IDENTIFIERS

  • Current Taxon Name (Soil Name): Mammoth
  • OSD
  • Series Extent
  • User Site ID: S1990CO019001
  • User Pedon ID: 90CO019001
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 90P0777
  • NCSS Pedon Lab Data NASIS Record ID - 62710
  • Print Date: 1/30/2025

    • 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: 39.6816673
  • Std. Longitude: -105.4677811
  • Datum: WGS84
  • Township: 4S
  • Range: 72W
  • Section: 20
  • PLSS Details: 1800 feet N and 250 feet E of SW corner
  • State: Colorado
  • County: CO019—Clear Creek
  • MLRA: 48A—Southern Rocky Mountains

    • PEDON

  • Current Taxonomic Class: Loamy-skeletal, paramicaceous Lamellic Dystrocryepts
  • Current Taxon Kind: series
  • Pedon Type: OSD pedon
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from SSL-CMS data
  • Pedon #: 1
  • Correlated Information:
  • Soil Name - Mammoth
  • PSC - 25 to 102 cm.
  • Classificaton Date - 6/18/2007
  • Moisture Class - udic
  • Sampled As Information:
  • Soil Name - Newcomb
  • Taxonomic Class - Sandy-skeletal, mixed Alfic Cryochrept
  • Taxon Kind - series
  • Classificaton Date - 6/1/1990
  • Moisture Class - udic
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Landscape: mountains or deeply dissected plateaus
  • Hill Slope Profile: backslope
  • Slope Shape Down: convex
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 6/1/1990 (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

    30

    —

    —

    2969

    —

    90

    69

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    Oa—0 to 2 centimeters (0.0 to 0.8 inches); fragments; abrupt wavy boundary. Lab sample # 90P04530. slightly decomposed needles, twigs, bark, and stamens
    Oe—2 to 5 centimeters (0.8 to 2.0 inches); fragments; abrupt wavy boundary. Lab sample # 90P04531. intermediately decomposed needles, twigs, bark, and cones
    A—5 to 10 centimeters (2.0 to 3.9 inches); very dark brown (10YR 2/2), grayish brown (10YR 5/2), dry; very cobbly coarse sandy loam; massive; soft, very friable, nonsticky, nonplastic; 2.5 very fine roots and 0.5 coarse roots; 0.5 very fine vesicular and 2.5 very fine interstitial pores; 20 percent by volume 75-162-250 millimeter unspecified fragments; slight effervescence; abrupt wavy boundary. Lab sample # 90P04532. 25% gravel; few coarse roots; common very fine roots
    E—10 to 33 centimeters (3.9 to 13.0 inches); brown (7.5YR 5/4), very pale brown (10YR 7/4), dry; very gravelly coarse sandy loam; weak medium subangular blocky, and moderate fine subangular blocky structure; soft, very friable, nonsticky, nonplastic; 15 percent by volume 75-162-250 millimeter unspecified fragments; slight effervescence; clear smooth boundary. Lab sample # 90P04533. 25% gravel
    E/B—33 to 48 centimeters (13.0 to 18.9 inches); 40 percent brown (7.5YR 4/4) and 60 percent brown (7.5YR 5/4), 40 percent light brown (7.5YR 6/4) and 60 percent pink (7.5YR 7/4), dry; very gravelly coarse sandy loam; weak medium subangular blocky, and weak fine subangular blocky structure; soft, very friable, nonsticky, nonplastic; 0.5 very fine roots and 0.5 coarse roots; 0.5 very fine vesicular and 2.5 very fine interstitial pores; 1 percent by volume 250-425-600 millimeter unspecified fragments and 10 percent by volume 75-162-250 millimeter unspecified fragments; slight effervescence; clear wavy boundary. Lab sample # 90P04534. 35% gravel; arrived at this due to color combination; B material seemed to be in irregular shaped masses (mostly rounded); few coarse roots; few very fine roots
    Bw1—48 to 86 centimeters (18.9 to 33.9 inches); brown (7.5YR 4/4), light brown (7.5YR 6/4), dry; extremely gravelly coarse sandy loam; weak medium subangular blocky, and weak fine subangular blocky structure; soft, very friable, nonsticky, nonplastic; 5.5 very fine and fine roots and 0.5 medium and coarse roots; 0.5 fine vesicular and 5.5 fine interstitial pores; 15 percent by volume 75-162-250 millimeter unspecified fragments; slight effervescence; gradual wavy boundary. Lab sample # 90P04535. 55% gravel; many lamellae 10mm thick, cont. (5YR 4/4), gr scl (20% clay) slightly sticky, slightly plastic; common lamellae 5mm thick discont. (5YR 4/4), gr sl (16% clay) slightly sticky, slightly plastic; few medium and coarse roots; many very fine and fine roots
    Bw2—86 to 104 centimeters (33.9 to 40.9 inches); brown (7.5YR 4/4) extremely cobbly loamy sand; weak medium subangular blocky structure; soft, very friable, nonsticky, nonplastic; 0.5 very fine roots and 0.5 medium and coarse roots; 0.5 fine vesicular and 0.5 fine interstitial pores; 8 percent by volume 250-425-600 millimeter unspecified fragments and 30 percent by volume 75-162-250 millimeter unspecified fragments; slight effervescence; gradual wavy boundary. Lab sample # 90P04536. 40% gravel; few lamellae 20mm thick, cont. (5YR 4/4) gr scl (22% clay), slightly sticky, slightly plastic; common lamellae 5-7mm thick, cont. (5YR 4/4) gr sl (15% clay), slightly sticky, nonplastic; few lamellae 15mm thick, cont. (5YR 5/6) g; few medium and coarse roots; few very fine roots
    Bw3—104 to 117 centimeters (40.9 to 46.1 inches); brown (7.5YR 5/4) extremely cobbly loamy coarse sand; weak coarse subangular blocky, and weak fine subangular blocky structure; loose, loose, nonsticky, nonplastic; 0.5 very fine and fine roots; 5.5 fine and medium and 2.5 fine interstitial pores; 5 percent by volume 250-425-600 millimeter unspecified fragments and 30 percent by volume 75-162-250 millimeter unspecified fragments; slight effervescence; gradual wavy boundary. Lab sample # 90P04537. 40% gravel; few lamellae 12-15mm thick, discont. (7.5YR 4/6) gr sl (12% clay), slightly sticky, non plastic; few very fine and fine roots
    BC—117 to 155 centimeters (46.1 to 61.0 inches); brown (7.5YR 4/4) extremely gravelly coarse sand; single grain; loose, loose, nonsticky, nonplastic; 0.5 fine and medium roots; 5 percent by volume 250-425-600 millimeter unspecified fragments and 15 percent by volume 75-162-250 millimeter unspecified fragments; slight effervescence. Lab sample # 90P04538. 65% gravel; few fine and medium roots