Table T9. Discrete sample remanence data, Hole U1415P.
| Core, section, interval (cm) | Depth (mbsf) | Lithology | NRM | Principal component analysis | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Declination (°) |
Inclination (°) |
Intensity (A/m) |
Treatment | Low | High |
n points |
Origin model |
MAD (°) |
Declination (°) |
Inclination (°) |
Intensity (A/m) |
|||
| 345-U1415P- | ||||||||||||||
| 3R-1, 68 | 13.18 | Olivine gabbro | 154.5 | 35.7 | 8.28E–01 | LTD/Th | 77.1 | 560 | 15 | F | 6.6 | 119.3 | –35.4 | 4.13E–01 |
| 560 | 590 | 4 | F | 4.4 | 113.8 | –58.3 | 5.13E–01 | |||||||
| 3R-1, 71 | 13.21 | Olivine gabbro | 183.2 | 34.8 | 7.75E–01 | AF | 15 | 50 | 8 | F | 3.8 | 134.7 | –46.6 | 2.14E–01 |
| 4G-1, 14 | 12.64 | Orthopyroxene-bearing olivine gabbro | 190.1 | 61.4 | 3.33E+00 | LTD/Th | 550 | 590 | 5 | F | 6.6 | 239.4 | –44.7 | 8.69E–01 |
| 4G-1, 96 | 13.46 | Olivine gabbro | 301.3 | –7.7 | 4.90E–01 | LTD/Th | 150 | 590 | 16 | F | 2.5 | 314.1 | –32.1 | 1.70E+00 |
| 4G-1, 99 | 13.49 | Olivine gabbro | 183.3 | 10.6 | 3.16E+00 | AF | 2 | 10 | 3 | F | 0.3 | 166.7 | 17.8 | 7.53E–01 |
| 25 | 40 | 4 | A | 2.6 | 324.9 | –74.5 | 7.58E–02 | |||||||
| 4G-2, 6 | 13.97 | Olivine gabbro | 124.1 | 35.7 | 1.71E+00 | LTD/Th | 560 | 590 | 4 | F | 6.4 | 113.9 | –0.9 | 2.09E–01 |
| 5R-1, 39 | 18.49 | Orthopyroxene-bearing olivine gabbro | 170.3 | 63.3 | 2.91E–01 | LTD/Th | 425 | 510 | 5 | F | 5.4 | 171.3 | –13.5 | 5.22E–02 |
| 500 | 580 | 9 | A | 3 | 105.3 | –44.6 | 1.07E–01 | |||||||
| 5R-2, 51 | 20.03 | Orthopyroxene-bearing olivine gabbro | 249.7 | –6.1 | 7.43E–01 | LTD/Th | 77.1 | 590 | 18 | F | 4.3 | 1.6 | –58.9 | 2.01E+00 |
| 6R-1, 72 | 23.32 | Olivine gabbro | 150.1 | 51.4 | 4.21E–01 | LTD/Th | 77.2 | 590 | 17 | F | 4.1 | 154.4 | –45.9 | 1.15E+00 |
| 6R-2, 92 | 24.93 | Troctolitic olivine gabbro | 96.4 | 12.1 | 9.06E–01 | LTD/Th | 425 | 590 | 12 | F | 1.7 | 80.6 | –61.7 | 2.57E+00 |
| 7R-1, 113 | 28.23 | Orthopyroxene-bearing olivine gabbro | 178.4 | –22.8 | 8.74E–02 | LTD/Th | 425 | 500 | 4 | F | 3.7 | 142.7 | –63.5 | 1.08E–01 |
| 500 | 580 | 9 | F | 1.8 | 359.9 | –26.8 | 6.63E–02 | |||||||
| 7R-2, 3 | 28.52 | Orthopyroxene-bearing olivine gabbro | 232.3 | 53.0 | 4.52E–01 | LTD/Th | 77.2 | 580 | 16 | F | 2.2 | 69.9 | –20.2 | 1.39E+00 |
| 8R-1, 5 | 31.45 | Olivine gabbro | 228.0 | 41.5 | 2.85E–01 | LTD/Th | 150 | 590 | 16 | F | 6.5 | 234.3 | 18.6 | 5.29E–01 |
| 9R-1, 6 | 36.46 | Olivine gabbro | 247.0 | 40.9 | 7.81E–01 | LTD/Th | 350 | 520 | 7 | F | 4.6 | 298.2 | –41.1 | 2.98E–01 |
| 550 | 590 | 5 | F | 3.7 | 337.9 | –62.7 | 4.76E–01 | |||||||
| 9R-2, 22 | 38.04 | Orthopyroxene-bearing olivine gabbro | 275.3 | 9.8 | 4.64E–01 | LTD/Th | 250 | 520 | 8 | F | 10.9 | 216.5 | 60.8 | 5.50E–02 |
| 510 | 580 | 8 | F | 10.5 | 249.9 | –48.2 | 9.97E–02 | |||||||
| 10R-1, 139 | 42.39 | Orthopyroxene-bearing olivine gabbro | 175.0 | 58.5 | 4.84E–01 | LTD/Th | 250 | 500 | 6 | F | 8.1 | 184.9 | –36.2 | 1.34E–01 |
| 540 | 590 | 6 | A | 4.1 | 128.9 | –70.4 | 2.03E–01 | |||||||
| 10R-2, 2 | 42.45 | Orthopyroxene-bearing olivine gabbro | 282.4 | 39.1 | 1.66E+00 | LTD/Th | 560 | 590 | 4 | F | 1.9 | 279.5 | 3.9 | 3.78E–01 |
| 11R-1, 45 | 46.05 | Orthopyroxene-bearing olivine gabbro | 318.2 | 64.2 | 1.75E+00 | LTD/Th | 560 | 590 | 4 | F | 5.7 | 229.2 | –36.8 | 3.86E–01 |
| 12R-1, 7 | 49.77 | Orthopyroxene-bearing olivine gabbro | 204.0 | 72.0 | 1.30E+00 | LTD/Th | 550 | 590 | 5 | F | 4.2 | 312.6 | –53.7 | 1.10E+00 |
| 13R-1, 17 | 54.87 | Olivine gabbro | 301.2 | 65.5 | 8.71E–01 | LTD/Th | 77.1 | 540 | 13 | F | 5.5 | 149.5 | –40.2 | 4.09E–01 |
| 540 | 590 | 6 | F | 2.1 | 170.4 | –48.0 | 7.26E–01 | |||||||
| 13R-1, 117 | 55.87 | Olivine gabbro | 166.8 | 63.8 | 2.37E+00 | LTD/Th | 550 | 590 | 5 | F | 3.1 | 13.7 | –59.3 | 6.68E–01 |
| 14R-1, 37 | 59.17 | Olivine gabbro | 273.3 | 36.5 | 5.78E–01 | LTD/Th | 350 | 475 | 4 | F | 4 | 315.2 | –41.7 | 4.06E–01 |
| 475 | 590 | 11 | F | 2.1 | 68.4 | –84.5 | 1.15E+00 | |||||||
| 14R-2, 12 | 60.21 | Olivine gabbro | 314.3 | –51.6 | 4.68E–01 | LTD/Th | 350 | 530 | 8 | F | 2.7 | 330.2 | –51.8 | 4.29E–01 |
| 14R-2, 21 | 60.30 | Olivine gabbro | 218.1 | –49.2 | 6.52E–01 | LTD/Th | 425 | 530 | 7 | F | 1.3 | 212.0 | –49.5 | 5.55E–01 |
| 15R-1, 3 | 63.83 | Olivine gabbro | 215.1 | 74.0 | 3.59E+00 | LTD/Th | 540 | 590 | 6 | A | 4.1 | 136.0 | 47.4 | 2.95E–01 |
| 16R-1, 46 | 68.46 | Troctolite | 351.7 | 52.2 | 4.27E+00 | LTD/Th | 540 | 590 | 6 | A | 1.2 | 358.3 | –8.2 | 2.75E+00 |
| 18R-1, 41 | 77.71 | Troctolite | 253.0 | 28.0 | 1.06E+00 | LTD/Th | 530 | 590 | 7 | F | 2.9 | 265.9 | –51.6 | 6.54E–01 |
| 20R-1, 68 | 82.98 | Troctolite | 279.4 | 62.6 | 8.39E+00 | LTD/Th | 425 | 580 | 12 | F | 5.6 | 193.0 | –43.6 | 2.57E+00 |
| 20R-2, 58 | 84.26 | Troctolite | 217.3 | 53.6 | 2.47E+00 | LTD/Th | 520 | 580 | 7 | F | 2.5 | 205.5 | –39.6 | 9.63E–01 |
| 22R-1, 117 | 90.57 | Troctolite | 184.2 | 61.3 | 6.47E+00 | LTD/Th | 540 | 570 | 4 | A | 5.4 | 172.5 | 11.7 | 6.26E–01 |
| 22R-2, 32 | 91.12 | Troctolite | 72.0 | 42.2 | 2.51E+00 | LTD/Th | 475 | 570 | 9 | F | 2 | 52.1 | –28.7 | 6.90E–01 |
| 22R-3, 17 | 92.30 | Troctolite | 257.7 | 60.4 | 4.95E+00 | LTD/Th | 540 | 570 | 4 | F | 2.1 | 274.7 | –17.0 | 9.37E–01 |
| 23R-1, 68 | 99.48 | Troctolite | 257.8 | 53.3 | 3.167665 | LTD/Th | 520 | 570 | 6 | F | 1.8 | 276.8 | –25.4 | 9.99E–01 |
| 23R-2, 56 | 100.77 | Troctolite | 108.1 | 54.4 | 4.24475 | LTD/Th | 520 | 570 | 5 | F | 2.3 | 95.9 | –24.0 | 9.00E–01 |
NRM = natural remanent magnetization, LTD = low–temperature demagnetization, Th = thermal demagnetization, AF = alternating field demagnetization. F = free, A = anchored. MAD = maximum angular deviation.
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