Partitioning of Iron and Scandium in Soils Having Water Drainage Limitations

Table 1

Soil profile characterization.

Horizon	Depth	pH	Texture	Total acidity	CEC
	cm			cmol/kg
Aqualf#1
A	13	4.1	sandy loam	2.0	5.8
E	33	6.5	loam	1.7	9.5
Btg1	53	8.3	loam	0.1	18.1
Btg2	81	7.9	loam	0.0	22.9
Btg3	107	7.8	loam	0.0	21.8
Btg4	137	7.3	sandy loam	0.1	18
BCg	193	7.0	loam	0.2	20.3
Aqualf#2
Oi	13	4.7	—	13.0	48.2
A	26	5.2	silt loam	1.4	20.5
E	51	5.2	silt loam	1.6	21.4
Btg1	82	5.8	silty clay loam	0.6	37.0
Btg2	110	7.0	silty clay loam	0.5	31.7
Btg3	127	7.1	silt loam	0.4	33.7
Cg	165	7.6	silt loam	0.4	27.1
Scholten (Fragiudults)#1
A	13	4.6	silt loam	18.8	19.8
E	28	5.0	silt loam	5.8	7.3
Bt1	41	5.0	silt loam	4.7	6.4
Bt2	79	4.9	silt loam	9.5	11.6
2Btx	107	4.6	loam	6.7	8.8
3Bt1	132	4.6	sandy clay loam	8.2	8.9
3Bt2	173	4.7	sandy clay	9.9	10.4
Scholten (Fragiudults)#2
A	13	4.8	silt loam	12.5	13.5
E	41	5.0	silt loam	5.3	8.3
Bt1	71	4.9	silt loam	4.6	5.6
2Btx1	99	4.9	loam	7.4	9.7
2Btx2	124	4.9	loam	7.6	9.7
3Bt1	145	4.8	clay loam	9.9	11.3
3Bt2	163	4.6	clay	12.3	13.9

All of the horizons of the Scholten (Fragiudults) pedons are gravelly to extremely gravelly.