IDENTIFIERS

  • Current Taxon Name (Soil Name): Scaath
  • OSD
  • Series Extent
  • User Site ID: S1982CA605REDW023
  • User Pedon ID: S10CA023018
  • Vegetation Plot ID: S1982CA605REDW023
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 10N0689
  • NCSS Pedon Lab Data NASIS Record ID - 58615
  • Print Date: 11/26/2024

    • 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: 41.2246528
  • Std. Longitude: -123.9826917
  • Datum: WGS84
  • Township: 10N
  • Range: 2E
  • Section: 29
  • PLSS Details: southwest quarter, southwest quarter
  • Location Description: Redwood National Park, Humboldt County, California; located acout 18 kilometers east of the town of Trinidad, .15 kilometers on W-Line Road from Bald Hills Road and 305 meters west along the ridge from W-Line Road.
  • Map Unit: 550—Scaath-Rockysaddle-Wiregrass complex, dry, 50 to 75 percent slopes
  • State: California
  • County: CA023—Humboldt
  • MLRA: 4—California Coastal Redwood Belt
  • Non-MLRA Soil Survey Area: CA796—Redwood National and State Parks, California
  • 7.5 Minute USGS Quad: 41123-B8—Bald Hills, California

    • PEDON

  • Describers Name: Jim Popenoe
  • Current Taxonomic Class: Loamy-skeletal, mixed, active, isomesic Ustic Haplohumults
  • Current Taxon Kind: series
  • Pedon Type: OSD pedon
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: NASIS
  • Pedon #: 18
  • Correlated Information:
  • Soil Name - Scaath
  • PSC - 29 to 79 cm.
  • Classificaton Date - 4/12/2010
  • Soil Taxonomic Edition - eighth edition
  • Moisture Class - ustic
  • Moisture Subclass - udic
  • Sampled As Information:
  • Soil Name - Scaath
  • Classificaton Date - 5/4/1982
  • Dynamic Soil Properties:
  • Erosion Class - 0
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: colluvium derived from sandstone and shale over residuum weathered from sandstone and shale
  • Landscape: mountains
  • Landform: mountain slope
  • Geomorphic Component Mountains: mountainflank, upper third
  • Hill Slope Profile: shoulder
  • Slope Complexity: simple
  • Slope Shape Across: convex
  • Slope Shape Down: linear
  • Runoff: medium
  • Drainage Class: well
  • Flooding: none flooding
  • Ponding: none ponding
  • Bedrock: moderately coherent moderate weathered sandstone and shale at 94cm with <10
  • Geology: Franciscan Formation formation.
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 5/4/1982 (actual site observation date)
  • Air Photo ID: 7-46
  • Surface Water Kind: none observed
  • Plant Association Name: Douglas-fir-Tanoak Forest, very dry
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - tree cover
  • Site Obs. Cover Kind 2 - intermixed conifers and hardwoods
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
    • Vegetation Plot Plants
    Plant Symbol Scientific Name National Vernacular Name Plant Type Group Canopy Cover % Vegetation Stata Level

    LIDE3

    VAOV2

    PSME

    ARME

    Lithocarpus densiflorus

    Vaccinium ovatum

    Pseudotsuga menziesii

    Arbutus menziesii

    tanoak

    California huckleberry

    Douglas-fir

    Pacific madrone

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

    bedrock, lithic

    moderately coherent

    94 -

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

    ochric epipedon

    argillic horizon

    lithic contact

    0—29

    29—94

    94—

    —29—

    —65—

    —-
    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

    56

    —

    —

    610

    —

    180

    2150

    —

    270

    11

    14

    8

    —

    —

    —

    —

    —

    —

    —

    —
    Oi—0 to 4 centimeters (0.0 to 1.6 inches); slightly decomposed plant material; fragments; noneffervescent; abrupt wavy boundary.; moist when described; observed in pit, small
    Oe—4 to 5 centimeters (1.6 to 2.0 inches); moderately decomposed plant material; fragments; noneffervescent; abrupt wavy boundary.; moist when described; observed in pit, small
    A—5 to 29 centimeters (2.0 to 11.4 inches); dark brown (10YR 3/3) broken face, brown (10YR 5/3) broken face, dry; gravelly loam; 26 percent clay; weak medium subangular blocky structure; friable, slightly sticky, slightly plastic; moderate permeability; 10.0 medium roots and 10.0 fine roots and 0.5 coarse roots; 4.0 very fine tubular and 4.0 very fine irregular and 4.0 fine irregular and 4.0 fine tubular pores; 5 percent by volume moderately coherent cemented 20-47-75 millimeter sandstone, unspecified fragments and 15 percent by volume moderately coherent cemented 2-3-5 millimeter sandstone, unspecified fragments; noneffervescent; very strongly acid, pH 5.0, hellige-truog; clear wavy boundary. Lab sample # 10N03155; moist when described; observed in pit, small
    ABt—29 to 45 centimeters (11.4 to 17.7 inches); dark yellowish brown (10YR 3/4) broken face, yellowish brown (10YR 5/4) broken face, dry; gravelly clay loam; 27 percent clay; weak medium subangular blocky structure; friable, slightly sticky, slightly plastic; moderate permeability; 4.0 medium roots and 4.0 fine roots and 4.0 coarse roots; 4.0 very fine tubular and 4.0 very fine irregular and 4.0 medium tubular and 4.0 fine tubular pores; 8 percent by volume moderately coherent cemented 20-47-75 millimeter sandstone, unspecified fragments and 15 percent by volume moderately coherent cemented 2-3-5 millimeter sandstone, unspecified fragments; noneffervescent; strongly acid, pH 5.5, hellige-truog; abrupt wavy boundary. Lab sample # 10N03156; moist when described; observed in pit, small
    2BAt—45 to 61 centimeters (17.7 to 24.0 inches); brown (7.5YR 4/4) broken face, light brown (7.5YR 6/4) broken face, dry; very cobbly clay loam; 29 percent clay; weak fine subangular blocky structure; firm, moderately sticky, slightly plastic; moderate permeability; 0.5 very fine roots and 4.0 medium roots and 0.5 fine roots and 0.5 coarse roots; 0.5 very fine tubular and 0.5 very fine irregular and 0.5 fine tubular pores; 10 percent by volume moderately coherent cemented 20-47-75 millimeter sandstone, unspecified fragments and 20 percent by volume moderately coherent cemented 75-163-250 millimeter sandstone, unspecified fragments and 25 percent by volume moderately coherent cemented 2-3-5 millimeter sandstone, unspecified fragments; noneffervescent; strongly acid, pH 5.5, hellige-truog; clear wavy boundary. Lab sample # 10N03157; moist when described; observed in pit, small
    2Bt1—61 to 83 centimeters (24.0 to 32.7 inches); yellowish brown (10YR 5/6) broken face, very pale brown (10YR 7/4) broken face, dry; extremely cobbly clay loam; 32 percent clay; weak fine subangular blocky structure; firm, moderately sticky, moderately plastic; moderate permeability; 0.5 very fine roots and 4.0 medium roots and 0.5 fine roots and 0.5 coarse roots; 0.5 very fine tubular pores; 37 percent distinct clay films on all faces of peds; 15 percent by volume moderately coherent cemented 2-3-5 millimeter sandstone, unspecified fragments and 20 percent by volume moderately coherent cemented 20-47-75 millimeter sandstone, unspecified fragments and 50 percent by volume moderately coherent cemented 75-163-250 millimeter sandstone, unspecified fragments; noneffervescent; strongly acid, pH 5.5, hellige-truog; clear broken boundary. Lab sample # 10N03158; moist when described; observed in pit, small
    2Bt2—83 to 94 centimeters (32.7 to 37.0 inches); dark yellowish brown (10YR 4/4) broken face, light yellowish brown (10YR 6/4) broken face, dry; extremely gravelly clay loam; 32 percent clay; weak coarse subangular blocky structure; firm, moderately sticky, moderately plastic; moderate permeability; 0.5 medium roots and 0.5 fine roots; 0.5 very fine tubular pores; 37 percent distinct clay films on all faces of peds; fragments and 25 percent by volume moderately coherent cemented 20-47-75 millimeter sandstone, unspecified fragments and 50 percent by volume moderately coherent cemented 2-3-5 millimeter sandstone, unspecified fragments; noneffervescent; strongly acid, pH 5.5, hellige-truog; abrupt irregular boundary. Lab sample # 10N03159; moist when described; observed in pit, small
    2R—94 centimeters (37.0 inches); fragments; noneffervescent.; moist when described; observed in pit, small