Table T8. X-ray diffraction analysis on oriented clay-sized fraction (<2 µm) DSDP Site 297.
Core, section, interval (cm)
Depth (mbsf)
Peak area (total counts)
Clay-sized fraction (wt%)*
Clay mineral (wt%)*
Clay mineral (area%)†
Bulk sample (wt%)*
Bulk sample (area%)†
Smectite
Illite
Chlorite
Quartz
Smectite
Illite
Chlorite
Quartz
Smectite
Illite
Chlorite
Smectite
Illite
Chlorite
Smectite
Illite
Chlorite
Smectite
Illite
Chlorite
31-297-                                        
15-2, 113 336.13 2,718 2,751 3,548 165 23 39 29 8 25 43 32 13 53 34 19 32 24 10 39 25
15-4, 85 338.85 3,504 5,581 6,182 199 19 45 29 7 20 48 31 9 58 32 15 35 23 7 43 24
16-2, 59 354.59 289 12,518 10,544 1,148 15 46 25 15 17 53 29 0 70 30 5 15 8 0 20 8
16-2, 130 355.30 233 2,526 899 852 23 35 14 29 32 49 19 2 83 15 14 21 8 1 36 6
16-3, 90 356.30 353 987 1,069 394 22 29 22 27 30 40 30 5 61 33 6 8 6 1 13 7
17-2, 9 392.09 3,467 8,392 8,518 654 18 43 27 12 20 49 31 6 62 32 6 14 9 2 18 9
17-2, 114 393.14 6,535 4,186 2,431 888 34 34 13 19 42 42 16 23 60 17 17 17 6 9 24 7
17-3, 10 393.60 500 3,143 3,801 881 19 32 25 23 25 42 33 2 61 37 6 11 8 1 15 9
17-3, 56 394.06 6,492 6,758 6,906 990 25 37 23 15 29 44 27 14 57 29 12 18 11 6 23 12
17-3, 118 394.68 774 4,097 4,618 1,091 19 33 25 23 25 43 32 3 62 35 4 7 6 0 11 6
18-1, 72 429.22 1,124 4,265 3,366 1,187 22 34 20 25 29 45 26 5 68 27 8 13 8 1 20 8
18-2, 88 430.88 2,288 8,158 6,464 854 19 44 22 15 22 52 26 5 68 27 14 33 16 3 43 17
18-2, 115 431.15 3,917 6,572 7,520 1,172 21 35 25 18 26 43 31 9 58 33 17 28 20 6 38 22
18-2, 133 431.33 4,293 3,685 2,193 885 30 34 14 21 38 44 18 18 63 19 12 13 5 5 19 6
19-1, 142 467.92 8,814 8,803 5,756 822 29 44 16 12 33 49 18 16 63 21 21 32 12 10 41 13
20-1, 121 505.71 25,954 4,145 3,902 761 65 22 7 5 69 23 7 52 33 16 50 17 5 37 24 11
20-2, 83 506.83 48,871 310 169 0 98 1 1 0 98 1 1 97 2 1 87 1 1 86 2 1
20-2, 90 506.90 26,460 655 406 0 98 1 1 0 98 1 1 89 9 3 91 1 1 82 8 3
20-2, 112 507.12 13,662 3,861 2,689 1,022 47 27 10 16 56 32 12 40 45 16 36 21 8 25 29 10
20-2, 119 507.19 3,124 1,755 1,397 246 35 36 16 13 40 41 18 24 54 22 21 22 10 13 28 11
20-3, 4 507.54 39,580 4,581 3,428 1,302 74 18 2 7 79 19 2 61 28 11 61 15 2 47 22 8
20-3, 14 507.64 7,108 2,064 1,799 377 47 29 12 11 53 33 14 37 44 19 40 25 10 28 33 14
20-3, 81 508.31 6,762 3,805 3,248 206 37 41 18 5 39 43 19 24 53 23 30 33 15 19 42 18
20-4, 123 510.23 1,850 1,806 1,996 352 26 34 23 18 31 41 28 14 55 31 24 31 21 11 42 23
21-3, 4 526.54 2,867 2,525 2,924 253 26 37 25 11 30 42 28 15 54 31 23 32 22 12 41 24
21-3, 36 526.86 7,193 2,829 2,714 308 42 34 17 8 45 37 18 30 47 23 33 27 14 22 35 17
21-3, 112 527.62 24,897 5,553 5,433 696 57 27 11 5 60 28 12 43 38 19 46 22 9 33 29 14
21-3, 125 527.75 7,030 2,890 2,647 200 43 37 16 5 45 39 17 29 48 22 35 30 13 23 38 18
21-3, 129 527.79 5,139 1,845 1,909 245 42 31 17 9 47 34 19 31 45 23 36 27 15 25 35 18
22-2, 67 554.17 3,034 1,640 1,451 251 35 34 17 13 41 40 20 24 52 23 21 20 10 12 27 12
22-2, 90 554.40 14,176 4,044 3,143 600 51 30 10 9 56 33 11 39 44 17





22-2, 110 554.60 6,362 886 618 568 53 18 7 21 68 23 9 57 32 11 30 10 4 25 14 5
22-3, 79 555.79 3,506 1,807 1,672 339 35 32 18 15 41 38 21 25 51 24 29 27 15 18 36 17
22-4, 49 556.99 6,263 2,589 2,954 367 38 32 20 11 42 36 22 28 46 26 21 18 11 14 23 13
23-3, 76 593.76 4,480 2,509 2,033 230 36 39 16 9 40 43 18 24 54 22 32 35 14 20 44 18
23-3, 100 594.00 3,608 377 207 574 47 15 9 30 66 21 13 65 27 7 49 16 9 48 20 6
23-4, 0 594.50 4,363 2,323 2,207 317 35 35 18 12 40 40 20 24 51 24 29 29 15 18 38 18
23-4, 43 594.93 32,485 2,266 1,639 1,916 68 12 2 17 83 15 2 72 20 7 47 8 1 41 12 4
24-2, 81 620.81 2,843 1,330 817 198 41 35 11 13 47 40 13 29 54 17 34 29 9 21 40 12
24-3, 18 621.68 11,855 3,299 1,891 373 57 33 5 6 60 35 5 41 46 13 38 22 3 26 29 8
24-3, 86 622.36 14,106 2,112 898 145 76 22 1 1 77 22 1 58 35 7 58 17 1 43 26 6
25-2, 109 649.59 4,054 558 245 295 59 19 4 19 72 23 5 60 33 7 41 13 3 34 19 4
25-3, 64 650.64 16,448 2,549 751 953 63 21 0 15 75 25 0 58 36 5 56 19 0 44 27 4
25-3, 121 651.21 6,448 1,365 567 591 51 23 6 21 64 29 8 49 42 9 50 22 6 39 33 7
25-6, 66 655.16 12,594 1,848 743 987 57 19 4 20 71 24 5 59 34 7 51 17 4 42 25 5
26-1, 27 666.27 13,665 3,354 877 118 65 33 1 1 66 33 1 47 47 6 53 27 1 38 38 5
26-1, 45 666.45 28,698 5,019 2,431 1,124 66 24 1 9 73 26 1 54 37 9 39 14 1 29 20 5
26-1, 109 667.09 6,920 422 260 0 96 3 1 0 96 3 1 76 18 6 76 2 1 60 15 5
26-2, 51 668.01 44,882 757 1,099 1,304 93 0 1 6 99 0 1 90 6 4 88 0 1 80 5 4
26-2, 61 668.11 41,131 409 492 0 98 1 1 0 98 1 1 94 4 2 84 1 1 81 3 2
26-2, 105 668.55 31,324 1,386 401 481 95 3 1 1 96 3 1 83 15 2 83 3 1 72 13 2
26-2, 130 668.80 35,873 5,221 764 962 75 21 1 3 77 22 1 62 36 3 58 16 1 46 27 2
27-1, 20 675.70 2,465 1,859 729 289 35 40 9 16 42 48 11 22 65 13 28 32 7 15 45 9
27-1, 51 676.01 13,076 3,633 723 279 63 35 1 1 64 35 1 45 50 5 55 30 1 39 43 4
27-1, 61 676.11 18,302 5,358 2,971 852 52 31 6 10 58 35 7 40 47 13 40 24 5 28 32 9

Notes: * = SVD normalization factors. † = Biscaye (1965) normalization factors.