IDENTIFIERS

  • Current Taxon Name (Soil Name): MARIAS
  • OSD
  • Series Extent
  • User Site ID: S1962MT105002
  • User Pedon ID: S1962MT105002
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 40A3337
  • NCSS Pedon Lab Data NASIS Record ID - 38452
  • Print Date: 6/2/2024

    • 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: 48.4668808
  • Std. Longitude: -107.2574081
  • Datum: WGS84
  • Township: 31N
  • Range: 34E
  • Section: 1
  • PLSS Details: 330 feet N and 135 feet E of SW Corner
  • Location Description: Approximately 9 miles NW of Hinsdale.
  • State: Montana
  • County: MT105—Valley
  • MLRA: 52—Brown Glaciated Plains
  • Non-MLRA Soil Survey Area: MT105—Valley County, Montana

    • PEDON

  • Describers Name: Grossman, Walker, Haderlie and Mogen.
  • Current Taxonomic Class: Fine, montmorillonitic, frigid Udorthentic Chromusterts
  • Current Taxon Kind: series
  • Pedon Record Orgin: Converted from PDP 3.x
  • Pedon #: 2
  • Correlated Information:
  • Soil Name - MARIAS
  • PSC - 25 to 100 cm.
  • Classificaton Date - 7/16/2007
  • Sampled As Information:
  • Soil Name - Marias
  • Classificaton Date - 8/20/1962
  • Dynamic Soil Properties:
  • Erosion Class - 0
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Landscape: plains
  • Drainage Class: well
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 8/20/1962 (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

    —

    —

    671

    —

    381

    —

    —

    4.4

    18.9

    -12.2

    —

    —

    —

    —

    —

    —

    —

    —
    Ap—0 to 18 centimeters (0.0 to 7.1 inches); grayish brown (2.5Y 5/2), dark grayish brown (2.5Y 4/2), moist; clay; strong very fine granular structure; hard, friable, moderately sticky, very plastic; fragments; slight effervescence; abrupt boundary. Lab sample # 40A25998. Structure beneath a very thin crust 1/64 inch thick, in which outline of granules is apparent.
    A12—18 to 38 centimeters (7.1 to 15.0 inches); grayish brown (2.5Y 5/2), dark grayish brown (2.5Y 4/2), moist; clay; strong coarse angular blocky parts to moderate very fine angular blocky structure; very hard, firm, moderately sticky, very plastic; fragments; slight effervescence; gradual boundary. Lab sample # 40A25999. Tongues of darker colored soil (2.5Y 4/2 dry, 3/2 moist), as thick as 1/2 inch, surround prisms 3 to 6 inches in diameter and extend to depths as great as 34 inches, thinning to a mere film.
    A13—38 to 66 centimeters (15.0 to 26.0 inches); grayish brown (2.5Y 5/2), dark grayish brown (2.5Y 4/2), moist; clay; strong coarse angular blocky parts to moderate very fine angular blocky structure; extremely hard, firm, moderately sticky, very plastic; distinct slickensides (pedogenic); fragments; slight effervescence. Lab sample # 40A26000. Slickenside surfaces as large as one foot across.
    A14—66 to 86 centimeters (26.0 to 33.9 inches); grayish brown (2.5Y 5/2), dark grayish brown (2.5Y 4/2), moist; clay; strong coarse angular blocky parts to moderate very fine angular blocky structure; extremely hard, firm, moderately sticky, very plastic; distinct slickensides (pedogenic); fragments; slight effervescence; clear smooth boundary. Lab sample # 40A26001
    C1cs1—86 to 112 centimeters (33.9 to 44.1 inches); gray (5Y 5/1), very dark gray (5Y 3/1), moist; clay; strong very coarse prismatic structure; extremely hard, firm, moderately sticky, very plastic; 21 percent fine gypsum crystals, unspecified in cracks and very coarse gypsum masses; fragments; slight effervescence; gradual boundary. Lab sample # 40A26002
    C1cs2—112 to 142 centimeters (44.1 to 55.9 inches); gray (5Y 5/1) and gray (5Y 6/1), very dark gray (5Y 3/1), moist; clay; strong very coarse prismatic, and very fine granular structure; very hard, firm, moderately sticky, very plastic; 3 percent dendritic gypsum crystals, unspecified and coarse gypsum masses; fragments; slight effervescence; clear boundary. Lab sample # 40A26003
    C2cs—142 to 173 centimeters (55.9 to 68.1 inches); olive gray (5Y 5/2), dark olive gray (5Y 3/2), moist; clay; strong very coarse prismatic parts to strong very fine angular blocky, and very fine granular structure; very hard, firm, moderately sticky, very plastic; 1 percent gypsum crystals, unspecified; fragments; slight effervescence; gradual boundary. Lab sample # 40A26004. Gypsum crystals in vertical lines.
    C31—173 to 203 centimeters (68.1 to 79.9 inches); grayish brown (2.5Y 5/2), dark grayish brown (2.5Y 4/2), moist; clay; strong very coarse prismatic parts to strong very fine angular blocky, and very fine granular structure; very hard, firm, moderately sticky, very plastic; fragments; slight effervescence; gradual boundary. Lab sample # 40A26005. Prisms consist of very fine granules separated by thick fillings of strong very fine angular blocky material.
    C32—203 to 234 centimeters (79.9 to 92.1 inches); grayish brown (2.5Y 5/2), dark grayish brown (2.5Y 4/2), moist; clay; very hard, firm, moderately sticky, very plastic; fragments; slight effervescence. Lab sample # 40A26006. Lighter colored horizontal bands 1/8 inch thick one inch apart.