Geology Reference
In-Depth Information
Table 4.9 Potassic Ma
c Lavas of The Bearpaw Mountains (after Macdonald et al. 1992)
SiO
2
TiO
2
Al
2
O
3
Fe
2
O
3
MnO
MgO
CaO
Na
2
O
K
2
O
P
2
O
5
LOI
Total
1
49.80
0.52
9.52
8.80
0.14
17.24
6.06
1.89
4.02
0.42
0.47
98.88
2
47.93
0.55
9.30
9.20
0.16
16.65
6.69
1.37
4.89
0.57
1.43
98.74
3
53.39
0.48
11.87
7.59
0.12
12.44
5.25
2.81
4.47
0.46
0.12
99.00
4
48.11
0.77
10.25
9.55
0.16
12.43
8.38
1.17
5.50
0.80
2.01
99.13
5
51.77
0.72
12.48
8.92
0.16
8.36
7.57
2.80
4.03
0.52
1.95
99.28
6
48.92
0.73
13.18
8.73
0.16
8.03
7.47
2.09
6.37
0.71
2.20
98.59
7
52.26
0.80
12.34
9.30
0.18
7.39
7.50
2.44
4.82
0.59
1.79
99.41
8
48.15
0.82
11.69
9.89
0.17
7.10
8.29
2.10
7.59
0.75
2.63
99.18
1
8 Analyses of minettes
-
1
4 and 7 Blocks in pyroclastic deposit
5 Flows of minette composition
6 Minette dyke
8 Minette from younger series
-
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