IDENTIFIERS

  • Current Taxon Name (Soil Name): Agfayan
  • OSD
  • Series Extent
  • User Site ID: 83GQ066002
  • User Pedon ID: 83GQ066002
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 84P0209
  • NCSS Pedon Lab Data NASIS Record ID - 53903
  • 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: 13.2527781
  • Std. Longitude: 144.7277832
  • Datum: WGS84
  • Location Description: Guam. South facing Rd. cut along the E side of the Rd. to the Ija Experiment Station about 1/4 km from Hway.
  • State: Guam
  • MLRA: 181—Arctic Foothills

    • PEDON

  • Describers Name: F. J. Young J. L. Demeterio
  • Current Taxonomic Class: Clayey, smectitic, isohyperthermic Udorthentic Haplustolls
  • Current Taxon Kind: series
  • Pedon Type: classifies to current taxon name, full description
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from SSL-CMS data
  • Pedon #: 2
  • Correlated Information:
  • Soil Name - Agfayan
  • Classificaton Date - 7/11/2007
  • Moisture Class - udic
  • Moisture Subclass - udic
  • Sampled As Information:
  • Soil Name - Agfayan
  • Taxonomic Class - Very-fine, montmorillonitic, isohyperthermic Paral
  • Taxon Kind - series
  • Classificaton Date - 9/1/1983
  • Moisture Class - ustic
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Landform: hillside or mountainside
  • Slope Shape Down: convex
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 9/1/1983 (actual site observation date)
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - grass/herbaceous cover
  • 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

    mollic epipedon

    0—20

    —-
    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

    20

    —

    —

    35

    —

    180

    260

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    Oi—0 to 2 centimeters (0.0 to 0.8 inches); undecomposed organic matter; fragments. Undecomposed swordgrass litter. Covers about 30% of soil surface. Not in close contact with soil.
    A1—2 to 12 centimeters (0.8 to 4.7 inches); black (10YR 2/1) interior, black (10YR 2/1) interior, dry; clay; moderate coarse prismatic, and moderate fine subangular blocky structure; very hard, very firm, very sticky, very plastic; 5.5 very fine and fine roots; 5.5 very fine interstitial and 0.5 very fine tubular pores; fragments; slightly acid, pH 6.1, hellige-truog; clear smooth boundary. Lab sample # 84P01085. Thin intermittent surface layer with fine granular structure. Cracks up to 1 cm wide between prisms. Intermittent patches of fine gravel on about 10% of surface.; many very fine and fine roots
    A2—12 to 22 centimeters (4.7 to 8.7 inches); black (10YR 2/1) interior, black (10YR 2/1) interior, dry; gravelly clay; moderate coarse prismatic, and moderate fine subangular blocky structure; very hard, very firm, very sticky, very plastic; 5.5 very fine and fine roots; 0.5 tubular and 5.5 interstitial pores; fragments; moderately acid, pH 5.8, hellige-truog; gradual smooth boundary. Lab sample # 84P01086. Gravel content 15 to 20% gravels can be crushed into coarse sand and rubbed to sandy loam. Cracks between prisms are less than 1 cm wide.; many very fine and fine roots
    A/Cr—22 to 37 centimeters (8.7 to 14.6 inches); black (10YR 2/1) interior and yellowish brown (10YR 5/4) interior gravelly clay; moderate fine subangular blocky structure; very hard, very firm, very sticky, very plastic; 5.5 very fine and fine roots; 15 percent , moist, clay films on faces of peds; fragments; moderately acid, pH 6.0, hellige-truog; gradual irregular boundary. Lab sample # 84P01087. Black when dry and fractured saprolitic tuff about 50% of each. Saprolite is stained black along fractures. Roots penetrate along fractures. Saprolite can be crushed to coarse sand.; few clay films surface features on faces of peds; many very fine and fine roots
    Cr—37 to 154 centimeters (14.6 to 60.6 inches); yellowish brown (10YR 5/4) interior weathered bedrock; 5.5 very fine roots; fragments; slightly acid, pH 6.4, hellige-truog. Lab sample # 84P01088. Very pale brown when dry. Can be chipped with spade. Occasional deep fractures which contain black to yellowish brown clay and saprolitic fine gravel.; many very fine roots