments; fragments; slight effervescence; clear smooth boundary. Lab sample # 40A19033. Some quartz finely divided bleached; minerals primarily quartz; temperature 71 degrees F.; patchy - phpvsfiid 185684; patchy - phpvsfiid 185685; patchy - phpvsfiid 185686; patchy - phpvsfiid 185684; patchy - phpvsfiid 185685; patchy - phpvsfiid 185686
    B3cacs1—53 to 69 centimeters (20.9 to 27.2 inches); light olive gray (5Y 6/2), olive (5Y 5/3), moist; clay; moderate fine and medium subangular blocky structure; very hard, very firm; 0.5 fine pores; olive gray (5Y 4/2), moist, coats on faces of peds and olive gray (5Y 5/2), dry, coats on faces of peds and clay films on all faces of peds and 10 percent faint iron stains on rock fragments; 1 percent fine lime masses and 1 percent fine salt masses; fragments; slight effervescence; gradual smooth boundary. Lab sample # 40A19034. Minerals primarily quartz with some feldspar and iron-manganese concentrations; temperature 71 degrees F.; patchy - phpvsfiid 185688; patchy - phpvsfiid 196076; patchy - phpvsfiid 196077; patchy - phpvsfiid 185688; patchy - phpvsfiid 196076; patchy - phpvsfiid 196077
    B3cacs2—69 to 97 centimeters (27.2 to 38.2 inches); light olive gray (5Y 6/2), olive (5Y 5/3), moist; clay; weak and moderate fine and medium subangular blocky structure; very hard, very firm; 0.5 fine pores; olive gray (5Y 4/2), moist, coats on faces of peds and olive gray (5Y 5/2), dry, coats on faces of peds and clay films on vertical faces of peds and 10 percent faint iron stains on rock fragments; 3 percent fine lime masses and 3 percent fine salt masses; fragments; slight effervescence; gradual smooth boundary. Lab sample # 40A19035. Minerals primarily quartz with some feldspar and iron-manganese concentrations; temperature 71 degrees F.; patchy - phpvsfiid 196079; patchy - phpvsfiid 196080; patchy - phpvsfiid 196081; patchy - phpvsfiid 196079; patchy - phpvsfiid 196080; patchy - phpvsfiid 196081
    CcacsA1b—97 to 112 centimeters (38.2 to 44.1 inches); light olive gray (5Y 6/2), olive (5Y 5/3), moist; clay; weak and moderate fine and medium subangular blocky structure; hard, firm; clay films on all faces of peds and 10 percent faint iron stains on rock fragments; 1 percent fine lime masses and 3 percent fine salt masses and 1 percent fine gypsum crystals, unspecified; fragments; slight effervescence; clear smooth boundary. Lab sample # 40A19036. Some quartz finely divided bleached; minerals primarily quartz with some feldspar and iron-manganese concentrations; temperature 66 degrees F.; patchy - phpvsfiid 196083; patchy - phpvsfiid 196083
    CcacsB2b—112 to 135 centimeters (44.1 to 53.1 inches); pale olive (5Y 6/3), olive (5Y 5/3), moist; clay; weak and moderate fine and medium subangular blocky structure; hard, very firm; clay films on all faces of peds and slickensides (pedogenic) on faces of peds and 10 percent iron stains on faces of peds and 10 percent manganese or iron-manganese stains on faces of peds and 10 percent faint iron stains on rock fragments; 1 percent fine lime masses and 1 percent fine salt masses and 1 percent fine gypsum crystals, unspecified; fragments; slight effervescence. Lab sample # 40A19037. Quartz darkly iron stained in iron stained materials and lightly iron stained in matrix materials; slickensides faces showing grooves and striations. Temperature 64 degrees F.; patchy - phpvsfiid 196085; continuous - phpvsfiid 196087; continuous - phpvsfiid 196088; patchy - phpvsfiid 196085; continuous - phpvsfiid 196087; continuous - phpvsfiid 196088