Table T15. Rock-Eval pyrolysis analyses of sediment samples, Site 1261.
Hole, core, section,
interval (cm)
Depth
(mbsf)
TOC
(wt%)
Tmax
(°C)
S1
S2
S3
HI
OI
207-







Unit IV (laminated black shales):






1261A-41R-3, 126–127 568.06 1.04 400 0.37 5.54 0.88 532 84
1261A-41R-3, 144–145 568.24 8.33 395 5.33 49.49 5.18 594 62
1261A-41R-6, 71–72 572.01 10.07 402 3.49 60.17 5.51 597 54
1261A-42R-5, 2–3 579.29 10.51 399 3.67 63.99 6.42 608 61
1261A-42R-6, 124–125 582.01 9.27 397 5.01 61.89 5.33 667 57
1261B-7R-4, 36–37 582.84 11.36 395 7.01 70.75 6.60 622 58
1261B-8R-2, 101–102 590.11 16.09 395 10.52 104.32 8.60 648 53
1261A-44R-2, 3–4 594.13 7.04 389 4.97 45.84 4.64 651 65
1261B-9R-1, 63–64 597.83 10.79 397 5.70 67.06 6.00 621 55
1261B-9R-5, 66–67 603.81 10.61 395 6.53 60.34 6.24 568 58
1261A-45R-2, 103–104 604.53 10.68 393 6.46 68.32 5.84 639 54
1261A-45R-3, 2–3 605.00 11.39 397 3.97 71.48 3.70 627 28
1261B-10R-3, 38–39 610.18 10.98 398 3.96 74.61 3.01 679 27
1261A-46R-2, 91–92 614.12 12.04 395 7.67 67.34 4.29 559 35
1261B-11R-2, 90–91 618.80 9.45 394 3.29 46.53 1.95 452 20
1261A-47R-2, 1–2 622.80 12.37 397 2.32 51.82 2.88 418 23
1261A-47R-4, 137–138 627.09 11.82 393 4.05 71.56 3.31 605 28
1261A-48R-2, 47–48 632.97 12.89 393 5.44 78.95 3.97 612 30
1261A-48R-5, 73–74 637.68 15.76 399 4.60 88.00 4.70 558 25
1261A-49R-3, 32–33 643.90 9.19 400 2.48 45.14 3.81 491 41
1261A-49R-6, 113–114 649.21 10.67 400 5.50 67.77 3.64 635 34
1261A-50R-3, 17–19 653.37 10.73 399 2.20 58.43 3.23 544 30
Unit V (quartz sandstone):







1261B-16R-1–100 665.49 1.01 412 0.34 3.16 1.02 312 100

Note: 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.