*** Taxonomy Characterization Data ***

Pedon ID: S1995IA107012

( Keokuk, Iowa )

Print Date: Nov 21 2024 12:39PM

Sampled as on Aug 20, 1994:	ARMSTRONG ; Fine, montmorillonitic, mesic Aquollic Hapludalfs
Revised to :

				United States Department of Agriculture
SSL	-	Project	CP95IA237   SOUTHEAST IOWA	Natural Resources Conservation Service
	-	Site ID	S1995IA107012   Lat: 41° 18' 53.62" north  Long: 91° 56' 58.12" west  MLRA: 108C	National Soil Survey Center
	-	Pedon No.	95P0829	Soil Survey Laboratory
	-	General Methods 1B1A, 2A1, 2B		Lincoln, Nebraska 68508-3866

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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	8D1			4A1d			7B1a2
95P05268	0-15	Ap	S	12.7	7.1		0.80		42	1.48	0.020	1	95
95P05269	15-23	BE	S	11.9	5.8		0.44		46	1.73	0.013	4	94
95P05270	23-38	2Bt1	S	31.7	23.3		0.37		37	1.57	0.053	2	92
95P05271	38-56	2Bt2	S	42.9	33.4		0.38		28	1.45	0.076	1	89
95P05272	56-81	2Bt3	S	35.1	26.3		0.39		35	1.63	0.083	2	88
95P05273	81-109	2Bt4	S	28.2	19.1		0.40		39	1.74	0.043	2	90
95P05274	109-135	2Btc	S	16.4	10.5		0.45		43	1.79	0.020	1	86
95P05275	135-160	2C1	S	16.2	9.7		0.45		35	1.72	0.024	1	82
95P05276	160-198	2C2	S	15.0	7.8	1.0	0.48		32	1.95	0.013	2	71
95P05277	198-234	2C3	S	12.5	6.6	0.7	0.50		36	1.88	0.021	--	78
95P05278	234-254	2C4	S	17.5	9.9	2.3	0.46		36	2.02	0.016	4	67

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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	%
				4C1a2a		6A1c			8J	6E1g	5C1	5C3		5A3b	8D1		5G1		5D2
95P05268	0-15	Ap	S	4.9		2.53		0.17	0.05		78	56			1.12				1
95P05269	15-23	BE	S	4.7		0.72		0.14	0.03		42	25		5.0	0.61	0.42	38		3
95P05270	23-38	2Bt1	S	4.7		0.48		0.28	0.03		45	38		14.0	0.57	0.44	41		1
95P05271	38-56	2Bt2	S	4.6		0.50		0.36	0.04		50	42		19.4	0.58	0.45	37		1
95P05272	56-81	2Bt3	S	4.8		0.31		0.24	0.02		64	56		16.5	0.60	0.47	19		1
95P05273	81-109	2Bt4	S	5.5		0.14		0.10	0.02		86	80		15.6	0.63	0.55	3		2
95P05274	109-135	2Btc	S	6.6		0.05		0.05	0.02		99	95			0.55				2
95P05275	135-160	2C1	S	8.0		0.02		0.05	0.01		100*	95			0.57				4
95P05276	160-198	2C2	S	8.5		0.01		0.03	0.01	8	100*	100			0.47				8
95P05277	198-234	2C3	S	8.4		0.03		0.03	0.01	8	100*	100			0.52				5
95P05278	234-254	2C4	S	8.4		0.04		0.03	0.01	11	100*	100			0.46				5

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

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Pedon Calculations
Calculation Name	Result	Units of Measure
CEC Activity, CEC7/Clay, Weighted Average	0.58	(NA)
Clay, carbonate free, Weighted Average	37	% wt
Weighted Particles, 0.1-75mm, 75 mm Base	33	% wt
Volume, >2mm, Weighted Average	2	% vol
Clay, total, Weighted Average	37	% wt
LE, Whole Soil, Summed to 1m	6	cm/m
Weighted averages based on control section: 23-73 cm