Table T17. Rock-Eval pyrolysis analyses of sediment samples, Site 1258.
Hole, core, section,
interval (cm)
Depth
(mbsf)
TOC
(wt%)
Tmax
(C)
S1
S2
S3
HI
(mg S2/g TOC)
OI
(mg S3/g TOC)
207-





Unit IV (laminated black shale):




1258A-42R-1, 134–135
391.14
9.39
396
1.80 57.49 2.61
612
27
1258A-42R-3, 23–24
392.92
9.59
398
2.02 58.38 2.55
608
26
1258C-15R-3, 121–122
393.98
6.23
401
1.06 38.96 2.12
625
18
1258C-16R-1, 130–132
395.70
12.56
401
1.61 70.04 2.79
557
22
1258A-42R-5, 94–95
396.16
5.39
384
1.29 37.07 1.37
687
25
1258A-42R-6, 108–109
397.62
13.46
390
3.93 81.03 2.07
602
15
1258C-17R-1, 107–108
400.47
14.51
394
2.84 90.72 4.04
625
27
1258A-43R-2, 9–10
400.77
5.51
399
1.01 34.92 1.64
633
29
1258A-43R-2, 64–65
401.32
11.89
401
1.88 68.95 3.18
577
26
1258B-45R-4, 116–117
401.92
23.59
398
4.33 125.77 4.30
533
18
1258B-46R-2, 56–57
404.30
28.13
398
5.14 136.46 6.86
485
24
1258C-18R-1, 124–125
405.34
10.31
397
1.90 61.15 2.96
593
28
1258C-19R-1, 95–96
410.05
7.42
405
1.63 44.00 2.31
592
31
1258C-20R-1, 58–59
414.28
2.62
402
0.57 17.00 0.98
648
37
1258A-45R-1, 45–45
419.15
14.85
403
2.18 83.76 3.81
564
26
1258A-45R-3, 122–122
422.56
1.79
403
0.23 11.80 0.64
657
32
1258A-46R-1, 103–104
424.33
12.36
403
1.94 75.22 3.52
608
28
1258A-46R-4, 28–29
427.60
9.52
404
1.22 57.05 2.90
599
30
1258A-47R-1, 32–33
428.62
7.51
401
1.21 47.00 2.79
625
37
1258A-47R-2, 36–37
430.16
11.78
399
1.96 73.70 3.74
625
31
1258A-48R-1, 48–48
433.38
9.62
397
1.23 56.46 3.27
586
33
1258B-52R-3, 90–91
434.91
10.05
404
1.62 59.90 2.90
596
28
1258A-48R-3, 42–42
436.21
6.79
397
0.88 41.63 2.67
613
39
1258A-49R-1, 109–110
438.99
2.23
400
0.26 11.76 1.62
528
72
1258A-49R-2, 108–109
440.46
9.48
398
1.42 59.07 3.66
623
38
1258A-49R-3, 126–127
442.10
4.33
403
0.61 27.15 1.99
627
45
1258A-50R-1, 79–79
443.29
3.20
402
0.38 16.73 1.99
522
62
1258A-50R-2, 79–79
444.55
5.98
406
0.73 32.58 2.65
544
44
1258B-55R-1, 49–50
445.99
8.80
402
1.35 53.70 2.39
610
27
1258C-27R-1, 108–109
448.58
5.64
404
0.52 35.75 1.61
633
28
1258B-56R-1, 44–45
451.64
5.77
400
0.77 33.54 1.61
581
31
Unit V (clayey chalk with organic matter):




1258C-28R-2, 39–40
453.69
5.26
414
0.45 27.38 2.06
520
39
1258C-29R-2, 130–131
459.60
5.42
415
0.38 26.87 2.16
495
39
1258C-31R-2, 26–27
468.16
4.54
415
0.30 22.68 2.91
499
64
1258C-31R-2, 74–75
468.64
36.63
394
0.49 62.53 10.38
170
28
1258C-33R-2, 76–77
478.26
4.67
417
0.27 19.66 1.97
420
42
1258C-34R-3, 63–64
484.33
2.19
427
0.18 6.65 1.79
303
81

Note: TOC = total organic carbon. HI = hydrogen index, OI = oxygen index. See "Organic Matter Characterization and Maturity Determination" in "Organic Geochemistry" in the "Explanatory Notes" chapter for definitions of Tmax, S1, S2, and S3.