Table T1. Geochemistry of CaCO3 samples.
Core, section,
interval (cm)
Depth
(mbsf)
Depth within
basement (m)
CaCO3
mineral
13C
(VPDB)
18O
(VSMOW)
Mg
(ppm)
Sr
(ppm)
Fe
(ppm)
Mn
(ppm)
87Sr/86Sr
2 E
206-1256C-
5R-3, 14–18 255.4 5.4 A 0.58 27.66 429 3,520 1,130 15 0.708638
0.000011
5R-3, 27–30 255.6 5.6 A 1.37 26.45 217 3,230 528 10 0.708632
0.000013
6R-3, 109–112 260.8 10.8 A 1.58 26.89 47 3,520 140 5 0.708623
0.000011
6R-4, 107–111 262.1 12.1 AC 0.61 25.48 4,590 471 11,600 25,300 0.708572
0.000011
7R-3, 50–55 269.8 19.8 C 0.32 25.17 4,970 140 12,500 25,600 0.708566
0.000013
8R-1, 56–60 276.1 26.1 A 0.66 27.28 84 4,210 209 12 0.708658
0.000010
8R-4, 20–23 279.8 29.8 C 0.42 21.87 1,170 59 2,100 7,390 0.708216
0.000093
8R-4, 32–35 279.9 29.9 A 3.47 30.76 508 6,520 1,210 70 0.708691
0.000010
8R-4, 64–67 280.2 30.2 A 3.29 30.52 541 6,340 1,230 51 0.708701
0.000011
8R-4, 72–75 280.3 30.3 AC 2.54 30.61 1,250 6,400 2,500 124 0.708684
0.000011
8R-6, 21–23 281.7 31.7 A 3.11 31.50 366 5,760 590 79 0.708553
0.000011
13R-1, 10–12 322.1 72.1 A 3.23 28.92 110 5,140 249 36 0.708719
0.000011
206-1256D-
7R-1, 46–49 304.4 54.4 C 0.36 22.99 1,240 40 3,510 8,900
7R-6, 39–41 311.1 61.1 C –0.93 22.64 2,720 86 5,740 6,700
8R-3, 67–68 316.2 66.2 A 3.61 29.45 415 4,070 950 86 0.708614
0.000011
8R-4, 111–116 317.4 67.4 AC 1.93 26.35 1,860 1,050 4,280 20,200 0.708437
0.000011
12R-5, 76–81 347.1 97.1 C –0.35 25.92 1,970 53 2,890 44,700 0.70823
0.000013
12R-6, 93–95 348.8 98.8 C 1.07 23.59 807 29 1,910 8,310 0.708086
0.000047
12R-8, 27–33 350.8 100.8 AC 2.29 28.43 1,340 4,770 2,350 67 0.708675
0.000011
13R-1, 82–85 351.1 101.1 C 0.06 23.08 1,510 53 1,760 8,340
26R-5, 104–105 445.0 195.0 C 0.30 22.23 3,380 52 8,490 10,600 0.708341
0.000024
27R-1, 23–27 445.6 195.6 C –1.34 22.27 3,160 63 10,100 11,100 0.708296
0.000014
27R-1, 29–32 445.7 195.7 C –0.57 22.09 4,650 76 12,800 14,300 0.708446
0.000016
27R-2, 28–31 447.1 197.1 C 0.53 22.29 2,490 60 5,140 6,720 0.708308
0.000011
28R-1, 121–123 452.1 202.1 C –0.44 22.04 4,560 65 7,580 13,200 0.708408
0.000018
32R-1, 98–99 476.2 226.2 A 0.00 22.11 133 1,160 404 52 0.708365
0.000010
32R-1, 124–126 476.4 226.4 C –3.11 21.59 2,230 50 7,560 9,890 0.708286
0.000011
32R-2, 44–46 477.1 227.1 A –1.23 21.77 398 759 1,290 1,110 0.708259
0.000011
32R-4, 2–4 479.3 229.3 AC –1.49 21.60 2,220 398 6,500 6,320 0.70825
0.000011
33R-3, 15–17 484.0 234.0 C 0.07 21.45 5,270 53 18,700 5,660
34R-1, 0–3 484.4 234.4 C –0.34 21.35 2,800 62 12,200 7,480 0.708268
0.000013
36R-1, 42–45 494.4 244.4 C –0.99 22.02 7,260 102 18,300 15,200 0.70849
0.000016
38R-1, 91–93 505.2 255.2 AC –0.37 21.60 1,540 1,160 2,540 480 0.708295
0.000011
41R-2, 117–118 527.2 277.2 C –1.84 21.01 2,150 48 6,700 7,570 0.708269
0.000011
41R-3, 6–10 527.5 277.5 A –1.43 21.32 495 1,130 1,290 171
42R-1, 33–35 529.7 279.7 C –2.28 20.97 2,080 51 7,360 6,170
59R-1, 27–31 659.3 409.3 C 0.80 20.02 950 37 1,740 1,160 0.708043
0.000016

Notes: A = aragonite, C = calcite, AC = aragonite-calcite mixture. VPDB = Vienna Peedee belemnite, VSMOW = Vienna standard mean ocean water. 87Sr/86Sr for NIST-987 was 0.710248 0.000027 for the period of the analyses (N = 80). — = not determined.