Table
T7. Major element oxides with selected trace elements, Hole 1189A.
Core,
section: 193-1189A-:
1R-1
2R-1
3R-1
3R-1
3R-1*
3R-1*
3R-1
3R-1
4R-1*
4R-1
5R-1
7R-1
8R-1
8R-1
12R-1
13R-1
Interval
(cm):
0-4
113-115
6-10
6-10
6-10
20-22
59-63
70-73
17-20
21-24
14-16
27-31
42-44
90-92
67-69
24-33
Curated
depth (mbsf):
0.02
10.83
19.46
19.46†
19.46
19.60
19.99
20.10
29.27
29.31
38.94
58.57
68.42
68.90
107.17
116.34
Rock
type:
FD
BR
AD
AD
BR
AD
AD
AD
AD
BR
AD
AD
BR
AD
AD
Alteration
style:
F
GSC
BL
BL
GSC
GSC
Sil
GSC
GSC
GSC
GSC
Sil
Sil
Sil
GSC
Ignited
rock powder composition:
Major
element oxide (wt%):
SiO2
64.25
56.32
68.08
68.08
67.62
65.59
42.22
68.51
67.66
62.93
60.16
55.18
62.83
56.89
70.54
36.23
TiO2
0.76
0.63
0.68
0.68
0.79
0.86
0.43
0.52
0.78
0.64
0.62
0.80
0.56
0.63
0.59
1.00
Al2O3
14.67
17.80
14.22
14.56
14.71
16.01
9.53
11.00
14.45
13.31
13.25
16.59
15.81
17.85
13.82
19.10
Fe2O3
6.92
4.81
4.50
4.62
4.76
5.19
7.05
6.57
6.76
6.08
8.09
6.68
4.96
4.77
4.02
11.13
MnO
0.14
0.02
0.03
0.04
0.05
0.05
0.04
0.02
0.06
0.06
0.07
0.03
0.01
0.02
0.01
0.06
MgO
1.84
2.80
3.33
3.27
3.34
4.61
4.77
2.07
4.61
4.33
5.64
3.01
1.58
2.81
1.98
11.58
CaO
4.90
2.40
2.77
3.08
3.20
2.28
10.13
0.59
1.18
1.73
1.62
2.80
2.18
2.46
0.44
1.28
Na2O
4.68
4.77
2.93
3.11
2.97
2.20
0.32
0.59
1.31
1.42
0.64
3.80
4.43
4.90
0.45
0.75
K2O
1.26
5.37
1.90
1.98
2.00
3.65
2.91
5.71
3.58
3.49
2.95
3.89
4.22
5.34
3.85
2.88
P2O5
0.27
0.15
0.12
0.17
BD
BD
0.08
0.15
BD
0.20
0.18
0.25
0.15
0.16
0.39
0.72
Total
(wt%):
99.68
95.08
98.55
99.57
99.44
100.43
77.49
95.73
100.39
94.18
93.23
93.03
96.74
95.83
96.08
84.74
LOI
(wt%):
1.07
3.95
2.09
2.09
2.94
3.54
6.00
4.36
4.25
4.50
6.42
4.52
3.39
3.33
4.05
9.20
Trace
element (ppm):
Zr
97
196
116
115
123
128
76
97
123
120
118
150
169
192
126
128
Y
33
50
35
35
32
37
21
24
35
29
33
39
37
47
31
37
Sr
367
314
309
309
323
248
464
61
138
167
82
335
290
320
14
55
Zn
104
BD
42
44
63
51
BD
19
37
BD
BD
BD
BD
BD
BD
BD
Cu
143
BD
225
210
821
247
BD
BD
12
BD
BD
BD
BD
BD
1480
BD
Ba
307
2418
1535
1515
1478
2769
1204
3311
2374
2179
525
2073
1974
2487
669
1237
Whole
rock composition:
Major
element oxide (wt%):
SiO2
63.56
54.10
66.65
66.65
65.63
63.26
39.69
65.52
64.78
60.09
56.29
52.69
60.70
55.00
67.69
32.90
TiO2
0.76
0.60
0.67
0.67
0.77
0.83
0.40
0.50
0.75
0.61
0.58
0.77
0.54
0.61
0.56
0.91
Al2O3
14.51
17.09
13.92
14.25
14.28
15.44
8.96
10.52
13.83
12.71
12.40
15.84
15.28
17.26
13.26
17.35
Fe2O3
6.84
4.62
4.40
4.52
4.62
5.01
6.63
6.28
6.47
5.80
7.57
6.38
4.79
4.61
3.85
10.11
MnO
0.14
0.02
0.03
0.04
0.04
0.05
0.04
0.02
0.06
0.05
0.06
0.03
0.01
0.02
0.01
0.05
MgO
1.82
2.69
3.26
3.20
3.25
4.45
4.48
1.98
4.42
4.14
5.28
2.87
1.52
2.71
1.90
10.52
CaO
4.85
2.30
2.71
3.02
3.11
2.20
9.52
0.57
1.13
1.65
1.51
2.68
2.11
2.38
0.42
1.16
Na2O
4.63
4.58
2.87
3.05
2.88
2.12
0.30
0.56
1.25
1.35
0.60
3.63
4.28
4.74
0.43
0.69
K2O
1.25
5.16
1.86
1.94
1.94
3.52
2.74
5.46
3.43
3.33
2.76
3.72
4.08
5.16
3.69
2.61
P2O5
0.27
0.15
0.11
0.16
BD
BD
0.08
0.14
BD
0.19
0.17
0.24
0.14
0.15
0.37
0.65
Total
S (wt%):
0.04
2.66
0.83
0.83
1.31
1.22
9.15
4.89
2.42
2.73
4.50
4.42
2.89
3.70
2.86
6.19
Total
H2O+ (wt%):
1.35
2.69
1.71
1.71
2.23
3.27
3.00
1.67
3.13
2.74
3.92
1.68
1.59
1.17
2.65
7.00
Swater-soluble
sulfate (wt%):
0.00
2.98
0.25
ND
ND
ND
6.71
0.62
ND
0.69
1.17
0.03
1.60
0.07
0.01
0.21
Notes: Upper portion of the table gives analyses of the ignited powders, while the lower portion is the original rock compositions. Water, total sulfur, and loss on ignition (LOI) are reported in weight percent of the unignited powders for Hole 1189A. The analyses of samples containing >1 wt% total S should be used as general compositional guides and not as absolute values. Rock types: FD = fresh dacite; BR = breccia; AD = altered dacite. Alteration types: F = fresh; GSC = green silica-clay; BL = bleached; Sil = silicified. * = samples ignited for 6 hr at 600°C followed by 4 hr at 1050°C; all other samples were roasted only for 1 hr at 1050°C. BD = below detection; ND = not determined. † = duplicate.