IDENTIFIERS

  • Current Taxon Name (Soil Name): McDonald
  • OSD
  • Series Extent
  • User Site ID: S1965MT039002
  • User Pedon ID: S1965MT039002
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 40A3633
  • NCSS Pedon Lab Data NASIS Record ID - 39298
  • Print Date: 11/23/2024

    • 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: 46.3484993
  • Std. Longitude: -113.5542603
  • Datum: WGS84
  • Township: 7N
  • Range: 16W
  • Section: 24
  • PLSS Details: 1400 feet south and 750 feet east of NW corner
  • State: Montana
  • County: MT039—Granite
  • MLRA: 43B—Central Rocky Mountains
  • Non-MLRA Soil Survey Area: MT621—Granite County Area, Montana
  • 7.5 Minute USGS Quad: 46113-C5—Cornish Gulch, Montana

    • PEDON

  • Describers Name: C. A. Mogen
  • Current Taxonomic Class: Fine, illitic, frigid Boralfic Argixerolls
  • Current Taxon Kind: taxadjunct
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from PDP 3.x
  • Pedon #: 2
  • Correlated Information:
  • Soil Name - McDonald
  • PSC - 38 to 88 cm.
  • Classificaton Date - 7/23/2007
  • Moisture Class - xeric
  • Sampled As Information:
  • Soil Name - Mcdonald
  • Classificaton Date - 7/22/1965
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Landform: valley
  • Slope Shape Down: convex
  • Drainage Class: well
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 7/22/1965 (actual site observation date)
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - grass/herbaceous cover
  • 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

    10

    —

    —

    —

    —

    45

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    —

    —

    —

    —

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    A11—0 to 5 centimeters (0.0 to 2.0 inches); dark gray (10YR 4/1), black (10YR 2/1), moist; loam; moderate medium platy structure; soft, friable, nonsticky, slightly plastic; 2 percent by volume 2-39-75 millimeter unspecified fragments and 3 percent by volume 75-162-250 millimeter unspecified fragments; clear boundary. Lab sample # 40A27958; dry when described;
    A12—5 to 15 centimeters (2.0 to 5.9 inches); 20 percent dark gray (10YR 4/1), black (10YR 2/1), moist; clay; weak fine granular structure; slightly hard, friable, nonsticky, slightly plastic; 2 percent by volume 2-39-75 millimeter unspecified fragments and 3 percent by volume 75-162-250 millimeter unspecified fragments; gradual boundary. Lab sample # 40A27959; dry when described;
    A13—15 to 23 centimeters (5.9 to 9.1 inches); 23 percent brown (10YR 5/3), very dark grayish brown (10YR 3/2), moist; loam; moderate medium subangular blocky structure; slightly hard, friable, slightly sticky, slightly plastic; clay films between sand grains; 2 percent by volume 2-39-75 millimeter unspecified fragments; clear boundary. Lab sample # 40A27960; dry when described;
    B&A—23 to 38 centimeters (9.1 to 15.0 inches); 33 percent pale brown (10YR 6/3), brown (10YR 4/3), moist; clay loam; strong fine angular blocky structure; hard when dry, friable, moderately sticky, moderately plastic; clay films between sand grains; 2 percent by volume 2-39-75 millimeter unspecified fragments; gradual boundary. Lab sample # 40A27961; dry when described;. patchy - phpvsfiid 197715; patchy - phpvsfiid 197715
    B21T—38 to 48 centimeters (15.0 to 18.9 inches); pale brown (10YR 6/3) and 50 percent brown (7.5YR 4/4), brown (10YR 4/3) and dark brown (10YR 3/3), moist; clay; strong fine and medium prismatic parts to strong fine and medium angular blocky structure; extremely hard, firm, moderately sticky, very plastic; 3.0 fine tubular pores; clay films; 8 percent by volume 2-39-75 millimeter unspecified fragments; gradual boundary. Lab sample # 40A27962; dry when described;. continuous - phpvsfiid 197716; continuous - phpvsfiid 197716
    B22T—48 to 74 centimeters (18.9 to 29.1 inches); pale brown (10YR 6/3) crushed and 50 percent brown (7.5YR 4/4), brown (10YR 4/3) and dark brown (7.5YR 3/4), moist; clay; strong coarse prismatic parts to strong medium angular blocky structure; extremely hard, firm, moderately sticky, very plastic; 0.1 pores; clay films on faces of peds; 8 percent by volume 2-39-75 millimeter unspecified fragments; gradual boundary. Lab sample # 40A27963; dry when described;. continuous - phpvsfiid 197717; continuous - phpvsfiid 197717
    B23T—74 to 102 centimeters (29.1 to 40.2 inches); light brown (7.5YR 6/3) crushed and 35 percent brown (7.5YR 5/4), brown (7.5YR 5/4) crushed and brown (7.5YR 4/4), moist; clay loam; strong coarse prismatic parts to moderate medium subangular blocky structure; extremely hard, firm, moderately sticky, moderately plastic; clay films on faces of peds; 8 percent by volume 2-39-75 millimeter unspecified fragments; noneffervescent; clear boundary. Lab sample # 40A27964; moist when described;. continuous - phpvsfiid 197718; continuous - phpvsfiid 197718
    B3CA—102 to 127 centimeters (40.2 to 50.0 inches); light brown (7.5YR 6/3) crushed and 33 percent brown (7.5YR 5/4), brown (7.5YR 5/4) crushed and brown (7.5YR 4/4), moist; clay; moderate very coarse prismatic parts to moderate coarse platy structure; very hard, friable, slightly sticky, moderately plastic; clay films on faces of peds; fragments; slight effervescence; clear boundary. Lab sample # 40A27965; moist when described;. patchy - phpvsfiid 197719; patchy - phpvsfiid 197719
    C1CA—127 to 157 centimeters (50.0 to 61.8 inches); light brown (7.5YR 6/3) crushed and 33 percent brown (7.5YR 5/4), brown (7.5YR 5/4) crushed and brown (7.5YR 4/4), moist; clay loam; weak coarse platy parts to weak medium angular blocky structure; hard when dry, friable, slightly sticky, slightly plastic; clay films; fragments; slight effervescence; abrupt boundary. Lab sample # 40A27966; moist when described;. patchy - phpvsfiid 197720; patchy - phpvsfiid 197720
    2C2—157 to 193 centimeters (61.8 to 76.0 inches); 22 percent light brown (7.5YR 6/3), brown (7.5YR 4/4) rubbed, moist; loam; moderate medium and coarse platy structure; hard when dry, friable, slightly sticky, slightly plastic; 1 percent by volume 75-162-250 millimeter unspecified fragments and 2 percent by volume 2-39-75 millimeter unspecified fragments. Lab sample # 40A27967; moist when described;