*** Primary Characterization Data ***

Pedon ID: S1971MT069002

( Petroleum, Montana )

Print Date: Apr 28 2024 8:23AM

Sampled as on May 30, 1971:	Woodhawk
Revised to correlated:	unnamed ; Fine, montmorillonitic Abruptic Aridic Argiborolls

				United States Department of Agriculture
SSL	-	Project	NL40001   SSIR SAMPLES	Soil Conservation Service
	-	Site ID	S1971MT069002   Lat: 47° 2' 38.74" north  Long: 108° 24' 47.74" west  MLRA: 58A	Lincoln Soil Survey Laboratory
	-	Pedon No.	40A3726	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
40A28710	A	A1	0-5	71L1081				L
40A28711	B1	B1	5-15	71L1082				C
40A28712	B2	B21	15-26	71L1083				C
40A28713	Bt	B22t	26-51	71L1084				C
40A28714	Bk1	B31ca	51-92	71L1085				C
40A28715	Bk2	B32ca	92-130	71L1086				CL
40A28716	Bk3	C1ca	130-167	71L1087				L
40A28717	2C	2C 2	167-197	71L1088				L
40A28718			51-92	71L1089				CL
40A28719			0-15	71L1090				C

---

Pedon Calculations
Calculation Name	Result	Units of Measure
CEC Activity, CEC7/Clay, Weighted Average	0.6	(NA)
Clay, carbonate free, Weighted Average	43	% wt
Weighted Particles, 0.1-75mm, 75 mm Base	13	% wt
Volume, >2mm, Weighted Average	1	% vol
Clay, total, Weighted Average	47	% wt
LE, Whole Soil, Summed to 1m	0	cm/m
Weighted averages based on control section: 26-51 cm

*** Primary Characterization Data ***

Pedon ID: S1971MT069002

( Petroleum, Montana )

Print Date: Apr 28 2024 8:23AM

Sampled As	:	Woodhawk
USDA-SCS-Soil Survey Laboratory			;	Pedon No.  40A3726

---

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
40A28710	0-5	A	S	l	25.7	44.8	29.5	10.5		23.1	21.7	16.7	6.5	2.8	2.1	1.4	2	6	--	20	8
40A28711	5-15	B1	S	c	47.5	30.5	22.0	27.8		17.1	13.4	11.7	5.1	2.6	1.6	1.0	1	1	--	12	2
40A28712	15-26	B2	S	c	50.5	31.0	18.5	26.6	--	19.8	11.2	8.9	4.4	2.2	1.9	1.1	1	1	--	11	2
40A28713	26-51	Bt	S	c	46.6	35.0	18.4	14.7	4.0	25.1	9.9	6.4	4.7	2.6	2.8	1.9	--	1	--	13	1
40A28714	51-92	Bk1	S	c	45.7	35.3	19.0	15.1	3.0	26.3	9.0	6.8	4.6	2.5	2.9	2.2	1	--	--	13	1
40A28715	92-130	Bk2	S	cl	29.5	37.9	32.6	9.6	2.0	17.1	20.8	23.9	4.1	2.2	1.6	0.8	1	2	--	11	3
40A28716	130-167	Bk3	S	l	22.6	33.9	43.5	7.9	tr	14.0	19.9	28.9	6.6	3.6	3.0	1.4	2	3	--	19	5
40A28717	167-197	2C	S	l	25.7	34.0	40.3	10.8	tr	15.0	19.0	30.5	5.9	1.7	1.5	0.7	2	4	--	15	6
40A28718	51-92		S	cl	32.0	34.2	33.8	9.4	5.0	16.1	18.1	25.6	4.3	1.7	1.6	0.6	--	1	--	9	1
40A28719	0-15		S	c	40.3	35.9	23.8	22.1		19.1	16.8	12.7	5.4	2.5	1.8	1.4	2	3	--	16	5

---

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	%
				NK	4A1h			4B1c	NK	NK
40A28710	0-5	A	S	1.24	1.31	0.018		21.9	18.4	10.2				0.10		0.71	0.40
40A28711	5-15	B1	S	1.30	1.56	0.062		25.2	23.7	15.9				0.10		0.58	0.33
40A28712	15-26	B2	S	1.33	1.60	0.063		28.9	27.0	17.2				0.13		0.59	0.34
40A28713	26-51	Bt	S	1.40	1.64	0.054		27.1	23.9	15.2				0.12		0.55	0.33
40A28714	51-92	Bk1	S	1.51	1.74	0.048		26.1	23.5	14.7				0.13		0.52	0.32
40A28715	92-130	Bk2	S							9.5						0.45	0.32
40A28716	130-167	Bk3	S	1.65	1.72	0.013		20.4	15.4	8.4				0.11		0.49	0.37
40A28717	167-197	2C	S							8.9						0.46	0.35
40A28718	51-92		S							10.3						0.47	0.32
40A28719	0-15		S							14.3							0.35

*** Primary Characterization Data ***

Pedon ID: S1971MT069002

( Petroleum, Montana )

Print Date: Apr 28 2024 8:23AM

Sampled As	:	Woodhawk
USDA-SCS-Soil Survey Laboratory			;	Pedon No.  40A3726

---

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 - - - - -)

NK

40A28710

0-5

A

S

2.27

40A28711

5-15

B1

S

1.51

40A28712

15-26

B2

S

1.31

40A28713

26-51

Bt

S

1.14

40A28714

51-92

Bk1

S

0.73

40A28715

92-130

Bk2

S

0.24

40A28716

130-167

Bk3

S

0.15

40A28717

167-197

2C

S

0.15

40A28718

51-92

S

0.36

40A28719

0-15

S

2.03

---

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 - - -)			(- - - - - - - - % - - - - - - - -)
				NK	NK	NK	NK						NK
40A28710	0-5	A	S	12.0	2.0	0.1	1.3	15.4				15.4	18.2			100	85
40A28711	5-15	B1	S	19.0	3.8	0.1	1.6	24.5				24.5	27.5			100	89
40A28712	15-26	B2	S	23.2	5.0	0.1	1.2						30.0			100	98
40A28713	26-51	Bt	S	19.3*	8.0	0.5	0.6						25.6			100	100
40A28714	51-92	Bk1	S	9.7*	14.1	3.3	0.5						23.7			100	100
40A28715	92-130	Bk2	S		9.2	3.1	0.4						13.3			100
40A28716	130-167	Bk3	S		7.6	3.3	0.3						11.0			100
40A28717	167-197	2C	S		8.4	3.5	0.3						11.8			100
40A28718	51-92		S	9.2*	8.4	1.1	0.4						14.9			100	100

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

*** Primary Characterization Data ***

Pedon ID: S1971MT069002

( Petroleum, Montana )

Print Date: Apr 28 2024 8:23AM

Sampled As	:	Woodhawk
USDA-SCS-Soil Survey Laboratory			;	Pedon No.  40A3726

---

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 - -)		%
				NK	NK	NK	NK	NK	NK		NK				NK			NK	8D5	NK
40A28710	0-5	A	S																			1
40A28711	5-15	B1	S	3.6	1.1	0.2	0.4	--	4.8		--				--			50.8	tr	0.45		tr	tr
40A28712	15-26	B2	S																			tr
40A28713	26-51	Bt	S	2.2	1.3	1.6	0.1	--	5.4		--				--			49.6	tr	0.46		2	1
40A28714	51-92	Bk1	S	1.0	2.0	9.8	0.1	--	8.5		0.9				5.1			53.2	tr	1.21		12	8
40A28715	92-130	Bk2	S																			23
40A28716	130-167	Bk3	S	28.0	46.4	56.0	0.5	--	6.9		6.1							35.1	0.2	7.97		12	9
40A28717	167-197	2C	S	26.0	65.0	73.5	0.5	--	3.3		7.0				152.0			38.4	0.3	9.05		6	11
40A28718	51-92		S	0.8	1.1	4.6	0.1	--	5.6		--				0.5			40.1	tr	0.58		6	5

---

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	NK			NK		NK
40A28710	0-5	A	S		6.5	6.8
40A28711	5-15	B1	S		6.5	6.9	6.6
40A28712	15-26	B2	S		7.0	7.3				1
40A28713	26-51	Bt	S		7.6	8.0	7.5			11
40A28714	51-92	Bk1	S		8.1	7.9	8.0			8		--
40A28715	92-130	Bk2	S		8.1	8.1				6		2
40A28716	130-167	Bk3	S		8.0	8.1	7.9			3		3
40A28717	167-197	2C	S		8.1	8.2	7.9			4		4
40A28718	51-92		S		7.9	8.3	8.0			9
40A28719	0-15		S		6.3	6.5

*** Primary Characterization Data ***

Pedon ID: S1971MT069002

( Petroleum, Montana )

Print Date: Apr 28 2024 8:23AM

Sampled As	:	Woodhawk
USDA-SCS-Soil Survey Laboratory			;	Pedon No.  40A3726

---

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

&nbsp;

&nbsp;

&nbsp;

&nbsp;

tion

Layer

(cm)

Horz

ion

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

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

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

mg g-1

40A28712

15.0-26.0

B2

tcly

MT 3

MI 3

KK 3

CL 1

QZ 1

&nbsp;

&nbsp;

&nbsp;

&nbsp;

&nbsp;

&nbsp;

&nbsp;

&nbsp;

&nbsp;

&nbsp;

&nbsp;

&nbsp;

&nbsp;

40A28717

167.0-197.0

2C

tcly

MT 3

MI 3

KK 3

CL 1

QZ 1

&nbsp;

&nbsp;

&nbsp;

&nbsp;

&nbsp;

&nbsp;

&nbsp;

&nbsp;

&nbsp;

&nbsp;

&nbsp;

&nbsp;

&nbsp;

FRACTION INTERPRETATION:
tcly - Total Clay <0.002 mm	&nbsp;	&nbsp;	&nbsp;	&nbsp;

MINERAL INTERPRETATION:
CL Chlorite	KK Kaolinite	MI Mica	MT Montmorillonite	QZ Quartz

RELATIVE PEAK SIZE:

5 Very Large

4 Large

3 Medium

2 Small

1 Very Small

6 No Peaks