Table AT3. Trace element concentrations in sediments of Demerara Rise using pore water squeezing residues.
Hole, core, section,
interval (cm)
Unit
Depth
Trace element (ppm)
(mbsf)
(mcd)
As
Ba
Co
Cr
Cu
Mo
Ni
Pb
Rb
Sr
U
V
Y
Zn
Zr
207-
1257A-1H-1, 145–150 I 1.45 1.45 5 298 9 71 24 1 27 19 129 345 3 131 18 101 105
1257A-2H-4, 145–150 II 8.55 8.55 2 577 5 28 17 0 22 2 28 1,152 2 37 11 28 39
1257A-3H-4, 145–150 II 18.05 18.05 3 366 3 20 12 0 13 2 19 1,028 1 25 10 31 32
1257A-4H-3, 145–150 II 26.05 26.05 3 377 5 17 22 0 16 1 21 1,083 0 28 11 33 29
1257A-5H-3, 145–150 II 35.55 35.55 2 523 7 30 27 0 23 5 30 1,057 1 78 12 45 51
1257A-6X-3, 145–150 II 45.05 45.05 1 466 1 11 6 0 2 0 8 872 1 15 6 28 15
1257A-7X-3, 145–150 II 49.35 49.35 1 405 2 14 7 0 4 0 10 826 2 12 6 16 14
1257B-3R-2, 145–150 II 52.75 56.12 1 499 2 14 13 0 8 1 14 974 0 18 10 26 23
1257A-8X-3, 145–150 II 58.55 58.55 1 740 2 13 16 0 5 0 11 720 2 18 7 23 17
1257B-4R-3, 143–150 II 63.82 70.93 1 1,617 5 19 17 0 17 6 21 696 2 60 11 36 29
1257B-5R-4, 42–49 II 73.65 76.70 1 1,165 4 27 13 0 18 4 27 862 1 55 12 49 36
1257B-7R-2, 143–150 III 91.23 95.60 1 1,084 4 34 15 0 21 5 25 956 3 56 12 43 40
1257B-8R-4, 142–150 III 103.79 107.22 1 782 5 30 21 0 15 9 36 960 3 66 12 33 45
1257B-9R-3, 140–150 III 112.02 113.79 2 717 5 37 14 0 15 3 37 1,048 2 71 14 46 50
1257A-14X-4, 140–150 III 117.70 117.70 2 1,037 6 39 13 0 29 5 43 1,012 2 65 13 59 53
1257B-10R-4, 140–150 III 123.10 125.68 1 822 4 39 13 0 19 5 43 1,022 1 79 13 53 53
1257A-15X-5, 140–150 III 128.90 128.49 1 870 7 44 15 0 25 11 44 1,036 2 88 12 67 56
1257B-11R-4, 140–150 III 132.70 135.28 2 960 9 56 27 0 37 8 60 804 1 104 15 91 67
1257B-12R-3, 140–150 III 140.60 143.27 1 863 6 45 30 0 33 8 47 964 1 77 16 69 59
1257B-13R-4, 140–150 III 151.70 154.90 1 969 5 35 17 0 18 3 39 889 3 35 13 42 51
1257C-8R-6, 90–100 III 157.50 159.95 1 2,084 5 30 17 0 10 3 34 974 2 26 12 69 43
1257A-18X-4, 140–150 III 156.16 161.96 3 1,413 10 49 43 0 32 7 53 862 2 48 15 68 66
1257C-9R-6, 51–61 III 166.15 168.56 1 294 4 35 23 0 11 4 33 670 3 30 17 25 50
1257C-10R-1, 140–150 III 169.80 172.21 2 535 5 65 23 0 17 8 59 712 2 55 24 61 99
1257C-12R-2, 90–100 IV 190.10 192.65 33 223 0 318 29 52 59 2 80 741 27 1,075 45 494 32
1257C-13R-2, 140–150 IV 200.20 202.75 14 341 3 104 48 40 90 1 18 789 11 1,015 16 1,152 23
1257C-15R-3, 17–27 IV 218.98 221.53 23 169 5 134 54 48 103 5 22 855 19 1,476 16 874 26
1257B-27R-3, 0–7 V 225.30 228.94 4 128 14 141 16 0 36 7 65 392 4 105 17 59 136
1257C-16R-6, 20–30 V 233.87 235.03 3 139 16 140 14 0 38 6 56 417 2 95 15 52 133
1257A-31X-1, 71–81 V 275.81 281.61 10 156 17 195 23 0 51 6 79 540 5 131 19 73 125
1258A-1R-1, 145–150 I 1.45 1.45 12 193 8 45 27 0 28 13 46 759 2 78 19 63 69
1258A-1R-2, 145–150 I 2.95 2.95 4 181 7 47 23 0 23 9 34 952 1 60 14 59 58
1258A-3R-4, 145–150 II 20.15 20.15 1 636 3 12 11 0 12 0 5 696 1 10 7 22 16
1258A-4R-4, 145–150 II 29.75 29.75 0 803 2 2 10 0 7 1 7 757 0 17 9 25 17
1258A-5R-3, 145–150 II 37.65 42.15 3 745 5 22 38 0 22 5 26 722 2 41 12 46 41
1258A-6R-4, 145–150 II 48.75 49.27 2 1,068 11 34 29 1 38 8 42 548 3 60 14 71 65
1258A-7R-4, 145–150 II 58.15 59.14 3 1,081 9 36 54 0 34 8 37 591 2 61 14 61 56
1258A-8R-4, 140–150 II 68.07 69.92 2 1,123 4 24 21 0 17 7 28 654 2 78 15 40 46
1258A-9R-6, 140–150 II 80.80 81.05 2 1,306 4 51 19 0 34 10 33 549 0 44 18 47 57
1258A-10R-3, 140–150 II 86.00 86.63 2 1,159 7 36 28 0 28 8 35 643 1 84 17 58 58
1258A-11R-5, 135–145 II 98.65 98.35 2 1,478 8 45 35 0 31 10 45 612 3 77 16 73 68
1258A-12R-5, 140–150 II 108.30 108.69 1 1,259 5 37 21 1 23 10 40 645 3 59 17 52 63
1258A-13R-4, 140–150 II 116.40 117.01 2 1,289 6 35 25 0 23 7 32 710 3 66 15 55 51
1258B-14R-4, 140–150 II 133.80 134.22 2 950 4 31 24 0 14 6 26 658 3 46 15 41 42
1258B-18R-3, 140–150 II 170.90 171.49 2 961 5 24 49 0 16 4 21 733 0 45 11 34 35
1258A-17R-4, 140–150 II 154.95 176.79 3 1,061 3 36 21 0 18 3 26 720 1 63 12 44 40
1258A-20R-2, 140–150 II 181.00 204.43 1 1,117 5 30 10 0 16 4 27 858 0 57 11 44 43
1258A-22R-3, 140–150 II 201.50 224.93 1 768 5 30 20 0 18 4 31 934 2 65 12 47 46
1258A-24R-3, 139–150 II 220.69 244.12 1 641 6 37 18 0 19 8 33 870 1 70 14 47 49
1258A-26R-2, 140–150 II 238.50 260.95 2 866 11 53 24 0 47 10 48 777 2 123 17 87 67
1258A-28R-5, 145–150 II 262.35 284.80 1 289 7 24 20 0 16 2 26 793 1 32 9 30 32
1258A-30R-2, 140–150 II 277.10 299.47 1 410 4 32 19 0 20 5 37 866 5 35 11 41 49
1258A-32R-5, 140–150 II 300.90 324.11 1 1,580 2 27 29 0 16 3 33 613 1 32 12 34 39
1258B-33R-4, 140–150 II 307.00 329.81 1 168 6 48 25 0 33 6 59 715 3 51 15 59 67
1258B-36R-3, 90–100 III 334.00 346.81 2 148 5 42 11 0 14 3 44 653 2 37 15 31 55
1258A-35R-3, 140–150 III 326.80 349.67 1 11,018 7 323 17 38 193 5 34 855 1 32 15 33 48
1258A-37R-2, 145–150 III 344.65 367.52 1 125 4 38 17 0 15 1 34 621 2 25 16 29 47
1258A-39R-1, 63–73 III 361.53 382.27 1 215 5 53 19 0 22 5 51 689 1 45 17 49 70
1258B-39R-5, 135–150 III 366.35 384.10 1 659 7 56 26 0 22 6 55 713 4 46 18 45 67
1258B-43R-2, 110–120 III 390.40 412.51 1 165 5 43 26 1 19 4 39 424 2 33 16 52 45
1258B-45R-2, 75–85 IV 399.25 420.08 24 477 8 127 93 149 211 9 37 768 16 2,111 13 1,964 38
1258B-46R-1, 31–44 IV 403.41 425.47 31 701 15 78 84 23 108 3 29 769 7 319 14 99 36
1258B-51R-2, 20–29 IV 427.92 452.24 25 595 5 159 77 104 147 7 36 726 44 2,039 22 705 38
1258B-52R-2, 70–80 IV 433.71 458.03 20 463 4 192 65 83 144 4 27 828 17 1,778 16 532 35
1258B-54R-3, 0–10 IV 444.38 468.86 20 207 6 174 49 73 127 6 40 705 22 1,584 22 405 78
1258B-55R-3, 58–68 IV 448.27 475.13 43 270 12 184 48 117 272 7 65 392 47 973 29 715 170
1258C-30R-1, 112–122 V 462.52 495.02 23 249 13 209 53 26 116 11 90 282 7 1,101 13 608 101
1258C-34R-2, 135–150 V 483.55 516.05 7 247 16 186 37 0 60 11 88 341 2 169 17 151 130
1259A-1R-2, 105–110 I 2.55 2.55 1 211 2 14 8 0 9 4 11 1,108 0 12 9 23 23
1259A-2R-2, 145–150 I 11.75 11.75 1 218 3 15 22 0 12 1 11 890 1 19 10 26 26
1259A-3R-4, 145–150 I 24.25 24.25 1 343 2 16 12 0 8 1 13 1,110 3 17 9 22 28
1259A-5R-2, 145–150 II 39.35 39.35 0 177 3 15 20 0 12 1 10 920 1 0 9 19 18
1259A-6R-2, 145–150 II 48.45 48.45 1 183 2 17 10 0 11 0 12 1,052 3 28 9 23 22
1259A-7R-4, 145–150 II 60.55 60.55 0 256 2 14 17 0 10 4 14 1,071 2 6 9 22 23
1259A-8R-4, 145–150 II 69.75 69.75 1 251 2 19 28 0 11 4 15 1,248 2 20 8 19 26
1259A-9R-5, 145–150 II 80.35 80.35 1 369 6 21 11 0 13 3 21 1,213 3 38 9 41 30
1259A-10R-5, 140–150 II 90.00 90.00 1 228 3 22 10 0 12 3 18 1,268 3 33 9 30 30
1259A-12R-5, 140–150 II 109.40 109.40 1 216 2 13 17 0 6 1 11 1,128 2 17 8 22 19
1259A-14R-3, 140–150 II 125.70 125.70 1 315 4 18 10 0 17 4 15 1,078 0 26 14 31 37
1259A-16R-1, 140–150 II 142.00 142.00 1 245 1 17 6 0 7 1 10 846 1 15 6 16 18
1259A-18R-1, 135–145 II 161.15 161.15 1 366 3 14 6 0 7 0 10 864 1 17 7 13 18
1259A-20R-4, 130–140 II 185.00 185.00 1 459 2 8 13 0 4 1 7 818 1 14 6 58 16
1259A-22R-3, 140–150 II 202.90 202.90 1 472 2 10 12 0 10 1 9 893 0 12 8 18 18
1259A-24R-1, 132–142 II 219.12 219.12 1 361 0 8 7 0 4 0 8 634 2 5 8 14 13
1259A-26R-5, 140–150 II 244.30 244.30 1 369 1 7 5 0 2 0 4 713 2 3 7 14 11
1259A-29R-4, 140–150 II 271.70 271.70 1 715 4 11 8 0 12 2 7 708 1 13 8 19 19
1259A-32R-1, 133–143 II 296.03 296.03 0 677 3 16 12 0 17 7 19 784 2 25 15 38 38
1259A-34R-2, 140–150 II 316.92 316.77 2 1,333 5 30 13 0 26 4 32 837 2 52 16 54 54
1259A-36R-1, 140–150 II 334.70 335.30 1 911 5 26 18 0 20 3 21 772 2 40 10 48 33
1259A-38R-1, 140–150 II 354.00 354.83 2 1,115 7 29 13 0 28 3 26 839 1 47 11 52 40
1259A-40R-3, 90–100 III 375.70 374.85 9 1,036 19 28 28 0 47 2 24 942 3 51 11 50 42
1259A-43R-1, 140–150 III 402.10 403.27 1 1,018 21 40 28 0 52 4 40 1,005 1 77 13 48 54
1259A-45R-2, 140–150 III 422.90 424.38 1 857 7 39 17 0 29 4 33 964 1 49 17 58 50
1259A-48R-3, 138–150 III 453.18 453.19 1 357 4 18 14 0 13 1 21 803 2 21 9 25 29
1259A-50R-5, 137–149 III 475.06 475.59 1 5,268 6 26 16 0 20 3 38 807 1 34 13 34 50
1259A-52R-1, 103–117 III 488.33 490.08 1 168 0 34 20 0 11 2 34 676 4 34 14 45 49
1259C-16R-5, 137–150 IV 525.65 529.18 14 597 5 104 46 38 87 2 21 813 10 572 13 584 28
1259C-17R-1, 136–146 IV 529.26 532.38 19 832 3 58 34 87 155 3 21 924 11 942 6 294 23
1259C-18R-4, 140–150 IV 543.40 547.73 23 945 11 59 60 19 175 3 24 770 18 232 16 60 28
1259C-19R-2, 78–88 V 549.22 551.57 5 219 21 127 41 2 35 10 105 96 4 127 22 51 256
1259B-25R-1, 89–100 V 554.09 555.18 5 187 12 98 29 0 22 6 82 135 4 107 22 65 306
1260A-1R-1, 58–63 I 0.58 0.58 9 595 15 75 36 1 31 27 124 311 5 165 24 107 131
1260A-2R-1, 145–150 II 2.45 2.45 4 126 4 35 10 0 17 8 33 985 2 50 8 36 51
1260A-3R-1, 145–150 II 11.75 11.75 1 372 5 26 12 0 14 3 23 1,129 3 37 13 33 43
1260A-4R-3, 145–150 II 23.95 23.95 2 281 2 25 14 0 15 2 24 1,294 3 51 8 21 36
1260A-6R-5, 90–100 II 45.10 45.10 1 319 1 13 21 0 4 0 11 754 2 14 8 21 22
1260A-7R-5, 145–150 II 54.95 55.05 1 419 4 9 20 0 10 2 10 819 0 10 7 14 14
1260A-8R-5, 142–150 II 64.62 64.72 0 356 1 8 7 0 5 0 5 909 2 7 8 12 15
1260A-9R-5, 142–150 II 74.32 73.32 1 683 0 9 10 0 6 0 11 898 3 10 8 16 17
1260A-10R-5, 142–150 II 84.02 83.12 9 342 5 8 21 0 17 0 6 790 1 12 9 23 16
1260A-12R-4, 140–150 II 101.80 100.42 1 585 2 12 7 0 5 0 4 706 0 0 8 21 13
1260A-14R-6, 105–110 II 123.85 122.17 1 396 4 12 5 0 7 1 8 577 1 14 10 14 19
1260A-17R-1, 145–150 II 145.65 143.84 1 451 2 11 9 0 6 0 10 684 3 12 7 13 17
1260A-19R-5, 143–150 II 170.63 168.82 2 734 2 16 14 0 9 0 10 703 1 16 8 20 21
1260A-21R-1, 130–140 II 183.80 181.99 1 624 5 15 13 0 10 0 11 603 1 15 8 18 20
1260A-23R-2, 140–150 II 204.30 202.49 1 621 3 16 13 0 17 4 16 728 2 21 14 34 33
1260A-25R-2, 141–150 II 223.61 221.80 1 843 5 69 17 0 31 8 29 713 2 43 15 50 53
1260A-27R-4, 140–150 II 245.90 244.39 4 639 7 26 21 0 24 1 24 764 2 45 14 50 43
1260A-29R-3, 130–140 II 262.99 262.22 1 800 4 28 16 0 16 5 24 759 3 50 10 40 39
1260A-31R-4, 140–150 III 283.98 283.21 2 1,288 3 27 14 0 17 3 28 808 2 50 14 38 45
1260A-33R-3, 0–12 III 300.76 299.99 2 93 1 26 52 0 4 1 21 889 2 39 11 18 37
1260A-35R-1, 135–150 III 318.45 317.37 1 2,118 6 50 17 0 34 9 37 888 2 68 15 64 54
1260A-37R-3, 135–150 III 340.75 341.00 2 1,479 3 19 21 0 12 1 23 804 3 26 9 24 31
1260A-39R-4, 135–150 III 361.45 362.19 1 123 3 26 12 2 17 2 29 695 1 33 13 66 41
1260A-41R-1, 140–150 III 376.30 378.96 3 82 6 53 17 0 25 5 59 919 2 41 14 54 71
1260B-38R-5, 140–150 IV 451.36 455.43 19 85 2 72 27 100 195 3 12 918 36 1,081 13 743 18
1260B-40R-4, 140–150 IV 469.00 473.58 35 144 4 149 43 132 216 3 24 989 34 1,758 16 798 44
1260A-54R-2, 110–120 V 490.50 492.98 8 200 8 148 14 1 20 4 51 211 3 81 20 32 457
1260B-46R-3, 140–150 V 505.90 508.58 9 209 14 358 15 28 152 8 60 183 3 105 22 39 375
1261A-1R-2, 145–150 I 2.95 2.95 5 459 12 66 29 0 28 22 101 535 4 137 25 89 117
1261A-3R-1, 134–139 I 14.54 14.54 7 394 14 66 23 0 29 21 137 374 3 144 22 101 120
1261A-4R-1, 145–150 I 71.15 71.15 8 371 14 75 23 1 32 24 146 269 2 154 24 107 131
1261A-5R-4, 140–150 I 137.30 137.30 12 383 14 73 18 0 33 22 143 454 2 134 24 96 126
1261A-6R-5, 140–151 I 196.50 196.50 17 366 16 70 18 0 32 22 131 504 2 138 23 92 135
1261A-7R-3, 140–150 I 241.30 241.30 12 404 15 71 19 0 30 24 143 484 3 143 25 95 131
1261A-8R-3, 140–150 I 250.90 250.90 14 396 17 72 22 0 36 26 146 515 4 141 24 96 120
1261A-10R-3, 140–150 I 270.20 270.20 12 343 12 72 17 0 28 18 121 722 3 129 20 85 104
1261A-12R-5, 0–10 I 291.10 291.10 9 302 10 67 22 0 25 19 114 738 3 122 18 84 98
1261A-14R-6, 90–100 I 312.80 312.80 8 191 8 40 4 1 17 8 65 350 2 78 12 48 58
1261A-16R-3, 140–150 I 328.00 328.00 2 421 7 48 19 0 18 13 33 1,120 2 57 15 55 72
1261A-18R-5, 139–150 I 350.29 350.29 6 316 11 61 20 0 26 17 95 872 2 106 18 67 85
1261A-20R-6, 130–140 II 370.90 370.90 0 491 3 19 9 0 7 2 14 951 4 17 8 18 28
1261A-22R-3, 46–61 II 384.86 384.86 0 449 2 11 8 0 4 2 9 871 2 12 8 15 19
1261A-25R-4, 0 –7 II 414.64 414.64 0 503 2 8 8 0 9 0 7 625 0 9 7 16 17
1261A-28R-3, 138–150 II 442.98 442.98 1 962 2 11 14 0 6 2 9 793 1 11 9 20 19
1261A-32R-5, 140–150 II 484.60 484.60 1 1,118 5 29 20 0 20 3 25 860 1 41 12 51 41
1261A-35R-5, 0 –15 III 512.10 512.10 1 1,158 7 44 30 0 34 8 47 901 3 80 23 94 72
1261A-37R-1, 135–150 III 526.65 526.65 1 1,387 19 30 17 0 58 6 29 987 1 42 22 49 48
1261A-39R-1, 135–150 III 545.95 545.95 1 3,776 5 31 18 0 15 4 28 871 1 26 10 26 41
1261A-45R-3, 136–152 IV 606.34 606.31 16 896 2 137 53 136 136 5 22 1,047 15 1,655 12 1,037 28
1261B-11R-2, 147–157 IV 619.37 612.38 28 912 3 90 48 147 227 4 23 964 11 1,355 4 937 27
1261A-48R-5, 136–150 IV 638.31 635.37 28 1,178 9 51 51 55 190 4 25 897 18 559 19 165 35
1261B-14R-2, 130–140 IV 648.00 647.25 36 400 5 150 74 78 141 6 29 876 24 2,054 15 1,404 34

Note: Italics = below detection limit.