IDENTIFIERS

  • Current Taxon Name (Soil Name): Tannin
  • OSD
  • Series Extent
  • User Site ID: 02CA601011
  • User Pedon ID: 02CA601011
  • Vegetation Plot ID: 02CA601011
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - NSSL
  • Lab Pedon # - 05N0130
  • NCSS Pedon Lab Data NASIS Record ID - 18223
  • Print Date: 4/26/2025

    • 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: 40.0880556
  • Std. Longitude: -123.6269444
  • Datum: WGS84
  • Township: 4s
  • Range: 5E
  • Section: 28
  • Map Unit: 402—Tannin-Wohly-Rockyglen complex, 50 to 75 percent slopes
  • State: California
  • County: CA023—Humboldt
  • MLRA: 5—Siskiyou-Trinity Area
  • Non-MLRA Soil Survey Area: CA601—Humboldt County, South Part, California
  • 7.5 Minute USGS Quad: 40123-A6—Harris, California

    • PEDON

  • Describers Name: Jonathan W. Hooper
  • Current Taxonomic Class: Fine-loamy, mixed, superactive, mesic Typic Dystroxerepts
  • Current Taxon Kind: series
  • Pedon Type: OSD pedon
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: NASIS
  • Pedon #: 11
  • Correlated Information:
  • Soil Name - Tannin (flagged as OSD)
  • PSC - 12 to 62 cm.
  • Classificaton Date - 4/1/2013
  • Classifier - Jonathan Hooper
  • Soil Taxonomic Edition - twelfth edition
  • Moisture Class - xeric
  • Moisture Subclass - typic
  • Sampled As Information:
  • Soil Name - Tannin
  • Classificaton Date - 4/22/2002
  • Dynamic Soil Properties:
  • Erosion Class - 1
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: slope alluvium derived from sandstone
  • Landscape: mountains
  • Landform: mountain slope
  • Geomorphic Component Mountains: mountainflank, upper third
  • Hill Slope Profile: backslope
  • Slope Position: upper third
  • Slope Complexity: simple
  • Slope Shape Across: concave
  • Slope Shape Down: concave
  • Runoff: negligible
  • Drainage Class: well
  • Flooding: none flooding
  • Ponding: none ponding
  • Bedrock: strongly coherent sandstone, unspecified
  • Geology: Central Belt, Franciscan formation.
  • Surface Fragments: 15.00 percent nonflat subangular strongly coherent cemented 2- to 75-millimeter sandstone, unspecified,
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 4/22/2002 (actual site observation date)
  • Air Photo ID: 6250-178
  • Surface Water Kind: none observed
  • Plant Association Name: tanoak, Douglas-fir
  • 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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    Pedon Diagnostic Features
    Feature Kind Feature Depth L-H Feature Thickness L-RV-H
    cm

    ochric epipedon

    argillic horizon

    0—12

    12—200

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    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

    74

    —

    —

    341

    —

    55

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    —

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    Oi—0 to 2 centimeters (0.0 to 0.8 inches); gravelly slightly decomposed plant material; nonsticky, nonplastic; fragments; noneffervescent; slightly acid, pH 6.1, pH meter; abrupt smooth boundary.; observed in cut
    A—2 to 14 centimeters (0.8 to 5.5 inches); light yellowish brown (10YR 6/4) crushed, dark brown (10YR 3/3) crushed, moist; very gravelly loam; 22 percent clay; moderate medium granular structure; soft, very friable, slightly sticky, slightly plastic; 4.0 very fine roots throughout and 3.0 fine roots throughout; 37 percent by volume nonflat subrounded strongly coherent cemented 2-20-75 millimeter sandstone, unspecified fragments; noneffervescent; moderately acid, pH 5.9, pH meter; abrupt smooth boundary.; moist when described; observed in cut
    Bt1—14 to 37 centimeters (5.5 to 14.6 inches); light yellowish brown (10YR 6/4) crushed, brown (7.5YR 4/3) crushed, moist; gravelly loam; 24 percent clay; moderate very fine subangular blocky structure; soft, friable, slightly sticky, slightly plastic; 3.0 very fine roots throughout and 1.0 medium roots throughout and 2.0 fine roots throughout; 0.5 very fine low-continuity dendritic tubular pores; 30 percent distinct clay films on all faces of peds; 23 percent by volume nonflat subrounded strongly coherent cemented 2-25-75 millimeter sandstone, unspecified fragments; noneffervescent; moderately acid, pH 6.0, pH meter; clear smooth boundary.; moist when described; observed in cut. patchy - phpvsfiid 236993; patchy - phpvsfiid 236993
    Bt2—37 to 68 centimeters (14.6 to 26.8 inches); light yellowish brown (10YR 6/4) crushed, brown (7.5YR 4/4) crushed, moist; gravelly loam; 23 percent clay; weak very fine subangular blocky structure; slightly hard, friable, slightly sticky, slightly plastic; 3.0 very fine roots throughout and 1.0 medium roots throughout and 2.0 fine roots throughout and 0.5 coarse roots throughout; 0.5 very fine low-continuity dendritic tubular pores; 50 percent distinct clay films on all faces of peds; 30 percent by volume nonflat subrounded strongly coherent cemented 2-25-75 millimeter sandstone, unspecified fragments; noneffervescent; moderately acid, pH 6.0, pH meter; clear wavy boundary.; moist when described; observed in cut. patchy - phpvsfiid 236994; patchy - phpvsfiid 236994
    Bt3—68 to 108 centimeters (26.8 to 42.5 inches); light yellowish brown (10YR 6/4) crushed, dark yellowish brown (10YR 4/4) crushed, moist; gravelly loam; 22 percent clay; weak medium subangular blocky, and weak fine subangular blocky structure; slightly hard, friable, slightly sticky, slightly plastic; 2.0 very fine roots throughout and 0.5 medium roots throughout and 1.0 fine roots throughout and 0.5 coarse roots throughout; 1.0 very fine low-continuity dendritic tubular pores; 35 percent faint clay films on all faces of peds; 33 percent by volume nonflat subrounded strongly coherent cemented 2-25-75 millimeter sandstone, unspecified fragments; noneffervescent; moderately acid, pH 5.7, pH meter; gradual smooth boundary.; moist when described; observed in cut. patchy - phpvsfiid 236995; patchy - phpvsfiid 236995
    Bt4—108 to 172 centimeters (42.5 to 67.7 inches); yellow (10YR 8/6) crushed, yellowish brown (10YR 5/4) crushed, moist; gravelly loam; 21 percent clay; weak very fine subangular blocky structure; moderately hard, firm, moderately sticky, moderately plastic; 0.5 very fine roots throughout and 1.0 fine roots throughout and 0.5 coarse roots throughout; 0.5 very fine low-continuity dendritic tubular pores; 30 percent faint clay films on all faces of peds; 1 percent by volume nonflat subrounded strongly coherent cemented 75-150-250 millimeter sandstone, unspecified fragments and 31 percent by volume nonflat subrounded strongly coherent cemented 2-35-75 millimeter sandstone, unspecified fragments; noneffervescent; moderately acid, pH 5.9, pH meter; gradual smooth boundary.; moist when described; observed in cut. patchy - phpvsfiid 236996; patchy - phpvsfiid 236996
    Bt5—172 to 200 centimeters (67.7 to 78.7 inches); yellow (10YR 8/6) crushed, yellowish brown (10YR 5/4) crushed, moist; gravelly loam; 21 percent clay; weak very fine subangular blocky structure; moderately hard, firm, moderately sticky, moderately plastic; 0.5 very fine roots throughout and 0.5 medium roots throughout and 0.5 fine roots throughout; 25 percent faint clay films on all faces of peds; 1 percent by volume nonflat subrounded strongly coherent cemented 75-150-250 millimeter sandstone, unspecified fragments and 30 percent by volume nonflat subrounded strongly coherent cemented 2-35-75 millimeter sandstone, unspecified fragments; noneffervescent; moderately acid, pH 5.9, pH meter.; moist when described; observed in cut. patchy - phpvsfiid 236997; patchy - phpvsfiid 236997