IDENTIFIERS

  • Current Taxon Name (Soil Name): Alona
  • OSD
  • Series Extent
  • User Site ID: S1974MT055003
  • User Pedon ID: S1974MT055003
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 40A3729
  • NCSS Pedon Lab Data NASIS Record ID - 39394
  • Print Date: 4/26/2025

    • 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: 47.2029953
  • Std. Longitude: -106.1343002
  • Datum: WGS84
  • Township: 17N
  • Range: 44E
  • Section: 29
  • PLSS Details: 1600 feet west and 2800 feet north of the SE corner
  • State: Montana
  • County: MT055—McCone
  • MLRA: 54—Rolling Soft Shale Plain
  • Non-MLRA Soil Survey Area: MT055—McCone County, Montana
  • 7.5 Minute USGS Quad: 47106-B2—Hedstrom Lake NW, Montana

    • PEDON

  • Current Taxonomic Class: Fine-silty, mixed, superactive, frigid Borollic Camborthids
  • Current Taxon Kind: series
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from PDP 3.x
  • Pedon #: 3
  • Correlated Information:
  • Soil Name - Alona
  • PSC - 25 to 100 cm.
  • Classificaton Date - 7/23/2007
  • Moisture Class - aridic (torric)
  • Sampled As Information:
  • Soil Name - Alona
  • Classificaton Date - 9/1/1974
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Landform: alluvial fan
  • Slope Shape Down: linear
  • Drainage Class: well
  • Surface Fragments: 0.00 percent
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 9/1/1974 (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

    2

    —

    —

    792

    —

    305

    —

    —

    5.6

    18.9

    -8.3

    —

    —

    —

    —

    —

    —

    —

    —
    A1—0 to 11 centimeters (0.0 to 4.3 inches); grayish brown (10YR 5/2) crushed, very dark grayish brown (10YR 3/2) crushed, moist; silt loam; weak medium subangular blocky parts to moderate fine granular structure; slightly hard, very friable, slightly sticky, slightly plastic; 21.0 fine roots; 21.0 fine tubular pores; fragments; noneffervescent; moderately alkaline, pH 8.0, thymol-blue; clear smooth boundary. Lab sample # 40A28735
    B2—11 to 26 centimeters (4.3 to 10.2 inches); light brownish gray (10YR 6/2) crushed, dark grayish brown (10YR 4/2), moist; silt loam; moderate medium prismatic parts to moderate fine and medium subangular blocky structure; slightly hard, very friable, moderately sticky, slightly plastic; 21.0 fine roots; 21.0 fine tubular pores; 30 percent faint grayish brown (10YR 5/2), dry, organic stains on faces of peds; fragments; strong effervescence; moderately alkaline, pH 8.2, thymol-blue; clear smooth boundary. Lab sample # 40A28736. continuous - phpvsfiid 189561; continuous - phpvsfiid 189561
    C1CA—26 to 56 centimeters (10.2 to 22.0 inches); very pale brown (10YR 7/4), yellowish brown (10YR 5/4), moist; silt loam; weak coarse prismatic parts to moderate coarse subangular blocky structure; hard when dry, friable, moderately sticky, moderately plastic; 3.0 fine roots; 21.0 fine tubular pores; 3 percent fine lime masses; fragments; violent effervescence; strongly alkaline, pH 8.8, thymol-blue; gradual smooth boundary. Lab sample # 40A28737
    C2—56 to 104 centimeters (22.0 to 40.9 inches); pale yellow (2.5Y 7/4), light olive brown (2.5Y 5/4), moist; silt loam; massive; slightly hard, very friable, moderately sticky, moderately plastic; 3.0 fine roots; 3.0 fine tubular pores; 1 percent fine noncoherent cemented gypsum crystals, unspecified; fragments; violent effervescence; strongly alkaline, pH 8.8, thymol-blue; gradual smooth boundary. Lab sample # 40A28738
    C3—104 to 152 centimeters (40.9 to 59.8 inches); pale yellow (2.5Y 7/4), light olive brown (2.5Y 5/4), moist; silt loam; massive; slightly hard, very friable, moderately sticky, moderately plastic; 0.5 fine roots; 0.5 fine tubular pores; 1 percent fine noncoherent cemented gypsum crystals, unspecified; fragments; slight effervescence; strongly alkaline, pH 8.6, thymol-blue; gradual smooth boundary. Lab sample # 40A28739
    C4—152 to 183 centimeters (59.8 to 72.0 inches); pale yellow (2.5Y 7/4), light olive brown (2.5Y 5/4), moist; silt loam; massive; slightly hard, very friable, moderately sticky, moderately plastic; 0.5 fine roots; 0.5 fine tubular pores; 1 percent fine noncoherent cemented calcite crystals; fragments; slight effervescence; moderately alkaline, pH 8.4, thymol-blue; gradual smooth boundary. Lab sample # 40A28740