Table T1. Natural remanent magnetization (NRM) data from DSDP and ODP sites at the Pacific plate.
Sample
|
Age
(Ma) |
NRM
(A/m) |
N
|
|---|---|---|---|
| DSDP Leg 17, Site 169 (10°40.2’N, 173°33.0’E) | |||
| Hole 169 | 148 | 4.13 ± 1.85 | 10 |
| DSDP Leg 32, Site 303 (40°48.5’N, 154°27.1’E) | |||
| Hole 303A | 129 | 3.95 | 5 |
| DSDP Leg 32, Site 304 (39°20.3’N, 155°04.2’E) | |||
| Hole 304 | 133 | 7.96 | 11 |
| DSDP Leg 32, Site 307 (28°35.3’N, 161°00.3’E) | |||
| Hole 307 | 148 | 1.01 | 8 |
| DSDP Leg 54, Site 420 (9°00.1’N, 106°06.8’W) | |||
| Hole 420 | 3.4 | 5.23 ± 4.41 | 4 |
| DSDP Leg 54, Site 421 (9°01.4’N, 106°03.7’W) | |||
| Hole 421 | 3.4 | 1.21 ± 0.29 | 5 |
| DSDP Leg 54, Site 422 (9°10.6’N, 105°16.3’W) | |||
| Hole 422 | 1.7 | 3.78 ± 1.18 | 18 |
| DSDP Leg 54, Site 423 (9°08.8’N, 105°06.6’W) | |||
| Hole 423 | 1.5 | 0.643 | 2 |
| DSDP Leg 54, Site 427 (8°06.8’N, 104°36.4’W) | |||
| Hole 427 | 2 | 6.07 ± 2.49 | 26 |
| DSDP Leg 54, Site 428 (9°02.8’N, 105°26.1’W) | |||
| Hole 428 | 2.4 | 6.60 ± 1.99 | 9 |
| Hole 428A | 2.4 | 5.39 ± 1.90 | 42 |
| DSDP Leg 54, Site 429 (9°02.0 N, 106°46.4’W) | |||
| Hole 429A | 4.6 | 1.83 ± 1.51 | 11 |
| DSDP Leg 63, Site 469 (32°37.0’N, 120°32.9’W) | |||
| Hole 469 | 17 | 1.84 ± 0.92 | 4 |
| DSDP Leg 63, Site 470 (28°54.5’N, 117°31.1’W) | |||
| Hole 470 | 15.5 | 15.03 | 2 |
| Hole 470A | 15.5 | 7.94 ± 4.16 | 6 |
| DSDP Leg 63, Site 472 (23°00.4’N, 113°59.7’W) | |||
| Hole 472 | 16 | 2.70 ± 0.85 | 4 |
| DSDP Legs 86 and 88, Site 581 (43°55.6’N, 159°47.8’E) | |||
| Hole 581 | 125.5 | 2.59 ± 1.19 | 8 |
| Hole 581A | 125.5 | 5.73 ± 3.42 | 10 |
| Hole 581B | 125.5 | 3.04 ± 1.87 | 28 |
| Hole 581C | 125.5 | 4.25 ± 1.69 | 38 |
| DSDP Leg 91, Site 595 (23°49.3’S, 165°31.6’W) | |||
| Unit 595A-1 | 157 | 0.543 ± 0.326 | 3 |
| Unit 595A-2 | 157 | 2.00 ± 0.35 | 5 |
| Unit 595B-2 | 157 | 1.82 ± 0.60 | 11 |
| Unit 595B-3 | 157 | 2.63 ± 0.30 | 4 |
| DSDP Leg 92, Site 597 (18°48.4’S, 129°46.2’W) | |||
| Unit 1-1 | 27.5 | 2.05 ± 1.07 | 45 |
| Unit 1-2 | 27.5 | 2.54 ± 0.89 | 7 |
| Unit 1-3 | 27.5 | 2.62 ± 1.50 | 19 |
| Unit 1-4 | 27.5 | 2.25 ± 1.15 | 11 |
| Unit 1-5 | 27.5 | 2.11 ± 0.89 | 7 |
| Unit 1-6 | 27.5 | 3.88 ± 1.53 | 16 |
| Unit 2-1 | 27.5 | 2.46 ± 0.97 | 40 |
| Unit 2-2 | 27.5 | 3.10 ± 1.73 | 6 |
| Unit 3 | 27.5 | 1.35 ± 0.49 | 30 |
| ODP Leg 129, Site 801 (18°38.5’N, 156°21.6’E) | |||
| Unit 13 | 166.8 | 0.45 | 2 |
| Unit 15 | 166.8 | 0.19 | 2 |
| Unit 16 | 166.8 | 1.05 | 1 |
| Unit 20 | 166.8 | 0.63 | 2 |
| Unit 21 | 166.8 | 5.99 | 2 |
| Unit 22 | 166.8 | 7.11 | 2 |
| Unit 23 | 166.8 | 5.93 | 2 |
| Unit 24 | 166.8 | 1.95 ± 1.28 | 4 |
| Unit 25 | 166.8 | 4.44 ± 2.96 | 15 |
| Unit 26 | 166.8 | 2.66 | 2 |
| Unit 27 | 166.8 | 3.09 ± 2.42 | 4 |
| Unit 28 | 166.8 | 7.51 | 2 |
| Unit 29 | 166.8 | 0.39 | 1 |
| Unit 30 | 166.8 | 0.62 | 1 |
| Unit 31 | 166.8 | 0.61 | 2 |
| Unit 32 | 166.8 | 2.06 | 2 |
| ODP Leg 136, Site 843 (19°20.5’N, 159°05.7’W) | |||
| Hole 843B | 110 | 4.39 ± 1.43 | 10 |
| ODP Leg 142, Site 864 (9°30.9’N, 104°14.7’W) | |||
| Unit 1 | 0 | 15.65 ± 14.98 | 9 |
| Unit 2 | 0 | 39.4 | 1 |
| ODP Leg 185, Site 1149 (31°20.5’N, 143°21.1’E) | |||
| Unit 1-2 | 132 | 3.19 | Half core |
| Unit 1-3 | 132 | 4.39 | Half core |
| Unit 1-5 | 132 | 3.51 | Half core |
| Unit 1-6 | 132 | 4.53 | Half core |
| Unit 1-9 | 132 | 3.19 | Half core |
| Unit 1-14 | 132 | 2.49 | Half core |
| Unit 2-7 | 132 | 3.65 | Half core |
| Unit 2-10 | 132 | 6.01 | Half core |
| Unit 2-10 | 132 | 4.15 | Half core |
| Unit 3-9 | 132 | 3.79 | Half core |
| Unit 3-13 | 132 | 4.04 | Half core |
| Unit 4-1 | 132 | 4.05 | Half core |
| ODP Leg 191, Site 1179 (41°04.8’N, 159°57.8’E) | |||
| Unit 3 | 129 | 2.95 ± 1.39 | 6 |
| Unit 5 | 129 | 6.59 ± 4.36 | 3 |
| Unit 6 | 129 | 8.06 | 1 |
| Unit 7 | 129 | 4.24 | 2 |
| Unit 8 | 129 | 1.54 ± 1.68 | 3 |
| Unit 9 | 129 | 1.80 ± 0.761 | 5 |
| Unit 11 | 129 | 3.37 ± 1.96 | 4 |
| Unit 12 | 129 | 1.41 | 1 |
| Unit 13 | 129 | 1.57 | 1 |
| Unit 15 | 129 | 16.9 | 1 |
| Unit 20 | 129 | 2.21 | 1 |
| Unit 21 | 129 | 1.24 ± 0.32 | 3 |
| Unit 24 | 129 | 1.20 | 2 |
| Unit 25 | 129 | 3.37 | 1 |
| Unit 29 | 129 | 4.03 | 2 |
| Unit 37 | 129 | 1.93 | 1 |
| Unit 41 | 129 | 4.64 | 2 |
| Unit 44 | 129 | 1.56 | 2 |
| Unit 45 | 129 | 3.75 ± 2.14 | 4 |
| ODP Leg 200, Site 1224 (27°53.4’N, 141°58.8’W) | |||
| 1224A, Unit 1 | 46.3 | 26.4 | 2 |
| 1224D, Unit 1 | 46.3 | 19.64 ± 18.64 | 12 |
| 1224D, Unit 2 | 46.3 | 28.63 ± 1.03 | 3 |
| 1224E, Unit 1 | 46.3 | 18.60 ± 2.88 | 6 |
| 1224F, Unit 1 | 46.3 | 10.87 ± 7.03 | 21 |
| 1224F, Unit 2 | 46.3 | 2.60 | 1 |
| 1224F, Unit 3 | 46.3 | 0.292 | 1 |
| 1224F, Unit 4 | 46.3 | 0.515 | 1 |
| 1224F, Unit 5 | 46.3 | 0.267 | 1 |
| 1224F, Unit 6 | 46.3 | 0.0961 | 2 |
| 1224F, Unit 8 | 46.3 | 0.222 | 2 |
| 1224F, Unit 10 | 46.3 | 0.667 | 1 |
| 1224F, Unit 13 | 46.3 | 3.40 ± 2.32 | 4 |
| 1224F, Unit 14 | 46.3 | 25.6 | 1 |
| ODP Leg 203, Site 1243 (5°18.1’N, 110°04.3’W) | |||
| Unit 1 | 11 | 1.57 ± 0.27 | 4 |
| Unit 3 | 11 | 3.20 ± 1.23 | 29 |
| Unit 4 | 11 | 3.87 ± 1.57 | 56 |
| Unit 5 | 11 | 2.81 ± 1.15 | 13 |
| Unit 6 | 11 | 6.39 ± 1.67 | 6 |
| Unit 7 | 11 | 0.807 ± 0.220 | 3 |
Age = approximate basement age; NRM = mean and standard deviation of NRM (standard deviation is indicated when N ≥ 3); N = number of specimens.
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