IDENTIFIERS

  • Current Taxon Name (Soil Name): Gregson
  • OSD
  • Series Extent
  • User Site ID: S1991MT0391030
  • User Pedon ID: 91MT0391030
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 92P0318
  • NCSS Pedon Lab Data NASIS Record ID - 64557
  • Print Date: 2/16/2025

    • 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: 46.3177795
  • Std. Longitude: -113.3069458
  • Datum: WGS84
  • Township: 7N
  • Range: 14W
  • Section: 35
  • PLSS Details: 2640 feet W and 2400 feet S of NE corner
  • State: Montana
  • County: MT039—Granite

    • PEDON

  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from SSL-CMS data
  • Pedon #: 103
  • Sampled As Information:
  • Soil Name - Gregson
  • Taxonomic Class - Fine-loamy over sandy or sandy-skeletal, mixed Aquic Haploborolls
  • Classificaton Date - 5/1/1991
  • Moisture Class - aquic
  • Dynamic Soil Properties:
  • Erosion Class - 1
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Landform: playa or alluvial flat
  • Anthropogenic Feature: leveled land
  • Drainage Class: somewhat poorly
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 5/1/1991 (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

    4

    —

    —

    1585

    —

    0

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    O—0 to 3 centimeters (0.0 to 1.2 inches); fragments.
    A—3 to 23 centimeters (1.2 to 9.1 inches); very dark grayish brown (10YR 3/2), dark grayish brown (10YR 4/2), dry; loam; 22 percent clay; 11 percent dark yellowish brown (10YR 4/4) medium faint mottles; moderate medium subangular blocky structure; hard, friable, slightly sticky, slightly plastic; 2.5 fine and medium roots; 2.5 very fine and fine tubular and 2.5 medium tubular pores; fragments; slight effervescence; neutral, pH 7.2, hellige-truog; clear smooth boundary. Lab sample # 92P01936. common fine and medium roots; common medium faint 10YR44 mottles
    Bw—23 to 46 centimeters (9.1 to 18.1 inches); brown (10YR 4/3), brown (10YR 5/3), dry; loam; 23 percent clay; 30 percent dark yellowish brown (10YR 4/4) medium distinct and 30 percent dark yellowish brown (10YR 4/6) medium distinct mottles; moderate coarse subangular blocky structure; slightly hard, very friable, slightly sticky, slightly plastic; 2.5 very fine and fine roots and 0.5 medium roots; 2.5 fine and medium tubular pores; fragments; slight effervescence; neutral, pH 7.2, hellige-truog; clear wavy boundary. Lab sample # 92P01937. few medium roots; common very fine and fine roots; many medium distinct 10YR44 mottles; many medium distinct 10YR46 mottles
    Bw2—46 to 64 centimeters (18.1 to 25.2 inches); yellowish brown (10YR 5/4), grayish brown (10YR 5/2), dry; sandy loam; 12 percent clay; 30 percent dark yellowish brown (10YR 4/4) medium distinct and 30 percent dark yellowish brown (10YR 4/6) medium distinct mottles; weak coarse subangular blocky structure; slightly hard, very friable, slightly sticky, slightly plastic; 0.5 fine roots; 2.5 interstitial pores; fragments; slight effervescence; neutral, pH 7.2, hellige-truog; clear wavy boundary. Lab sample # 92P01938. few fine roots; many medium distinct 10YR44 mottles; many medium distinct 10YR46 mottles
    2C—64 to 155 centimeters (25.2 to 61.0 inches); brown (10YR 5/3), pale brown (10YR 6/3), dry; very gravelly loamy sand; single grain; loose, loose, nonsticky, nonplastic; 0.5 very fine roots; fragments; slight effervescence; slightly alkaline, pH 7.4, hellige-truog. Lab sample # 92P01939. few very fine roots