*** Primary Characterization Data ***

Pedon ID: 64VI030001

( St. Thomas, Virgin Islands )

Print Date: Dec 8 2025 11:27PM

Sampled as on Aug 30, 1964:	Dorothea
Revised to correlated:	Dorothea ; Fine, vermiculitic, isohyperthermic Typic Haplustalfs

				United States Department of Agriculture
SSL	-	Project	NL40001   SSIR SAMPLES	Soil Conservation Service
	-	Site ID	S1964VI030001   Lat: 18° 21' 18.00" north  Long: 64° 57' 11.00" west  MLRA: 27	Lincoln Soil Survey Laboratory
	-	Pedon No.	40A0568	Soil Laboratory
	-	General Methods 1B1A, 2A1, 2B		Lincoln, Nebraska

---

Layer	Horizon	Orig Hzn	Depth (cm)	Field Label 1	Field Label 2	Field Label 3	Field Texture	Lab Texture
40A04158	A	A	0-15	20088				CL
40A04159	Bt1	B21t	15-28	20089				CL
40A04160	Bt2	B22t	28-48	20090				C
40A04161	B	B3	48-76
40A04162	C	C	76

---

Pedon Calculations
Calculation Name	Result	Units of Measure
CEC Activity, CEC7/Clay, Weighted Average	0.7	(NA)
Clay, carbonate free, Weighted Average	44	% wt
Weighted Particles, 0.1-75mm, 75 mm Base	20	% wt
Volume, >2mm, Weighted Average	2	% vol
Clay, total, Weighted Average	44	% wt
Weighted averages based on control section: 15-48 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
40A04158	0-15	A	S	cl	38.0	32.3	29.7			20.6	11.7	9.8	9.9	3.9	3.8	2.3	4	2	--	20	6
40A04159	15-28	Bt1	S	cl	39.3	30.9	29.8			19.9	11.0	9.1	9.6	4.2	4.5	2.4	2	2	--	21	4
40A04160	28-48	Bt2	S	c	46.9	26.1	27.0			16.3	9.8	8.3	9.3	3.8	3.6	2.0	2	1	--	19	3

*** Primary Characterization Data ***

Pedon ID: 64VI030001

( St. Thomas, Virgin Islands )

Print Date: Dec 8 2025 11:27PM

Sampled As	:	Dorothea
USDA-SCS-Soil Survey Laboratory			;	Pedon No.  40A0568

---

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
40A04158	0-15	A	S							19.0						0.77	0.50
40A04159	15-28	Bt1	S							17.9						0.77	0.46
40A04160	28-48	Bt2	S							19.6						0.66	0.42

---

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 - - - - -)
					6B1a			6A1a		6C2c
40A04158	0-15	A	S		0.312			3.68	12	4.1
40A04159	15-28	Bt1	S		0.155			1.70	11	4.1
40A04160	28-48	Bt2	S		0.077			0.77	10	5.0

---

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 - - -)			(- - - - - - - - % - - - - - - - -)
				6N2b	6O2b	6P2a	6Q2a		6H1a				5A1a
40A04158	0-15	A	S	17.4*	12.2	0.7	0.5	30.8	11.7			42.5	29.1			72	100
40A04159	15-28	Bt1	S	15.9*	13.2	0.8	0.2	30.1	10.1			40.2	30.1			75	100
40A04160	28-48	Bt2	S	17.8*	16.6	1.1	0.3		9.1				31.0			80	100

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

*** Primary Characterization Data ***

Pedon ID: 64VI030001

( St. Thomas, Virgin Islands )

Print Date: Dec 8 2025 11:27PM

Sampled As	:	Dorothea
USDA-SCS-Soil Survey Laboratory			;	Pedon No.  40A0568

---

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 - -)

%

6L1a

8D5

40A04158

0-15

A

S

0.2

tr

2

40A04159

15-28

Bt1

S

3

40A04160

28-48

Bt2

S

tr

tr

4

---

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

4C1a2a3

8C1a

6E1c

40A04158

0-15

A

S

4.9

6.1

40A04159

15-28

Bt1

S

4.5

6.1

40A04160

28-48

Bt2

S

4.4

6.1

--