*** Primary Characterization Data ***

Pedon ID: MLRA78-Obaro-TX263-002

( Kent, Texas )

Print Date: Dec 4 2024 2:55AM

Sampled as on Apr 29, 1980:	Obaro ; Fine-silty, mixed Typic Haplustalfs
Revised to correlated on Dec 1, 1985:	Woodward ; Coarse-loamy, mixed, active, thermic Typic Ustochrept

				United States Department of Agriculture
SSL	-	Project	CP80TX207   PERMIAN REDBED STUDY	Natural Resources Conservation Service
	-	Site ID	S80-TX263-002   Lat: 33° 10' 44.99" north  Long: 100° 42' 25.01" west  MLRA: 78B	National Soil Survey Center
	-	Pedon No.	80P0281	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
80P01517	A	A1	0-12					VFSL
80P01518	Bk11	B21ca	12-36					VFSL
80P01519	Bk12	B22ca	36-57					VFSL
80P01520	Bk21	B31ca	57-82					VFSL
80P01521	Bk22	B32ca	82-102					VFSL
80P01522	Crk1	Cr1ca	102-134					SIL
80P01523	Crk2	Cr2ca	134-154					SIL
80P01524	Crk3	Cr3ca	154-165					VFSL
80P01525	Cr	CR4	165-190					L

---

Pedon Calculations
Calculation Name	Result	Units of Measure
CEC Activity, CEC7/Clay, Weighted Average	0.58	(NA)
Clay, carbonate free, Weighted Average	12	% wt
Weighted Particles, 0.1-75mm, 75 mm Base	20	% wt
Volume, >2mm, Weighted Average	0	% vol
Clay, total, Weighted Average	13	% wt
Weighted averages based on control section: 25-100 cm

*** Primary Characterization Data ***

Pedon ID: MLRA78-Obaro-TX263-002

( Kent, Texas )

Print Date: Dec 4 2024 2:55AM

Sampled As	:	Obaro		Fine-silty, mixed Typic Haplustalfs
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  80P0281

---

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	3A1a1a	3A1a1a	3B1	3B1	3B1
80P01517	0-12	A	S	vfsl	12.3	24.8	62.9	5.7	0.3	7.8	17.0	43.1	14.3	1.7	1.5	2.3	2	4	--	25	6
80P01518	12-36	Bk11	S	vfsl	14.4	26.6	59.0	13.1	2.0	9.4	17.2	44.8	12.9	1.0	0.2	0.1	1	3	--	18	4
80P01519	36-57	Bk12	S	vfsl	16.9	30.9	52.2	9.4	2.3	13.6	17.3	39.1	11.4	0.7	0.5	0.5	2	7	--	21	9
80P01520	57-82	Bk21	S	vfsl	12.3	31.4	56.3	6.6	0.6	13.5	17.9	42.5	9.0	1.5	1.5	1.8	1	6	3	22	10
80P01521	82-102	Bk22	S	vfsl	10.6	29.3	60.1	4.5		14.7	14.6	41.8	15.1	2.0	0.9	0.3	tr	tr	--	18	tr
80P01522	102-134	Crk1	S	sil	19.8	54.1	26.1	7.0		31.7	22.4	18.3	4.2	1.3	1.3	1.0	3	3	--	13	6
80P01523	134-154	Crk2	S	sil	18.1	51.4	30.5	6.2		32.2	19.2	22.7	5.6	0.9	0.8	0.5	tr	--	--	8	tr
80P01524	154-165	Crk3	S	vfsl	8.1	33.3	58.6	3.3		14.2	19.1	45.3	11.1	0.9	0.5	0.8	1	4	3	20	8
80P01525	165-190	Cr	S	l	7.0	44.5	48.5	4.1		17.6	26.9	43.3	4.4	0.3	0.1	0.4	--	tr	--	5	tr

---

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	%
				4A1d	4A1h				4B1c	3C2a1a		3D1		4C1		8D1	8D1
80P01517	0-12	A	S							5.4		1.009				0.57	0.44
80P01518	12-36	Bk11	S	1.46	1.49	0.007			14.1	6.8		1.011		0.10		0.54	0.47
80P01519	36-57	Bk12	S	1.39	1.39	--			16.3	7.6		1.013		0.11		0.47	0.45
80P01520	57-82	Bk21	S	1.52	1.56	0.009			11.0	6.3		1.011		0.07		0.55	0.51
80P01521	82-102	Bk22	S	1.39	1.73	0.076			10.8	5.6		1.011		0.07		0.60	0.53
80P01522	102-134	Crk1	S	1.61	1.65	0.008			15.6	9.8		1.019		0.09		0.60	0.49
80P01523	134-154	Crk2	S	1.63	1.76	0.026			17.3	10.1		1.020		0.12		0.67	0.56
80P01524	154-165	Crk3	S	1.62	1.64	0.004			10.0	5.5		1.013		0.07		0.89	0.68
80P01525	165-190	Cr	S	1.68	1.74	0.012			11.3	6.6		1.012		0.08		1.19	0.94

*** Primary Characterization Data ***

Pedon ID: MLRA78-Obaro-TX263-002

( Kent, Texas )

Print Date: Dec 4 2024 2:55AM

Sampled As	:	Obaro		Fine-silty, mixed Typic Haplustalfs
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  80P0281

---

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
80P01519	36-57	Bk12	S	28	10
80P01521	82-102	Bk22	S	26	8
80P01523	134-154	Crk2	S	35	17

---

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 - - - - -)

6B1b

6A1c

6C2b

6G7a

6D2a

80P01517

0-12

A

S

0.068

0.60

9

0.5

tr

tr

80P01518

12-36

Bk11

S

0.071

0.70

10

0.5

tr

tr

80P01519

36-57

Bk12

S

0.056

0.57

10

0.6

tr

tr

80P01520

57-82

Bk21

S

0.035

0.28

8

0.6

tr

tr

80P01521

82-102

Bk22

S

0.16

0.7

tr

tr

80P01522

102-134

Crk1

S

0.12

1.0

tr

tr

80P01523

134-154

Crk2

S

0.10

1.2

tr

tr

80P01524

154-165

Crk3

S

0.06

0.6

tr

tr

80P01525

165-190

Cr

S

0.07

1.3

tr

tr

*** Primary Characterization Data ***

Pedon ID: MLRA78-Obaro-TX263-002

( Kent, Texas )

Print Date: Dec 4 2024 2:55AM

Sampled As	:	Obaro		Fine-silty, mixed Typic Haplustalfs
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  80P0281

---

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	6P2b	6Q2b						5A8a			5C3	5C1
80P01517	0-12	A	S	42.8*	1.6	--	0.3						7.0			100	100
80P01518	12-36	Bk11	S	42.7*	1.6	--	0.2						7.8			100	100
80P01519	36-57	Bk12	S	37.3*	2.5	--	0.1						8.0			100	100
80P01520	57-82	Bk21	S	42.0*	4.1	tr	0.1						6.8			100	100
80P01521	82-102	Bk22	S	37.0*	4.6	0.1	0.1						6.4			100	100
80P01522	102-134	Crk1	S	42.0*	9.3	0.9	0.2						11.9			100	100
80P01523	134-154	Crk2	S	37.0*	10.2	0.9	0.2						12.1			100	100
80P01524	154-165	Crk3	S	36.8*	6.7	0.6	0.1						7.2			100	100
80P01525	165-190	Cr	S	29.9*	7.1	0.7	0.1						8.3			100	100

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

---

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 - -)		%
				6N1b	6O1b	6P1b	6Q1b	6I1b	6J1b	6U1a	6K1c				6L1c	6W1a	6M1c	8A	8D5	8A1a	4F1a1a1		5E
80P01517	0-12	A	S	4.2	0.8	0.3	0.3	--	2.8	0.1	0.4				1.5	0.4	0.7	39.6	tr	0.53	0.31	--	tr
80P01518	12-36	Bk11	S	3.1	0.6	0.4	0.1	--	2.7	0.1	0.3				0.8	--	--	39.7	tr	0.40	0.27	--	tr
80P01519	36-57	Bk12	S																		0.24	--
80P01520	57-82	Bk21	S																		0.24	--
80P01521	82-102	Bk22	S																		0.24	2
80P01522	102-134	Crk1	S	4.2	5.8	5.5	0.1	--	1.8	0.2	3.7				8.9	0.2	0.5	48.4	tr	1.48	0.55	5	2
80P01523	134-154	Crk2	S	4.4	7.6	6.9	0.1	--	1.4	0.2	7.3				8.4	--	1.5	48.4	0.1	1.80	0.63	5	3
80P01524	154-165	Crk3	S	2.7	4.7	5.6	0.1	--	1.7	0.2	5.1				5.3	--	0.7	36.4	tr	1.34	0.43	5	3
80P01525	165-190	Cr	S	2.1	4.0	6.2	0.1	--	1.9	0.2	5.5				4.5	--	0.3	39.8	tr	1.29	0.46	5	4

*** Primary Characterization Data ***

Pedon ID: MLRA78-Obaro-TX263-002

( Kent, Texas )

Print Date: Dec 4 2024 2:55AM

Sampled As	:	Obaro		Fine-silty, mixed Typic Haplustalfs
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  80P0281

---

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	8C1b			6E1b		6F1c		8E1
80P01517	0-12	A	S		7.8	8.3	7.8			7
80P01518	12-36	Bk11	S		7.9	8.3	7.9			10
80P01519	36-57	Bk12	S		7.9	8.4				17
80P01520	57-82	Bk21	S		8.1	8.5				11
80P01521	82-102	Bk22	S		8.1	8.5				8				3300
80P01522	102-134	Crk1	S		8.1	8.4	7.9			9		--
80P01523	134-154	Crk2	S		8.1	8.3	7.9			6		--
80P01524	154-165	Crk3	S		8.1	8.4	8.0			5		--
80P01525	165-190	Cr	S		8.1	8.5	8.0			4		--

*** Primary Characterization Data ***

Pedon ID: MLRA78-Obaro-TX263-002

( Kent, Texas )

Print Date: Dec 4 2024 2:55AM

Sampled As	:	Obaro		Fine-silty, mixed Typic Haplustalfs
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  80P0281

---

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

7A3b

7C3

tion

Layer

(cm)

Horz

ion

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

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

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

mg g-1

80P01518

12.0-36.0

Bk11

tcly

MC 3

MI 2

KK 1

CA 1

KK tr

4.1

1.2

80P01520

57.0-82.0

Bk21

tcly

MC 4

MI 2

CA 2

KK 1

FD 1

5.0

1.2

80P01525

165.0-190.0

Cr

tcly

MC 5

MI 1

KK 1

5.9

0.8

FRACTION INTERPRETATION:
tcly - Total Clay <0.002 mm

MINERAL INTERPRETATION:
CA Calcite	FD Feldspar	KK Kaolinite	MC Montmorillonite-Chlorite	MI Mica

RELATIVE PEAK SIZE:

5 Very Large

4 Large

3 Medium

2 Small

1 Very Small

6 No Peaks

*** Primary Characterization Data ***

Pedon ID: MLRA78-Obaro-TX263-002

( Kent, Texas )

Print Date: Dec 4 2024 2:55AM

Sampled As	:	Obaro		Fine-silty, mixed Typic Haplustalfs
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  80P0281

---

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-Ray

Thermal

Optical

EGME

Inter

Tot Re

Grain Count

Retn

preta

Depth

Fract

7B1a2

tion

Layer

(cm)

Horz

ion

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

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

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

mg g-1

80P01518

12.0-36.0

Bk11

vfs

75

QZ 74

FK 20

CA 2

MS 2

OP 1

BT 1

HN tr

ZR tr

GN tr

80P01520

57.0-82.0

Bk21

vfs

66

QZ 65

FK 19

MI 6

CA 5

MS 3

BT 2

OP 1

80P01525

165.0-190.0

Cr

vfs

75

QZ 72

FK 11

MS 6

BT 5

CA 3

OP 3

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

MINERAL INTERPRETATION:
BT Biotite	CA Calcite	FK Potassium Feldspar	GN Garnet	HN Hornblende
MI Mica	MS Muscovite	OP Opaques	QZ Quartz	ZR Zircon