IDENTIFIERS

  • Current Taxon Name (Soil Name): Gerdrum
  • OSD
  • Series Extent
  • User Site ID: S1966MT003001
  • User Pedon ID: S1966MT003001
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 40A3643
  • NCSS Pedon Lab Data NASIS Record ID - 39308
  • Print Date: 11/21/2024

    • 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: 45.6546516
  • Std. Longitude: -107.9840622
  • Datum: WGS84
  • Township: 2S
  • Range: 30E
  • Section: 14
  • PLSS Details: 800 feet east and 675 feet south of W 1/4 corner
  • Location Description: 400 feet north of trail, 1100 feet east of drift fence
  • State: Montana
  • County: MT003—Big Horn
  • Non-MLRA Soil Survey Area: MT607—Big Horn County Area, Montana

    • PEDON

  • Describers Name: J. C. Meshnick and C. A. Mogen
  • Current Taxonomic Class: Fine, smectitic, frigid Borollic Natrargids
  • Current Taxon Kind: series
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from PDP 3.x
  • Pedon #: 1
  • Correlated Information:
  • Soil Name - Gerdrum
  • PSC - 5 to 30 cm.
  • Classificaton Date - 7/23/2007
  • Moisture Class - aridic (torric)
  • Sampled As Information:
  • Soil Name - Allentine
  • Classificaton Date - 11/1/1966
  • Dynamic Soil Properties:
  • Erosion Class - 1
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Landform: alluvial fan
  • Drainage Class: well
  • Surface Fragments: 1.00 percent
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 11/1/1966 (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

    —

    —

    —

    1158

    —

    279

    —

    —

    7.8

    19.4

    -5

    —

    —

    —

    —

    —

    —

    —

    —
    A2—0 to 3 centimeters (0.0 to 1.2 inches); light brownish gray (10YR 6/2), very dark grayish brown (10YR 3/2), moist; loam; moderate very fine platy structure; soft, very friable, nonsticky, slightly plastic; 21.0 tubular pores; fragments; noneffervescent; abrupt boundary. Lab sample # 40A28049. the surface of the plates are completely coated with clear unstained mineral grains; there are many tubular and closed pores.
    B&A—3 to 5 centimeters (1.2 to 2.0 inches); light brownish gray (10YR 6/2), very dark grayish brown (10YR 3/2), moist; silty clay; strong medium platy structure; hard when dry, friable, moderately sticky, moderately plastic; 21.0 tubular pores; coats; fragments; noneffervescent; clear boundary. Lab sample # 40A28049. there are many tubular and closed pores and there is a continuous coating of clear stained mineral grains on tops of plates, common on the bottom of plates and there is continuous, thin, light-reflecting surface resembling clay film on the bottom of plates.; continuous - phpvsfiid 189613; continuous - phpvsfiid 189613
    B21T—5 to 18 centimeters (2.0 to 7.1 inches); grayish brown (10YR 5/2), dark grayish brown (10YR 4/2), moist; clay; strong medium prismatic parts to strong medium and coarse subangular blocky structure; extremely hard, firm, very sticky, very plastic; 0.5 pores; fragments; noneffervescent; gradual boundary. Lab sample # 40A28050. there are a few pores and some with rounded edges and some partly filled; there are light-reflecting surfaces of darkened coats which in the dry soil is dark grayish brown and in the moist soil very dark grayish brown; noncalcareous excepting very slightly calcareous in the lower inch or so.
    B22T—18 to 30 centimeters (7.1 to 11.8 inches); light brownish gray (2.5Y 6/2), dark grayish brown (10YR 4/2), moist; silty clay; moderate medium prismatic parts to strong medium and coarse subangular blocky structure; extremely hard, firm, moderately sticky, very plastic; fragments; strong effervescence. Lab sample # 40A28051. there are pores with rounded edges and peds have a light-reflecting surface in the dry soil and are coated darker, being grayish brown.
    B3CA—30 to 46 centimeters (11.8 to 18.1 inches); light brownish gray (2.5Y 6/2), dark grayish brown (10YR 4/2), moist; silty clay; moderate medium prismatic parts to moderate fine and medium angular blocky structure; extremely hard, firm, moderately sticky, very plastic; 3.0 fine pores; 3 percent fine gypsum masses; fragments; strong effervescence; diffuse boundary. Lab sample # 40A28052. strongly calcareous with common fine masses of segregated lime with diffused boundary.
    C1CA—46 to 79 centimeters (18.1 to 31.1 inches); gray (2.5Y 6/1), dark grayish brown (2.5Y 4/2), moist; clay; weak fine and medium prismatic parts to moderate fine and medium angular blocky structure; extremely hard, firm, very sticky, very plastic; 3 percent gypsum masses; fragments; strong effervescence; abrupt boundary. Lab sample # 40A28053
    C2—79 to 107 centimeters (31.1 to 42.1 inches); gray (2.5Y 6/1), dark gray (2.5Y 4/1), moist; clay; weak fine prismatic parts to moderate medium subangular blocky structure; extremely hard, firm, very sticky, very plastic; 3 percent fine gypsum masses; fragments; strong effervescence; diffuse boundary. Lab sample # 40A28054
    C3—107 to 124 centimeters (42.1 to 48.8 inches); gray (2.5Y 6/1), dark gray (2.5Y 4/1), moist; clay; massive; extremely hard, firm, very sticky, very plastic; 1 percent fine threadlike gypsum masses; fragments; strong effervescence. Lab sample # 40A28055
    C4CS—124 to 165 centimeters (48.8 to 65.0 inches); gray (2.5Y 6/1), dark gray (2.5Y 4/1), moist; clay; massive; extremely hard, firm, moderately sticky, very plastic; 21 percent gypsum crystals, unspecified; fragments; strong effervescence. Lab sample # 40A28056. strongly calcareous without segregated lime but with many veins of gypsum that are 1 or 2 inches long and as thick as 1/4 inch.
    C5—165 to 196 centimeters (65.0 to 77.2 inches); gray (2.5Y 6/1), dark gray (2.5Y 4/1), moist; silty clay; very hard, friable, moderately sticky, very plastic; 1 percent fine threadlike gypsum crystals, unspecified; fragments; strong effervescence. Lab sample # 40A28057
    C6—196 to 262 centimeters (77.2 to 103.1 inches); gray (2.5Y 6/1), dark gray (2.5Y 4/1), moist; silty clay; very hard, friable, moderately sticky, very plastic; 1 percent threadlike gypsum crystals, unspecified; fragments; strong effervescence. Lab sample # 40A28058
    C7—262 to 292 centimeters (103.1 to 115.0 inches); fragments. Lab sample # 40A28059