Table T9. Paleomagnetic discrete sample data, Hole 1268A.
Core, section,
interval (cm)
Depth
(mbsf)
Piece
Lithology
Talc index
N
Decay type
MAD (°)
Remanence direction (°)
Demagnetization
J
(A/m)
PCA
(%)
Declination
Inclination
Low
High
Unit
209-1268A-













2R-2, 24 15.64 4B 2 1 2 A 1.8 330.7 57.4 20 30 mT 0.0664 0.6
2R-2, 37 15.77 4C 2 1 4 A 6.0 7.0 26.7 10 30 mT 0.4313 5.4
3R-2, 4 21.67 1 2 1 3 A 3.7 206.1 31.5 15 30 mT 0.0419 46.7
4R-1, 16 24.96 5A 2 1 12 F 3.6 300.6 23.5 15 180 mT 0.0082 61.2
5R-2, 119 32.49 26A 1 1 4 A 10.6 349.5 44.3 20 50 mT 0.0973 22.1
5R-2, 124 32.54 26A 1 1 7 F 3.7 338.1 63.9 4 20 mT 0.1918 44.1
6R-1, 49 34.89 10 2 1.5 4 F 6.1 35.5 22.3 5 20 mT 0.0486 36.3
6R-1, 55 34.95 10 1 1.5 9 A 9.5 13.5 50.4 2 30 mT 0.0963 66.0
6R-1, 106 35.46 15 2 1.5 3 A 2.1 172.1 37.9 18 30 mT 0.1259 50.4
8R-1, 123 45.23 26 2 2 9 F 3.7 282.3 45.2 30 160 mT 0.0010 47.4
10R-1, 94 54.54 16B 2 1.5 10 A 3.4 301.4 30.2 20 120 mT 0.0256 84.8
10R-2, 8 55.12 1 1 2 5 F 4.2 191.9 42.7 16 50 mT 0.0120 46.5
10R-2, 87 55.91 14 2 2 13 F 1.9 149.7 23.2 300 600 °C 0.0834 67.3
12R-1, 33 63.53 2D 2 1 6 F 2.6 180.2 38.9 8 30 mT 0.4948 26.3
12R-1, 130 64.50 14 2 1 8 F 2.0 342.9 32.1 10 60 mT 0.1375 41.0
12R-2, 40 65.10 7 2 2 6 F 2.1 233.6 14.9 10 40 mT 0.0488 58.7
13R-1, 44 68.64 6B 2 1 5 F 3.8 336.3 35.6 10 30 mT 0.0909 28.0
13R-1, 77 68.97 6B 2 1 6 F 2.9 341.2 36.1 10 40 mT 0.2078 16.0
14R-2, 112 75.41 15 2 2 6 F 8.5 330.5 13.2 5 30 mT 0.3979 68.4
15R-2, 37 79.59 2B 2 1 11 F 16.4 116.1 34.6 4 30 mT 0.1946 71.5
15R-3, 28 80.68 1 2 1 3 A 6.8 299.1 67.0 20 30 mT 0.0506 32.9
15R-4, 70 82.56 4 2 1 2 A 1.4 220.0 12.5 25 30 mT 0.0775 37.6
15R-4, 73 82.59 4 2 1 3 A 5.0 243.9 –12.4 30 50 mT 0.0736 28.0
16R-1, 62 83.02 5 2 1


†





16R-3, 120 86.31 11 2 1.5 6 A 2.0 296.2 61.3 14 30 mT 0.0048 44.4
16R-3, 133 86.44 11 2 1.5 14 F 2.7 234.1 41.0 10 180 mT 0.0023 86.5
17R-1, 18 87.58 2 10 1 7 F 2.5 0.8 13.0 80 200 mT 0.1155 42.8
17R-1, 69 88.09 8A 2 2 10 F 7.4 147.6 36.2 15 120 mT 0.0003 68.6
17R-1, 78 88.18 8B 2 2 8 A 2.0 147.4 47.2 10 30 mT 0.0006 92.0
18R-1, 120 93.20 5E 1 1 7 F 3.4 89.4 55.0 8 20 mT 0.3339 4.0
18R-1, 123 93.23 5E 1 1


†





18R-2, 57 93.85 3 1 1 4 + 9.1 281.6 37.9 20 30 mT 0.0558 0.8
18R-3, 29 94.88 1B 1 1 7 F 4.9 312.8 57.9 8 20 mT 0.3751 8.3
19R-1, 86 97.86 2D 2 1 11 F 3.7 72.5 58.9 400 600 °C 0.2269 38.7
19R-2, 112 99.50 15 2 1 6 F 4.0 81.5 51.3 8 18 mT 0.1320 8.9
19R-4, 59 101.40 1 1 1 8 F 2.9 351.5 35.2 6 20 mT 1.230 13.6
20R-2, 66 103.69 1D 2 1 11 F 3.4 10.0 31.1 10 120 mT 0.1748 19.3
20R-2, 117 104.20 5 1 2 8 F 5.6 212.5 40.7 10 30 mT 0.0400 3.6
22R-2, 81 113.51 13 10 1 13 F 0.7 108.7 8.0 10 200 mT 0.2301 94.3
23R-1, 53 116.73 4C 16 1 16 F 1.9 43.4 4.5 10 200 mT 0.0990 92.5
23R-1, 63 116.83 4C 12 1 13 F 1.1 43.6 6.0 10 200 mT 0.2485 94.5
23R-2, 45 118.09 6 2 2 8 F 11.7 138.5 20.3 500 590 °C 0.0014 16.4
24R-2, 90 122.95 7C 2 1 6 F 4.0 155.6 31.7 60 200 mT 0.0668 13.0
25R-1, 45 126.25 4B 2 2 7 F 2.2 197.1 48.3 50 200 mT 0.0003 37.3
25R-2, 25 127.48 4 12 1 16 F 2.2 215.3 27.2 10 200 mT 2.006 87.6
26R-2, 20 132.14 2 12 1 16 F 1.7 108.9 15.7 10 200 mT 0.0169 94.4
27R-1, 58 136.08 5B 12 1 16 F 3.7 235.6 7.3 100 590 °C 0.0631 95.2
28R-2, 28 141.70 1B 12 1 16 F 2.2 46.6 19.0 10 200 mT 0.5930 96.6
28R-2, 51 141.93 1D 12 1 16 F 3.3 94.0 20.6 100 590 °C 0.3684 97.2
28R-2, 51 141.93 1D* 12 1 17 A 1.0 105.2 33.1 10 80 mT 0.3640 97.8
28R-2, 87 142.29 5 12 1.5 16 F 2.3 217.8 11.9 10 200 mT 0.2669 92.0

Notes: Lithology: 1 = dunite, 2 = harzburgite, 10 = gabbro, 12 = gabbronorite, 16 = microgabbro. Talc alteration index: 1 = least talc, 2 = pervasive talc alteration. MAD = maximum angular deviation. N = number of points. Decay type: A = anchored to origin, F = free of origin, + = includes origin as point. PCA = principal component analysis; percentage of natural remanent magnetization intensity. * = small chip of thermal sample. † = no stable direction. This table is also available in ASCII.