IDENTIFIERS

  • Current Taxon Name (Soil Name): Marvan
  • OSD
  • Series Extent
  • User Site ID: S1990MT071012
  • User Pedon ID: 90MT071012
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 90P1094
  • Print Date: 11/21/2024

    • 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: 47.8769455
  • Std. Longitude: -107.6172256
  • Datum: WGS84
  • Township: 25N
  • Range: 32E
  • Section: 33
  • PLSS Details: 1900 feet S and 1400 feet E of NW corner
  • State: Montana
  • County: MT071—Phillips
  • MLRA: 52—Brown Glaciated Plains

    • PEDON

  • Describers Name: Chuck Gordon and Rick Bandy
  • Current Taxonomic Class: Fine, smectitic, frigid Udorthentic Chromusterts
  • Current Taxon Kind: series
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from SSL-CMS data
  • Pedon #: 12
  • 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 - 9/1/1990
  • Moisture Class - ustic
  • Moisture SUBClass - udic
  • Dynamic Soil Properties:
  • Erosion Class - 1
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Landscape: plains
  • Landform: terrace—stream or lake
  • Anthropogenic Feature: leveled land
  • Slope Shape Down: linear
  • Runoff: low
  • Drainage Class: well
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 9/1/1990 (actual site observation date)
  • Microrelief Elevation: 1
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - grass/herbaceous cover
  • Site Obs. Cover Kind 2 - rangeland, grassland
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
  • Site Erosion Accelerated: water erosion
    • Pedon Diagnostic Features
    Feature Kind Feature Depth L-H Feature Thickness L-RV-H
    cm

    ochric epipedon

    0—10

    —-
    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

    —

    —

    762

    —

    30

    —

    —

    6

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    A—0 to 10 centimeters (0.0 to 3.9 inches); grayish brown (2.5Y 5/2), dark grayish brown (2.5Y 4/2), moist; clay; moderate fine granular structure; slightly hard, friable, moderately sticky, moderately plastic; 2.5 very fine and fine roots throughout and 2.5 medium roots throughout; 0.5 medium tubular pores; fragments; slight effervescence, by hcl, 1n; clear smooth boundary. Lab sample # 90P06756. common surface cracks 2 cm wide & 10 cm deep; common very fine and fine roots throughout; common medium roots throughout; effervescence is continuous
    Bw—10 to 48 centimeters (3.9 to 18.9 inches); light brownish gray (2.5Y 6/2), dark grayish brown (2.5Y 4/2), moist; clay; strong coarse prismatic, and strong medium angular blocky structure; very hard, very firm, very sticky, very plastic; 2.5 fine and medium roots between peds; 0.5 fine tubular pores; 15 percent slickensides (pedogenic); fragments; slight effervescence, by hcl, 1n; clear wavy boundary. Lab sample # 90P06757. common vertical cracks with intersecting slickensides at 45% from horizontal; few intersecting slickensides surface features; common fine and medium roots between peds; effervescence is continuous; continuous - phpvsfiid 233855; continuous - phpvsfiid 233855
    By—48 to 91 centimeters (18.9 to 35.8 inches); light brownish gray (2.5Y 6/2), dark grayish brown (2.5Y 4/2), moist; clay; strong medium subangular blocky structure; very hard, very firm, very sticky, very plastic; 0.5 fine and medium roots between peds; 0.5 fine tubular pores; 11 percent medium gypsum masses; fragments; slight effervescence, by hcl, 1n; gradual irregular boundary. Lab sample # 90P06758. common medium masses of gypsum concentrations; few fine and medium roots between peds; effervescence is continuous
    Byz—91 to 191 centimeters (35.8 to 75.2 inches); light brownish gray (2.5Y 6/2), dark grayish brown (2.5Y 4/2), moist; clay; strong medium subangular blocky structure; very hard, very firm, very sticky, very plastic; 0.5 fine and medium roots between peds; 0.5 fine tubular pores; 11 percent medium gypsum masses and 11 percent medium salt masses; fragments; slight effervescence, by hcl, 1n. Lab sample # 90P06759. & 90P6760; few very thin strata of sicl textures; common medium masses of gypsum concentrations; common medium salt masses concentrations; few fine and medium roots between peds; effervescence is continuous