IDENTIFIERS

  • Current Taxon Name (Soil Name): Nekken
  • OSD
  • Series Extent
  • User Site ID: S79PB935005
  • User Pedon ID: S79PB935005
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 80P0172
  • NCSS Pedon Lab Data NASIS Record ID - 47950
  • Print Date: 2/17/2025

    • 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: 7.4770583
  • Std. Longitude: 134.4841889
  • Datum: WGS84
  • Location Description: Palau; 2 mi N of the road to the Ngerimel reservoir, on the road to Nekken then about 300 feet N of the road.
  • MLRA: 195—Volcanic Islands of Central and Eastern Micronesia

    • PEDON

  • Describers Name: C. Smith
  • Current Taxonomic Class: Clayey-skeletal, mixed, active, isohyperthermic Typic Haplohumults
  • Current Taxon Kind: series
  • Pedon Type: OSD pedon
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from SSL-CMS data
  • Pedon #: 5
  • Correlated Information:
  • Soil Name - Nekken
  • PSC - 20 to 46 cm.
  • Classificaton Date - 6/30/2007
  • Soil Taxonomic Edition - tenth edition
  • Moisture Class - perudic
  • Moisture Subclass - typic
  • Sampled As Information:
  • Soil Name - Nekken
  • Classificaton Date - 11/1/1979
  • Dynamic Soil Properties:
  • Erosion Class - 0
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: saprolite derived from basalt over andesite over tuff breccia over bedded tuff
  • Landscape: island, upland
  • Landform: hill
  • Slope Complexity: complex
  • Runoff: very high
  • Drainage Class: well
  • Flooding: none flooding
  • Ponding: none ponding
  • Geology: Aimeliik formation.
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 11/1/1979 (actual site observation date)
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - tree cover
  • Site Obs. Cover Kind 2 - tropical
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
  • Site Erosion Accelerated: water erosion
    • Pedon Diagnostic Features
    Feature Kind Feature Depth L-H Feature Thickness L-RV-H
    cm

    fibric soil materials

    argillic horizon

    cambic horizon

    umbric epipedon

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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

    35

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    —

    —

    —

    3685

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    365

    27

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    Oi—0 to 3 centimeters (0.0 to 1.2 inches); slightly decomposed plant material; fragments. Udecomposed and partially decomposed forest litter.
    A—3 to 20 centimeters (1.2 to 7.9 inches); very dark brown (10YR 2/2) interior very gravelly silt loam; 20 percent sand; 65 percent silt; 15 percent clay; strong fine granular structure; friable, slightly sticky, slightly plastic; 5.5 very fine roots and 5.5 fine and medium roots; 5.5 very fine interstitial pores; fragments; slightly acid, pH 6.1, hellige-truog; clear wavy boundary. Lab sample # 80P00874. Common coarse roots; 50 percent by volume platy fragments of hard tuff 20 to 100 mm by 10 to 50 mm in size.; many very fine roots; many fine and medium roots
    Bt—20 to 46 centimeters (7.9 to 18.1 inches); dark yellowish brown (10YR 4/4) interior very gravelly silty clay loam; 10 percent sand; 56 percent silt; 34 percent clay; moderate very fine and fine subangular blocky structure; firm, moderately sticky, moderately plastic; 5.5 very fine roots and 5.5 fine and medium roots; 5.5 very fine interstitial pores; 37 percent faint dark brown (10YR 3/3), moist, coats on faces of peds and in pores; fragments; moderately acid, pH 6.0, hellige-truog; clear wavy boundary. Lab sample # 80P00875. Common coarse roots; 45 percent by volume platy fragments of hard tuff 20 to 100 mm by 10 to 50 mm in size.; common coats surface features on faces of peds and in pores; many very fine roots; many fine and medium roots
    C—46 to 56 centimeters (18.1 to 22.0 inches); very dark brown (10YR 2/2) interior very gravelly silt loam; 20 percent sand; 65 percent silt; 15 percent clay; massive; firm, slightly sticky, slightly plastic; 2.5 very fine and fine roots and 0.5 medium and coarse roots; 5.5 very fine interstitial and tubular pores; fragments; strongly acid, pH 5.4, hellige-truog; abrupt wavy boundary. Lab sample # 80P00876. 85 percent by volume platy, moderately hard, bedded tuff which is dug with difficulty with a spade, soil material fills cracks and joints between tuff fragments.; common very fine and fine roots; few medium and coarse roots
    R—56 to 81 centimeters (22.0 to 31.9 inches); black (10YR 2/1) interior and olive (5Y 4/3) interior bedrock; very hard; fragments. Bedded tuff with very fine phenocrysts of hornblend.