Geoscience Reference
In-Depth Information
Table 22.1 Properties of soils with spodic horizons (Source: NRCS soil lab data)
Depth
(cm)
Clay
(%)
Silt
(%)
Clay/
1500 kPa
Bulk den.
(g/cm
3
)
OC
(%)
CEC7
(cmol
c
/kg)
Al sat.
(%)
Base sat.
(%)
Fe
d
(%)
Al
d
(%)
Fe
o
(%)
Al
o
(%)
Fe
p
(%)
Al
p
(%) ODOE
Horizon
pH
Gaastra: coarse-loamy, mixed, active, frigid Argic Endoaquods; Ontonagon, MI (Pedon no. 03N0265)
E
13-33
2.5
21.2
1.2
0.84 4.0
3.8
87
8
tr
0.01
0.07
0.10
Bs1
33-43
2.5
13.2
2.24
1.66 4.6 10.3
0
0.6
0.4
0.31
0.36
0.34
Bs2
43-66
3.8
0.49 5.1
2.7
1
0.7
0.3
0.32
0.35
0.08
E/B
66-109
9.3
1.74
0.11 5.5
0.8
3
0.5
0.1
0.11
0.10
0.02
C
109-203
47.2
1.68
0.53 8.2
1.3
100
0.6
tr
0.01
Kalkaska: sandy, isotic, frigid Typic Haplorthods (Pedon 40A1970)
CEC8
Sum
O/A
0-3
2.5
7.0
5.96
6
4.2 25.4
34
11
0.2
0.03
0.03
0.06
E
3-13
1.0
5.5
1.4
1.41
0.16 4.4
1.5
88
7
0.2
0.01
0.01
0.01
Bhs
13-25
2.0
4.6
1.6
1.29
0.43 5.3
6.7
91
1
0.5
0.28
0.41
0.10
Bs
25-46
1.6
1.4
1.39
0.24 5.5
3.3
75
3
0.4
0.14
0.30
0.05
B
46-79
0.5
0.9
1.44
0.04 5.6
0.8
3
0.2
0.03
0.09
0.01
C
79-183
0.4
0.6
1.47
5.5
0.4
5
0.2
tr
0.03
tr
Leon: sandy, siliceous, thermic Aeric Alaquods; Nassau, FL (Pedon
no. S45_027)
CEC8
Sum
A
0-18
0.8
4.5
4
3.5
5.7
8
Eg
18-46
0.8
2.9
0.36 3.2
0.3
47
Bh1
46-53
4.0
6.0
2.96 3.1 22.5
1
0.1
0.20
tr
tr
Bh2
53-79
3.8
4.7
0.75 3.8 10.6
1
0.1
0.20
tr
tr
Eg1
79-94
1.2
2.5
0.21 4.3
1.7
7
Bh1
0
94-112
4.4
6.9
0.3
4.5
8.7
2
tr
tr
0.40
tr
0.30
Bh2
0
112-203
2.0
3.2
0.83 4.5
9.5
1
tr
0.30
0.20
Melvina: sandy, siliceous, thermic Oxyaquic Alorthods; Taylor, FL
(Pedon no. S62_018)
CEC8
Sum
Ap
0-15
2.0
0.6
0.67 4.6
2.3
12
E/Eg
15-71
0.6
2.4
0.67 6.5
2.3
12
Bh1
71-81
2.8
3.9
0.64 5.6
9.6
2
0.1
0.1
0.10
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