IDENTIFIERS

  • Current Taxon Name (Soil Name): Maresua
  • OSD
  • Series Extent
  • User Site ID: D00PR125001
  • User Pedon ID: D00PR125001
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - NSSL
  • Lab Pedon # - 01N1039
  • NCSS Pedon Lab Data NASIS Record ID - 14427
  • Print Date: 11/21/2024

    • 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: 18.0927778
  • Std. Longitude: -67.0494444
  • Datum: WGS84
  • Location Description: Maresua gravelly clay loam, 20 to 60 percent slopes; approximately 0.8 mile northwest of the city of San German downtown from the intersection of P.R. Hwy. 102 and P.R. Hwy. 347; about 0.1 mile north of the Aqueduct paved road at the farm facilities of the Interamerican University-San German Campus; about 50 feet east of road on forestland; San German Municipality. (USGS San German topographic quadrangle (1966); lat. 18 degrees 05 minutes 34 seconds N. and long. 67 degrees 02 minutes 58 seconds W).
  • Map Unit: MoD2—Maresua silty clay loam, 12 to 20 percent slopes, erodedMoF2—Maresua silty clay loam, 20 to 60 percent percent slopes, erodedMfF—Maresua gravelly clay loam, 20 to 60 percent slopes
  • Non-MLRA Soil Survey Area: PR684—Mayaguez Area, Puerto Rico Western PartPR787—San German Area, Southwestern Puerto Rico

    • PEDON

  • Describers Name: Jorge L. Lugo; Samuel Rios
  • Current Taxonomic Class: Clayey-skeletal, magnesic, isohyperthermic Typic Argiudolls
  • Current Taxon Kind: series
  • Pedon Type: OSD pedon
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: NASIS
  • Pedon #: 1
  • Correlated Information:
  • Soil Name - Maresua
  • PSC - 25 to 66 cm.
  • Classificaton Date - 2/27/2009
  • Soil Taxonomic Edition - tenth edition
  • Moisture Class - udic
  • Moisture Subclass - udic
  • Sampled As Information:
  • Soil Name - Maresua
  • Classificaton Date - 5/1/2000
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: residuum and colluvium that weathered from serpentinite bedrock
  • Landscape: serpentinitic mountains mountains, serpentinitic hills hills
  • Landform: mountain slope, hillslope
  • Geomorphic Component Hills: side slope
  • Geomorphic Component Mountains: mountainflank
  • Hill Slope Profile: backslope
  • Slope Position: middle third
  • Slope Complexity: simple
  • Slope Shape Across: convex
  • Slope Shape Down: linear
  • Drainage Pattern: dendritic
  • Runoff: high
  • Drainage Class: well
  • Flooding: none flooding
  • Ponding: none ponding
  • Bedrock: serpentinite at 66cm
  • Geology: Lower Cretaceous And Upper Jurassic member of the Serpentinite formation in the Kjs group.
  • Surface Fragments: 29.00 percent 2- to 75-millimeter serpentinite,
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 5/1/2000 (actual site observation date)
  • Air Photo ID: 6A
  • Surface Water Kind: none observed
  • 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
    • Pedon Restrictions
    Kind Hardness Restriction Depth L-H Restriction Thickness L-RV-H
    cm

    bedrock, paralithic

    bedrock, lithic

    —

    —

    66 - 116

    116 -

    —

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

    mollic epipedon

    argillic horizon

    paralithic contact

    lithic contact

    2—25

    25—66

    66—116

    116—

    18—23—52

    10—41—66

    —-

    —-
    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

    55

    —

    —

    110

    —

    140

    1459

    —

    365

    25.1

    26.4

    23.5

    —

    —

    —

    —

    —

    668757

    San German 4W

    Weather (NOAA)
    Oe/Oi—0 to 2 centimeters (0.0 to 0.8 inches); 25 percent sand; 41 percent silt; 34 percent clay; 18 percent by volume 2-50-75 millimeter serpentinite fragments; abrupt irregular boundary.; dry when described; observed in pit, large or quarry. The Oe/Oi is composed of leaves, needles, twigs, sticks, and barks.
    A—2 to 10 centimeters (0.8 to 3.9 inches); very dark grayish brown (10YR 3/2) broken face, very dark gray (10YR 3/1) broken face, dry; gravelly clay loam; 41 percent sand; 30 percent silt; 29 percent clay; moderate fine granular structure; slightly hard, firm, slightly sticky, moderately plastic; moderate permeability; 6.0 very fine roots throughout and 6.0 medium roots throughout and 6.0 fine roots throughout and 0.5 coarse roots throughout; 6.0 very fine vesicular and 6.0 very fine irregular pores; 29 percent by volume 2-50-75 millimeter serpentinite fragments; noneffervescent, by hcl, 1n; neutral, pH 7.0, hellige-truog; clear smooth boundary.; dry when described; observed in pit, large or quarry
    AB—10 to 25 centimeters (3.9 to 9.8 inches); very dark grayish brown (10YR 3/2) broken face, very dark gray (10YR 3/1) broken face, dry; extremely gravelly clay loam; 28 percent sand; 35 percent silt; 37 percent clay; moderate medium subangular blocky, and moderate fine subangular blocky structure; slightly hard, firm, slightly sticky, moderately plastic; moderate permeability; 3.0 medium roots throughout and 3.0 fine roots throughout and 0.5 coarse roots throughout; 3.0 fine irregular and 0.5 fine tubular pores; 25 percent prominent dark reddish brown (5YR 3/3), moist, and dark reddish brown (5YR 3/3), dry, clay films on surfaces along pores and 25 percent prominent clay films on all faces of peds; 80 percent by volume 2-50-75 millimeter serpentinite fragments; noneffervescent, by hcl, 1n; neutral, pH 7.0, hellige-truog; clear smooth boundary.; dry when described; observed in pit, large or quarry
    Bt—25 to 66 centimeters (9.8 to 26.0 inches); dark reddish brown (5YR 3/3) broken face, dark reddish brown (5YR 3/2) broken face, dry; extremely paragravelly clay; 27 percent sand; 31 percent silt; 42 percent clay; weak fine subangular blocky structure; slightly hard, firm, slightly sticky, moderately plastic; moderate permeability; 6.0 medium roots around fragments and 6.0 fine roots around fragments and 6.0 coarse roots around fragments; 0.5 very fine irregular pores; 25 percent distinct clay films on all faces of peds; 80 percent by volume 2-50-75 millimeter serpentinite fragments; noneffervescent, by hcl, 1n; neutral, pH 7.0, hellige-truog; abrupt wavy boundary.; dry when described; observed in pit, large or quarry
    Cr—66 to 116 centimeters (26.0 to 45.7 inches); fragments; abrupt smooth boundary.; dry when described; observed in pit, large or quarry. The Cr layer is composed of soft semiconsolidated serpentinite bedrock that can be excavated with difficulty with hand tools, and is rippable by mechanized equipment.
    R—116 centimeters (45.7 inches); fragments.; dry when described; observed in pit, large or quarry. The R layer is composed of hard consolidated serpentinite bedrock.