Table T17. Rock-Eval pyrolysis analyses of sediment samples, Site 1257.
Hole, core, section,
interval (cm)
Depth
(mbsf)
TOC
(wt%)
Tmax
(°C)
S1
S2
S3
HI
OI
207-







Unit IV (laminated calcareous claystone):





1257A-20X-5, 73–74 176.13 2.73 410 0.64 13.40 2.04 490 74
1257A-20X-6, 35–36 177.25 5.93 402 1.97 36.74 2.43 620 41
1257A-21X-1, 83–84 179.83 8.55 401 1.69 46.59 2.78 544 32
1257B-19R-1, 105–106 184.75 5.66 411 0.94 33.96 1.58 600 27
1257B-19R-2, 31–32 185.51 5.30 409 1.08 30.03 1.36 566 25
1257B-20R-1, 12–13 188.82 1.58 418 0.21 3.37 0.63 213 39
1257A-22X-1, 80–83 189.40 9.51 395 3.77 58.42 3.17 614 33
1257B-20R-1, 77–78 189.47 9.65 385 3.88 66.29 3.37 686 34
1257A-22X-2, 19–20 190.29 8.62 400 2.61 53.87 3.11 624 36
1257B-21R-1, 95–96 194.25 0.68 406 0.17 3.31 0.37 486 54
1257B-21R-2, 16–17 194.96 1.57 401 0.33 8.95 0.55 570 35
1257B-21R-2, 27–28 195.07 11.07 387 3.30 79.19 1.79 715 16
1257B-21R-2, 47–48 195.27 15.76 387 5.76 115.04 2.55 729 16
1257A-23X-1, 23–24 198.43 0.94 408 0.20 5.21 0.57 554 60
1257B-22R-1, 36–37 198.66 7.79 397 2.07 54.91 1.83 704 23
1257B-22R-1, 44–45 198.74 9.72 402 1.91 60.55 1.80 622 18
1257B-22R-1, 83–84 199.13 8.40 398 2.08 59.00 2.07 702 24
1257A-23X-3, 78–79 201.98 2.32 412 0.39 12.55 0.89 540 38
1257B-23R-1, 40–41 203.40 12.28 401 2.16 78.48 2.18 639 17
1257B-23R-1, 50–51 203.50 5.62 400 1.10 35.54 1.65 632 29
1257B-23R-2, 8–9 203.99 1.52 407 0.37 8.16 0.82 536 53
1257A-23X-5, 85–86 205.05 10.65 401 3.00 62.89 3.49 590 32
1257A-24X-1, 62–63 208.22 8.63 399 2.00 58.64 2.50 679 28
1257B-24R-1, 49–50 208.49 7.58 398 1.67 50.77 3.09 669 40
1257B-24R-2, 74–75 210.24 7.12 398 2.08 46.54 2.02 653 28
1257A-24X-3, 45–46 211.05 9.13 406 1.99 54.81 3.21 600 35
1257B-24R-4, 32–33 212.28 8.62 402 1.72 58.60 2.26 679 26
1257B-25R-1, 31–31 212.91 7.56 397 2.20 50.88 3.57 673 47
1257B-25R-1, 45–46 213.05 4.27 404 0.57 28.08 2.66 657 62
1257B-25R-1, 128–129 213.88 6.35 400 1.44 41.86 2.79 659 43
1257B-25R-2, 113–114 215.23 1.65 403 0.28 7.48 1.00 453 60
1257C-15R-1, 70–71 217.30 8.21 397 1.86 56.27 3.36 685 40
1257A-25X-1, 104–105 218.24 8.41 404 1.83 53.14 2.82 631 33
1257C-15R-3, 14–15 218.95 5.64 403 1.06 38.74 2.50 686 44
Unit V (silty calcareous siltstone):





1257A-27X-5, 72–73 243.22 0.68 421 0.04 0.80 1.07 117 157
1257A-28X-4, 60–61 251.30 0.79 416 0.06 0.68 1.03 86 130
1257A-31X-1, 65–66 275.75 0.76 425 0.27 1.12 0.92 147 121

Notes: TOC = total organic carbon. HI = milligrams of hydrocarbon-like material (S2) per gram of organic carbon, OI = milligrams of CO2 (S3) per gram of organic carbon. See "Organic Geochemistry" in the "Explanatory Notes" chapter for definitions of Tmax, S1, S2, and S3.