IDENTIFIERS

  • Current Taxon Name (Soil Name): Maho Bay
  • OSD
  • Series Extent
  • User Site ID: S1988VI030001
  • User Pedon ID: 88VI030001
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 88P0390
  • NCSS Pedon Lab Data NASIS Record ID - 60508
  • Print Date: 4/29/2025

    • 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: 18.3236103
  • Std. Longitude: -64.9013901
  • Datum: WGS84
  • Location Description: St. Thomas, VI, 2 km SE of Pearson Gardens, Central St. Thomas USGS Quad (1:24000). Atlas Sheet 12.
  • State: Virgin Islands
  • County: VI030—St. Thomas
  • MLRA: 271—Semiarid Mountains and Valleys

    • PEDON

  • Describers Name: D. Williams and R. Rollings
  • Current Taxonomic Class: Clayey-skeletal, mixed, superactive, isohyperthermic Typic Ustropepts
  • Current Taxon Kind: taxadjunct
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from SSL-CMS data
  • Pedon #: 1
  • Correlated Information:
  • Soil Name - Maho Bay
  • PSC - 7 to 35 cm.
  • Classificaton Date - 2/1/2010
  • Moisture Class - ustic
  • Sampled As Information:
  • Soil Name - Cramer
  • Taxonomic Class - Clayey-skeletal, mixed, isohyperthermic Typic Hapl
  • Taxon Kind - series
  • Classificaton Date - 2/1/1988
  • Moisture Class - ustic
  • Dynamic Soil Properties:
  • Erosion Class - 1
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Landscape: hills
  • Landform: hillside or mountainside
  • Slope Position: middle third
  • Slope Shape Down: convex
  • Runoff: high
  • Drainage Class: somewhat excessively
  • Surface Fragments: 70.00 percent
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 2/1/1988 (actual site observation date)
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - tree cover
  • Site Obs. Cover Kind 2 - hardwoods
  • 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

    ochric epipedon

    argillic horizon

    0—7

    7—35

    —-

    —-
    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

    25

    —

    —

    60

    —

    225

    38

    —

    —

    —

    —

    —

    —

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    —

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    1A—0 to 7 centimeters (0.0 to 2.8 inches); dark reddish brown (5YR 3/3) interior clay loam; 33 percent clay; moderate fine subangular blocky, and moderate fine granular structure; hard, friable, moderately sticky, moderately plastic; 2.5 medium roots and 2.5 fine roots throughout; fragments; neutral, pH 6.6, cresol red; clear smooth boundary. Lab sample # 88P01996; dry when described;. common medium roots; common fine roots throughout
    1Bt—7 to 35 centimeters (2.8 to 13.8 inches); dusky red (10R 3/4) interior very gravelly clay; 45 percent clay; moderate medium subangular blocky, and moderate fine subangular blocky structure; hard, firm, moderately sticky, moderately plastic; 2.5 medium roots and 2.5 fine roots throughout; 2.5 fine tubular pores; 55 percent distinct dusky red (10R 3/4) clay films on all faces of peds; 5 percent by volume 250-425-600 millimeter mixed fragments and 10 percent by volume 2-39-75 millimeter mixed fragments and 25 percent by volume 75-162-250 millimeter mixed fragments; neutral, pH 6.6, cresol red; clear wavy boundary. Lab sample # 88P01997; dry when described;. many clay films surface features on vertical and horizontal faces of peds; common medium roots; common fine roots throughout; continuous - phpvsfiid 232599; continuous - phpvsfiid 232599
    1R&Bt—35 to 106 centimeters (13.8 to 41.7 inches); dusky red (10R 3/4) interior clay loam; 2.5 fine roots around fragments; fragments; neutral, pH 6.8, cresol red. Lab sample # 88P01998; dry when described;. Highly fractured hard bedrock. Fracture 1 to 10 cm with clay loam between fracture (most fractures are 3 to 5 cm). Bt occupies 2-3% of horizon and is (10R 3/4) clay loam. Bedrock tilted 50 to 70 degrees.; common fine roots matted around stones
    1R—106 to 175 centimeters (41.7 to 68.9 inches); fragments. Hard fractured bedrock. Fractures 10 to 40 cm. Few roots between fractures.