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Table T6. Whole-rock major and trace element compositions, Hole U1349A. (See table notes.)

Stratigraphic unit:
324-U1349A-
IV V
Core:
7R 9R 10R 10R 11R* 11R† 12R 13R 14R 14R 14R 15R 16R
Section:
3 2 2 4 5 5 3 4 1 4 6 6 6
Piece:
11A 11 7 7B 1A 1A 15 22 9 8B 4A 4 1
Interval (cm):
111–113 93–95 108–110 42–44 12–15 12–15 119–122 127–128 38–42 96–98 64–66 43–45 0–2
Top depth (mbsf):
168.05 176.02 185.77 187.80 198.58 198.58 206.56 217.68 222.08 226.36 228.80 238.30 247.76
Major element oxide (wt%):
SiO2 40.01 46.17 39.09 43.40 40.47 15.88 46.51 46.98 43.01 47.85 48.59 48.77 47.70
TiO2 1.19 1.18 1.01 1.02 1.06 0.40 0.93 0.86 0.93 0.94 0.94 1.04 0.94
Al2O3 17.04 16.49 17.06 17.00 17.11 7.64 16.47 15.50 16.38 16.69 16.63 18.14 16.37
Fe2O3T 12.48 11.99 12.91 12.33 14.65 6.41 10.13 11.94 14.37 11.34 11.83 10.24 11.68
MnO 0.13 0.12 0.12 0.14 0.13 0.23 0.16 0.16 0.16 0.22 0.23 0.14 0.19
MgO 3.30 7.94 4.41 4.36 5.33 2.83 8.67 10.89 6.00 15.62 12.01 10.67 8.76
CaO 23.26 12.52 20.66 19.42 14.89 68.16 13.30 8.36 14.86 4.10 9.65 9.06 12.24
Na2O 1.78 2.01 1.80 2.01 0.67 0.02 1.70 1.62 1.70 2.14 2.06 2.33 2.14
K2O 2.77 1.38 1.83 1.74 5.90 1.68 2.28 1.92 2.71 0.80 BD 0.02 BD
P2O5 0.13 0.11 0.16 0.09 0.66 0.08 0.10 0.04 0.13 0.01 BD BD 0.08
Totals:
102.10 99.90 99.05 101.51 100.86 103.32 100.26 98.28 100.24 99.71 101.95 100.40 100.09
LOI 15.65 4.63 10.57 10.03 14.47 34.76 6.51 5.50 10.65 2.60 4.99 3.21 2.37
Major element oxide (wt%) normalized to 100 wt%:
SiO2 39.19 46.22 39.47 42.75 40.12 15.37 46.39 47.81 42.90 47.99 47.66 48.58 47.66
TiO2 1.16 1.18 1.02 1.00 1.06 0.39 0.93 0.88 0.93 0.94 0.92 1.03 0.94
Al2O3 16.69 16.51 17.22 16.75 16.96 7.39 16.42 15.78 16.34 16.74 16.31 18.06 16.35
Fe2O3T 12.23 12.01 13.04 12.14 14.52 6.20 10.10 12.15 14.34 11.38 11.60 10.20 11.67
MnO 0.13 0.12 0.12 0.14 0.13 0.22 0.16 0.16 0.16 0.22 0.23 0.14 0.19
MgO 3.23 7.94 4.45 4.29 5.28 2.74 8.64 11.08 5.99 15.67 11.78 10.63 8.75
CaO 22.79 12.53 20.86 19.13 14.77 65.97 13.27 8.51 14.82 4.11 9.46 9.02 12.23
Na2O 1.74 2.01 1.82 1.98 0.66 0.02 1.70 1.65 1.70 2.15 2.02 2.32 2.14
K2O 2.71 1.38 1.84 1.71 5.85 1.62 2.27 1.95 2.70 0.81 BD 0.02 BD
P2O5 0.13 0.11 0.16 0.09 0.65 0.08 0.10 0.05 0.13 0.01 BD BD 0.08
Totals:
100.00 100.00 100.00 100.00 100.00 100.00 100.00 100.00 100.00 100.00 100.00 100.00 100.00
Mg# 38.1 60.6 44.3 45.1 45.8 50.7 66.6 68.0 49.3 76.2 70.3 70.8 63.6
Trace element (ppm):
Ba 63 42 47 50 93 36 76 37 43 16 14 14 22
Sr 148 94 145 114 258 232 85 50 96 62 72 82 72
Zr 51 53 45 45 55 16 45 51 50 44 44 45 54
Y 30 26 31 29 35 17 24 22 24 9 19 16 21
V 324 345 317 296 296 98 297 282 265 310 307 338 310
Sc 50 51 53 50 44 21 48 47 49 50 51 56 50
Cu 97 151 144 143 104 45 174 121 94 132 139 152 133
Zn 75 104 58 88 165 35 151 67 184 84 80 74 77
Co 33 43 40 57 82 27 128 61 49 81 70 72 78
Cr 355 338 541 427 607 180 510 498 566 536 548 560 513
Ni 124 161 158 127 250 103 295 303 211 350 286 278 263

Notes: * = reddish (oxidized) split, † = highly vesicular split. All analyses were conducted on samples ignited to 975°C. Fe2O3T = total iron expressed as Fe2O3. LOI = weight loss on ignition. Mg# = 100 x (Mg2+/[Mg2+ + Fe2+]), assuming that Fe2O3/FeO = 0.15. BD = below detection.

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