*** Primary Characterization Data ***

Pedon ID: S1968AZ003002

( Cochise, Arizona )

Print Date: Dec 8 2025 4:34AM

Sampled as on Oct 13, 1968:	Martinez
Revised to correlated:	Martinez ; Very-fine, mixed, semiactive, thermic Vertic Paleustalfs

				United States Department of Agriculture
SSL	-	Project	NL68AZ023   E.PIMA-SANTA CRU	Natural Resources Conservation Service
	-	Site ID	S1968AZ003002   Lat: 31° 21' 54.00" north  Long: 110° 24' 49.00" west	National Soil Survey Center
	-	Pedon No.	68C0146	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
68C01052	A1	A11	0-3	681052			L	COSL
68C01053	A2	A12	3-15	681053			CL	CL
68C01054	Bt1	B1 t	15-25	681054			C	C
68C01055	Bt21	B21t	25-46	681055			C	C
68C01056	Bt22	B22t	46-66	681056			C	C
68C01057	Bt23	B23t	66-89	681057			C	C
68C01058	Bt3	B3 t	89-117	681058			C	SC
68C01059	A	A	0-38	681059

---

Pedon Calculations
Calculation Name	Result	Units of Measure
CEC Activity, CEC7/Clay, Weighted Average	0.36	(NA)
Clay, carbonate free, Weighted Average	74	% wt
Weighted Particles, 0.1-75mm, 75 mm Base	13	% wt
Volume, >2mm, Weighted Average	0	% vol
Clay, total, Weighted Average	74	% wt
Weighted averages based on control section: 15-66 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
68C01052	0-3	A1	S	cosl	13.9	28.6	57.5			10.2	18.4	8.6	13.7	6.1	10.7	18.4	6	3	--	49	9
68C01053	3-15	A2	S	cl	29.2	31.5	39.3			13.7	17.8	9.6	14.1	5.2	5.5	4.9	1	1	10	37	12
68C01054	15-25	Bt1	S	c	53.8	19.7	26.5			9.4	10.3	5.8	8.8	3.7	4.4	3.8	1	1	--	21	2
68C01055	25-46	Bt21	S	c	82.0	7.7	10.3			4.1	3.6	2.5	3.5	1.4	1.5	1.4	--	--	--	8	--
68C01056	46-66	Bt22	S	c	75.0	8.7	16.3			3.2	5.5	3.1	5.4	2.7	2.9	2.2	1	tr	--	13	1
68C01057	66-89	Bt23	S	c	66.0	9.1	24.9			5.5	3.6	3.8	8.5	5.2	5.6	1.8	4	2	--	21	6
68C01058	89-117	Bt3	S	sc	38.8	11.6	49.6			6.8	4.8	3.4	9.5	7.8	16.1	12.8	2	2	14	54	18
68C01059	0-38	A	S														5	2	--

*** Primary Characterization Data ***

Pedon ID: S1968AZ003002

( Cochise, Arizona )

Print Date: Dec 8 2025 4:34AM

Sampled As	:	Martinez
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  68C0146

---

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	%
				4A1f	4A1h				4B1c	3C2a1a		3D1		4C1		8D1	8D1
68C01052	0-3	A1	S							6.5		1.050				0.71	0.47
68C01053	3-15	A2	S	1.41	1.49	0.017			19.7	9.0		1.050		0.14		0.44	0.31
68C01054	15-25	Bt1	S							16.6		1.050				0.37	0.31
68C01055	25-46	Bt21	S	1.28	1.55	0.066			35.4	25.3		1.050		0.13		0.35	0.31
68C01056	46-66	Bt22	S	1.33	1.61	0.065			33.4	24.9		1.050		0.11		0.37	0.33
68C01057	66-89	Bt23	S							23.3		1.050				0.40	0.35
68C01058	89-117	Bt3	S	1.40	1.55	0.031			30.0	14.5		1.050		0.19		0.55	0.37
68C01059	0-38	A	S							8.3		1.050

---

Water Content				-1-	-2-	-3-	-4-	-5-	-6-	-7-	-8-	-9-	-10-	-11-	-12-	-13-
				(- - Atterberg - -)		(- - - - - Bulk Density - - - - -)			(- - - - - - - - - - - - - - - - - - - - - - - Water Content - - - - - - - - - - - - - - - - - - - - -)
				(- - - Limits - - -)		Field	Recon	Recon	Field	Recon	(- - - - - - - - - - - - - - Sieved Samples - - - - - - - - - - - - -)
				LL	PI		33	Oven		33	6	10	33	100	200	500
	Depth						kPa	Dry		kPa	kPa	kPa	kPa	kPa	kPa	kPa
Layer	(cm)	Horz	Prep	pct <0.4mm		(- - - - - - - - g cm-3 - - - - - - -)			(- - - - - - - - - - - - - - - - - - - - - - - % of < 2mm - - - - - - - - - - - - - - - - - - - - - -)
				4F1	4F
68C01052	0-3	A1	S	15.598	3
68C01053	3-15	A2	S	24.19199	11
68C01055	25-46	Bt21	S	56.31799	26
68C01058	89-117	Bt3	S	28.44	13

*** Primary Characterization Data ***

Pedon ID: S1968AZ003002

( Cochise, Arizona )

Print Date: Dec 8 2025 4:34AM

Sampled As	:	Martinez
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  68C0146

---

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		6C1a	6G7a
68C01052	0-3	A1	S		0.096			1.18	12	2.3	0.2
68C01053	3-15	A2	S		0.097			1.05	11	2.3	0.2
68C01054	15-25	Bt1	S		0.098			1.05	11	2.1	0.3
68C01055	25-46	Bt21	S		0.081			0.79	10	2.8	0.4
68C01056	46-66	Bt22	S					0.39		2.6	0.3
68C01057	66-89	Bt23	S					0.21		2.3	0.3
68C01058	89-117	Bt3	S							1.5	0.2
68C01059	0-38	A	S		0.090			1.00

---

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	6P2a	6Q2a		6H2a	6G1e		5A3a	5A6a	5A3b	5G1	5C3	5C1
68C01052	0-3	A1	S	2.6	1.2	tr	0.6	4.4	7.5	0.5		11.9	9.8	4.9	10	37	45
68C01053	3-15	A2	S	4.9	2.7	0.1	0.7	8.4	5.5	0.2		13.9	12.8	8.6	2	60	66
68C01054	15-25	Bt1	S	10.6	5.4	0.4	0.7	17.1	5.5			22.6	19.9			76	86
68C01055	25-46	Bt21	S	15.4*	15.0	1.2	1.1	32.7				32.7	28.7			100	100
68C01056	46-66	Bt22	S	17.8*	14.4	1.8	0.9	34.9				34.9	27.5			100	100
68C01057	66-89	Bt23	S	18.6*	11.1	1.9	0.9	32.5				32.5	26.7			100	100
68C01058	89-117	Bt3	S	15.2*	8.8	1.7	0.5	26.2				26.2	21.3			100	100

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

*** Primary Characterization Data ***

Pedon ID: S1968AZ003002

( Cochise, Arizona )

Print Date: Dec 8 2025 4:34AM

Sampled As	:	Martinez
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  68C0146

---

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 - -)

%

8D5

8A1a

68C01052

0-3

A1

S

--

68C01053

3-15

A2

S

1

68C01054

15-25

Bt1

S

2

68C01055

25-46

Bt21

S

tr

0.41

4

68C01056

46-66

Bt22

S

tr

0.54

7

68C01057

66-89

Bt23

S

tr

0.64

7

68C01058

89-117

Bt3

S

tr

0.37

8

---

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

8C1e

8C1a

68C01052

0-3

A1

S

4.2

5.0

68C01053

3-15

A2

S

4.7

5.5

68C01054

15-25

Bt1

S

5.5

6.1

68C01055

25-46

Bt21

S

6.8

7.1

68C01056

46-66

Bt22

S

7.5

7.8

68C01057

66-89

Bt23

S

7.5

8.0

68C01058

89-117

Bt3

S

7.2

8.1

*** Primary Characterization Data ***

Pedon ID: S1968AZ003002

( Cochise, Arizona )

Print Date: Dec 8 2025 4:34AM

Sampled As	:	Martinez
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  68C0146

---

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

tion

Layer

(cm)

Horz

ion

( - - - - - - - - - peak size - - - - - - - - - - )

(- - - - - - - - - % - - - - - - - - - -)

(- - - - - - - - - - - - - - - - - - - - - % - - - - - - - - - - - - - - - - - - - - -)

mg g-1

68C01052

0.0-3.0

A1

tcly

MI 3

KK 3

MT 1

68C01053

3.0-15.0

A2

tcly

MI 3

KK 3

MT 1

68C01055

25.0-46.0

Bt21

tcly

KK 4

MI 3

MT 1

68C01058

89.0-117.0

Bt3

tcly

KK 4

MI 3

MT 1

FRACTION INTERPRETATION:
tcly - Total Clay <0.002 mm

MINERAL INTERPRETATION:
KK Kaolinite	MI Mica	MT Montmorillonite

RELATIVE PEAK SIZE:

5 Very Large

4 Large

3 Medium

2 Small

1 Very Small

6 No Peaks