IDENTIFIERS

  • Current Taxon Name (Soil Name): Tectah
  • OSD
  • Series Extent
  • User Site ID: S1984CA605REDW020
  • User Pedon ID: S10CA023006
  • Vegetation Plot ID: S1984CA605REDW020
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 10N0677
  • NCSS Pedon Lab Data NASIS Record ID - 43145
  • Print Date: 12/11/2024

    • 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: 41.2149688
  • Std. Longitude: -124.0514585
  • Datum: WGS84
  • Township: 10N
  • Range: 1E
  • Section: 34
  • PLSS Details: northeast quarter, northwest quarter
  • Location Description: Redwood National Park, Humboldt County, California; skid trail 75 ft west of c-13 road; 3000 ft south of A-9-9/l-line junction; a-9 deck.
  • Map Unit: 560—Trailhead, 15 to 30 percent slopes
  • 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-B1—Rodgers Peak, California

    • PEDON

  • Describers Name: Jim Popenoe & Roy Martin
  • Current Taxonomic Class: Fine, mixed, semiactive, isomesic Typic Palehumults
  • Current Taxon Kind: series
  • Pedon Type: classifies to current taxon name, full description
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: NASIS
  • Pedon #: 6
  • Correlated Information:
  • Soil Name - Tectah
  • PSC - 34 to 84 cm.
  • Classificaton Date - 7/1/2010
  • Soil Taxonomic Edition - tenth edition
  • Moisture Class - udic
  • Moisture Subclass - udic
  • Sampled As Information:
  • Soil Name - Tectah
  • Taxonomic Class - Fine, mixed, semiactive, isomesic Typic Palehumult
  • Taxon Kind - series
  • Classificaton Date - 3/22/1984
  • Dynamic Soil Properties:
  • Erosion Class - 0
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: colluvium and residuum derived from schist
  • Landscape: mountains
  • Landform: mountain slope
  • Geomorphic Component Mountains: mountainflank, center third
  • Hill Slope Profile: backslope
  • Slope Complexity: complex
  • Slope Shape Across: convex
  • Slope Shape Down: convex
  • Runoff: high
  • Drainage Class: well
  • Flooding: none flooding
  • Ponding: none ponding
  • Bedrock: schist, unspecified
  • Geology: Franciscan Formation formation.
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 3/22/1984 (actual site observation date)
  • Air Photo ID: 4-18
  • Surface Water Kind: none observed
  • Plant Association Name: Redwood Forest, second growth
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - tree cover
  • Site Obs. Cover Kind 2 - conifers
  • 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

    SESE3

    TSHE

    PSME

    RHODO

    GASH

    MANE2

    POMU

    BLSP

    VAPA

    GAYLU

    Lithocarpus densiflorus

    Sequoia sempervirens

    Tsuga heterophylla

    Pseudotsuga menziesii

    Rhododendron

    Gaultheria shallon

    Mahonia nervosa

    Polystichum munitum

    Blechnum spicant

    Vaccinium parvifolium

    Gaylussacia

    tanoak

    redwood

    western hemlock

    Douglas-fir

    rhododendron

    salal

    Cascade barberry

    western swordfern

    deer fern

    red huckleberry

    huckleberry

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

    ochric epipedon

    argillic horizon

    0—40

    40—198

    —34—

    —158—
    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

    27

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    300

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    3

    2160

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    275

    11

    14

    9

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    Oi—0 to 6 centimeters (0.0 to 2.4 inches); slightly decomposed plant material; loose, loose, nonsticky, nonplastic; rapid permeability; fragments; abrupt smooth boundary.; moist when described; observed in pit, small
    A—6 to 23 centimeters (2.4 to 9.1 inches); dark brown (7.5YR 3/4) broken face, brown (7.5YR 5/4) broken face, dry; gravelly silt loam; 24 percent clay; weak fine granular, and weak coarse subangular blocky parts to weak medium subangular blocky structure; slightly hard, friable, slightly sticky, slightly plastic; moderate permeability; 3.0 very fine roots and 1.0 medium roots and 2.0 fine roots; 3.0 very fine irregular and 3.0 medium tubular and 3.0 fine irregular and 1.0 coarse tubular pores; 16 percent by volume nonflat subangular very strongly coherent cemented 2-38-75 millimeter schist, unspecified fragments; noneffervescent; moderately acid, pH 6.0, pH meter; clear wavy boundary. Lab sample # 10N03101; moist when described; observed in pit, small
    AB—23 to 40 centimeters (9.1 to 15.7 inches); dark brown (7.5YR 3/4) broken face, strong brown (7.5YR 5/6) broken face, dry; silty clay loam; 35 percent clay; weak coarse subangular blocky parts to weak medium subangular blocky structure; very hard, friable, moderately sticky, slightly plastic; moderately slow permeability; 3.0 very fine roots and 2.0 medium roots and 3.0 fine roots and 1.0 coarse roots; 3.0 very fine irregular and 3.0 medium tubular and 3.0 fine irregular and 1.0 coarse tubular pores; 3 percent by volume nonflat subangular very strongly coherent cemented 2-38-75 millimeter schist, unspecified fragments; noneffervescent, pH meter; clear wavy boundary. Lab sample # 10N03102; moist when described; observed in pit, small
    BAt—40 to 67 centimeters (15.7 to 26.4 inches); strong brown (7.5YR 4/6) broken face, brownish yellow (10YR 6/6) broken face, dry; silty clay loam; 28 percent clay; weak coarse subangular blocky structure; hard, friable, moderately sticky, slightly plastic; moderately slow permeability; 2.0 very fine roots and 2.0 medium roots and 2.0 fine roots and 1.0 coarse roots; 3.0 very fine irregular and 2.0 medium tubular and 3.0 fine irregular and 1.0 coarse tubular pores; 7 percent distinct clay films on surfaces along pores and 8 percent distinct clay films on all faces of peds; 11 percent by volume nonflat subangular very strongly coherent cemented 2-38-75 millimeter schist, unspecified fragments; noneffervescent; moderately acid, pH 6.0, pH meter; clear wavy boundary. Lab sample # 10N03103; moist when described; observed in pit, small
    Bt1—67 to 100 centimeters (26.4 to 39.4 inches); yellowish brown (10YR 5/8) broken face, brownish yellow (10YR 6/6) broken face, dry; silty clay loam; 36 percent clay; weak very coarse subangular blocky parts to weak coarse subangular blocky structure; hard, firm, moderately sticky, slightly plastic; moderately slow permeability; 1.0 very fine roots and 2.0 medium roots and 1.0 fine roots and 1.0 coarse roots; 2.0 very fine tubular and 2.0 very fine irregular and 1.0 medium tubular and 1.0 fine tubular and 2.0 fine irregular pores; 17 percent distinct clay films on all faces of peds and 20 percent distinct clay films on surfaces along pores; 14 percent by volume nonflat subangular very strongly coherent cemented 2-38-75 millimeter schist, unspecified fragments; noneffervescent, pH meter; gradual wavy boundary. Lab sample # 10N03104; moist when described; observed in pit, small
    Bt2—100 to 175 centimeters (39.4 to 68.9 inches); strong brown (7.5YR 5/8) broken face, brownish yellow (10YR 6/6) broken face, dry; gravelly silty clay loam; 39 percent clay; weak very coarse subangular blocky structure; hard, firm, moderately sticky, moderately plastic; moderately slow permeability; 0.5 very fine roots and 0.5 medium roots and 0.5 fine roots; 2.0 very fine tubular and 2.0 very fine irregular and 1.0 medium tubular and 1.0 fine tubular and 2.0 fine irregular pores; 17 percent distinct clay films on all faces of peds and 20 percent distinct clay films on surfaces along pores; 18 percent by volume nonflat subangular very strongly coherent cemented 2-38-75 millimeter schist, unspecified fragments; noneffervescent, pH meter; gradual smooth boundary. Lab sample # 10N03105; moist when described; observed in pit, small
    Bt3—175 to 198 centimeters (68.9 to 78.0 inches); yellowish red (5YR 5/8) broken face, reddish yellow (7.5YR 6/6) broken face, dry; gravelly silty clay; 45 percent clay; weak very coarse subangular blocky structure; very hard, firm, moderately sticky, moderately plastic; moderately slow permeability; 0.5 very fine roots and 0.5 medium roots and 0.5 fine roots; 2.0 very fine irregular and 1.0 very fine tubular and 1.0 fine tubular and 2.0 fine irregular pores; 17 percent faint clay films on all faces of peds and 20 percent faint clay films on surfaces along pores; 27 percent by volume nonflat subangular very strongly coherent cemented 2-38-75 millimeter schist, unspecified fragments; noneffervescent, pH meter. Lab sample # 10N03106; moist when described; observed in pit, small