IDENTIFIERS

  • Current Taxon Name (Soil Name): Gibsoncreek
  • OSD
  • Series Extent
  • User Site ID: 04CA601284
  • User Pedon ID: 04CA601284
  • Vegetation Plot ID: 04CA601284
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - NSSL
  • Lab Pedon # - 05N0138
  • NCSS Pedon Lab Data NASIS Record ID - 18231
  • Print Date: 2/16/2025

    • 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: 40.0855556
  • Std. Longitude: -123.9452778
  • Datum: WGS84
  • Location Description: Barnum Timber Property near Huckleberry gate
  • Map Unit: 577—Redwohly-Gibsoncreek-Sproulish complex, 15 to 30 percent slopes
  • State: California
  • County: CA023—Humboldt
  • MLRA: 4—California Coastal Redwood Belt
  • Non-MLRA Soil Survey Area: CA601—Humboldt County, South Part, California
  • 7.5 Minute USGS Quad: 40123-A8—Briceland, California

    • PEDON

  • Describers Name: Jonathan W. Hooper
  • Current Taxonomic Class: Fine-loamy, isotic, isomesic Dystric Haplustepts
  • Current Taxon Kind: series
  • Pedon Type: OSD pedon
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: NASIS
  • Pedon #: 284
  • Correlated Information:
  • Soil Name - Gibsoncreek
  • PSC - 29 to 68 cm.
  • Classificaton Date - 11/7/2011
  • Soil Taxonomic Edition - tenth edition
  • Moisture Class - ustic
  • Moisture Subclass - typic
  • Sampled As Information:
  • Soil Name - Gibsoncreek
  • Classificaton Date - 5/6/2004
  • Dynamic Soil Properties:
  • Erosion Class - 1
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: colluvium derived from sandstone and/or residuum weathered from sandstone
  • Landscape: mountains
  • Landform: mountain slope, ridge
  • Geomorphic Component Mountains: mountainflank, upper third
  • Hill Slope Profile: backslope
  • Slope Complexity: simple
  • Slope Shape Across: linear
  • Slope Shape Down: linear
  • Runoff: high
  • Drainage Class: well
  • Flooding: none flooding
  • Ponding: none ponding
  • Geology: Franciscan Complex formation.
  • Surface Fragments: 2.00 percent subrounded strongly coherent cemented 2- to 15-millimeter sandstone, unspecified,
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 5/6/2004 (actual site observation date)
  • Air Photo ID: 6246-153
  • Plant Association Name: Douglas fir-Tanoak forest
  • 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

    PSME

    ARME

    Lithocarpus densiflorus

    Pseudotsuga menziesii

    Arbutus menziesii

    tanoak

    Douglas-fir

    Pacific madrone

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    —

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    —

    —

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

    ochric epipedon

    cambic horizon

    0—18

    18—125

    10—20—25

    15—107—125
    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

    37

    —

    —

    425

    —

    240

    2160

    —

    260

    11

    —

    —

    10

    —

    —

    —

    —

    —

    —

    —
    Oi—0 to 4 centimeters (0.0 to 1.6 inches); 75 percent very dark brown (7.5YR 2.5/2) and 25 percent pinkish gray (7.5YR 6/2), black (7.5YR 2.5/1) rubbed, moist; fragments; noneffervescent; abrupt smooth boundary.; observed in pit, small
    A—4 to 18 centimeters (1.6 to 7.1 inches); brown (7.5YR 4/2), very dark brown (7.5YR 2.5/2), moist; sandy clay loam; 21 percent clay; moderate medium granular structure; slightly hard, very friable, nonsticky, nonplastic; moderate permeability; 2.0 very fine roots throughout; 10 percent by volume subangular strongly coherent cemented 2-20-75 millimeter sandstone, unspecified fragments; noneffervescent; moderately acid, pH 5.8; abrupt smooth boundary.; moist when described; observed in pit, small
    Bt1—18 to 52 centimeters (7.1 to 20.5 inches); brown (7.5YR 5/3), brown (7.5YR 4/3), moist; sandy clay loam; 23 percent clay; weak medium subangular blocky parts to moderate medium granular structure; moderately hard, friable, nonsticky, slightly plastic; moderate permeability; 2.0 very fine roots throughout and 2.0 medium roots throughout and 2.0 fine roots throughout; 1.0 very fine low-continuity tubular pores; 60 percent faint clay films on all faces of peds; 10 percent by volume subangular strongly coherent cemented 2-20-75 millimeter sandstone, unspecified fragments; noneffervescent; moderately acid, pH 5.6; clear smooth boundary.; moist when described; observed in pit, small. patchy - phpvsfiid 269002; patchy - phpvsfiid 269002
    Bt2—52 to 70 centimeters (20.5 to 27.6 inches); brown (7.5YR 5/4), brown (7.5YR 4/4), moist; sandy clay loam; 24 percent clay; weak medium subangular blocky structure; moderately hard, friable, slightly sticky, slightly plastic; moderate permeability; 2.0 medium roots throughout and 2.0 fine roots throughout and 1.0 coarse roots throughout; 0.5 very fine low-continuity tubular pores; 60 percent distinct clay films on surfaces along pores and 60 percent distinct clay films on all faces of peds; 8 percent by volume subangular strongly coherent cemented 2-20-75 millimeter sandstone, unspecified fragments; noneffervescent; moderately acid, pH 5.8; clear wavy boundary.; moist when described; observed in pit, small. patchy - phpvsfiid 269003; patchy - phpvsfiid 269004; patchy - phpvsfiid 269003; patchy - phpvsfiid 269004
    Bt3—70 to 110 centimeters (27.6 to 43.3 inches); light yellowish brown (10YR 6/4), strong brown (7.5YR 4/6), moist; gravelly sandy clay loam; 27 percent clay; weak medium subangular blocky structure; moderately hard, friable, slightly sticky, slightly plastic; moderately slow permeability; 1.0 medium roots around fragments and 1.0 fine roots around fragments and 2.0 coarse roots around fragments; 0.5 very fine low-continuity tubular pores; 50 percent distinct clay films on all faces of peds and 50 percent distinct clay films on surfaces along pores; 29 percent by volume subangular strongly coherent cemented 2-20-75 millimeter sandstone, unspecified fragments; noneffervescent; moderately acid, pH 5.6; clear wavy boundary.; moist when described; observed in pit, small. patchy - phpvsfiid 269005; patchy - phpvsfiid 269006; patchy - phpvsfiid 269005; patchy - phpvsfiid 269006
    Bt4—110 to 125 centimeters (43.3 to 49.2 inches); light yellowish brown (10YR 6/4), yellowish brown (10YR 5/6), moist; very gravelly sandy clay loam; 26 percent clay; weak medium subangular blocky parts to weak medium granular structure; moderately hard, friable, slightly sticky, slightly plastic; moderate permeability; 50 percent distinct clay films on all faces of peds and 50 percent distinct clay films on surfaces along pores; 27 percent by volume subangular moderately coherent cemented 2-20-75 millimeter sandstone, unspecified fragments and 30 percent by volume subangular strongly coherent cemented 2-20-75 millimeter sandstone, unspecified fragments; noneffervescent; moderately acid, pH 5.6; clear wavy boundary.; moist when described; observed in pit, small. patchy - phpvsfiid 269011; patchy - phpvsfiid 269012; patchy - phpvsfiid 269011; patchy - phpvsfiid 269012
    C1—125 to 155 centimeters (49.2 to 61.0 inches); light yellowish brown (2.5Y 6/4), yellowish brown (10YR 5/4), moist; very gravelly sandy clay loam; 26 percent clay; structureless massive; slightly hard, very friable, nonsticky, nonplastic; moderate permeability; 5 percent faint clay films on surfaces along pores; 10 percent by volume subangular strongly coherent cemented 2-20-75 millimeter sandstone, unspecified fragments and 30 percent by volume subangular moderately coherent cemented 2-20-75 millimeter sandstone, unspecified fragments; noneffervescent; moderately acid, pH 5.8; gradual smooth boundary.; moist when described; observed in pit, small. patchy - phpvsfiid 269014; patchy - phpvsfiid 269014
    C2—155 to 200 centimeters (61.0 to 78.7 inches); light yellowish brown (2.5Y 6/4), yellowish brown (10YR 5/4), moist; extremely gravelly sandy clay loam; 23 percent clay; structureless massive; slightly hard, very friable, nonsticky, nonplastic; moderate permeability; 30 percent by volume subangular strongly coherent cemented 2-20-75 millimeter sandstone, unspecified fragments and 35 percent by volume subangular moderately coherent cemented 2-20-75 millimeter sandstone, unspecified fragments; noneffervescent; moderately acid, pH 5.8.; moist when described; observed in pit, small