IDENTIFIERS

  • Current Taxon Name (Soil Name): Cristal
  • OSD
  • Series Extent
  • User Site ID: S1993PR119002
  • User Pedon ID: 93PR119002
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 93P0432
  • NCSS Pedon Lab Data NASIS Record ID - 65775
  • 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: 18.3243618
  • Std. Longitude: -65.8158340
  • Datum: WGS84
  • Location Description: 100 cm west and 203 cm north of 08.03.33 on the El Verde LTER, Caribbean National Forest, Puerto Rico.
  • State: Puerto Rico
  • MLRA: 270—Humid Mountains and Valleys
  • Non-MLRA Soil Survey Area: PR700—El Yunque National Forest, Puerto Rico

    • PEDON

  • Describers Name: John Davis, Roy Vick, Warren Lynn, Bruce Dubee, and Henry Mount
  • Current Taxon Kind: series
  • Pedon Type: map unit inclusion
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from PDP 3.x
  • Pedon #: 2
  • Sampled As Information:
  • Soil Name - Cristal
  • Taxonomic Class - Clayey, mixed Aquic Haplohumults
  • PSC - 8 to 90 cm.
  • Classificaton Date - 2/23/1993
  • Moisture Class - udic
  • Dynamic Soil Properties:
  • Erosion Class - 1
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Landscape: mountains
  • Landform: mountainside
  • Microfeature: tree-tip mound
  • Geomorphic Component Hills: side slope
  • Hill Slope Profile: backslope
  • Slope Position: on a slope
  • Slope Shape Across: linear
  • Slope Shape Down: linear
  • Runoff: medium
  • Drainage Class: somewhat poorly
  • Flooding: none flooding
  • Ponding: none ponding
  • Surface Fragments: 15.00 percent
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 2/23/1993 (actual site observation date)
  • Microrelief Elevation: 15
  • Plant Association Name: Tabanuco Forest
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - tree cover
  • Site Obs. Cover Kind 2 - intermixed conifers and 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—8

    8—90

    —-

    —-
    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

    21

    —

    —

    303

    —

    280

    2032

    —

    —

    —

    —

    —

    22.2

    —

    —

    —

    —

    —

    —

    —
    Oi—0 to 1 centimeters (0.0 to 0.4 inches); very dark grayish brown (10YR 3/2) Error; very friable; fragments; abrupt broken boundary. Lab sample # 93P03295; moist when described;
    AB—1 to 9 centimeters (0.4 to 3.5 inches); yellowish brown (10YR 5/6) clay; 5 percent reddish yellow (7.5YR 6/6) fine distinct mottles; moderate medium subangular blocky structure; friable; 2.0 fine roots throughout; 5 percent distinct very dark grayish brown (10YR 3/2) organic stains throughout; fragments; very strongly acid, pH 4.5, hellige-truog; clear wavy boundary. Lab sample # 93P03296; moist when described;
    Bt1—9 to 31 centimeters (3.5 to 12.2 inches); brownish yellow (10YR 6/6) clay; 5 percent light brownish gray (2.5Y 6/2) medium prominent and 25 percent strong brown (7.5YR 5/6) fine faint mottles; moderate medium subangular blocky structure; friable; 1.0 medium roots throughout and 2.0 fine roots throughout; clay films on faces of peds; 15 percent coarse very dark grayish brown (10YR 3/2) worm casts throughout; fragments; very strongly acid, pH 4.5, hellige-truog; clear wavy boundary. Lab sample # 93P03297; moist when described;
    Bt2—31 to 51 centimeters (12.2 to 20.1 inches); brownish yellow (10YR 6/6) clay; 1 percent grayish brown (2.5Y 5/2) medium distinct and 1 percent strong brown (7.5YR 5/6) fine distinct mottles; moderate medium subangular blocky structure; friable; 1.0 medium roots throughout and 2.0 fine roots throughout; clay films on faces of peds; 20 percent coarse very dark grayish brown (10YR 3/2) worm casts throughout; fragments; very strongly acid, pH 4.5, hellige-truog; clear smooth boundary. Lab sample # 93P03298; moist when described;
    Bt3—51 to 91 centimeters (20.1 to 35.8 inches); brownish yellow (10YR 6/6) clay; 5 percent light yellowish brown (10YR 6/4) fine faint and 5 percent reddish yellow (7.5YR 6/6) fine distinct mottles; weak fine and medium subangular blocky structure; friable; clay films on faces of peds; fragments; very strongly acid, pH 4.5, hellige-truog; clear smooth boundary. Lab sample # 93P03299; moist when described;
    BC—91 to 131 centimeters (35.8 to 51.6 inches); yellowish red (5YR 5/6) and red (2.5YR 4/6) and brownish yellow (10YR 6/6) clay; weak coarse subangular blocky structure; friable; fragments; slightly acid, pH 6.5, hellige-truog. Lab sample # 93P03300; moist when described;