Table T5.
Normalized relative mineral abundances based on X-ray diffraction analysis of
random bulk-sediment powders, Hole 1175A.
Unit
Core,
section,
interval (cm)Depth
(mbsf)Normalized
relative mineral abundance
(wt%)
Peak
area ratio:
(101)
Cristobalite/
(100) Quartz
Total
clay
minerals
Quartz
Plagioclase
Calcite
I
190-1175A-
1H-2,
139-140
2.89
42
31
14
13
0.49
1H-4,
137-138
5.87
40
29
14
17
0.29
1H-5,
69-70
6.69
40
31
11
18
0.33
2H-1,
136-137
8.56
39
32
13
16
0.32
2H-3,
137-138
11.57
37
30
11
22
0.31
2H-5,
137-138
14.57
40
31
11
18
0.29
3H-1,
136-137
18.06
36
28
11
25
0.39
3H-3,
136-137
21.06
38
29
13
21
0.33
4H-2,
138-139
29.08
41
30
11
18
0.31
4H-4,
137-138
32.07
41
30
14
15
0.35
4H-6,
139-140
35.09
43
30
12
15
0.24
5H-2,
138-139
38.58
43
31
12
15
0.27
5H-5,
138-139
43.08
43
30
11
16
0.29
6H-4,
110-111
50.80
35
23
8
34
0.27
7H-2,
128-129
57.48
43
35
12
10
0.26
7H-3,
78-79
58.48
33
43
15
9
0.93
7H-4,
30-31
59.50
20
61
19
0
0.14
8H-3,
122-123
68.42
39
29
11
21
0.29
9H-3,
132-133
78.02
36
28
11
26
0.36
9H-5,
10-11
79.80
35
24
9
31
0.39
9H-6,
146-147
82.66
32
24
11
33
0.31
10H-2,
133-134
86.03
40
27
11
22
0.34
12H-4,
105-106
106.35
42
30
11
17
0.28
13H-4,
131-132
116.11
36
25
11
28
0.33
14H-5,
135-136
127.15
29
21
10
40
0.34
15H-3,
136-137
133.66
37
28
12
23
0.36
16H-1,
78-79
139.58
30
25
10
36
0.30
16H-3,
132-133
143.12
26
18
6
51
0.33
17H-3,
142-143
152.72
36
25
9
30
0.25
18H-3,
142-143
162.22
28
22
8
43
0.26
19H-4,
133-134
173.13
31
26
11
32
0.27
20H-4,
135-136
182.65
31
25
10
34
0.29
21H-4,
135-136
192.15
36
25
11
28
0.27
22H-4,
142-143
201.72
35
25
10
30
0.26
23X-3,
67-68
208.97
35
25
10
30
0.32
23X-4,
91-92
210.71
26
23
11
40
0.40
23X-7,
52-53
214.45
25
15
14
46
0.43
Mean
Unit I:
36
28
11
25
0.33
II
25X-3,
126-127
228.86
45
28
11
16
0.33
26X-3,
127-128
238.57
33
23
9
35
0.31
26X-4,
128-129
240.08
37
28
9
26
0.33
27X-4,
120-121
249.60
27
25
10
39
0.58
28X-2,
116-117
256.26
37
28
12
23
0.35
28X-5,
119-120
260.79
38
29
10
22
0.36
28X-6,
48-49
261.58
38
28
14
19
0.26
29X-5,
119-120
270.39
35
25
10
30
0.29
30X-2,
113-114
275.43
36
22
7
34
0.36
31X-4,
119-120
288.09
39
30
11
20
0.26
Mean
Unit II:
37
27
10
26
0.34
III
33X-2,
114-115
304.24
40
28
14
18
0.32
33X-3,
117-118
305.77
47
26
11
16
0.35
33X-5,
49-50
308.09
33
28
13
26
0.26
33X-6,
57-58
309.67
27
24
24
25
0.37
37X-4,
118-119
345.68
24
59
12
5
0.13
37X-5,
140-141
347.40
34
37
17
12
0.22
38X-2,
115-116
352.25
50
32
17
1
0.29
39X-2,
102-103
361.72
42
33
14
11
0.34
40X-CC,
20-21
369.00
39
40
15
5
0.55
41X-2,
106-107
380.96
46
34
16
4
0.37
42X-2,
111-112
390.61
39
38
15
8
0.18
43X-2,
69-70
399.79
44
36
15
4
0.27
43X-CC,
23-24
402.14
42
34
14
11
0.28
III
44X-1,
46-47
406.96
39
35
19
7
0.22
46X-CC,
1-2
425.81
47
35
15
3
0.24
47X-CC,
10-11
435.50
47
37
16
0
0.28
Mean
Unit III:
40
35
16
10
0