IDENTIFIERS

  • Current Taxon Name (Soil Name): Marvan
  • OSD
  • Series Extent
  • User Site ID: S1991MT041005
  • User Pedon ID: 91MT041005
  • Vegetation Plot ID: S1991MT041005
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 91P1130
  • Print Date: 11/11/2024

    • 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: 48.3494453
  • Std. Longitude: -110.0194473
  • Datum: WGS84
  • Township: 30N
  • Range: 13E
  • Section: 15
  • PLSS Details: 100 feet N and 200 feet W SE corner
  • Location Description: map 161.
  • State: Montana
  • County: MT041—Hill
  • MLRA: 52—Brown Glaciated Plains
  • Non-MLRA Soil Survey Area: MT041—Hill County, Montana

    • PEDON

  • Current Taxonomic Class: Fine, smectitic, frigid Sodic Gypsiusterts
  • Current Taxon Kind: taxadjunct
  • Pedon Record Orgin: Converted from PDP 3.x
  • Pedon #: 5
  • Correlated Information:
  • Soil Name - Marvan
  • Classificaton Date - 2/14/2024
  • Soil Taxonomic Edition - thirteenth edition
  • Moisture Subclass - udic
  • Sampled As Information:
  • Soil Name - Marvan
  • Taxonomic Class - Fine, montmorillonitic, frigid Udorthentic Chromus
  • Taxon Kind - series
  • Classificaton Date - 8/23/1991
  • Moisture Class - ustic
  • Moisture SUBClass - udic
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Landform: terrace
  • Runoff: low
  • Drainage Class: well
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 8/23/1991 (actual site observation date)
  • Air Photo ID: 309A
  • Surface Cover Properties:
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
  • Site Erosion Accelerated: wind erosion
    • Vegetation Plot Plants
    Plant Symbol Scientific Name National Vernacular Name Plant Type Group Canopy Cover % Vegetation Stata Level

    2BARE

    PASM

    —

    Pascopyrum smithii

    Bare Ground

    western wheatgrass

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

    mollic epipedon

    gypsic horizon

    0—30

    30—69

    —30—

    —39—
    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

    —

    —

    802

    —

    —

    —

    —

    —

    —

    —

    —

    —

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    A—0 to 8 centimeters (0.0 to 3.1 inches); light brownish gray (2.5Y 6/2), dark grayish brown (2.5Y 4/2), moist; clay; weak very fine granular structure; extremely hard, extremely firm*, very sticky, very plastic; 5.0 very fine roots; 5.0 very fine pores; fragments; strongly alkaline, pH 9.0, hellige-truog; clear smooth boundary. Lab sample # 91P07604
    Bw—8 to 30 centimeters (3.1 to 11.8 inches); grayish brown (2.5Y 5/2), dark grayish brown (2.5Y 4/2), moist; clay; weak very fine granular structure; extremely hard, extremely firm*, very sticky, very plastic; 21.0 very fine roots; 5.0 very fine pores; fragments; very strongly alkaline, pH 9.6, hellige-truog; clear wavy boundary. Lab sample # 91P07605
    Byz1—30 to 68 centimeters (11.8 to 26.8 inches); grayish brown (2.5Y 5/2), dark grayish brown (2.5Y 4/2), moist; clay; moderate fine and medium subangular blocky structure; extremely hard, extremely firm*, very sticky, very plastic; 1.0 very fine roots; 5.0 very fine pores; fragments; very strongly alkaline, pH 9.6, hellige-truog; gradual wavy boundary. Lab sample # 91P07606
    Byz2—68 to 112 centimeters (26.8 to 44.1 inches); light olive brown (2.5Y 5/4), dark grayish brown (2.5Y 4/2), moist; clay; moderate fine and medium subangular blocky structure; extremely hard, extremely firm*, very sticky, very plastic; 1.0 very fine roots; 5.0 very fine pores; fragments; very strongly alkaline, pH 9.6, hellige-truog; gradual wavy boundary. Lab sample # 91P07607
    Byz3—112 to 152 centimeters (44.1 to 59.8 inches); light olive brown (2.5Y 5/4), olive brown (2.5Y 4/4), moist; clay; moderate fine and medium subangular blocky structure; extremely hard, extremely firm*, very sticky, very plastic; 5.0 very fine pores; fragments; very strongly alkaline, pH 9.6, hellige-truog. Lab sample # 91P07608