Table T10. Piece orientations from archive-half data, Holes 1270A, 1270B, 1270C, and 1270D.
Core, section, interval (cm)
Depth (mbsf)
Piece
Lithology
PCA
polarity
N
Decay type
MAD (°)
Remanence direction (°) Demagnetization (mT)
J
(A/m)
PCA
(%)
Declination
Inclination
Low
High
209-1270A-












1R-1, 108 1.08 19 2 I 5 + 6.5 276.8 45.6 40 80 0.1386 3.1
209-1270B-












1R-1, 20 0.20 4 10 R 3 F 8.5 200.6 12.2 60 80 0.0368 0.2
1R-1, 38 0.38 6 10 R 4 + 2.2 182.1 3.6 60 80 0.0200 1.1
1R-1, 86 0.86 15 10 R 4 + 2.2 213.7 –5.9 60 80 0.0909 4.2
1R-1, 96 0.96 16 10 R 4 + 2.2 169.2 –10.4 60 80 0.1389 4.5
1R-1, 98 0.98 16 10 R 9 + 2.3 174.9 –1.2 25 80 0.3955 6.0
1R-1, 114 1.14 17 10 R 4 + 1.6 209.2 –4.4 60 80 0.1539 2.3
1R-1, 115 1.15 17 10 R 7 + 1.7 201.4 –6.7 35 100 0.4809 2.9
1R-1, 126 1.26 17 10 R 4 + 3.9 167.3 –7 60 80 0.1766 1.2
1R-1, 144 1.44 21 10 R 4 + 1.2 242.0 –4.2 60 80 0.1470 1.3
1R-2, 4 1.54 1 10 R 3 + 2.8 233.9 –9.5 60 80 0.0628 1.0
2R-1, 38 12.78 8 10 R 5 + 1.9 286.8 8.9 15 40 0.4580 15.5
2R-1, 60 13.00 12 10 R 3 + 4.1 205.5 10.1 60 80 0.0731 0.6
2R-1, 84 13.24 14 10 R 3 + 5.8 228.4 8.2 60 80 0.1017 0.9
2R-1, 100 13.40 16 10 R 6 + 4.6 357.9 22.1 20 80 0.9136 7.9
2R-1, 118 13.58 18 10 R 3 + 6.0 256.5 0.2 60 80 0.1186 1.1
2R-1, 130 13.70 19 10 R 4 + 6.0 175.3 5.6 40 80 0.1225 3.3
3M-1, 46 17.86 9 10 R 3 + 6.7 180.8 –1.8 60 80 0.0825 0.9
3M-1, 62 18.02 11 10 R 3 + 3.8 232.9 7.4 60 80 0.0689 0.8
3M-1, 72 18.12 12 10 R 3 + 4.6 210.7 9.1 60 80 0.0703 0.6
3M-1, 114 18.54 16 10 R 3 + 3.0 197.0 0.4 60 80 0.0729 1.3
3M-1, 118 18.58 18 10 R 3 + 1.3 198.3 –2.9 60 80 0.0940 1.7
3M-1, 134 18.74 20 10 R 3 + 3.5 245.4 –13.6 60 80 0.0744 0.9
4M-1, 52 18.02 9 10 R 3 + 1.6 269.3 –7.5 60 80 0.1530 2.0
4M-1, 66 18.16 10 10 R 3 + 4.9 165.6 –1.9 60 80 0.0943 0.6
4M-1, 80 18.30 11 10 R 3 + 2.2 235.8 –9 60 80 0.1189 1.5
4M-1, 96 18.46 13 10 R 3 + 3.8 177.5 –0.6 60 80 0.0439 1.2
4M-1, 104 18.54 14 10 R 8 + 2.8 155.3 –8.4 20 60 0.4628 4.8
4M-1, 108 18.58 15 10 R 5 + 25.2 145.1 37.6 30 80 0.2434 1.7
4M-2, 14 19.14 3 10 R 3 + 2.3 128.7 0.0 60 80 0.0701 2.8
4M-2, 22 19.22 4 10 R 3 + 3.9 127.4 –30.9 60 80 0.0291 0.9
4M-2, 48 19.48 8 10 R 3 + 2.7 221.4 –7 60 80 0.1049 1.3
4M-2, 57 19.57 9 10 R 8 + 4.7 163.8 –23.4 20 60 0.7258 4.8
4M-2, 60 19.60 9 10 R 4 + 11.5 204.4 –9.6 40 80 0.1108 2.3
4M-2, 100 20.00 15 16 R 4 + 9.1 188.4 –5.5 40 80 0.0181 5.1
4M-2, 120 20.20 18 16 R 3 + 4.4 206.4 –7.4 60 80 0.0231 1.8
4M-2, 125 20.25 19 16 R 10 + 7.8 51.7 2.9 10 60 0.3968 13.7
4M-2, 138 20.38 20 16 R 3 + 1.7 115.3 0.6 60 80 0.0348 1.8
4M-3, 6 20.49 1 16 R 8 + 4.1 170.9 –17.8 25 80 0.2650 4.0
4M-3, 8 20.51 1 16 R 3 + 1.4 190.6 –5.5 60 80 0.0488 1.8
7R-1, 86 32.36 15 16 R 4 + 6.9 153.1 8.3 40 80 0.0396 6.8
7R-1, 94 32.44 16 16 R 4 F 8.5 228.7 –30.8 30 80 0.0075 17.7
7R-1, 105 32.55 17 16 R 7 F 3.7 328.4 –27.9 20 60 0.1250 16.7
7R-1, 106 32.56 17 16 R 4 F 1.2 333.9 –17.3 30 80 0.0520 28.1
7R-2, 50 33.40 8 16 R 3 + 3.7 166.9 –11 60 80 0.1318 1.9
7R-2, 66 33.56 9 16 R 3 + 1.0 167.3 –15.4 60 80 0.1980 2.3
7R-2, 98 33.88 11 10 R 3 + 1.6 293.0 –21.5 60 80 0.2149 2.3
7R-2, 112 34.02 12 10 R 5 + 1.6 345.1 –14.3 30 80 0.1220 10.5
7R-2, 122 34.12 13 10 R 9 + 6.7 310.7 –7 20 70 0.3701 2.0
7R-2, 134 34.24 13 10 R 3 + 5.8 281.2 –8.1 60 80 0.1375 0.7
7R-3, 4 34.44 1 10 R 3 + 1.2 286.3 –10.7 60 80 0.1770 1.7
7R-3, 30 34.70 2 10 R 3 + 0.6 236.4 –8.1 60 80 0.1730 1.2
8R-1, 126 37.76 20 10 R 3 + 2.8 274.3 –7.8 60 80 0.2298 1.5
8R-1, 127 37.77 20B 10 R 6 + 3.3 221.6 –17 15 35 1.0595 7.0
8R-2, 8 37.94 1 10 R 3 + 5.1 226.2 –17.1 60 80 0.0957 1.1
8R-2, 58 38.44 6 10 R 3 + 2.2 145.5 –0.9 60 80 0.1259 1.2
8R-2, 70 38.56 7 10 R 3 + 4.3 147.1 –15.2 60 80 0.0951 1.0
8R-2, 80 38.66 8 10 R 3 + 2.0 235.1 –9.9 60 80 0.1639 1.4
8R-2, 120 39.06 13 10 R 3 + 1.6 201.1 –11.6 60 80 0.2129 2.2
8R-2, 138 39.24 14 10 R 3 + 1.8 250.7 –0.1 60 80 0.1320 1.3
8R-3, 4 39.36 1 10 R 4 + 4.4 207.1 –14 50 80 0.0765 1.0
8R-3, 14 39.46 2 10 R 3 + 3.5 235.9 0.8 60 80 0.0470 1.2
8R-3, 50 39.82 7 10 R 5 + 5.4 265.4 –17.1 40 80 0.0837 1.7
9R-1, 38 41.18 6 10 R 3 + 1.8 88.5 –48.7 40 60 0.0684 2.3
9R-1, 50 41.30 7 10 R 3 + 3.1 204.0 10.0 40 60 0.1868 1.3
9R-1, 64 41.44 8 10 R 3 + 0.5 285.3 5.6 40 60 0.1880 1.2
9R-1, 86 41.66 10 10 R 3 + 4.3 286.8 25.7 40 60 0.1975 1.3
9R-1, 106 41.86 12 10 R 4 + 1.9 219.6 6.3 30 60 0.1959 2.1
10M-1, 26 46.06 6 16 R 3 + 8.6 101.5 7.8 40 60 0.1624 2.5
10M-1, 27 46.07 6 16 R 9 + 4.0 84.8 –31 25 100 0.4021 0.8
10M-1, 34 46.14 7 16 R 3 + 4.8 7.9 –2.1 40 60 0.2035 4.9
10M-1, 100 46.80 18 10 R 3 + 2.4 49.1 –0.7 40 60 0.0832 7.5
10M-2, 6 47.36 1 10 R 4 + 1.3 286.4 –1.2 30 60 0.1770 13.8
10M-2, 22 47.52 3 10 R 4 + 5.3 297.4 –1.6 30 60 0.2551 12.1
209-1270C-












1R-1, 28 0.28 6 2 I 3 + 4.3 357.3 20.9 30 40 0.0625 9.2
1R-1, 36 0.36 7 2 I 6 F 2.2 352.6 26.0 10 40 2.3133 48.4
1R-1, 50 0.50 9 2 I 4 + 3.2 333.1 16.1 25 40 0.3147 7.0
1R-1, 50 0.50 9 2 I 8 F 1.5 332.2 9.5 8 40 1.4717 80.4
1R-1, 62 0.62 10 2 I 4 + 3.1 358.9 15.7 25 40 0.2938 9.7
1R-1, 63 0.63 10 2 I 8 F 1.0 357.3 8.4 10 50 1.9235 73.1
1R-1, 71 0.71 11 2 I 10 F 1.7 8.2 –8.9 10 80 2.2714 76.5
1R-1, 76 0.76 11 2 I 7 + 3.4 2.4 28.7 10 40 3.2191 43.6
2R-1, 44 12.94 8 2 I 5 + 0.9 24.1 5.7 20 40 0.5719 27.4
2R-1, 67 13.17 12 2 I 10 F 1.9 153.3 –12.5 6 50 1.0360 85.6
2R-1, 68 13.18 12 2 I 3 F 0.4 159.9 –3.5 25 40 0.1177 21.5
2R-1, 84 13.34 14 2 I 3 A 2.5 145.8 0.6 25 40 0.0939 16.6
209-1270D-












3R-1, 54 19.44 8 2 I 4 F 2.5 30.6 21.9 20 40 0.1848 19.5
3R-1, 59 19.49 8B 2 I 9 F 3.5 16.8 –2.7 8 40 0.2050 39.4
3R-1, 98 19.88 11 2 I 4 F 0.8 84.3 –10.7 20 40 0.2500 43.2
3R-1, 110 20.00 12 2 I 4 F 2.1 0.2 18.8 20 40 0.8137 28.5
3R-2, 12 20.28 1 2 I 5 F 1.4 20.9 22.8 10 40 3.6260 67.1
3R-2, 44 20.60 3 2 I 5 F 1.8 343.2 27.1 10 40 2.2584 66.8
3R-2, 49 20.65 3 2 I 7 F 1.4 344.2 3.6 20 60 0.3811 47.0
3R-2, 53 20.69 3 2 I 8 F 1.1 346.9 0.9 15 60 1.2088 66.8
3R-2, 72 20.88 4 2 I 3 + 2.4 32.9 15.3 30 40 0.0942 14.3
3R-2, 86 21.02 5 2 I 5 F 3.0 2.1 23.5 10 40 1.2745 53.6
4R-1, 46 23.86 8 2 I 6 F 1.2 336.7 19.7 10 40 2.2843 63.1
4R-1, 68 24.08 10 2 I 6 F 3.1 359.3 20.5 10 40 1.3766 56.9
4R-1, 100 24.40 12 1.5 I 4 F 2.4 338.8 17.3 20 40 1.2218 25.0
4R-1, 91 24.31 12A 1.5 I 9 F 1.3 332.3 4.9 15 80 3.0146 74.6
4R-1, 101 24.41 12B 1.5 I 9 F 1.7 328.0 4.7 15 80 2.8799 67.8
4R-2, 16 25.06 3 2 I 4 F 4.1 7.8 16.5 20 40 0.3484 24.0
4R-2, 38 25.28 5 1 I 5 F 2.5 347.3 19.9 15 40 1.1336 45.5
4R-2, 54 25.44 6 1 I 5 F 2.4 18.3 21.6 15 40 1.6320 43.2
5R-1, 26 28.66 5 2 I 5 F 2.0 332.8 42.8 15 40 1.0887 46.1
6R-1, 28 33.18 4 2 R 4 + 1.7 114.1 –38 25 40 0.4149 25.3
6R-1, 33 33.23 4B 2 R 6 F 5.0 92.5 –41.3 15 40 0.6965 109.5

Notes: Lithology: 1.5 = harzburgite/dunite, 2 = harzburgite, 10 = gabbro, 16 = microgabbro. Principal component analysis (PCA) polarity: R = rotate to 180°, I = indeterminate. N = number of points. Decay type: A = anchored to origin, F = free of origin, + = includes origin as point. MAD = maximum angular deviation. PCA (%) = percentage of natural remanent magnetization intensity. This table is also available in ASCII.