*** Primary Characterization Data ***
Pedon ID: 91VI020012( St. John, Virgin Islands )Print Date: Apr 29 2025 7:49AM

Sampled as on Sep 1, 1991:Maho Bay ; Loamy, mixed, isohyperthermic, shallow Typic Argiustoll
Revised to correlated:Maho Bay ; Loamy, mixed, superactive, isohyperthermic, shallow Typic Haplustolls
United States Department of Agriculture
SSL-ProjectRP91VI270   ST JOHN, VIRGIN ISLANDS-REFERENCENatural Resources Conservation Service
-Site IDS1991VI020012   Lat: 18° 20' 59.00" north  Long: 64° 44' 45.00" west  MLRA: 271National Soil Survey Center
-Pedon No. 91P1200Soil Survey Laboratory
-General Methods 1B1A, 2A1, 2BLincoln, Nebraska 68508-3866
LayerHorizonOrig HznDepth (cm)Field Label 1Field Label 2Field Label 3Field TextureLab Texture
 
91P07983AA0-9CL CL
91P07984BwBw9-19CL L
91P07985CrCR19-40L
Pedon Calculations
Calculation NameResultUnits of Measure
 
CEC Activity, CEC7/Clay, Weighted Average1.08(NA)
Clay, carbonate free, Weighted Average26% wt
Weighted Particles, 0.1-75mm, 75 mm Base65% wt
Volume, >2mm, Weighted Average52% vol
Clay, total, Weighted Average26% wt
 
Weighted averages based on control section: 0-19 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
 
91P079830-9AScl27.042.330.733.78.65.94.34.97.68.081394741
91P079849-19BwSl24.841.034.234.86.25.14.95.78.410.11423378284
91P0798519-40CrSl21.045.633.439.26.45.05.46.68.87.6212616379


*** Primary Characterization Data ***
Pedon ID: 91VI020012( St. John, Virgin Islands )Print Date: Apr 29 2025 7:49AM
Sampled As:Maho BayLoamy, mixed, isohyperthermic, shallow Typic Argiustoll
USDA-NRCS-NSSC-Soil Survey Laboratory;Pedon No.  91P1200
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
 
91P079830-9AS15.31.0341.160.57
91P079849-19BwS10.61.0281.000.43
91P0798519-40CrS10.91.0281.310.52
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
 
91P079830-9AS0.4226.63
91P079849-19BwS0.2393.35
91P0798519-40CrS0.0560.72
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
 
91P079830-9AS10.910.61.10.322.912.435.331.36573
91P079849-19BwS5.29.21.00.215.610.826.424.85963
91P0798519-40CrS2.912.82.50.118.311.229.527.66266


*** Primary Characterization Data ***
Pedon ID: 91VI020012( St. John, Virgin Islands )Print Date: Apr 29 2025 7:49AM
Sampled As:Maho BayLoamy, mixed, isohyperthermic, shallow Typic Argiustoll
USDA-NRCS-NSSC-Soil Survey Laboratory;Pedon No.  91P1200
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 - -)%
 
91P079830-9AS4
91P079849-19BwS4
91P0798519-40CrS9
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
 
91P079830-9AS4.85.4
91P079849-19BwS4.45.0
91P0798519-40CrS4.34.8
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
 
91P079830-9AS3.0
91P079849-19BwS1.0
91P0798519-40CrS4.0


*** Primary Characterization Data ***
Pedon ID: 91VI020012( St. John, Virgin Islands )Print Date: Apr 29 2025 7:49AM
Sampled As:Maho BayLoamy, mixed, isohyperthermic, shallow Typic Argiustoll
USDA-NRCS-NSSC-Soil Survey Laboratory;Pedon No.  91P1200
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
91P079849.0-19.0BwtclyVC 3KK 3MI 2 1910.2 1.0

FRACTION INTERPRETATION:
tcly - Total Clay <0.002 mm

MINERAL INTERPRETATION:
KK KaoliniteMI MicaVC Vermiculite-Chlorite

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


*** Primary Characterization Data ***
Pedon ID: 91VI020012( St. John, Virgin Islands )Print Date: Apr 29 2025 7:49AM
Sampled As:Maho BayLoamy, mixed, isohyperthermic, shallow Typic Argiustoll
USDA-NRCS-NSSC-Soil Survey Laboratory;Pedon No.  91P1200
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
91P079849.0-19.0Bwvfs 3OW 69FP 25QZ 3PR 2AM 1PO tr
MI trBT trOP tr

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

MINERAL INTERPRETATION:
AM AmphiboleBT BiotiteFP Plagioclase FeldsparMI MicaOP Opaques
OW Other Weatherable MineralsPO Plant OpalPR PyroxeneQZ Quartz
NSSC SSL Report Creation