IDENTIFIERS

  • Current Taxon Name (Soil Name): Melones
  • OSD
  • Series Extent
  • User Site ID: D97PR023003
  • User Pedon ID: D97PR023003
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - NSSL
  • Lab Pedon # - 97P0480
  • NCSS Pedon Lab Data NASIS Record ID - 10163
  • 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: 17.9791667
  • Std. Longitude: -67.1711111
  • Datum: WGS84
  • Location Description: Melones clay, 2 to 12 percent slopes; approximately 2.7 miles east of El Combate community on PR Hwy. 301 at the Cabo Rojo National Wildlife Refuge facilities at Boqueron; about 1.2 miles southwest from the intersection of PR Hwy. 301 and PR Hwy. 3003; about 100 feet east in hay filed; Cabo Rojo Municipality. (USGS Cabo Rojo topographic quadrangle (1966); lat. 17 degrees 58 minutes 45 seconds W. and long. 67 degrees 10 minutes 16 seconds W.)
  • Map Unit: FvB—Fraternidad clay, gravelly clay substratum, 2 to 5 percent slope sMnC—Melones clay, 2 to 12 percent slopes
  • Non-MLRA Soil Survey Area: PR687—Lajas Valley Area, Puerto RicoPR787—San German Area, Southwestern Puerto Rico

    • PEDON

  • Describers Name: Jorge L. Lugo; Carmen L. Santiago and Greg Brannon
  • Current Taxonomic Class: Fine, smectitic, isohyperthermic Chromic Calcitorrerts
  • Current Taxon Kind: series
  • Pedon Type: OSD pedon
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: NASIS
  • Pedon #: 3
  • Correlated Information:
  • Soil Name - Melones
  • PSC - 25 to 100 cm.
  • Classificaton Date - 2/27/2009
  • Soil Taxonomic Edition - tenth edition
  • Moisture Class - aridic (torric)
  • Moisture Subclass - aridic (torric)
  • Sampled As Information:
  • Soil Name - Melones
  • Classificaton Date - 6/17/1997
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Landscape: coastal plain
  • Landform: alluvial fan
  • Slope Complexity: simple
  • Slope Shape Across: linear
  • Slope Shape Down: convex
  • Drainage Pattern: parallel
  • Runoff: medium
  • Drainage Class: well
  • Flooding: none flooding
  • Ponding: none ponding
  • Geology: Holocene And Pleistocene member of the Alluvium formation in the Qal group.
  • Surface Fragments: 7.00 percent 2- to 75-millimeter mixed,
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 6/17/1997 (actual site observation date)
  • Air Photo ID: 9A
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - grass/herbaceous cover
  • Site Obs. Cover Kind 2 - other grass/herbaceous cover
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
  • Current Weather - sunny
    • Pedon Horizon Lab Results - 1
    Horizon Top Depth Bottom Depth Sample ID Data Collector Total Clay CaCO3 Clay Total Silt Fine Silt Co. Silt Total Sand Total Sand Method VC Sand Co. Sand Med. Sand Fine Sand VF Sand VF Sand Method Texture Class - Field Lab Rubbed Fiber Unrubbed Fiber pH H2O
    cm cm % % % % % % % % % % % % %

    Ap

    Ap

    Btss

    Btss

    Btk1

    Btk1

    Btk2

    Btk2

    Bt1

    Bt1

    Bt2

    Bt2

    2C

    2C

    0

    0

    17

    17

    46

    46

    95

    95

    117

    117

    168

    168

    179

    179

    17

    17

    46

    46

    95

    95

    117

    117

    168

    168

    179

    179

    200

    200

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    Pedon Horizon Lab Results - 2
    Horizon Top Depth Bottom Depth Sample ID pH CaCl2 pH NaF pH Ox Delta pH LL PL PI Atter. Samp. Cond. COLE Pot. Acidity Ca + Mg - Meh 2 K Ca + Mg - Sat. Paste KCl Extract. Acidity Base Sat. - Meh 2 CEC-7 CEC-8.2
    cm cm % % % cm/cm meq/100g cmol(+)/kg cmol(+)/kg mmol(+)/l cmol(+)/kg % cmol(+)/kg cmol(+)/kg

    Ap

    Ap

    Btss

    Btss

    Btk1

    Btk1

    Btk2

    Btk2

    Bt1

    Bt1

    Bt2

    Bt2

    2C

    2C

    0

    0

    17

    17

    46

    46

    95

    95

    117

    117

    168

    168

    179

    179

    17

    17

    46

    46

    95

    95

    117

    117

    168

    168

    179

    179

    200

    200

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    Pedon Horizon Lab Results - 3
    Horizon Top Depth Bottom Depth Sample ID ECEC Phosphate P NO3-N EC EC Method EC 1:5 by volume CaCO3 Equiv. Equiv. Gypsum Na SAR Gypsum Req. Humic Color Fulvic Color Humic + Fulvic Color Al PI Pyro. Hue PyrO. Value Pyro. Chroma
    cm cm cmol(+)/kg mg/kg mg/kg dS/m dS/m % % mmol(+)/l % L-pcu/g L-pcu/g L-pcu/g %

    Ap

    Ap

    Btss

    Btss

    Btk1

    Btk1

    Btk2

    Btk2

    Bt1

    Bt1

    Bt2

    Bt2

    2C

    2C

    0

    0

    17

    17

    46

    46

    95

    95

    117

    117

    168

    168

    179

    179

    17

    17

    46

    46

    95

    95

    117

    117

    168

    168

    179

    179

    200

    200

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    ec meter, saturated paste

    ec meter, saturated paste

    ec meter, saturated paste

    ec meter, saturated paste

    ec meter, saturated paste

    ec meter, saturated paste

    ec meter, saturated paste

    ec meter, saturated paste

    ec meter, saturated paste

    ec meter, saturated paste

    ec meter, saturated paste

    ec meter, saturated paste

    ec meter, saturated paste

    ec meter, saturated paste

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    2

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    14

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    9

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    9

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    11

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    27

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    1

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    5

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    22

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    28

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    31

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

    ochric epipedon

    argillic horizon

    slickensides

    calcic horizon

    0—17

    17—179

    17—46

    46—117

    15—17—30

    38—45—79

    15—28—46

    25—45—76
    Site Soil Temperature
    Site Obs. Date Depth Sensor Kind Temperature
    cm C

    6/17/1997

    50

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    28
    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

    2

    —

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    9

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    220

    668

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    365

    26.5

    28.1

    24.6

    28

    29.4

    26

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    2066

    Combate Station

    NRCS-NWCC SCAN
    Ap—0 to 17 centimeters (0.0 to 6.7 inches); dark brown (10YR 3/3) broken face clay; 25 percent sand; 22 percent silt; 54 percent clay; strong medium granular structure; hard, firm, moderately sticky, moderately plastic; 7.0 very fine roots throughout and 7.0 fine roots throughout; 7.0 very fine interstitial pores; 7 percent by volume 2-?-75 millimeter mixed fragments; moderately alkaline, pH 8.0, pH meter; clear wavy boundary.; moderately dry when described; observed in pit, small
    Btss—17 to 46 centimeters (6.7 to 18.1 inches); brown (10YR 4/3) broken face clay; 26 percent sand; 23 percent silt; 51 percent clay; strong medium angular blocky structure; hard, firm, moderately sticky, moderately plastic; 3.0 medium roots throughout and 7.0 fine roots throughout; 7.0 very fine tubular and 1.0 very fine tubular and 1.0 fine vesicular and 7.0 fine vesicular pores; 30 percent faint slickensides (pedogenic); 1 percent by volume 2-?-75 millimeter mixed fragments; moderately alkaline, pH 8.1, pH meter; clear wavy boundary.; moderately dry when described; observed in pit, small
    Btk1—46 to 95 centimeters (18.1 to 37.4 inches); dark brown (7.5YR 3/4) broken face clay; 33 percent sand; 20 percent silt; 47 percent clay; moderate medium angular blocky structure; hard, firm, moderately sticky, moderately plastic; 3.0 medium roots throughout and 7.0 fine roots throughout; 7.0 very fine tubular and 3.0 very fine tubular and 7.0 fine vesicular and 3.0 fine vesicular pores; 60 percent prominent carbonate masses throughout; 5 percent by volume 2-?-75 millimeter mixed fragments; moderately alkaline, pH 8.3, pH meter; gradual wavy boundary.; moderately dry when described; observed in pit, small
    Btk2—95 to 117 centimeters (37.4 to 46.1 inches); brown (7.5YR 4/4) broken face clay; 32 percent sand; 22 percent silt; 46 percent clay; strong medium subangular blocky structure; hard, firm, moderately sticky, moderately plastic; 1.0 medium roots throughout; 3.0 very fine tubular and 7.0 very fine tubular and 3.0 fine vesicular and 7.0 fine vesicular pores; 30 percent distinct carbonate masses throughout; 5 percent by volume 2-?-75 millimeter mixed fragments; moderately alkaline, pH 8.1, pH meter; clear wavy boundary.; moderately dry when described; observed in pit, small
    Bt1—117 to 168 centimeters (46.1 to 66.1 inches); brown (7.5YR 4/4) broken face clay; 27 percent sand; 21 percent silt; 52 percent clay; moderate medium subangular blocky structure; hard, firm, moderately sticky, moderately plastic; 1.0 medium roots throughout and 1.0 fine roots throughout; 3.0 very fine tubular and 7.0 very fine tubular and 3.0 fine vesicular and 7.0 fine vesicular pores; 3 percent by volume 2-?-75 millimeter mixed fragments; moderately alkaline, pH 8.1, pH meter; clear wavy boundary.; moderately dry when described; observed in pit, small
    Bt2—168 to 179 centimeters (66.1 to 70.5 inches); strong brown (7.5YR 4/6) broken face gravelly clay; 48 percent sand; 15 percent silt; 37 percent clay; weak medium subangular blocky structure; slightly hard, friable, slightly sticky, slightly plastic; 1.0 medium roots throughout and 1.0 fine roots throughout; 3.0 very fine tubular and 7.0 very fine tubular and 3.0 fine vesicular and 7.0 fine vesicular pores; 30 percent by volume 2-?-75 millimeter mixed fragments; moderately alkaline, pH 8.2, pH meter; abrupt wavy boundary.; moderately dry when described; observed in pit, small
    2C—179 to 200 centimeters (70.5 to 78.7 inches); yellowish brown (10YR 5/6) broken face clay; 33 percent sand; 26 percent silt; 41 percent clay; massive; slightly hard, friable, slightly sticky, slightly plastic; 1.0 very fine tubular and 7.0 very fine tubular and 1.0 fine vesicular and 7.0 fine vesicular pores; 3 percent by volume 2-?-75 millimeter mixed fragments; moderately alkaline, pH 8.1, pH meter.; moderately dry when described; observed in pit, small