IDENTIFIERS

  • Current Taxon Name (Soil Name): Lonna
  • OSD
  • Series Extent
  • User Site ID: S1956MT103008
  • User Pedon ID: S1956MT103008
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 40A3532
  • NCSS Pedon Lab Data NASIS Record ID - 39197
  • Print Date: 4/24/2025

    • 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: 46.2643776
  • Std. Longitude: -107.2184906
  • Datum: WGS84
  • Township: 6N
  • Range: 36E
  • Section: 21
  • PLSS Details: 600 feet west and 50 feet south of north quarter corner
  • State: Montana
  • County: MT103—Treasure
  • MLRA: 58A—Northern Rolling High Plains, Northern Part
  • Non-MLRA Soil Survey Area: MT103—Treasure County, Montana

    • PEDON

  • Describers Name: R. L. Moshier
  • Current Taxonomic Class: Fine-silty, mixed, frigid Borollic Camborthids
  • Current Taxon Kind: series
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from PDP 3.x
  • Pedon #: 8
  • Correlated Information:
  • Soil Name - Lonna
  • Classificaton Date - 7/23/2007
  • Moisture Class - aridic (torric)
  • Sampled As Information:
  • Soil Name - Nunn
  • Classificaton Date - 10/1/1956
  • Dynamic Soil Properties:
  • Erosion Class - 1
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Landform: fan terrace
  • Slope Shape Across: linear
  • Slope Shape Down: linear
  • Drainage Class: well
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 10/1/1956 (actual site observation date)
  • Surface Cover Properties:
  • 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

    1

    —

    —

    792

    —

    0

    —

    —

    —

    —

    —

    —

    —

    —

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    Ap1—0 to 10 centimeters (0.0 to 3.9 inches); grayish brown (10YR 5/2), dark grayish brown (10YR 4/2), moist; silt loam; friable, slightly sticky, slightly plastic; 21.0 roots; fragments; slight effervescence; moderately alkaline, pH 8.4, thymol-blue; abrupt smooth boundary. Lab sample # 40A27259. cloddy.
    Ap2—10 to 25 centimeters (3.9 to 9.8 inches); grayish brown (10YR 5/2), dark grayish brown (10YR 4/2), moist; silty clay loam; columnar structure; friable, slightly sticky, slightly plastic; 21.0 roots; fragments; slight effervescence; moderately alkaline, pH 8.4, thymol-blue; abrupt smooth boundary. Lab sample # 40A27260. cloddy.
    B31—25 to 46 centimeters (9.8 to 18.1 inches); light olive gray (5Y 6/2), olive (5Y 4/3), moist; silty clay loam; weak medium prismatic structure; friable, slightly sticky, slightly plastic; 21.0 roots; 0.5 very fine and 0.5 fine and medium pores; 3 percent clay films; fragments; strong effervescence; strongly alkaline, pH 8.8, thymol-blue; abrupt smooth boundary. Lab sample # 40A27261. patchy - phpvsfiid 187908; patchy - phpvsfiid 187908
    B32ca—46 to 71 centimeters (18.1 to 28.0 inches); light olive gray (5Y 6/2), olive (5Y 4/3), moist; silty clay loam; weak coarse prismatic structure; friable, moderately sticky, moderately plastic; 21.0 roots; clay films; fragments; violent effervescence; strongly alkaline, pH 8.7, thymol-blue; gradual smooth boundary. Lab sample # 40A27262. with scattered white lime splotches.; patchy - phpvsfiid 187909; patchy - phpvsfiid 187909
    B33ca—71 to 91 centimeters (28.0 to 35.8 inches); light olive gray (5Y 6/2), olive (5Y 4/3), moist; silty clay loam; weak coarse prismatic structure; friable, moderately sticky, moderately plastic; 21.0 very fine pores; 1 percent clay films; fragments; violent effervescence; strongly alkaline, pH 8.6, thymol-blue; gradual smooth boundary. Lab sample # 40A27263
    C1—91 to 107 centimeters (35.8 to 42.1 inches); pale olive (5Y 6/3), olive (5Y 4/3), moist; silt loam; massive; very friable, moderately sticky, moderately plastic; 0.5 roots; 3.0 very fine pores; fragments; strong effervescence; strongly alkaline, pH 8.6, thymol-blue; clear smooth boundary. Lab sample # 40A27264
    C2—107 to 127 centimeters (42.1 to 50.0 inches); pale olive (5Y 6/3), olive (5Y 4/3), moist; silt loam; massive; very friable, slightly sticky, slightly plastic; 0.5 very fine pores; fragments; strong effervescence; strongly alkaline, pH 8.7, thymol-blue; clear smooth boundary. Lab sample # 40A27265
    C3—127 to 157 centimeters (50.0 to 61.8 inches); pale olive (5Y 6/3), olive (5Y 4/3), moist; stratified fine sandy loam; very friable, nonsticky, nonplastic; fragments; slight effervescence; strongly alkaline, pH 8.7, thymol-blue. Lab sample # 40A27266