*** Primary Characterization Data ***
Pedon ID: 91VI020013( St. John, Virgin Islands )Print Date: Apr 23 2025 8:08AM

Sampled as on Sep 1, 1991:Isaac ; Fine, mixed, isohyperthermic Typic Haplustoll
Revised to correlated:Susannaberg ; Fine-loamy, mixed, superactive, isohyperthermic Typic Haplustolls
United States Department of Agriculture
SSL-ProjectRP91VI270   ST JOHN, VIRGIN ISLANDS-REFERENCENatural Resources Conservation Service
-Site IDS1991VI020013   Lat: 18° 21' 16.00" north  Long: 64° 45' 5.99" west  MLRA: 271National Soil Survey Center
-Pedon No. 91P1201Soil Survey Laboratory
-General Methods 1B1A, 2A1, 2BLincoln, Nebraska 68508-3866
LayerHorizonOrig HznDepth (cm)Field Label 1Field Label 2Field Label 3Field TextureLab Texture
 
91P07986AA0-8C C
91P07987BwBw8-38C C
91P07988BCBC38-62C L
Pedon Calculations
Calculation NameResultUnits of Measure
 
CEC Activity, CEC7/Clay, Weighted Average1.39(NA)
Clay, carbonate free, Weighted Average32% wt
Weighted Particles, 0.1-75mm, 75 mm Base66% wt
Volume, >2mm, Weighted Average42% vol
Clay, total, Weighted Average32% wt
 
Weighted averages based on control section: 25-62 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) )
LabClaySiltSandFineCO3FineCoarseVFFMCVC(- - - - - - - - Weight - - - - - - - -)>2 mm
Text-<.002.05<<.002.02.05.10.25.512520.1-wt %
Depthure.002-.05-2.0002.002-.02-.05-.10-.25-.50-1-2-5-20-7575whole
Layer(cm)HorzPrep(- - - - - - - - - - - - - - - - - - - - - - - - - - % of <2mm Mineral Soil - - - - - - - - - - - - - - - - - - - - - - - - - - -)(- - - - - - - % of <75mm - - - - - -)soil
3A1a1a3A1a1a3A1a1a3A1a1a3A1a1a3A1a1a3A1a1a3A1a1a3A1a1a3A1a1a3A1a1a3B13B13B1
 
91P079860-8ASc43.134.022.928.95.13.64.24.45.15.641484126
91P079878-38BwSc42.135.322.630.25.15.84.54.64.73.035163824
91P0798838-62BCSl26.229.544.324.05.57.88.810.311.46.0837258170


*** Primary Characterization Data ***
Pedon ID: 91VI020013( St. John, Virgin Islands )Print Date: Apr 23 2025 8:08AM
Sampled As:IsaacFine, mixed, isohyperthermic Typic Haplustoll
USDA-NRCS-NSSC-Soil Survey Laboratory;Pedon No.  91P1201
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 )WRDAggst
33OvenWhole6103315001500 kPa(- - - - Ratio - - - -)WholeStabl(- - Ratio/Clay - -)
DepthkPaDrySoilkPakPakPakPaMoistCorrectedSoil2-0.5mm CEC71500 kPa
Layer(cm)HorzPrep (- - - g cm-3 - - -) (- - - - - - - - - - - - pct of < 2mm - - - - - - - - - - - -) cm3 cm-3%
3C2a1a3D18D18D1
 
91P079860-8AS25.81.0560.970.60
91P079878-38BwS22.71.0591.010.54
91P0798838-62BCS18.21.0611.590.69
Carbon  &  Extractions-1--2--3--4--5--6--7--8--9--10--11--12--13--14--15--16--17--18--19-
 
(- - - - - Total - - - - -)EstOCC/N(- - - Dith-Cit Ext - - -)(- - - - - - Ammonium Oxalate Extraction - - - - - -)(- - - Na Pyro-Phosphate - - -)
DepthCNSOC(WB)RatioFeAlMnAl+½FeODOEFeAlSiMnCFeAlMn
Layer(cm)HorzPrep(- - - - - - - - - - % of <2 mm - - - - - - - - - -)(- - - - - - - - - - - - - - - - - - - % of < 2mm - - - - - - - - - - - - - - - - -)mg kg-1(- - - - - - % of < 2mm - - - - -)
6B3a6A1c
 
91P079860-8AS0.4544.18
91P079878-38BwS0.2552.09
91P0798838-62BCS0.0760.59
CEC  &  Bases-1--2--3--4--5--6--7--8--9--10--11--12--13--14-
 
(- - - - - - NH4OAC Extractable Bases - - - - -)CEC8CEC7ECEC(- - - - Base - - - -)
SumAcid-ExtrKClSumNH4BasesAl(- Saturation -)
DepthCaMgNaKBasesityAlMnCatsOAC+AlSatSumNH4OAC
Layer(cm)HorzPrep(- - - - - - - - - - - - - - - - - cmol(+) kg-1 - - - - - - - - - - - - - - - - - - -)mg kg-1(- - - - cmol(+) kg-1 - - -)(- - - - - - - - % - - - - - - - -)
6N2e6O2d6P2b6Q2b6H5a5A3a5A8b5C35C1
 
91P079860-8AS26.1*13.10.51.941.64.145.741.891100
91P079878-38BwS27.510.80.50.939.75.845.542.78793
91P0798838-62BCS25.9*15.80.60.342.63.846.441.692100

*Extractable Ca may contain Ca from calcium carbonate or gypsum., CEC7 base saturation set to 100.


*** Primary Characterization Data ***
Pedon ID: 91VI020013( St. John, Virgin Islands )Print Date: Apr 23 2025 8:08AM
Sampled As:IsaacFine, mixed, isohyperthermic Typic Haplustoll
USDA-NRCS-NSSC-Soil Survey Laboratory;Pedon No.  91P1201
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
TotalElecElecExch
DepthCaMgNaKCO3HCO3FClPO4BrOACSO4NO2NO3H2OSaltsCondCondNaSAR
Layer(cm)HorzPrep(- - - - - mmol(+) L-1 - - - - -)(- - - - - - - - - - - - - - - - - - - - - - mmol(-) L-1 - - - - - - - - - - - - - - - - - - - -)(- - - - % - - - -)(- - dS m-1 - -)%
 
91P079860-8AS1
91P079878-38BwS1
91P0798838-62BCS1
pH  &  Carbonates-1--2--3--4--5--6--7--8--9--10--11-
 
(- - - - - - - - - - - - - - - - - - pH - - - - - - - - - - - - - - - - -)(- - Carbonate - -)(- - Gypsum - - -)
CaCl2As CaCO3As CaSO4*2H2OResist
Depth0.01MH2OSat<2mm<20mm<2mm<20mmohms
Layer(cm)HorzPrepKCl1:21:1PasteOxidNaF(- - - - - - - - - - - - % - - - - - - - - - - -)cm-1
4C1a2a34C1a2a4C1a2a
 
91P079860-8AS6.36.76.7
91P079878-38BwS5.76.47.0
91P0798838-62BCS5.36.67.2
Phosphorus-1--2--3--4--5--6--7--8--9--10--11--12-
 
(- - - - - - - - - - - - - - - - - - - - - - - Phosphorus - - - - - - - - - - - - - - - - - - - - -)KCl
MelanicNZAcidAnion Exch ResinBrayBrayOlsenH2OCitricMehlichExtr
DepthIndexOxalAvailableCapacity12AcidIIINO3
Layer(cm)HorzPrep%(- - - - - - - - - - - - - - - - - - - - - - - - - - - mg kg-1 - - - - - - - - - - - - - - - - - - - -)
6S3
 
91P079860-8AS3.0
91P079878-38BwS1.0
91P0798838-62BCS1.0


*** Primary Characterization Data ***
Pedon ID: 91VI020013( St. John, Virgin Islands )Print Date: Apr 23 2025 8:08AM
Sampled As:IsaacFine, mixed, isohyperthermic Typic Haplustoll
USDA-NRCS-NSSC-Soil Survey Laboratory;Pedon No.  91P1201
Clay Mineralogy (<.002 mm)-1--2--3--4--5--6--7--8--9--10--11--12--13--14--15--16--17--18-
X-RayThermalElementalEGMEInter
SiO2Al2O3Fe2O3MgOCaOK2ONa2ORetnpreta
DepthFract7A2i 7C3 tion
Layer(cm)Horzion( - - - - - - - - - peak size - - - - - - - - - - )(- - - - - - - - - % - - - - - - - - - -)(- - - - - - - - - - - - - - - - - - - - - % - - - - - - - - - - - - - - - - - - - - -)mg g-1
91P079878.0-38.0BwtclyMT 3VR 3KK 2MI 1VC 1 2012.2 0.7

FRACTION INTERPRETATION:
tcly - Total Clay <0.002 mm

MINERAL INTERPRETATION:
KK KaoliniteMI MicaMT MontmorilloniteVC Vermiculite-ChloriteVR Vermiculite

RELATIVE PEAK SIZE:5 Very Large4 Large3 Medium2 Small1 Very Small6 No Peaks


*** Primary Characterization Data ***
Pedon ID: 91VI020013( St. John, Virgin Islands )Print Date: Apr 23 2025 8:08AM
Sampled As:IsaacFine, mixed, isohyperthermic Typic Haplustoll
USDA-NRCS-NSSC-Soil Survey Laboratory;Pedon No.  91P1201
Sand - Silt Mineralogy (2.0-0.002 mm)-1--2--3--4--5--6--7--8--9--10--11--12--13--14--15--16--17--18-
X-RayThermalOpticalEGMEInter
Tot ReGrain CountRetnpreta
DepthFract 7B1a2 tion
Layer(cm)Horzion( - - - - - - - - peak size - - - - - - - - - )(- - - - - - - - % - - - - - - - - - -)(- - - - - - - - - - - - - - - - - - - - % - - - - - - - - - - - - - - - - - -) mg g-1
91P079878.0-38.0Bwvfs 1OW 77FP 15PR 5HN 1QZ 1BT 1
MS trAM trPO trMI tr

FRACTION INTERPRETATION:
vfs - Very Fine Sand 0.05-0.1 mm

MINERAL INTERPRETATION:
AM AmphiboleBT BiotiteFP Plagioclase FeldsparHN HornblendeMI Mica
MS MuscoviteOW Other Weatherable MineralsPO Plant OpalPR PyroxeneQZ Quartz
NSSC SSL Report Creation