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Table T10. Igneous unit and contacts log, Hole 1256D.

Unit/Subunit
Upper contact
Minimum
thickness (m)
Rock type
Core, section
Piece
Depth
(mbsf)
Type

206-1256D-


1a
2R-1
1
276.10
NR
3.56
Massive
1b
3R-3
1
280.25
GS
10.18
Massive
1c
5R-3
1
292.73
GS
51.09
Massive
1d
12R-6
1
347.77
GS
3.57
Massive
1 (total)


68.40
Massive
2
13R-1
1
350.30
NR
6.67
Massive
3
15R-1
2
364.24
NR
8.53
Pillows
4a
20R-1
5
387.62
NR
0.30
Sheet flows with breccia
4b
20R-1
9
387.92
NR
1.25
Sheet flows
4c
20R-1
15
388.23
NR
1.04
Hyaloclastite
4d
21R-2
8
398.52
NR
7.96
Massive
4 (total)


10.55
Sheet flows
5
24R-1
7
419.74
NR
2.69
Sheet flows
6
25R-1
1
428.80
NR
2.02
Sheet flows
7
26R-2
2
439.61
NR
0.92
Sheet flows
8a
26R-3
1
440.53
NR
10.54
Massive
8b
28R-2
1
452.26
C
2.07
Sheet flows
8c
29R-2
5
458.02
NR
0.82
Sheet flows and hyaloclastite
8d
31R-1
1
466.00
NR
16.01
Massive
8 (total)


29.44

9
35R-2
10
491.06
NR
0.79
Sheet flows
10
36R-1
6
494.24
C
7.25
Massive
11
37R-4
9
505.05
NR
1.35
Sheet flows
12
38R-1
19
505.24
C
1.22
Sheet flows
13
38R-2
18
506.46
NR
3.66
Sheet flows
14
40R-1
4
517.65
NR
0.79
Sheet flows
15
40R-1
16
518.44
NR
5.38
Massive
16a
43R-1
1
533.90
C
1.35
Sheet flows
16b
43R-2
2
535.25
C
0.68
Sheet flows
16c
44R-1
4
543.18
NR
1.03
Sheet flows
16d
44R-1
11
544.21
C
0.89
Sheet flows and hyaloclastite
16 (total)


3.95

17
44R-2
6
545.10
NR
2.19
Sheet flows
18
46R-1
2
561.54
NR
2.90
Sheet flows
19
46R-3
9
564.44
NR
8.39
Sheet flows
20
50R-1
10
592.27
NR
1.33
Sheet flows
21
51R-1
13
596.81
NR
1.71
Hyaloclastite
22
51R-2
22
598.52
NR
1.24
Sheet flows
23
52R-1
6
601.88
C
15.82
Sheet flows
24a
57R-1
12
646.64
NR
3.33
Massive
24b
57R-4
2b
649.70
NR
1.41
Sheet flows
24c
57R-5
8
651.11
NR
3.71
Sheet flows
24d
59R-2
3
659.57
GS
4.31
Sheet flows
24e
60R-1
1
668.60
GS
1.94
Sheet flows
25
61R-1
1
678.50
NR
4.62
Sheet flows
26
64R-1
11
702.08
C
24.66
Sheet flows

Note: 1C = chilled margin, NR = not recovered, GS = gradational change in grain size.

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