IDENTIFIERS

  • Current Taxon Name (Soil Name): Brocko
  • OSD
  • Series Extent
  • User Site ID: S1985MT007007
  • User Pedon ID: 85MT007007
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 85P0781
  • NCSS Pedon Lab Data NASIS Record ID - 57047
  • Print Date: 4/29/2025

    • 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: 46.0933342
  • Std. Longitude: -111.6105576
  • Datum: WGS84
  • Township: 4N
  • Range: 1E
  • Section: 16
  • PLSS Details: 3100 feet W and 35 feet N of the SE corner
  • State: Montana
  • County: MT007—Broadwater
  • MLRA: 44B—Central Rocky Mountain Valleys

    • PEDON

  • Describers Name: R. Richardson, W. Braker and J. Rogers
  • Current Taxonomic Class: Coarse-silty, mixed, superactive Borollic Calciorthids
  • Current Taxon Kind: series
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from SSL-CMS data
  • Pedon #: 7
  • Correlated Information:
  • Soil Name - Brocko
  • Classificaton Date - 7/11/2007
  • Moisture Class - aridic (torric)
  • Sampled As Information:
  • Soil Name - Brocko
  • Taxonomic Class - Coarse-silty, mixed Borollic Calciorthid
  • Taxon Kind - series
  • Classificaton Date - 7/1/1985
  • Moisture Class - aridic (torric)
  • Dynamic Soil Properties:
  • Erosion Class - 2
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

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

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 7/1/1985 (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

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    —

    1293

    —

    225

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    1Ap—0 to 15 centimeters (0.0 to 5.9 inches); brown (10YR 4/3) interior, pale brown (10YR 6/3) interior, dry; silt loam; 15 percent clay; weak very fine and fine granular structure; very friable, slightly sticky, slightly plastic; 5.5 very fine and fine roots; 5.5 tubular pores; fragments; strong effervescence, by hcl, 1n; moderately alkaline, pH 8.2, hellige-truog; abrupt smooth boundary. Lab sample # 85P04149. many very fine and fine roots
    1Bk1—15 to 43 centimeters (5.9 to 16.9 inches); brown (10YR 5/3) interior, very pale brown (10YR 7/3) interior, dry; silt loam; 20 percent clay; weak medium prismatic structure; very friable, slightly sticky, slightly plastic; 5.5 very fine and fine roots; 5.5 tubular pores; 30 percent lime masses; fragments; violent effervescence, by hcl, 1n; moderately alkaline, pH 8.4, hellige-truog; clear wavy boundary. Lab sample # 85P04150. many very fine and fine soft masses of lime concentrations; many very fine and fine roots
    1Bk2—43 to 74 centimeters (16.9 to 29.1 inches); yellowish brown (10YR 5/4) interior, very pale brown (10YR 7/3) interior, dry; silt loam; 20 percent clay; weak medium prismatic structure; very friable, slightly sticky, slightly plastic; 5.5 very fine and fine roots; 5.5 tubular pores; 11 percent lime masses; fragments; violent effervescence, by hcl, 1n; strongly alkaline, pH 8.6, hellige-truog; clear wavy boundary. Lab sample # 85P04151. common very fine and fine soft masses of lime concentrations; many very fine and fine roots
    1Bk3—74 to 104 centimeters (29.1 to 40.9 inches); brown (10YR 4/3) interior, pale brown (10YR 6/3) interior, dry; silt loam; 23 percent clay; weak medium prismatic structure; very friable, slightly sticky, slightly plastic; 5.5 very fine and fine roots; 5.5 tubular pores; fragments; violent effervescence, by hcl, 1n; strongly alkaline, pH 9.0, hellige-truog; clear wavy boundary. Lab sample # 85P04152. many very fine and fine roots
    1Bz—104 to 142 centimeters (40.9 to 55.9 inches); brown (10YR 4/3) interior, pale brown (10YR 6/3) interior, dry; loam; 24 percent clay; weak medium prismatic, and weak medium platy structure; very friable, slightly sticky, slightly plastic; 2.5 very fine roots; 5.5 tubular pores; 11 percent threadlike gypsum masses; fragments; violent effervescence, by hcl, 1n; moderately alkaline, pH 8.4, hellige-truog; clear wavy boundary. Lab sample # 85P04153. common masses of gypsum concentrations; common very fine roots
    1BC—142 to 157 centimeters (55.9 to 61.8 inches); dark yellowish brown (10YR 4/4) interior, light yellowish brown (10YR 6/4) interior, dry; sandy clay loam; 23 percent clay; massive; very friable; 2.5 very fine roots; 5.5 tubular pores; 11 percent gypsum masses; fragments; violent effervescence, by hcl, 1n; moderately alkaline, pH 8.4, hellige-truog. Lab sample # 85P04154. common masses of gypsum concentrations; common very fine roots