IDENTIFIERS

  • Current Taxon Name (Soil Name): Post
  • OSD
  • Series Extent
  • User Site ID: S1965MT047007
  • User Pedon ID: 65MT047007
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 86P0430
  • NCSS Pedon Lab Data NASIS Record ID - 58235
  • Print Date: 4/21/2025

    • 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: 47.4576607
  • Std. Longitude: -114.2020798
  • Datum: WGS84
  • Township: 20N
  • Range: 20W
  • Section: 30
  • PLSS Details: 420 feet east and 132 feet north of SW corner
  • State: Montana
  • County: MT047—Lake
  • MLRA: 44A—Northern Rocky Mountain Valleys
  • Non-MLRA Soil Survey Area: MT629—Lake County Area, Montana
  • 7.5 Minute USGS Quad: 47114-D2—Charlo, Montana

    • PEDON

  • Current Taxonomic Class: Very-fine, illitic, frigid Typic Natrixerolls
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from SSL-CMS data
  • Pedon #: 7
  • Correlated Information:
  • Soil Name - Post
  • Classificaton Date - 2/1/2006
  • Moisture Class - xeric
  • Sampled As Information:
  • Soil Name - Post
  • Classificaton Date - 8/1/1965
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

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

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 8/1/1965 (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
  • Site Erosion Accelerated: water erosion
    • 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

    —

    —

    896

    —

    406

    —

    —

    6.7

    19.4

    —

    —

    —

    —

    —

    —

    —

    —

    —
    1Ap—0 to 15 centimeters (0.0 to 5.9 inches); grayish brown (10YR 5/2) crushed, very dark grayish brown (10YR 3/2) crushed, moist; silt loam; weak medium platy structure; slightly hard, friable, slightly sticky, slightly plastic; 5.5 very fine and fine roots; 5.5 very fine tubular pores; fragments; slightly acid, pH 6.5, hellige-truog; abrupt smooth boundary. many very fine and fine roots
    1B/E—15 to 23 centimeters (5.9 to 9.1 inches); very pale brown (10YR 7/3) crushed, brown (10YR 5/3) crushed, moist; silty clay; strong medium columnar, and moderate fine and medium angular blocky structure; very hard, firm, moderately sticky, moderately plastic; 0.5 very fine roots and 5.5 very fine roots; 5.5 very fine tubular and 0.5 medium tubular pores; fragments; slightly alkaline, pH 7.5, hellige-truog; clear smooth boundary. Worm channles filled with Ap silt loam material 1 to 1. cm round and (10YR 5/2, 3/2) colors. 55% B (10YR 7/3, 7.5YR 7/4) dry, 45% E (10YR 7/1, 6/2) dry. B (7.5YR 5/4) moist, E (10YR 5/3) moist.; many very fine roots; few very fine roots
    1Bt1—23 to 30 centimeters (9.1 to 11.8 inches); pink (7.5YR 7/4) crushed, brown (7.5YR 5/4) crushed, moist; clay; strong medium prismatic, and moderate fine and medium angular blocky structure; very hard, very firm, very sticky, very plastic; 2.5 very fine roots and 5.5 very fine roots; 2.5 very fine and fine tubular pores; fragments; moderately alkaline, pH 7.9, hellige-truog; gradual smooth boundary. Secondary choice of colors dry crushed and moist rubbed is (10YR 6/3) dry and 5/3 moist rubbed or (7.5YR 6/2-6/4) dry. Less than 4% by weight of sand and clay films. Clay films mostly (10YR 5/2 and 7.5YR 4/4); many very fine roots; common very fine roots
    1Bt2—30 to 41 centimeters (11.8 to 16.1 inches); pink (7.5YR 7/4) crushed, brown (7.5YR 5/4) crushed, moist; clay; moderate medium prismatic, and moderate fine and medium angular blocky structure; very hard, very firm, very sticky, very plastic; 2.5 very fine roots; 2.5 very fine and fine tubular pores; fragments; moderately alkaline, pH 8.2, hellige-truog; gradual smooth boundary. Lab sample # 86P02547. Secondary choice of colors dry crushed and moist rubbed is (10YR 6/3) dry and 5/3 moist rubbed or (7.5YR 6/2-6/4) dry. Less than 4% by weight of sand and clay films. Clay films mostly (10YR 5/2 and 7.5YR 4/4).; common very fine roots
    1Bt3—41 to 53 centimeters (16.1 to 20.9 inches); pink (7.5YR 7/4) crushed, brown (7.5YR 5/4) crushed, moist; clay; moderate medium prismatic, and moderate medium subangular blocky structure; very hard, very firm, very sticky, very plastic; 2.5 very fine roots; 2.5 very fine tubular pores; fragments; moderately alkaline, pH 8.4, hellige-truog; gradual smooth boundary. Lab sample # 86P02548. Secondary choice of colors dry crushed and moist rubbed is (10YR 6/3) dry and 5/3 moist rubbed or (7.5YR 6/2-6/4) dry. Less tha 4% by weight of sand and clay films. Clay films mostly (10YR 5/2 and 7.5YR 4/4).; common very fine roots
    1Bk—53 to 69 centimeters (20.9 to 27.2 inches); very pale brown (10YR 7/3) crushed, brown (10YR 5/3) crushed, moist; clay; strong medium and coarse platy structure; hard, firm, very sticky, very plastic; 2.5 very fine roots; 2.5 very fine tubular pores; fragments; strong effervescence, by hcl, 1n; moderately alkaline, pH 8.4, hellige-truog; clear smooth boundary. Secondary choices of colors dry crushed and moist rubbed is (10YR 7/2) dry and 5 or 6/3 moist rubbed or (7.5YR 6/2, 7/2, 7/4) dry crushed and 5/4 moist rubbed.; common very fine roots
    1C1—69 to 97 centimeters (27.2 to 38.2 inches); very pale brown (10YR 7/3) crushed, brown (10YR 5/3) crushed, moist; clay; strong medium and coarse platy structure; hard, firm, very sticky, very plastic; 0.5 very fine roots; 0.5 very fine tubular pores; fragments; strong effervescence, by hcl, 1n; moderately alkaline, pH 7.9, hellige-truog; clear wavy boundary. Lab sample # 86P02549. Secondary choices of colors dry crushed or moist rubbed is (10YR 7/2) dry and 5 or 6/3 moist rubbed or (7.5YR 6/2, 7/2, 7/4) dry and 5/4 moist rubbed.; few very fine roots
    1C2—97 to 135 centimeters (38.2 to 53.1 inches); very pale brown (10YR 7/3) crushed, pale brown (10YR 6/3) crushed, moist; clay; strong medium and coarse platy structure; hard, firm, very sticky, very plastic; 0.5 very fine roots throughout; 0.5 very fine tubular pores; fragments; strong effervescence, by hcl, 1n; strongly alkaline, pH 8.5, hellige-truog. Secondary choice of colors dry crushed and moist rubbed is (10YR 7/2) dry and 5 or 6/3 moist rubbed or (7.5YR 6/2, 7/2, 7/4) dry crushed and 5/4 moist rubbed.; few very fine roots throughout