Table
T4. X-ray fluorescence analyses of dolerites for
major elements.
180-1118A-
69R-2,
92-95
1a
49.12
1.89
16.22
14.70
0.13
7.52
1b
48.44
48.78
1.86
1.87
15.97
16.09
14.53
14.62
0.13
0.13
7.44
7.48
71R-1,
44-47.5
2a
51.07
1.83
13.52
14.85
0.23
5.89
2b
51.47
51.27
1.83
1.83
13.57
13.55
14.96
14.91
0.24
0.23
5.92
5.91
74R-1,
107-110
3a
52.16
1.74
13.12
15.23
0.24
5.94
3b
51.49
51.83
1.74
1.74
13.02
13.17
15.41
15.32
0.25
0.25
5.90
5.92
74R-2,
92-95
4a
51.87
1.76
12.80
15.37
0.25
5.48
4b
52.10
51.99
1.80
1.78
12.90
12.85
15.54
15.45
0.26
0.25
5.61
5.55
76R-1,
82-84
5a
49.87
1.78
13.33
13.23
0.44
3.48
5b
49.90
49.89
1.81
1.79
13.40
13.37
13.37
13.25
0.45
0.45
3.50
3.49
76R-1,
102-105
6a
50.33
1.59
14.30
12.53
0.29
6.28
6b
50.55
50.44
1.59
1.59
14.36
14.33
12.55
12.54
0.29
0.29
6.34
6.31
76R-2,
71-75
7a
51.38
1.47
13.81
13.14
0.22
6.80
7b
51.71
51.55
1.49
1.48
13.97
13.89
13.31
13.23
0.22
0.22
6.81
6.81
1a
9.36
1.95
0.15
0.15
101.19
3.14
Dolerite
pebble in conglomerate of Unit VII
1b
9.23
9.29
1.98
1.97
0.15
0.15
0.15
0.15
99.88
100.03
3.14
3.14
1.76
2a
9.76
3.75
0.19
0.14
101.23
3.19
Dolerite
2b
9.83
9.79
3.71
3.73
0.19
0.19
0.14
0.14
101.87
101.55
3.19
3.19
2.27
3a
9.61
3.07
0.45
0.13
101.70
2.18
Dolerite
3b
9.59
9.60
3.05
3.06
0.44
0.45
0.13
0.13
101.03
101.37
2.18
2.18
2.33
4a
8.75
3.63
0.22
0.15
100.30
2.68
Dolerite
4b
8.82
8.79
3.61
3.62
0.23
0.23
0.15
0.15
101.02
100.66
2.68
2.68
2.51
5a
13.56
3.98
0.53
0.19
100.39
9.27
Pegmatite
segregation
5b
13.54
13.55
3.99
3.99
0.53
0.53
0.19
0.19
100.68
100.53
9.27
9.27
3.42
6a
12.11
2.39
0.34
0.12
100.27
2.89
Dolerite
6b
12.14
12.13
2.45
2.32
0.34
0.34
0.12
0.12
100.73
100.50
2.89
2.89
1.79
7a
10.80
2.51
0.21
0.11
100.45
1.91
Dolerite
7b
10.89
10.85
2.65
2.58
0.21
0.21
0.11
0.11
101.35
100.87
1.91
1.91
1.75
Notes: LOI = loss on ignition. Major element values are in weight percent; a and b = duplicate analyses of the same sample. FeO* = total Fe as FeO.