IDENTIFIERS

  • Current Taxon Name (Soil Name): Yorknorth
  • OSD
  • Series Extent
  • User Site ID: 02CA601028
  • User Pedon ID: 02CA601028
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Pedon # - 09N0110
  • NCSS Pedon Lab Data NASIS Record ID - 20251
  • Print Date: 12/4/2024

    • 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: 40.1562583
  • Std. Longitude: -123.7648889
  • Datum: WGS84
  • Map Unit: 673—Coolyork-Yorknorth complex, 30 to 50 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-B7—Miranda, California

    • PEDON

  • Describers Name: JWH/JME
  • Current Taxonomic Class: Fine, mixed, superactive, thermic Oxyaquic Argixerolls
  • Current Taxon Kind: series
  • Pedon Type: representative pedon for component
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: NASIS
  • Pedon #: 28
  • Correlated Information:
  • Soil Name - Yorknorth
  • PSC - 22 to 130 cm.
  • Classificaton Date - 11/7/2011
  • Soil Taxonomic Edition - tenth edition
  • Moisture Class - xeric
  • Moisture Subclass - typic
  • Sampled As Information:
  • Soil Name - Yorknorth
  • Classificaton Date - 6/11/2002
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: residuum weathered from mudstone and/or slope alluvium derived from mudstone
  • Slope Complexity: complex
  • Slope Shape Across: linear
  • Slope Shape Down: concave
  • Runoff: very high
  • Drainage Class: moderately well
  • Flooding: none flooding
  • Ponding: none ponding
  • Geology: Franciscan -melange group .
  • Surface Fragments: 2.00 percent nonflat subangular strongly coherent cemented 2- to 75-millimeter argillite, 2.00 percent nonflat subangular strongly coherent cemented 75- to 250-millimeter argillite,
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 6/11/2002 (actual site observation date)
  • Air Photo ID: 6248-117
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - grass/herbaceous cover
  • Site Obs. Cover Kind 2 - rangeland, grassland
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
  • Current Air Temp - 25
    • Pedon Diagnostic Features
    Feature Kind Feature Depth L-H Feature Thickness L-RV-H
    cm

    mollic epipedon

    argillic horizon

    aquic conditions

    0—30

    30—128

    73—178

    —30—

    —98—

    —105—
    Site Soil Temperature
    Site Obs. Date Depth Sensor Kind Temperature
    cm C

    6/11/2002

    50

    —

    12
    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

    40

    —

    —

    535

    —

    25

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    A—0 to 6 centimeters (0.0 to 2.4 inches); brown (10YR 5/3), very dark grayish brown (10YR 3/2), moist; loam; 23 percent clay; strong fine granular structure; slightly hard, very friable, slightly sticky, moderately plastic; moderate excavation difficulty; 4.0 very fine roots throughout and 1.0 medium roots throughout and 2.0 fine roots throughout; 2 percent by volume nonflat subangular strongly coherent cemented 2-25-75 millimeter sandstone, unspecified fragments; noneffervescent; slightly acid, pH 6.2; abrupt smooth boundary. Lab sample # 03N04461; observed in pit, small
    ABt—6 to 30 centimeters (2.4 to 11.8 inches); brown (10YR 5/3), very dark grayish brown (10YR 3/2), moist; loam; 23 percent clay; 1 percent light yellowish brown (10YR 6/4) fine spherical mottles; strong medium subangular blocky structure; slightly hard, very friable, slightly sticky, very plastic; high excavation difficulty; 2.0 very fine roots throughout and 1.0 medium roots throughout and 1.0 fine roots throughout; 0.1 very fine tubular pores; 40 percent faint clay films on all faces of peds; 2 percent by volume nonflat subangular strongly coherent cemented 2-25-75 millimeter sandstone, unspecified fragments; noneffervescent; moderately acid, pH 6.0; abrupt smooth boundary. Lab sample # 03N04462; observed in pit, small. continuous - phpvsfiid 452035; continuous - phpvsfiid 452035
    Bt1—30 to 73 centimeters (11.8 to 28.7 inches); light yellowish brown (2.5Y 6/4), olive brown (2.5Y 4/3), moist; clay loam; 37 percent clay; 1 percent light yellowish brown (10YR 6/4) fine spherical mottles; moderate medium subangular blocky structure; moderately hard, friable, moderately sticky, very plastic; high excavation difficulty; 0.5 very fine roots throughout and 1.0 medium roots throughout and 1.0 fine roots throughout; 0.5 very fine tubular pores; 80 percent distinct clay films on all faces of peds; 2 percent by volume nonflat subangular strongly coherent cemented 2-25-75 millimeter sandstone, unspecified fragments; noneffervescent; moderately acid, pH 5.6; abrupt smooth boundary. Lab sample # 03N04462; observed in pit, small. discontinuous - phpvsfiid 452029; discontinuous - phpvsfiid 452029
    Bt2—73 to 83 centimeters (28.7 to 32.7 inches); light olive brown (2.5Y 5/4), brown (10YR 4/3), moist; clay; 42 percent clay; 1 percent light yellowish brown (10YR 6/4) fine spherical mottles; weak coarse subangular blocky structure; very hard, firm, very sticky, very plastic; high excavation difficulty; 0.5 very fine roots throughout and 1.0 medium roots throughout and 0.5 fine roots throughout; 0.5 very fine tubular pores; 50 percent distinct clay films on all faces of peds; 5 percent fine faint irregular noncoherent cemented light yellowish brown (10YR 6/4), moist, iron-manganese masses throughout; 5 percent by volume nonflat subangular strongly coherent cemented 2-25-75 millimeter sandstone, unspecified fragments; noneffervescent; moderately acid, pH 5.8; clear smooth boundary. Lab sample # 03N04462; observed in pit, small. patchy - phpvsfiid 452033; patchy - phpvsfiid 452033
    Bt3—83 to 118 centimeters (32.7 to 46.5 inches); light olive brown (2.5Y 5/4), brown (10YR 4/3), moist; clay; 42 percent clay; weak coarse subangular blocky structure; very hard, firm, very sticky, very plastic; high excavation difficulty; 25 percent distinct clay films on all faces of peds and 25 percent distinct pressure faces on all faces of peds; 5 percent fine faint irregular noncoherent cemented light yellowish brown (10YR 6/4), moist, iron-manganese masses with clear boundaries throughout; 5 percent by volume nonflat subangular strongly coherent cemented 2-25-75 millimeter sandstone, unspecified fragments; noneffervescent; moderately acid, pH 5.6; gradual smooth boundary. Lab sample # 03N04463; observed in auger, bucket. patchy - phpvsfiid 452030; patchy - phpvsfiid 452040; patchy - phpvsfiid 452030; patchy - phpvsfiid 452040
    Bt4—118 to 128 centimeters (46.5 to 50.4 inches); light yellowish brown (2.5Y 6/4), brown (10YR 4/3), moist; clay; 42 percent clay; weak coarse subangular blocky structure; very hard, firm, very sticky, very plastic; high excavation difficulty; 25 percent distinct pressure faces on all faces of peds and 25 percent distinct clay films on all faces of peds; 5 percent fine faint irregular noncoherent cemented light yellowish brown (10YR 6/4), moist, iron-manganese masses with clear boundaries throughout; 34 percent by volume nonflat angular strongly coherent cemented 2-25-75 millimeter sandstone, unspecified fragments; noneffervescent; moderately acid, pH 5.6; gradual wavy boundary. Lab sample # 03N04464; observed in auger, bucket. patchy - phpvsfiid 452041; patchy - phpvsfiid 452042; patchy - phpvsfiid 452041; patchy - phpvsfiid 452042
    BCt—128 to 180 centimeters (50.4 to 70.9 inches); light yellowish brown (2.5Y 6/4), brown (10YR 4/3), moist; clay loam; 38 percent clay; weak coarse subangular blocky structure; very hard, firm, very sticky, very plastic; high excavation difficulty; 10 percent distinct clay films on all faces of peds; 34 percent by volume nonflat angular strongly coherent cemented 2-25-75 millimeter mudstone fragments; noneffervescent; moderately acid, pH 6.0. Lab sample # 03N04465; observed in auger, bucket. patchy - phpvsfiid 452044; patchy - phpvsfiid 452044