*** Primary Characterization Data ***
Pedon ID: 91VI020010( St. John, Virgin Islands )Print Date: Apr 29 2025 7:51AM

Sampled as on Aug 30, 1991:Maho Bay ; Loamy, mixed, isohyperthermic, shallow Typic Haplustolls
Revised to correlated on Jan 1, 1995:Maho Bay ; Loamy, mixed, superactive, isohyperthermic, shallow Ustic Ustropept
United States Department of Agriculture
SSL-ProjectRP91VI270   ST JOHN, VIRGIN ISLANDS-REFERENCENatural Resources Conservation Service
-Site IDS1991VI020010   Lat: 18° 21' 1.00" north  Long: 64° 44' 43.00" west  MLRA: 271National Soil Survey Center
-Pedon No. 91P1198Soil Survey Laboratory
-General Methods 1B1A, 2A1, 2BLincoln, Nebraska 68508-3866
LayerHorizonOrig HznDepth (cm)Field Label 1Field Label 2Field Label 3Field TextureLab Texture
 
91P07977AA0-12L SIL
91P07978BwBw12-30L SIL
91P07979CrCR30-50SIL
Pedon Calculations
Calculation NameResultUnits of Measure
 
CEC Activity, CEC7/Clay, Weighted Average1.05(NA)
Clay, carbonate free, Weighted Average20% wt
Weighted Particles, 0.1-75mm, 75 mm Base34% wt
Volume, >2mm, Weighted Average22% vol
Clay, total, Weighted Average20% wt
 
Weighted averages based on control section: 0-30 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
 
91P079770-12ASsil20.364.115.651.512.63.33.23.13.72.347--2218
91P0797812-30BwSsil19.961.218.949.511.74.33.73.54.03.461794244
91P0797930-50CrSsil16.057.926.146.611.37.75.74.55.42.8639106455


*** Primary Characterization Data ***
Pedon ID: 91VI020010( St. John, Virgin Islands )Print Date: Apr 29 2025 7:51AM
Sampled As:Maho BayLoamy, mixed, isohyperthermic, shallow Typic Haplustolls
USDA-NRCS-NSSC-Soil Survey Laboratory;Pedon No.  91P1198
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
 
91P079770-12AS12.11.0291.340.60
91P0797812-30BwS8.21.0190.860.41
91P0797930-50CrS6.81.0170.850.43
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
 
91P079770-12AS0.2246.25
91P0797812-30BwS0.0723.06
91P0797930-50CrS0.0580.80
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
 
91P079770-12AS6.66.10.90.213.819.032.827.34251
91P0797812-30BwS2.13.40.4tr5.916.422.317.12635
91P0797930-50CrS0.22.90.4--3.512.315.813.62226


*** Primary Characterization Data ***
Pedon ID: 91VI020010( St. John, Virgin Islands )Print Date: Apr 29 2025 7:51AM
Sampled As:Maho BayLoamy, mixed, isohyperthermic, shallow Typic Haplustolls
USDA-NRCS-NSSC-Soil Survey Laboratory;Pedon No.  91P1198
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 - -)%
 
91P079770-12AS3
91P0797812-30BwS2
91P0797930-50CrS3
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
4C1a2a4C1a2a
 
91P079770-12AS4.24.6
91P0797812-30BwS4.04.5
91P0797930-50CrS4.14.6
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
 
91P079770-12AS2.0
91P0797812-30BwStr
91P0797930-50CrS--


*** Primary Characterization Data ***
Pedon ID: 91VI020010( St. John, Virgin Islands )Print Date: Apr 29 2025 7:51AM
Sampled As:Maho BayLoamy, mixed, isohyperthermic, shallow Typic Haplustolls
USDA-NRCS-NSSC-Soil Survey Laboratory;Pedon No.  91P1198
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
91P0797812.0-30.0BwtclyKK 3MI 2VM 2 229.4 2.9

FRACTION INTERPRETATION:
tcly - Total Clay <0.002 mm

MINERAL INTERPRETATION:
KK KaoliniteMI MicaVM Vermiculite-Mica

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


*** Primary Characterization Data ***
Pedon ID: 91VI020010( St. John, Virgin Islands )Print Date: Apr 29 2025 7:51AM
Sampled As:Maho BayLoamy, mixed, isohyperthermic, shallow Typic Haplustolls
USDA-NRCS-NSSC-Soil Survey Laboratory;Pedon No.  91P1198
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
91P0797812.0-30.0Bwvfs 0OW 89FP 9PR 1PO trBT trQZ tr
AM tr

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

MINERAL INTERPRETATION:
AM AmphiboleBT BiotiteFP Plagioclase FeldsparOW Other Weatherable MineralsPO Plant Opal
PR PyroxeneQZ Quartz
NSSC SSL Report Creation