IDENTIFIERS

  • Current Taxon Name (Soil Name): Ulm
  • OSD
  • Series Extent
  • User Site ID: S1991CO123007
  • User Pedon ID: 91CO123007
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 91P0871
  • NCSS Pedon Lab Data NASIS Record ID - 63909
  • 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: 40.8280563
  • Std. Longitude: -104.7858353
  • Datum: WGS84
  • Township: 10N
  • Range: 66W
  • Section: 15
  • PLSS Details: 550 feet N and 175 feet E of SW corner
  • State: Colorado
  • County: CO123—Weld
  • MLRA: 67—Central High Plains

    • PEDON

  • Describers Name: Michael Petersen, Al Price, Tom Reinsch
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from SSL-CMS data
  • Pedon #: 7
  • Sampled As Information:
  • Soil Name - Ulm
  • Taxonomic Class - Fine, montmorillonitic Ustollic Haplargids
  • PSC - 25 to 38 cm.
  • Classificaton Date - 7/1/1991
  • Moisture Class - ustic
  • Dynamic Soil Properties:
  • Erosion Class - 1
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Landform: hillside or mountainside
  • Geomorphic Component Hills: side slope
  • Hill Slope Profile: backslope
  • Slope Position: upper third
  • Slope Shape Down: convex
  • Runoff: medium
  • Drainage Class: well
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 7/1/1991 (actual site observation date)
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - grass/herbaceous cover
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
  • Site Erosion Accelerated: water erosion
    • Pedon Diagnostic Features
    Feature Kind Feature Depth L-H Feature Thickness L-RV-H
    cm

    ochric epipedon

    argillic horizon

    0—5

    25—38

    —-

    —-
    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

    —

    —

    1682

    —

    225

    30

    —

    —

    9

    23

    1

    8

    22

    1

    —

    —

    —

    —

    —
    A1—0 to 5 centimeters (0.0 to 2.0 inches); light brownish gray (10YR 6/2), dark brown (10YR 3/3), moist; fine sandy loam; weak medium crumb structure; soft, very friable, nonsticky, nonplastic; 5.5 very fine and fine roots throughout and 2.5 fine roots throughout; 4 percent by volume 2-39-75 millimeter mixed fragments; clear smooth boundary. Lab sample # 91P05282. common fine roots throughout; many very fine and fine roots throughout
    A2—5 to 15 centimeters (2.0 to 5.9 inches); brown (10YR 5/3), dark brown (10YR 3/3), moist; fine sandy loam; moderate fine granular structure; soft, very friable, slightly sticky, nonplastic; 2.5 fine and medium roots throughout and 0.5 coarse roots between peds; fragments; clear smooth boundary. Lab sample # 91P05283. few coarse roots between peds; common fine and medium roots throughout
    BA—15 to 25 centimeters (5.9 to 9.8 inches); brown (10YR 5/3), brown (10YR 4/3), moist; loam; weak and moderate fine and medium subangular blocky structure; slightly hard, very friable, slightly sticky, slightly plastic; 2.5 fine roots throughout; fragments; abrupt smooth boundary. Lab sample # 91P05284. common fine roots throughout
    Bt1—25 to 38 centimeters (9.8 to 15.0 inches); brown (10YR 5/3) and yellowish brown (10YR 5/4) crushed, brown (10YR 4/3) crushed, moist; clay loam; moderate medium prismatic, and moderate fine and medium subangular blocky structure; hard, friable, moderately sticky, moderately plastic; 2.5 fine roots throughout; 15 percent faint clay films on faces of peds and 15 percent faint clay films in root channels and/or pores; fragments; slight effervescence; clear wavy boundary. Lab sample # 91P05285. few clay films surface features on faces of peds; few clay films surface features in root channels and/or pores; common fine roots throughout; patchy - phpvsfiid 227124; patchy - phpvsfiid 227125; patchy - phpvsfiid 227124; patchy - phpvsfiid 227125
    Bt2—38 to 66 centimeters (15.0 to 26.0 inches); light brownish gray (10YR 6/2) crushed, dark grayish brown (10YR 4/2), moist; clay loam; moderate medium prismatic, and strong medium subangular blocky structure; very hard, firm, very sticky, very plastic; 0.5 very fine and fine roots throughout; 2 percent faint clay films on faces of peds and 15 percent faint clay films in root channels and/or pores; fragments; slight effervescence; abrupt smooth boundary. Lab sample # 91P05286. very few clay films surface features on faces of peds; few clay films surface features in root channels and/or pores; few very fine and fine roots throughout; discontinuous - phpvsfiid 227126; patchy - phpvsfiid 227127; discontinuous - phpvsfiid 227126; patchy - phpvsfiid 227127
    BCk—66 to 89 centimeters (26.0 to 35.0 inches); 20 percent light gray (10YR 7/2) and 25 percent brownish yellow (10YR 6/6) and 55 percent yellowish brown (10YR 5/4), 30 percent light yellowish brown (10YR 6/4) and 70 percent brownish yellow (10YR 6/8), moist; sandy clay loam; moderate fine prismatic, and moderate fine and medium subangular blocky structure; hard, firm, moderately sticky, moderately plastic; 2.5 fine roots between peds; 2 percent distinct black (10YR 2/1) coats on faces of peds; 11 percent medium spherical lime masses; fragments; slight effervescence; clear wavy boundary. Lab sample # 91P05287. 20-25% of soil structure is remnants of shale/rock structure; common medium soft masses of lime concentrations; very few coats surface features on faces of peds; common fine roots between peds; patchy - phpvsfiid 227128; patchy - phpvsfiid 227128
    2CBk—89 to 130 centimeters (35.0 to 51.2 inches); light gray (10YR 7/2), light brownish gray (10YR 6/2), moist; loamy sand; massive; slightly hard, very friable, nonsticky, nonplastic; 1 percent fine and medium irregular lime masses; fragments; slight effervescence. Lab sample # 91P05288. few fine and medium soft masses of lime concentrations; effervescence is discontinuous