| *** Primary Characterization Data *** |
| Pedon ID: 91VI020008 | ( St. John, Virgin Islands ) | Print Date: Apr 23 2025 8:08AM |
| Sampled as on Sep 1, 1991: | Descalabrado ; Clayey, mixed, isohyperthermic, shallow Typic Argiustoll |
| Revised to correlated: | Susannaberg ; Clayey, vermiculitic, isohyperthermic, shallow Typic Haplustolls |
| United States Department of Agriculture | ||||
| SSL | - | Project | RP91VI270 ST JOHN, VIRGIN ISLANDS-REFERENCE | Natural Resources Conservation Service |
| - | Site ID | S1991VI020008 Lat: 18° 21' 10.00" north Long: 64° 45' 27.00" west MLRA: 271 | National Soil Survey Center | |
| - | Pedon No. | 91P1196 | Soil Survey Laboratory | |
| - | General Methods 1B1A, 2A1, 2B | Lincoln, Nebraska 68508-3866 | ||
| Layer | Horizon | Orig Hzn | Depth (cm) | Field Label 1 | Field Label 2 | Field Label 3 | Field Texture | Lab Texture |
| 91P07969 | A | A | 0-5 | CL | CL | |||
| 91P07970 | Bt | Bt | 5-23 | C | C | |||
| 91P07971 | BC | BC | 23-38 | C | CL | |||
| 91P07972 | Cr | CR | 38-50 | CL | ||||
| Pedon Calculations | |||
| Calculation Name | Result | Units of Measure | |
| CEC Activity, CEC7/Clay, Weighted Average | 0.96 | (NA) | |
| Clay, carbonate free, Weighted Average | 41 | % wt | |
| Weighted Particles, 0.1-75mm, 75 mm Base | 40 | % wt | |
| Volume, >2mm, Weighted Average | 14 | % vol | |
| Clay, total, Weighted Average | 41 | % wt | |
| Weighted averages based on control section: 5-23 cm | |||
| PSDA & Rock Fragments | -1- | -2- | -3- | -4- | -5- | -6- | -7- | -8- | -9- | -10- | -11- | -12- | -13- | -14- | -15- | -16- | -17- | -18- | |||
| (- - - - - Total - - - - - -) | (- - Clay - - -) | (- - - - Silt - - - - -) | (- - - - - - - - - - - - Sand - - - - - - - - - - - -) | ( Rock Fragments (mm) ) | |||||||||||||||||
| Lab | Clay | Silt | Sand | Fine | CO3 | Fine | Coarse | VF | F | M | C | VC | (- - - - - - - - Weight - - - - - - - -) | >2 mm | |||||||
| Text- | < | .002 | .05 | < | < | .002 | .02 | .05 | .10 | .25 | .5 | 1 | 2 | 5 | 20 | .1- | wt % | ||||
| Depth | ure | .002 | -.05 | -2 | .0002 | .002 | -.02 | -.05 | -.10 | -.25 | -.50 | -1 | -2 | -5 | -20 | -75 | 75 | whole | |||
| Layer | (cm) | Horz | Prep | (- - - - - - - - - - - - - - - - - - - - - - - - - - % of <2mm Mineral Soil - - - - - - - - - - - - - - - - - - - - - - - - - - -) | (- - - - - - - % of <75mm - - - - - -) | soil | |||||||||||||||
| 3A1a1a | 3A1a1a | 3A1a1a | 3A1a1a | 3A1a1a | 3A1a1a | 3A1a1a | 3A1a1a | 3A1a1a | 3A1a1a | 3A1a1a | 3B1 | 3B1 | 3B1 | ||||||||
| 91P07969 | 0-5 | A | S | cl | 36.5 | 31.2 | 32.3 | 23.1 | 8.1 | 5.4 | 5.7 | 6.6 | 7.7 | 6.9 | 10 | 10 | -- | 42 | 20 | ||
| 91P07970 | 5-23 | Bt | S | c | 41.3 | 29.7 | 29.0 | 25.0 | 4.7 | 5.7 | 6.8 | 6.4 | 5.9 | 4.2 | 4 | 14 | 4 | 40 | 22 | ||
| 91P07971 | 23-38 | BC | S | cl | 34.7 | 34.8 | 30.5 | 27.8 | 7.0 | 4.9 | 5.2 | 5.8 | 7.7 | 6.9 | 8 | 14 | 30 | 64 | 55 | ||
| 91P07972 | 38-50 | Cr | S | cl | 33.9 | 40.1 | 26.0 | 32.9 | 7.2 | 5.4 | 4.3 | 4.0 | 5.9 | 6.4 | 18 | 32 | -- | 60 | 91 | ||
| *** Primary Characterization Data *** |
| Pedon ID: 91VI020008 | ( St. John, Virgin Islands ) | Print Date: Apr 23 2025 8:08AM |
| Sampled As | : | Descalabrado | Clayey, mixed, isohyperthermic, shallow Typic Argiustoll | ||
| USDA-NRCS-NSSC-Soil Survey Laboratory | ; | Pedon No. 91P1196 | |||
| Bulk Density & Moisture | -1- | -2- | -3- | -4- | -5- | -6- | -7- | -8- | -9- | -10- | -11- | -12- | -13- | -14- | |||
| (Bulk Density) | Cole | (- - - - - - - - - - - Water Content - - - - - - - - - - -) | ( Air Dry-Oven Dry ) | WRD | Aggst | ||||||||||||
| 33 | Oven | Whole | 6 | 10 | 33 | 1500 | 1500 kPa | (- - - - Ratio - - - -) | Whole | Stabl | (- - Ratio/Clay - -) | ||||||
| Depth | kPa | Dry | Soil | kPa | kPa | kPa | kPa | Moist | Corrected | Soil | 2-0.5mm | CEC7 | 1500 kPa | ||||
| Layer | (cm) | Horz | Prep | (- - - g cm-3 - - -) | (- - - - - - - - - - - - pct of < 2mm - - - - - - - - - - - -) | cm3 cm-3 | % | ||||||||||
| 3C2a1a | 3D1 | 8D1 | 8D1 | ||||||||||||||
| 91P07969 | 0-5 | A | S | 20.5 | 1.053 | 1.14 | 0.56 | ||||||||||
| 91P07970 | 5-23 | Bt | S | 18.8 | 1.052 | 0.96 | 0.46 | ||||||||||
| 91P07971 | 23-38 | BC | S | 18.6 | 1.064 | 1.35 | 0.54 | ||||||||||
| 91P07972 | 38-50 | Cr | S | 18.3 | 1.069 | 1.49 | 0.54 | ||||||||||
| Carbon & Extractions | -1- | -2- | -3- | -4- | -5- | -6- | -7- | -8- | -9- | -10- | -11- | -12- | -13- | -14- | -15- | -16- | -17- | -18- | -19- | |||
| (- - - - - Total - - - - -) | Est | OC | C/N | (- - - Dith-Cit Ext - - -) | (- - - - - - Ammonium Oxalate Extraction - - - - - -) | (- - - Na Pyro-Phosphate - - -) | ||||||||||||||||
| Depth | C | N | S | OC | (WB) | Ratio | Fe | Al | Mn | Al+½Fe | ODOE | Fe | Al | Si | Mn | C | Fe | Al | Mn | |||
| Layer | (cm) | Horz | Prep | (- - - - - - - - - - % of <2 mm - - - - - - - - - -) | (- - - - - - - - - - - - - - - - - - - % of < 2mm - - - - - - - - - - - - - - - - -) | mg kg-1 | (- - - - - - % of < 2mm - - - - -) | |||||||||||||||
| 6B3a | 6A1c | |||||||||||||||||||||
| 91P07969 | 0-5 | A | S | 0.343 | 3.75 | |||||||||||||||||
| 91P07970 | 5-23 | Bt | S | 0.260 | 2.70 | |||||||||||||||||
| 91P07971 | 23-38 | BC | S | 0.100 | 0.90 | |||||||||||||||||
| 91P07972 | 38-50 | Cr | S | 0.069 | 0.63 | |||||||||||||||||
| CEC & Bases | -1- | -2- | -3- | -4- | -5- | -6- | -7- | -8- | -9- | -10- | -11- | -12- | -13- | -14- | |||
| (- - - - - - NH4OAC Extractable Bases - - - - -) | CEC8 | CEC7 | ECEC | (- - - - Base - - - -) | |||||||||||||
| Sum | Acid- | Extr | KCl | Sum | NH4 | Bases | Al | (- Saturation -) | |||||||||
| Depth | Ca | Mg | Na | K | Bases | ity | Al | Mn | Cats | OAC | +Al | Sat | Sum | NH4OAC | |||
| Layer | (cm) | Horz | Prep | (- - - - - - - - - - - - - - - - - cmol(+) kg-1 - - - - - - - - - - - - - - - - - - -) | mg kg-1 | (- - - - cmol(+) kg-1 - - -) | (- - - - - - - - % - - - - - - - -) | ||||||||||
| 6N2e | 6O2d | 6P2b | 6Q2b | 6H5a | 5A3a | 5A8b | 5C3 | 5C1 | |||||||||
| 91P07969 | 0-5 | A | S | 28.5 | 10.6 | 0.5 | 0.6 | 40.2 | 6.9 | 47.1 | 41.7 | 85 | 96 | ||||
| 91P07970 | 5-23 | Bt | S | 25.5 | 10.7 | 0.5 | 0.5 | 37.2 | 7.4 | 44.6 | 39.6 | 83 | 94 | ||||
| 91P07971 | 23-38 | BC | S | 29.9 | 13.3 | 0.8 | 0.3 | 44.3 | 6.5 | 50.8 | 46.9 | 87 | 94 | ||||
| 91P07972 | 38-50 | Cr | S | 31.2 | 16.0 | 0.9 | 0.4 | 48.5 | 6.6 | 55.1 | 50.5 | 88 | 96 | ||||
| *** Primary Characterization Data *** |
| Pedon ID: 91VI020008 | ( St. John, Virgin Islands ) | Print Date: Apr 23 2025 8:08AM |
| Sampled As | : | Descalabrado | Clayey, mixed, isohyperthermic, shallow Typic Argiustoll | ||
| USDA-NRCS-NSSC-Soil Survey Laboratory | ; | Pedon No. 91P1196 | |||
| Salt | -1- | -2- | -3- | -4- | -5- | -6- | -7- | -8- | -9- | -10- | -11- | -12- | -13- | -14- | -15- | -16- | -17- | -18- | -19- | -20- | |||
| (- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Water Extracted From Saturated Paste - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -) | 1:2 | ||||||||||||||||||||||
| Total | Elec | Elec | Exch | ||||||||||||||||||||
| Depth | Ca | Mg | Na | K | CO3 | HCO3 | F | Cl | PO4 | Br | OAC | SO4 | NO2 | NO3 | H2O | Salts | Cond | Cond | Na | SAR | |||
| Layer | (cm) | Horz | Prep | (- - - - - mmol(+) L-1 - - - - -) | (- - - - - - - - - - - - - - - - - - - - - - mmol(-) L-1 - - - - - - - - - - - - - - - - - - - -) | (- - - - % - - - -) | (- - dS m-1 - -) | % | |||||||||||||||
| 91P07969 | 0-5 | A | S | 1 | |||||||||||||||||||
| 91P07970 | 5-23 | Bt | S | 1 | |||||||||||||||||||
| 91P07971 | 23-38 | BC | S | 2 | |||||||||||||||||||
| 91P07972 | 38-50 | Cr | S | 2 | |||||||||||||||||||
| pH & Carbonates | -1- | -2- | -3- | -4- | -5- | -6- | -7- | -8- | -9- | -10- | -11- | |||
| (- - - - - - - - - - - - - - - - - - pH - - - - - - - - - - - - - - - - -) | (- - Carbonate - -) | (- - Gypsum - - -) | ||||||||||||
| CaCl2 | As CaCO3 | As CaSO4*2H2O | Resist | |||||||||||
| Depth | 0.01M | H2O | Sat | <2mm | <20mm | <2mm | <20mm | ohms | ||||||
| Layer | (cm) | Horz | Prep | KCl | 1:2 | 1:1 | Paste | Oxid | NaF | (- - - - - - - - - - - - % - - - - - - - - - - -) | cm-1 | |||
| 4C1a2a | 4C1a2a | |||||||||||||
| 91P07969 | 0-5 | A | S | 6.8 | 7.2 | |||||||||
| 91P07970 | 5-23 | Bt | S | 6.3 | 6.8 | |||||||||
| 91P07971 | 23-38 | BC | S | 6.1 | 6.8 | |||||||||
| 91P07972 | 38-50 | Cr | S | 6.0 | 6.5 | |||||||||
| Phosphorus | -1- | -2- | -3- | -4- | -5- | -6- | -7- | -8- | -9- | -10- | -11- | -12- | |||
| (- - - - - - - - - - - - - - - - - - - - - - - Phosphorus - - - - - - - - - - - - - - - - - - - - -) | KCl | ||||||||||||||
| Melanic | NZ | Acid | Anion Exch Resin | Bray | Bray | Olsen | H2O | Citric | Mehlich | Extr | |||||
| Depth | Index | Oxal | Available | Capacity | 1 | 2 | Acid | III | NO3 | ||||||
| Layer | (cm) | Horz | Prep | % | (- - - - - - - - - - - - - - - - - - - - - - - - - - - mg kg-1 - - - - - - - - - - - - - - - - - - - -) | ||||||||||
| 6S3 | |||||||||||||||
| 91P07969 | 0-5 | A | S | 2.0 | |||||||||||
| 91P07970 | 5-23 | Bt | S | 1.0 | |||||||||||
| 91P07971 | 23-38 | BC | S | 1.0 | |||||||||||
| 91P07972 | 38-50 | Cr | S | tr | |||||||||||
| *** Primary Characterization Data *** |
| Pedon ID: 91VI020008 | ( St. John, Virgin Islands ) | Print Date: Apr 23 2025 8:08AM |
| Sampled As | : | Descalabrado | Clayey, mixed, isohyperthermic, shallow Typic Argiustoll | ||
| USDA-NRCS-NSSC-Soil Survey Laboratory | ; | Pedon No. 91P1196 | |||
| Clay Mineralogy (<.002 mm) | -1- | -2- | -3- | -4- | -5- | -6- | -7- | -8- | -9- | -10- | -11- | -12- | -13- | -14- | -15- | -16- | -17- | -18- | |||
| X-Ray | Thermal | Elemental | EGME | Inter | |||||||||||||||||
| SiO2 | Al2O3 | Fe2O3 | MgO | CaO | K2O | Na2O | Retn | preta | |||||||||||||
| Depth | Fract | 7A2i | 7C3 | tion | |||||||||||||||||
| Layer | (cm) | Horz | ion | ( - - - - - - - - - peak size - - - - - - - - - - ) | (- - - - - - - - - % - - - - - - - - - -) | (- - - - - - - - - - - - - - - - - - - - - % - - - - - - - - - - - - - - - - - - - - -) | mg g-1 | ||||||||||||||
| 91P07970 | 5.0-23.0 | Bt | tcly | VR 3 | MT 2 | KK 2 | VC 2 | 18 | 10.2 | 0.6 | |||||||||||
| 91P07971 | 23.0-38.0 | BC | tcly | VR 4 | KK 2 | VC 1 | 20 | 10.0 | 0.4 | ||||||||||||
| 91P07972 | 38.0-50.0 | Cr | tcly | VR 4 | KK 2 | VC 1 | 19 | 9.4 | 0.4 | ||||||||||||
| FRACTION INTERPRETATION: | ||||
| tcly - Total Clay <0.002 mm | ||||
| MINERAL INTERPRETATION: | ||||
| KK Kaolinite | MT Montmorillonite | VC Vermiculite-Chlorite | VR Vermiculite | |
| RELATIVE PEAK SIZE: | 5 Very Large | 4 Large | 3 Medium | 2 Small | 1 Very Small | 6 No Peaks |