IDENTIFIERS

  • Current Taxon Name (Soil Name): Penitente
  • OSD
  • Series Extent
  • User Site ID: S1957CO013002
  • User Pedon ID: S1957CO013002
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 40A3898
  • NCSS Pedon Lab Data NASIS Record ID - 39544
  • Print Date: 11/24/2024

    • LOCATION

  • Location Description: Niwot Ridge, approximately 500 yards east of the Tundra Laboratory, Boulder County, Colorado.
  • State: Colorado
  • County: CO013—Boulder
  • Non-MLRA Soil Survey Area: CO643—Boulder County Area, Colorado

    • PEDON

  • Describers Name: A. J. Cline
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from PDP 3.x
  • Pedon #: 2
  • Sampled As Information:
  • Soil Name - Penitente
  • Classificaton Date - 7/1/1957
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

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

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 7/1/1957 (actual site observation date)
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - tree cover
  • Site Obs. Cover Kind 2 - other tree cover
  • 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

    8

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    Ao,Aoo—0 to 3 centimeters (0.0 to 1.2 inches); fragments. Lab sample # 40A29840. Organic material consisting of undecomposed and partially decomposed Kobresia roots and plant remains.
    A1—3 to 16 centimeters (1.2 to 6.3 inches); black (10YR 2/1), very dark gray (10YR 3/1), dry; loam; weak and moderate coarse granular structure; soft, very friable; fragments; noneffervescent; moderately acid, pH 5.8, unspecified; clear wavy boundary. Lab sample # 40A29841. On the date sampled the temperature of this horizon was 50 degrees F.
    Bir—16 to 26 centimeters (6.3 to 10.2 inches); brown (10YR 4/3), pale brown (10YR 6/3), dry; loam; weak medium subangular blocky parts to weak and moderate very fine subangular blocky structure; slightly hard, very friable; fragments; noneffervescent; very strongly acid, pH 4.6, unspecified; clear smooth boundary. Lab sample # 40A29842. On the date of sampling the temperature of this horizon was 42 degrees F.
    BC—26 to 39 centimeters (10.2 to 15.4 inches); olive brown (2.5Y 4/4), pale yellow (2.5Y 7/3), dry; loam; weak medium subangular blocky parts to weak and moderate very fine subangular blocky structure; slightly hard, very friable; dark brown (10YR 3/3) around rock fragments; 15 percent by volume 250-425-600 millimeter unspecified fragments; noneffervescent; extremely acid, pH 4.4, unspecified; gradual wavy boundary. Lab sample # 40A29843. ON the date of sampling the temperature of this horizon was 30 degrees F.
    C—39 to 39 centimeters (15.4 to 15.4 inches); light olive brown (2.5Y 5/4), pale yellow (2.5Y 7/3), dry; very fine sandy loam; massive; hard, very friable; dark brown (10YR 3/3) around rock fragments; 50 percent by volume 250-425-600 millimeter unspecified fragments; noneffervescent; extremely acid, pH 4.4, unspecified. Lab sample # 40A29844. On the date of sampling the temperature of this horizon was 28 degrees F.