IDENTIFIERS

  • Current Taxon Name (Soil Name): Tanna
  • OSD
  • Series Extent
  • User Site ID: S1991MT093005
  • User Pedon ID: 91MT093005
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 91P0944
  • NCSS Pedon Lab Data NASIS Record ID - 63981
  • Print Date: 1/31/2025

    • 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: 45.9977760
  • Std. Longitude: -112.7166672
  • Datum: WGS84
  • Township: 3N
  • Range: 9W
  • Section: 21
  • PLSS Details: 30 feet west and 2640 feet north of SE corner
  • State: Montana
  • County: MT093—Silver Bow

    • PEDON

  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from SSL-CMS data
  • Pedon #: 5
  • Sampled As Information:
  • Soil Name - Tanna
  • Classificaton Date - 7/1/1991
  • Dynamic Soil Properties:
  • Erosion Class - 1
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

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

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 7/1/1991 (actual site observation date)
  • Surface Cover Properties:
  • 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

    2

    —

    —

    1640

    —

    45

    —

    —

    —

    —

    —

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    A1—0 to 5 centimeters (0.0 to 2.0 inches); very dark grayish brown (10YR 3/2), light brownish gray (10YR 6/2), dry; silt loam; massive, and platy; slightly hard, very friable, slightly sticky, slightly plastic; 5.5 very fine roots; fragments; very slight effervescence; strongly acid, pH 5.4, hellige-truog; clear wavy boundary. Lab sample # 91P05861. many very fine roots
    A2—5 to 15 centimeters (2.0 to 5.9 inches); very dark grayish brown (2.5Y 3/2), brown (10YR 5/3), dry; silty clay loam; strong medium subangular blocky structure; slightly hard, firm, slightly sticky, slightly plastic; 5.5 very fine roots; fragments; very slight effervescence; moderately acid, pH 5.6, hellige-truog; clear wavy boundary. Lab sample # 91P05862. many very fine roots
    Bt1—15 to 25 centimeters (5.9 to 9.8 inches); olive gray (5Y 4/2), dark grayish brown (2.5Y 4/2), dry; silty clay; strong medium prismatic structure; hard, firm, moderately sticky, moderately plastic; 5.5 very fine roots; fragments; very slight effervescence; slightly acid, pH 6.4, hellige-truog; clear wavy boundary. Lab sample # 91P05863. many very fine roots
    Bt2—25 to 38 centimeters (9.8 to 15.0 inches); olive (5Y 5/3), dark grayish brown (2.5Y 4/2), dry; silty clay loam; strong medium prismatic structure; hard, firm, moderately sticky, moderately plastic; 5.5 very fine roots; fragments; very slight effervescence; neutral, pH 7.2, hellige-truog; gradual wavy boundary. Lab sample # 91P05864. many very fine roots
    Bk1—38 to 66 centimeters (15.0 to 26.0 inches); olive (5Y 5/3), pale olive (5Y 6/3), dry; silty clay loam; weak medium and coarse prismatic structure; slightly hard, very friable, slightly sticky, slightly plastic; 2.5 very fine roots and 0.5 very fine roots; fragments; strong effervescence; moderately alkaline, pH 8.3, hellige-truog; gradual wavy boundary. Lab sample # 91P05865. few very fine roots; common very fine roots
    Bk2—66 to 86 centimeters (26.0 to 33.9 inches); olive (5Y 4/4), pale olive (5Y 6/3), dry; silty clay loam; weak medium and coarse prismatic structure; slightly hard, very friable, slightly sticky, slightly plastic; 0.5 very fine roots; fragments; strong effervescence; moderately alkaline, pH 8.2, hellige-truog; gradual wavy boundary. Lab sample # 91P05866. few very fine roots
    Cr1—86 to 119 centimeters (33.9 to 46.9 inches); olive (5Y 5/4), pale yellow (5Y 8/3), dry; fragments; very slight effervescence; gradual wavy boundary. Lab sample # 91P05867. higher fractured-WCC gray shale, roots in fractures
    Cr2—119 to 165 centimeters (46.9 to 65.0 inches); olive brown (2.5Y 4/4), pale yellow (2.5Y 8/2), dry; 0.5 roots in cracks; fragments; very slight effervescence. Lab sample # 91P05868. few roots in cracks