IDENTIFIERS

  • Current Taxon Name (Soil Name): Marias
  • OSD
  • Series Extent
  • User Site ID: S1988MT105002
  • User Pedon ID: 88MT105002
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 88P0850
  • NCSS Pedon Lab Data NASIS Record ID - 60968
  • 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: 48.4522209
  • Std. Longitude: -107.2119446
  • Datum: WGS84
  • Township: 31N
  • Range: 35E
  • Section: 7
  • PLSS Details: 150 feet N and 1500 feet W of SE section Corner 4th strip W of N-S road
  • Location Description: Valley County, MT
  • State: Montana
  • County: MT105—Valley
  • MLRA: 52—Brown Glaciated Plains

    • PEDON

  • Describers Name: Charles Gordon, Dennis Smetana, Clair Clark, Marty
  • Current Taxonomic Class: Fine, mixed, active, frigid Udorthentic Chromusterts
  • Current Taxon Kind: series
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from SSL-CMS data
  • Pedon #: 2
  • Correlated Information:
  • Soil Name - Marias
  • PSC - 25 to 100 cm.
  • Classificaton Date - 7/11/2007
  • Moisture Class - udic
  • Moisture Subclass - udic
  • Sampled As Information:
  • Soil Name - Marias
  • Taxonomic Class - Fine, montmorillonitic, frigid Udorthentic Chromus
  • Taxon Kind - series
  • Classificaton Date - 7/1/1988
  • Moisture Class - ustic
  • Moisture SUBClass - udic
  • Dynamic Soil Properties:
  • Erosion Class - 2
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Landscape: river valley
  • Landform: playa or alluvial flat
  • Geomorphic Component Hills: side slope
  • Hill Slope Profile: backslope
  • Runoff: low
  • Drainage Class: well
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 7/1/1988 (actual site observation date)
  • Microrelief Kind: microdepression
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - crop cover
  • 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

    cambic horizon

    0—20

    20—64

    —-

    —-
    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

    4

    —

    —

    724

    —

    90

    33

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    Ap1—0 to 5 centimeters (0.0 to 2.0 inches); grayish brown (2.5Y 5/2) crushed, dark grayish brown (2.5Y 4/2) interior, moist; clay; moderate very fine granular structure; loose, friable, moderately sticky, very plastic; 0.5 fine and medium roots; 0.5 very fine and fine tubular pores; fragments; strong effervescence; moderately alkaline, pH 8.2, hellige-truog; abrupt smooth boundary. Lab sample # 88P04485. lime is disseminated; few fine and medium roots
    Ap2—5 to 20 centimeters (2.0 to 7.9 inches); grayish brown (2.5Y 5/2) crushed, dark grayish brown (2.5Y 4/2) interior, moist; clay; moderate coarse platy structure; very hard, firm, moderately sticky, very plastic; 0.5 fine roots; 0.5 fine tubular pores; fragments; strong effervescence; moderately alkaline, pH 8.2, hellige-truog; abrupt smooth boundary. Lab sample # 88P04486. lime is disseminated; few fine roots
    Bw1—20 to 46 centimeters (7.9 to 18.1 inches); grayish brown (2.5Y 5/2) interior, dark grayish brown (2.5Y 4/2) interior, moist; clay; strong medium and coarse angular blocky, and strong fine angular blocky structure; very hard, very friable, moderately sticky, very plastic; 0.5 fine roots; 0.5 fine tubular pores; organic stains and 2 percent distinct very dark grayish brown (10YR 3/2) slickensides (pedogenic) on faces of peds; fragments; strong effervescence; moderately alkaline, pH 8.4, hellige-truog; gradual wavy boundary. Lab sample # 88P04487. Common 2.5 cm and less and few 8 cm and larger intersecting slickensides tilted 45 degrees from horizontal; lime is disseminated; very few intersecting slickensides surface features on faces of peds; few fine roots; continuous - phpvsfiid 223504; continuous - phpvsfiid 223504
    Bw2—46 to 64 centimeters (18.1 to 25.2 inches); grayish brown (2.5Y 5/2) interior, dark grayish brown (2.5Y 4/2) interior, moist; clay; strong medium angular blocky, and strong fine angular blocky structure; very hard, very friable, moderately sticky, very plastic; 0.5 fine roots; 0.5 fine tubular pores; 2 percent distinct very dark gray (10YR 3/1) slickensides (pedogenic) on faces of peds; fragments; strong effervescence; moderately alkaline, pH 8.4, hellige-truog; clear wavy boundary. Lab sample # 88P04488. Common 3 cm and less and few 8 cm and larger intersecting slickensides tilted 45 degrees from horizontal; lime is disseminated; very few intersecting slickensides surface features on faces of peds; few fine roots; continuous - phpvsfiid 223506; continuous - phpvsfiid 223506
    By1—64 to 81 centimeters (25.2 to 31.9 inches); light brownish gray (2.5Y 6/2) interior, dark grayish brown (2.5Y 4/2) interior, moist; clay; strong medium subangular blocky structure; hard, firm, moderately sticky, very plastic; 0.5 fine roots; 0.5 fine tubular pores; 11 percent fine gypsum threads and 11 percent medium gypsum masses; fragments; strong effervescence; moderately alkaline, pH 8.2, hellige-truog; gradual wavy boundary. Lab sample # 88P04489. lime is disseminated; common medium masses of gypsum concentrations; common fine gypsum threads concentrations; few fine roots
    By2—81 to 122 centimeters (31.9 to 48.0 inches); grayish brown (2.5Y 5/2) interior, very dark grayish brown (2.5Y 3/2) interior, moist; clay; moderate medium subangular blocky structure; hard, firm, moderately sticky, very plastic; 0.5 fine tubular pores; 11 percent fine gypsum threads and 11 percent medium gypsum masses; fragments; slight effervescence; moderately alkaline, pH 8.2, hellige-truog; clear smooth boundary. Lab sample # 88P04490. lime is disseminated; common medium masses of gypsum concentrations; common fine gypsum threads concentrations
    C1—122 to 152 centimeters (48.0 to 59.8 inches); grayish brown (2.5Y 5/2) interior, very dark grayish brown (2.5Y 3/2) interior, moist; clay; massive; slightly hard, friable, moderately sticky, very plastic; 0.5 fine tubular pores; fragments; slight effervescence; moderately alkaline, pH 8.2, hellige-truog; gradual wavy boundary. Lab sample # 88P04491. lime is disseminated
    C2—152 to 203 centimeters (59.8 to 79.9 inches); grayish brown (2.5Y 5/2) interior, very dark grayish brown (2.5Y 3/2) interior, moist; silty clay; massive; very hard, firm, moderately sticky, very plastic; 0.5 fine tubular pores; 1 percent fine gypsum masses; fragments; slight effervescence; moderately alkaline, pH 8.2, hellige-truog. Lab sample # 88P04492. lime is disseminated; few fine masses of gypsum concentrations