*** Taxonomy Characterization Data ***

Pedon ID: S1971MT069001

( Petroleum, Montana )

Print Date: Dec 17 2024 8:09PM

Sampled as on May 30, 1971:	Gerdrum
Revised to correlated:	GERDRUM ; Fine, smectitic Borollic Natrargids

				United States Department of Agriculture
SSL	-	Project	NL40001   SSIR SAMPLES	Soil Conservation Service
	-	Site ID	S1971MT069001   Lat: 46° 53' 2.74" north  Long: 108° 23' 11.75" west  MLRA: 58A	Lincoln Soil Survey Laboratory
	-	Pedon No.	40A3715	Soil Laboratory
	-	General Methods 1B1A, 2A1, 2B		Lincoln, Nebraska

---

Taxonomy Tier 1				-1-	-2-	-3-	-4-	-5-	-6-	-7-	-8-	-9-	-10-
					Fine	CaCO3	1500		.1-75	Bulk	Cole	Vol	Resist
				Clay	Clay	Clay	kPa	Clay	mm	Den	Whole	% of	Min
	Depth			<.002	<.0002	<.002	/Clay	Est	Frac	33 kPa	Soil	Whole	%
Layer	(cm)	Horz	Prep	(---------% of <2 mm-------)				(-------- % --------)		g cm-3	cm cm-1
				3A1a1a	3A1a1a	3A1a1a				NK
40A28622	0-9	E	S	17.0	5.7		0.34		13	1.41	0.007	1
40A28623	9-17	Bt1	S	53.7	33.7	--	0.36		5			--
40A28624	17-34	Bt2	S	53.7	14.1	8.0	0.37		5	1.36	0.081	1
40A28625	34-49	Bt3	S	52.6	14.9	9.0	0.35		4	1.45	0.077	--
40A28626	49-68	Bt4	S	50.4	16.8	2.0	0.34		5	1.44	0.081	--
40A28627	68-90	Bky	S	45.5	13.7	2.0	0.34		9	1.44	0.051	--
40A28628	90-128	2By	S	37.8	10.6	2.0	0.31		16	1.61	0.026	2
40A28629	128-162	2C	S	37.6	12.1	2.0	0.31		17			4
40A28630	162-202	3C	S	12.0	4.8	--	0.37		91			59
40A28631	0-9	E	S	23.1	11.0		0.38		21			6

---

Taxonomy Tier 2				-1-	-2-	-3-	-4-	-5-	-6-	-7-	-8-	-9-	-10-	-11-	-12-	-13-	-14-	-15-	-16-
				pH	pH	Org	Tot	Al+½ Fe		CO3 as	(--- Base Sat ---)		NZ	ECEC	CEC7	ECEC	Al
	Depth			H2O	NaF	C	C	Oxal	ODOE	CaCO3	NH4	Bases	P Ret	cmol(+)	/Clay	/Clay	Sat	E C	ESP
Layer	(cm)	Horz	Prep			(------------------------------------------ % --------------------------------------------)								kg -1			%	dS m-1	%
				8C1a		NK				NK								NK	5D2
40A28622	0-9	E	S	6.4		1.57				--	82	100			0.63			0.59	2
40A28623	9-17	Bt1	S	7.9		1.27				1	100*	100			0.62			1.22	10
40A28624	17-34	Bt2	S	8.5		0.86				10	100*	100			0.56			1.81	16
40A28625	34-49	Bt3	S	8.4		0.64				10	100*	100			0.52			3.42	19
40A28626	49-68	Bt4	S	8.0		0.53				15	100*	100			0.53			7.78	19
40A28627	68-90	Bky	S	7.8		0.57				3		100			0.55			8.03	11
40A28628	90-128	2By	S	7.9		0.28				12		100			0.49			8.03	12
40A28629	128-162	2C	S	8.1		0.24				15		100			0.46			7.55	12
40A28630	162-202	3C	S	8.1						33		100			0.58			7.44	12
40A28631	0-9	E	S	7.0		1.85				--								0.92

^*Extractable Ca may contain Ca from calcium carbonate or gypsum.

---

Pedon Calculations
Calculation Name	Result	Units of Measure
CEC Activity, CEC7/Clay, Weighted Average	0.62	(NA)
Clay, carbonate free, Weighted Average	47	% wt
Weighted Particles, 0.1-75mm, 75 mm Base	5	% wt
Clay, total, Weighted Average	53	% wt
Weighted averages based on control section: 9-59 cm