IDENTIFIERS

  • Current Taxon Name (Soil Name): Oragran
  • OSD
  • Series Extent
  • User Site ID: S1984CA605REDW040
  • User Pedon ID: S10CA023009
  • Vegetation Plot ID: S1984CA605REDW040
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 10N0680
  • NCSS Pedon Lab Data NASIS Record ID - 43148
  • Print Date: 4/22/2025

    • 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: 41.7644329
  • Std. Longitude: -124.0363812
  • Datum: WGS84
  • Township: 16N
  • Range: 1E
  • Section: 23
  • Location Description: Redwood National & State Parks, Del Norte County, California; lichen plot #7; 30 ft sw from tree #179
  • Map Unit: 760—Jayel-Walnett-Oragran complex, 9 to 30 percent slope, extremely stony
  • State: California
  • County: CA023—Humboldt
  • MLRA: 4—California Coastal Redwood Belt
  • Non-MLRA Soil Survey Area: CA605—Humboldt and Del Norte Area, California
  • 7.5 Minute USGS Quad: 41124-G1—Hiouchi, California

    • PEDON

  • Describers Name: Jim Popenoe & Mark Alpert
  • Current Taxonomic Class: Loamy-skeletal, magnesic, superactive, mesic Lithic Haploxerepts
  • Current Taxon Kind: series
  • Pedon Type: not classified to current taxon name
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: NASIS
  • Pedon #: 9
  • Correlated Information:
  • Soil Name - Oragran
  • PSC - 0 to 28 cm.
  • Classificaton Date - 4/12/2010
  • Soil Taxonomic Edition - tenth edition
  • Moisture Class - xeric
  • Moisture Subclass - typic
  • Sampled As Information:
  • Soil Name - Oragran
  • Taxonomic Class - Loamy-skeletal, magnesic, superactive, mesic Lithi
  • Taxon Kind - series
  • Classificaton Date - 5/22/1984
  • Dynamic Soil Properties:
  • Erosion Class - 0
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: residuum weathered from serpentinite
  • Landscape: mountains
  • Landform: ridge
  • Geomorphic Component Mountains: mountaintop
  • Hill Slope Profile: summit
  • Slope Complexity: simple
  • Slope Shape Across: linear
  • Slope Shape Down: linear
  • Runoff: high
  • Drainage Class: well
  • Flooding: none flooding
  • Ponding: none ponding
  • Bedrock: moderately coherent moderate weathered serpentinite with 10 to <45
  • Surface Fragments: 20.00 percent nonflat subangular very strongly coherent cemented 2- to 75-millimeter serpentinite, 1.00 percent nonflat subangular very strongly coherent cemented 250- to 600-millimeter serpentinite, 1.00 percent nonflat subangular very strongly coherent cemented 600- to 1000-millimeter serpentinite, 3.00 percent nonflat subangular very strongly coherent cemented 75- to 250-millimeter serpentinite,
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 5/22/1984 (actual site observation date)
  • Surface Water Kind: none observed
  • Plant Association Name: Jeffery pine-grass
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - tree cover
  • Site Obs. Cover Kind 2 - rangeland, savanna
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
  • Site Erosion Accelerated: water erosion sheet
    • Vegetation Plot Plants
    Plant Symbol Scientific Name National Vernacular Name Plant Type Group Canopy Cover % Vegetation Stata Level

    ARNE

    ARPA6

    FESTU

    PIJE

    PSME

    Arctostaphylos nevadensis

    Arctostaphylos patula

    Festuca

    Pinus jeffreyi

    Pseudotsuga menziesii

    pinemat manzanita

    greenleaf manzanita

    fescue

    Jeffrey pine

    Douglas-fir

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    Pedon Restrictions
    Kind Hardness Restriction Depth L-H Restriction Thickness L-RV-H
    cm

    bedrock, paralithic

    moderately coherent

    28 - 50

    - 22 -

    Pedon Diagnostic Features
    Feature Kind Feature Depth L-H Feature Thickness L-RV-H
    cm

    ochric epipedon

    cambic horizon

    paralithic contact

    0—15

    15—28

    28—50

    —15—

    —10—

    —22—
    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

    6

    —

    —

    582

    —

    20

    2400

    —

    200

    11

    14

    7

    —

    —

    —

    —

    —

    —

    —

    —
    A—0 to 15 centimeters (0.0 to 5.9 inches); red (2.5YR 5/6) broken face, dark red (2.5YR 3/6) broken face, moist; gravelly loam; 25 percent clay; weak medium subangular blocky, and moderate medium granular structure; slightly hard, friable, slightly sticky, slightly plastic; moderate permeability; 5.0 very fine roots and 3.0 medium roots and 5.0 fine roots; 3.0 very fine interstitial and 2.0 fine tubular and 3.0 fine interstitial pores; 22 percent by volume nonflat subangular very strongly coherent cemented 2-38-75 millimeter serpentinite fragments; noneffervescent; neutral, pH 7.0, hellige-truog; clear smooth boundary. Lab sample # 10N03113; moist when described; observed in pit, small
    Bw—15 to 28 centimeters (5.9 to 11.0 inches); red (2.5YR 5/6) broken face, dark red (2.5YR 3/6) broken face, moist; very cobbly clay loam; 28 percent clay; moderate coarse subangular blocky parts to moderate medium subangular blocky structure; slightly hard, friable, slightly sticky, slightly plastic; moderate permeability; 2.0 very fine roots and 2.0 medium roots and 2.0 fine roots and 2.0 coarse roots; 2.0 very fine tubular and 2.0 medium tubular and 2.0 fine tubular pores; 14 percent by volume nonflat subangular very strongly coherent cemented 2-38-75 millimeter serpentinite fragments and 40 percent by volume nonflat subangular very strongly coherent cemented 75-162-250 millimeter serpentinite fragments; noneffervescent; neutral, pH 7.0, hellige-truog; clear wavy boundary.; moist when described; observed in pit, small
    Cr—28 to 50 centimeters (11.0 to 19.7 inches); bedrock; fragments.; observed in pit, small