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Table T4. Whole-rock major and trace element compositions, Hole U1350A. (See table notes.)

Stratigraphic unit:
324-U1350A-
IIa
Core:
7R 8R 8R 8R 9R 9R 10R 11R 11R 12R 13R 13R 14R 15R
Section:
1 1 2 3 2 4 2 1 2 1 1 2 2 1
Piece:
18 3B 9 10 1E 3 6 6 7 7 3 6 2 12B
Interval (cm):
122–123 43–45 51–55 81–84 57–58 85–87 33–35 59–60 80–81 64–68 54–56 68–71 13–16 121–124
Top depth (mbsf):
153.82 155.72 157.28 158.88 163.92 166.58 173.68 182.09 183.82 191.74 196.44 198.01 202.00 206.71
Major element oxide (wt%):
SiO2 50.93 50.65 49.46 50.91 53.04 51.04 49.73 49.30 49.17 50.10 49.46 49.74 51.14 51.87
TiO2 1.86 1.81 2.40 2.40 2.41 2.36 2.32 2.27 2.32 2.20 2.10 2.14 2.22 2.09
Al2O3 16.02 15.82 14.63 15.00 15.42 15.19 14.73 14.48 15.00 16.08 15.40 15.77 16.53 15.85
Fe2O3T 11.59 12.64 14.08 11.01 12.25 13.29 14.29 14.09 11.74 13.55 13.52 13.63 12.66 10.19
MnO 0.10 0.12 0.17 0.18 0.15 0.12 0.17 0.14 0.22 0.15 0.19 0.14 0.15 0.12
MgO 6.64 6.58 7.39 6.15 6.11 6.12 7.21 7.31 5.73 7.12 6.67 7.33 5.94 6.79
CaO 9.68 10.54 10.57 11.52 10.67 10.16 10.38 9.10 12.82 10.89 12.57 10.59 10.59 10.07
Na2O 3.24 3.11 3.18 3.37 3.40 3.28 3.27 3.39 3.38 3.24 3.14 3.11 3.40 3.28
K2O 0.16 0.10 0.21 0.61 0.59 0.49 0.25 0.21 0.44 0.21 0.09 0.15 0.20 0.17
P2O5 0.20 0.19 0.29 0.30 0.31 0.28 0.30 0.30 0.26 0.26 0.23 0.25 0.22 0.22
Totals:
100.43 101.57 102.39 101.44 104.35 102.32 102.64 100.60 101.08 103.80 103.37 102.85 103.04 100.67
LOI 1.17 1.10 1.33 2.96 0.73 0.02 0.44 1.11 4.40 1.93 2.02 2.66 2.48 1.28
Major element oxide (wt%) normalized to 100 wt%:
SiO2 50.71 49.87 48.31 50.19 50.99 49.88 48.45 49.01 48.64 48.59 48.28 48.37 49.63 51.52
TiO2 1.85 1.79 2.34 2.37 2.33 2.31 2.27 2.26 2.29 2.14 2.05 2.08 2.15 2.08
Al2O3 15.95 15.58 14.29 14.79 14.87 14.85 14.35 14.40 14.84 15.49 14.92 15.34 16.04 15.75
Fe2O3T 11.54 12.44 13.75 10.85 11.43 12.98 13.92 14.01 11.62 12.67 12.55 13.26 12.29 10.13
MnO 0.10 0.12 0.16 0.18 0.14 0.11 0.16 0.14 0.22 0.14 0.18 0.14 0.14 0.12
MgO 6.61 6.48 7.22 6.06 5.88 5.99 7.03 7.27 5.67 6.91 6.49 7.12 5.76 6.75
CaO 9.64 10.37 10.32 11.35 10.28 9.93 10.11 9.04 12.68 10.52 12.21 10.30 10.27 10.01
Na2O 3.23 3.06 3.10 3.32 3.23 3.20 3.19 3.37 3.35 3.11 3.03 3.02 3.30 3.26
K2O 0.16 0.10 0.21 0.60 0.56 0.48 0.24 0.20 0.43 0.20 0.08 0.14 0.19 0.17
P2O5 0.20 0.19 0.29 0.29 0.29 0.27 0.29 0.30 0.26 0.23 0.20 0.24 0.21 0.22
Totals:
100.00 100.00 100.00 100.00 100.00 100.00 100.00 100.00 100.00 100.00 100.00 100.00 100.00 100.00
Mg# 57.1 54.8 55.0 56.5 54.5 51.8 54.0 54.7 53.2 56.0 54.6 55.6 52.2 60.8
Trace element (ppm):
Ba 23 21 63 734 103 89 50 49 103 19 56 16 29 28
Sr 218 216 277 304 279 281 259 254 269 227 222 221 239 225
Zr 110 105 167 169 175 155 154 163 143 131 128 126 132 131
Y 27 24 40 34 32 29 34 38 32 35 32 33 31 26
V 386 377 364 359 370 356 374 359 379 433 415 429 439 395
Sc 52 52 43 43 44 43 46 44 47 52 50 51 52 49
Cu 163 149 108 125 125 115 132 124 149 162 160 162 166 158
Zn 108 99 118 98 99 99 117 108 106 110 113 105 112 99
Co 52 86 74 81 89 75 64 52 76 54 92 86 61 64
Cr 265 281 109 96 92 107 97 85 69 232 236 228 241 220
Ni 52 62 51 51 55 55 42 38 42 59 74 68 84 68

Notes: All analyses were conducted on samples ignited to 1025°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.

Stratigraphic unit:
324-U1350A-
IIa IIb IIc
Core:
16R 17R 17R 17R 17R 17R 18R 18R 19R 19R 20R 20R 21R 22R
Section:
3 1 2 2 2 3 1 3 1 3 1 3 2 1
Piece:
1B 3A 3A 13 18 8B 12 11 1G 1 7 1 14 7
Interval (cm):
38–40 24–26 16–19 100–103 133–136 87–89 114–115 79–81 93–95 3–5 36–37 9–11 108–111 41–43
Top depth (mbsf):
212.34 220.14 221.56 222.40 222.72 223.66 230.64 233.22 240.03 242.00 249.06 251.50 260.88 268.20
Major element oxide (wt%):
SiO2 49.49 51.05 48.62 47.81 49.13 48.40 50.90 49.59 50.24 49.31 49.94 47.95 48.14 48.13
TiO2 1.39 2.54 1.71 2.09 2.18 2.17 2.14 2.10 2.04 2.11 2.15 2.01 1.82 2.06
Al2O3 15.55 14.69 14.68 14.13 14.83 14.49 15.27 14.19 14.26 15.05 15.56 14.59 14.97 14.72
Fe2O3T 10.22 13.54 14.04 14.03 13.98 13.67 11.77 14.08 11.63 13.73 13.73 10.95 11.65 12.21
MnO 0.15 0.13 0.14 0.21 0.18 0.18 0.14 0.24 0.14 0.13 0.14 0.11 0.11 0.13
MgO 7.89 6.46 7.84 7.14 7.39 7.02 7.22 6.99 7.25 7.56 7.44 6.83 7.70 7.46
CaO 13.37 8.24 9.78 10.96 10.54 11.56 10.19 12.29 10.65 9.89 10.58 9.39 10.04 9.45
Na2O 2.07 3.54 2.90 3.02 3.13 2.93 3.27 2.82 3.04 3.11 3.17 3.07 2.91 3.13
K2O 0.10 0.73 0.13 0.21 0.19 0.21 0.33 0.22 0.38 0.22 0.13 0.12 0.19 0.14
P2O5 0.18 0.31 0.24 0.25 0.28 0.25 0.24 0.26 0.22 0.26 0.26 0.18 0.21 0.24
Totals:
100.41 101.24 100.10 99.85 101.82 100.89 101.47 102.78 99.84 101.37 103.11 95.20 97.73 97.67
LOI 2.04 1.81 2.36 3.40 2.68 1.85 2.98 1.92 2.26 1.50 1.70 1.32 1.97 1.63
Major element oxide (wt%) normalized to 100 wt%:
SiO2 49.29 50.42 48.58 47.88 48.25 47.97 50.16 48.25 50.32 48.64 48.43 50.37 49.25 49.28
TiO2 1.38 2.51 1.71 2.09 2.14 2.15 2.11 2.04 2.04 2.08 2.09 2.11 1.86 2.11
Al2O3 15.49 14.51 14.67 14.16 14.56 14.36 15.05 13.80 14.28 14.85 15.09 15.33 15.32 15.07
Fe2O3T 10.18 13.38 14.02 14.05 13.73 13.55 11.60 13.70 11.65 13.55 13.32 11.50 11.92 12.50
MnO 0.15 0.13 0.14 0.21 0.18 0.18 0.13 0.23 0.15 0.13 0.14 0.12 0.11 0.14
MgO 7.85 6.38 7.84 7.15 7.26 6.96 7.12 6.80 7.26 7.46 7.22 7.17 7.88 7.63
CaO 13.32 8.14 9.77 10.97 10.35 11.46 10.05 11.96 10.67 9.76 10.26 9.86 10.27 9.68
Na2O 2.07 3.50 2.90 3.02 3.07 2.91 3.22 2.75 3.04 3.07 3.08 3.22 2.98 3.21
K2O 0.10 0.72 0.13 0.21 0.18 0.21 0.32 0.21 0.38 0.21 0.13 0.12 0.19 0.14
P2O5 0.18 0.31 0.24 0.25 0.27 0.25 0.23 0.25 0.22 0.25 0.25 0.19 0.21 0.24
Totals:
100.00 100.00 100.00 100.00 100.00 100.00 100.00 100.00 100.00 100.00 100.00 100.00 100.00 100.00
Mg# 64.2 52.6 56.5 54.2 55.2 54.5 58.8 53.6 59.2 56.2 55.8 59.2 60.6 58.7
Trace element (ppm):
Ba 40 958 22 46 181 50 84 47 73 73 36 37 33 56
Sr 202 321 156 267 284 267 282 266 252 223 228 193 190 216
Zr 89 192 108 143 149 150 139 144 135 123 126 118 100 133
Y 21 34 39 33 35 38 26 34 29 37 35 32 35 38
V 259 379 406 338 351 350 361 339 336 414 422 391 380 371
Sc 41 43 50 43 44 44 46 42 44 51 52 50 51 49
Cu 115 98 114 125 127 125 143 126 125 174 179 164 178 118
Zn 75 109 119 103 107 108 88 98 94 100 107 85 78 97
Co 56 61 45 81 48 64 53 59 58 53 57 56 56 60
Cr 299 62 135 130 136 126 132 140 117 171 179 159 182 77
Ni 104 31 46 64 48 51 48 56 52 48 56 56 59 52

 

Stratigraphic unit:
324-U1350A-
IIc III IV
Core:
22R 22R 23R 23R 24R 24R 25R 25R 25R 25R 25R 26R 26R 26R 26R
Section:
3 5 2 4 1 3 1 2 4 6 8 1 4 6 8
Piece:
1J 1D 4 3A 4B 2A 4 3B 6A 5 1B 6B 1A 6B 1
Interval (cm):
117–119 84–85 69–71 97–99 127–130 38–40 26–30 116–119 78–81 83–88 26–28 75–78 31–33 68–71 4–7
Top depth (mbsf):
271.34 273.82 279.51 282.64 288.27 290.25 296.96 299.36 301.82 304.48 306.42 306.95 310.58 313.67 315.33
Major element oxide (wt%):
SiO2 48.07 47.54 47.58 47.71 46.89 47.39 47.92 47.37 47.76 48.28 48.92 48.51 47.96 48.19 47.34
TiO2 1.50 1.49 1.54 1.47 1.55 1.60 1.29 1.34 1.32 1.28 1.44 1.36 1.36 1.29 1.36
Al2O3 16.67 16.08 17.00 16.07 17.02 17.21 17.02 16.48 17.13 18.02 16.70 16.40 16.87 15.77 16.12
Fe2O3T 10.51 10.71 9.98 10.52 10.84 10.45 9.56 9.85 9.71 8.96 10.66 10.58 9.34 10.09 9.55
MnO 0.14 0.14 0.13 0.15 0.15 0.16 0.16 0.15 0.16 0.13 0.17 0.16 0.17 0.18 0.19
MgO 6.06 6.28 5.75 6.95 4.86 5.05 7.36 7.55 7.69 7.16 8.77 9.32 7.80 9.44 7.97
CaO 13.04 12.85 12.04 12.19 13.83 12.75 11.02 10.50 10.48 10.91 7.18 5.33 10.20 7.84 9.45
Na2O 2.41 2.39 2.60 2.43 2.55 2.65 2.61 2.67 2.72 2.67 2.82 2.63 2.74 2.56 2.55
K2O BD BD BD BD 0.06 0.02 0.16 0.08 0.10 0.16 1.62 3.00 0.52 1.92 1.46
P2O5 0.11 0.11 0.13 0.10 0.11 0.16 0.14 0.15 0.14 0.08 0.18 0.15 0.13 0.15 0.15
Totals:
98.52 97.60 96.73 97.59 97.86 97.45 97.25 96.15 97.21 97.65 98.45 97.44 97.10 97.43 96.14
LOI 1.25 1.93 2.02 1.33 1.72 1.72 2.10 1.41 2.18 4.04 3.24 3.89 2.37 3.31 3.45
Major element oxide (wt%) normalized to 100 wt%:
SiO2 48.80 48.71 49.19 48.89 47.91 48.63 49.28 49.27 49.13 49.44 49.69 49.79 49.39 49.46 49.24
TiO2 1.52 1.53 1.59 1.50 1.59 1.65 1.33 1.40 1.35 1.31 1.46 1.39 1.40 1.32 1.41
Al2O3 16.93 16.48 17.57 16.47 17.39 17.66 17.51 17.14 17.63 18.46 16.97 16.83 17.38 16.19 16.77
Fe2O3T 10.66 10.97 10.31 10.78 11.08 10.72 9.83 10.25 9.99 9.17 10.83 10.86 9.62 10.36 9.94
MnO 0.14 0.15 0.13 0.15 0.16 0.16 0.16 0.15 0.16 0.14 0.18 0.16 0.18 0.18 0.20
MgO 6.16 6.44 5.95 7.13 4.97 5.19 7.56 7.85 7.91 7.33 8.91 9.56 8.04 9.69 8.28
CaO 13.24 13.17 12.45 12.49 14.13 13.08 11.33 10.93 10.78 11.17 7.29 5.48 10.50 8.05 9.83
Na2O 2.45 2.45 2.68 2.49 2.60 2.72 2.69 2.78 2.80 2.74 2.86 2.70 2.82 2.63 2.65
K2O BD BD BD BD 0.07 0.02 0.16 0.08 0.10 0.16 1.64 3.08 0.54 1.97 1.52
P2O5 0.11 0.11 0.13 0.10 0.11 0.16 0.15 0.16 0.14 0.09 0.18 0.15 0.13 0.15 0.16
Totals:
100.00 100.00 100.00 100.00 100.00 100.00 100.00 100.00 100.00 100.00 100.00 100.00 100.00 100.00 100.00
Mg# 57.3 57.7 57.3 60.6 51.1 53.0 64.2 64.1 64.8 65.0 65.7 67.2 66.0 68.5 66.0
Trace element (ppm):
Ba 27 31 32 30 27 35 39 38 43 41 66 85 51 57 58
Sr 199 196 207 191 202 210 174 172 176 187 169 157 177 155 168
Zr 84 84 86 83 88 87 67 67 67 64 70 65 67 63 63
Y 24 24 23 22 27 27 26 31 25 13 29 27 20 23 16
V 296 296 303 290 311 316 284 290 283 281 310 278 298 279 294
Sc 40 40 41 39 42 44 42 45 43 45 47 43 46 40 43
Cu 149 144 154 148 156 161 143 156 147 153 158 140 154 137 148
Zn 80 85 81 88 91 100 94 99 89 65 105 126 72 73 76
Co 56 61 60 57 57 67 53 49 50 46 45 52 47 39 53
Cr 265 272 261 261 272 280 217 227 211 208 240 221 217 193 205
Ni 124 143 125 108 124 126 84 79 72 76 76 88 75 79 77

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