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Table T7. Whole-rock major and trace element compositions, Hole U1347A. (See table notes.)

 
Stratigraphic unit:
324-U1347A-
IV V VII IX X
Core:
12R 12R 13R 13R 13R* 13R† 14R 14R 15R 15R 16R 16R 17R 18R 18R 18R 19R 19R 19R 20R
Section:
1 2 2 6 6 7 1 2 1 2 2 5 2 1 3 5 1 3 3 1
Piece:
9 5 3 1 1 6 15 5 3 4 8 4A 7 2 6 4 3 8 15 5
Interval (cm):
59–62 39–42 53–55 15–18 80–83 28–30 108–111 55–57 9–11 21–23 104–106 102–105 48–51 43–46 124–126 78–80 107–110 51–52 123–125 96–98
Top depth (mbsf):
160.19 161.33 169.02 172.97 173.62 174.52 177.68 178.62 186.28 187.68 197.34 200.60 206.30 214.43 217.82 220.24 224.67 226.80 227.52 234.16
Major element oxide (wt%):
SiO2 49.34 49.02 47.00 49.13 50.70 50.26 47.09 46.17 48.64 48.19 45.43 49.84 46.87 49.26 49.62 47.94 47.16 46.78 47.66 47.99
TiO2 2.26 2.14 2.14 2.15 2.01 1.54 2.20 2.20 2.13 2.11 2.41 2.41 1.69 1.75 1.81 1.76 1.74 1.68 1.72 1.73
Al2O3 14.55 13.96 13.57 14.14 13.43 10.12 13.60 13.50 13.56 13.55 13.21 15.67 15.76 16.14 15.27 14.51 14.53 14.77 14.58 15.19
Fe2O3T 14.82 14.67 14.50 13.73 12.42 19.51 15.98 14.94 14.10 13.94 13.69 12.47 12.12 12.23 12.58 12.36 12.16 12.29 12.39 12.07
MnO 0.16 0.22 0.22 0.15 0.16 0.09 0.17 0.19 0.22 0.26 0.24 0.15 0.15 0.14 0.22 0.21 0.22 0.21 0.21 0.20
MgO 7.17 6.76 6.71 6.97 5.76 10.93 7.97 7.34 6.84 6.13 5.29 4.94 6.43 6.56 6.57 6.70 6.22 6.24 6.36 6.25
CaO 10.12 11.65 11.57 9.57 8.88 3.63 9.60 10.39 11.37 13.11 12.97 9.18 10.50 10.47 12.51 12.03 12.62 12.79 12.46 11.95
Na2O 2.75 2.42 2.45 2.68 2.92 2.63 2.59 2.63 2.41 2.34 2.70 3.17 2.96 2.97 2.41 2.31 2.28 2.36 2.22 2.40
K2O 0.07 0.17 0.14 0.12 0.33 0.34 0.08 0.09 0.19 0.25 0.27 0.29 0.10 0.09 0.16 0.15 0.20 0.25 0.45 0.16
P2O5 0.27 0.26 0.28 0.24 0.35 0.14 0.20 0.29 0.27 0.27 0.30 0.30 0.27 0.26 0.24 0.22 0.22 0.20 0.20 0.20
Totals:
101.52 101.28 98.58 98.87 96.96 99.18 99.48 97.74 99.72 100.14 96.53 98.42 96.86 99.87 101.37 98.18 97.33 97.58 98.24 98.13
LOI 0.87 1.13 1.58 1.26 2.53 3.40 0.73 1.57 1.34 3.10 1.86 2.93 2.64 1.94 1.81 0.90 1.10 1.48 2.59 1.95
Major element oxide (wt%) normalized to 100 wt%:
SiO2 48.60 48.40 47.68 49.69 52.29 50.67 47.33 47.23 48.77 48.12 47.06 50.64 48.39 49.33 48.94 48.83 48.45 47.94 48.51 48.90
TiO2 2.22 2.12 2.18 2.17 2.07 1.55 2.21 2.25 2.14 2.11 2.50 2.45 1.74 1.75 1.78 1.79 1.78 1.73 1.75 1.76
Al2O3 14.34 13.79 13.76 14.30 13.85 10.20 13.67 13.81 13.60 13.53 13.69 15.92 16.27 16.16 15.06 14.78 14.93 15.14 14.84 15.48
Fe2O3T 14.59 14.49 14.71 13.89 12.81 19.68 16.06 15.28 14.14 13.92 14.18 12.67 12.52 12.24 12.41 12.59 12.49 12.59 12.61 12.30
MnO 0.16 0.21 0.22 0.15 0.16 0.09 0.17 0.20 0.22 0.26 0.25 0.15 0.16 0.14 0.21 0.21 0.22 0.21 0.22 0.20
MgO 7.07 6.68 6.80 7.05 5.94 11.02 8.01 7.51 6.86 6.12 5.48 5.02 6.64 6.57 6.48 6.82 6.39 6.40 6.47 6.37
CaO 9.97 11.51 11.74 9.67 9.16 3.66 9.65 10.63 11.40 13.10 13.44 9.32 10.84 10.49 12.34 12.26 12.96 13.11 12.68 12.18
Na2O 2.71 2.39 2.49 2.71 3.01 2.66 2.61 2.69 2.41 2.33 2.80 3.22 3.05 2.98 2.38 2.35 2.34 2.42 2.26 2.44
K2O 0.07 0.17 0.15 0.12 0.34 0.34 0.09 0.09 0.19 0.25 0.28 0.30 0.10 0.09 0.16 0.15 0.20 0.26 0.45 0.16
P2O5 0.27 0.26 0.28 0.24 0.37 0.14 0.20 0.29 0.27 0.27 0.32 0.30 0.28 0.26 0.23 0.22 0.23 0.21 0.21 0.20
Totals:
100.00 100.00 100.00 100.00 100.00 100.00 100.00 100.00 100.00 100.00 100.00 100.00 100.00 100.00 100.00 100.00 100.00 100.00 100.00 100.00
Mg# 53.0 51.8 51.8 54.1 51.9 56.6 53.7 53.4 53.0 50.6 47.4 48.0 55.2 55.5 54.9 55.8 54.4 54.2 54.4 54.6
Trace element (ppm):
Ba 26 27 25 32 54 15 13 20 26 35 40 40 22 25 23 24 25 26 24 22
Sr 204 194 206 209 224 90 198 207 205 193 220 237 199 202 201 195 194 195 195 198
Zr 131 119 142 112 193 93 126 128 125 120 136 139 116 117 105 101 101 98 99 100
Y 37 36 39 28 51 14 28 38 35 36 37 33 31 30 33 29 31 29 29 30
V 468 450 432 470 272 316 454 451 439 450 511 508 373 389 375 361 357 350 356 360
Sc 47 44 42 46 36 31 45 44 44 43 44 49 41 42 43 41 41 40 41 42
Cu 251 234 249 251 221 154 249 256 238 240 289 295 215 217 207 203 200 203 177 197
Zn 115 107 114 111 125 59 114 113 115 108 124 129 109 101 104 99 98 96 100 97
Co 72 66 77 60 56 46 64 50 70 65 67 72 44 47 61 56 55 47 54 53
Cr 191 172 173 200 159 191 183 176 179 169 130 184 120 122 211 208 203 204 196 199
Ni 61 56 60 75 76 63 60 59 71 58 62 71 56 50 92 96 89 78 94 91

Notes: * = segregation of dark gray basalt within lighter gray basalt. † = altered glass. 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.

Stratigraphic unit:
324-U1347A-
X XII XIV XV XVI
Core:
20R 21R 21R 22R 22R 22R 23R 23R 23R 24R 24R 24R 25R 25R 25R 26R 28R 29R 29R 29R
Section:
3 3 5 1 3 5 2 4 6 3 7 9 2 4 6 2 1 4 4 5
Piece:
5 2 3 9 3 10 10 1 1 1 6 1 1 6 1 4B 1 1A 9 9
Interval (cm):
71–73 78–80 17–19 55–58 66–68 99–100 114–116 37–39 96–97 58–61 78–80 9–11 79–81 99–102 38–40 78–80 70–73 0–2 117–119 81–83
Top depth (mbsf):
236.56 245.27 247.42 252.95 255.93 259.09 263.36 265.41 267.76 274.67 280.14 281.99 283.29 286.36 288.48 292.98 301.10 313.65 314.82 315.96
Major element oxide (wt%):
SiO2 48.37 50.29 48.09 46.40 50.60 49.94 49.53 48.60 50.06 49.27 48.49 48.24 48.89 49.35 48.74 49.06 48.93 48.70 48.49 48.07
TiO2 1.74 1.95 2.19 2.15 2.36 1.95 1.85 1.84 1.86 1.92 1.88 1.81 1.86 1.84 1.83 2.06 2.04 2.02 2.22 2.08
Al2O3 15.04 16.48 14.29 14.11 15.20 15.30 14.21 13.88 14.89 15.38 14.18 14.33 14.50 14.39 13.84 13.47 13.63 13.55 15.09 14.45
Fe2O3T 12.11 11.31 14.28 14.05 13.39 12.30 13.89 13.61 12.79 12.79 13.63 13.48 13.08 13.60 13.61 14.35 14.57 13.93 12.21 13.88
MnO 0.22 0.12 0.19 0.21 0.11 0.15 0.20 0.22 0.19 0.11 0.18 0.18 0.15 0.19 0.19 0.23 0.20 0.18 0.17 0.18
MgO 6.48 6.97 7.25 7.12 6.85 6.54 7.34 7.08 6.78 7.58 7.42 7.37 7.31 7.40 7.19 6.39 6.15 6.15 5.33 7.07
CaO 12.71 10.35 10.35 12.58 7.80 11.25 11.52 12.18 11.72 9.48 11.15 11.33 10.35 11.45 11.26 11.20 10.91 11.28 11.62 10.61
Na2O 2.37 2.85 3.01 2.92 3.26 2.75 2.39 2.36 2.66 2.85 2.45 2.41 2.65 2.43 2.31 2.40 2.49 2.48 2.95 2.62
K2O 0.13 0.08 0.07 0.08 0.11 0.08 0.09 0.13 0.20 0.06 0.07 0.05 0.05 0.09 0.12 0.21 0.17 0.18 0.27 0.06
P2O5 0.22 0.21 0.32 0.31 0.33 0.24 0.22 0.21 0.21 0.22 0.21 0.19 0.21 0.21 0.18 0.22 0.24 0.26 0.29 0.27
Totals:
99.38 100.61 100.04 99.93 100.02 100.51 101.23 100.09 101.35 99.66 99.65 99.40 99.05 100.93 99.28 99.60 99.33 98.73 98.64 99.28
LOI 1.81 1.67 2.75 3.57 1.06 1.34 0.07 2.28 2.30 0.72 1.06 1.31 0.60 0.27 1.74 0.19 0.20 0.33 2.49 1.03
Major element oxide (wt%) normalized to 100 wt%:
SiO2 48.67 49.99 48.07 46.44 50.59 49.69 48.92 48.56 49.39 49.44 48.66 48.54 49.36 48.90 49.09 49.25 49.26 49.33 49.16 48.42
TiO2 1.75 1.94 2.19 2.15 2.36 1.94 1.83 1.83 1.83 1.93 1.88 1.82 1.88 1.82 1.85 2.07 2.05 2.05 2.25 2.09
Al2O3 15.14 16.38 14.29 14.12 15.20 15.23 14.04 13.87 14.69 15.44 14.23 14.41 14.64 14.26 13.94 13.53 13.72 13.73 15.30 14.55
Fe2O3T 12.18 11.24 14.27 14.06 13.39 12.24 13.72 13.60 12.62 12.83 13.67 13.56 13.20 13.47 13.71 14.40 14.67 14.11 12.38 13.98
MnO 0.22 0.11 0.19 0.21 0.11 0.15 0.20 0.22 0.19 0.11 0.18 0.18 0.15 0.19 0.19 0.23 0.20 0.19 0.17 0.18
MgO 6.52 6.93 7.25 7.13 6.85 6.51 7.25 7.07 6.69 7.61 7.44 7.42 7.38 7.33 7.25 6.42 6.19 6.23 5.41 7.12
CaO 12.78 10.28 10.34 12.59 7.80 11.19 11.38 12.16 11.56 9.51 11.19 11.40 10.45 11.34 11.34 11.25 10.98 11.42 11.78 10.69
Na2O 2.39 2.83 3.01 2.92 3.26 2.74 2.36 2.35 2.63 2.86 2.46 2.43 2.68 2.40 2.32 2.41 2.51 2.51 2.99 2.64
K2O 0.13 0.08 0.07 0.08 0.11 0.08 0.09 0.13 0.20 0.06 0.07 0.05 0.05 0.08 0.12 0.21 0.17 0.18 0.27 0.06
P2O5 0.22 0.21 0.32 0.31 0.33 0.24 0.21 0.21 0.20 0.22 0.21 0.19 0.21 0.20 0.19 0.22 0.24 0.26 0.30 0.27
Totals:
100.00 100.00 100.00 100.00 100.00 100.00 100.00 100.00 100.00 100.00 100.00 100.00 100.00 100.00 100.00 100.00 100.00 100.00 100.00 100.00
Mg# 55.5 58.93 54.17 54.12 54.35 55.30 55.15 54.75 55.21 57.98 55.88 56.01 56.54 55.88 55.16 50.92 49.53 50.68 50.41 54.23
Trace element (ppm):
Ba 23 33 26 25 40 31 25 26 38 28 23 25 30 26 27 36 40 39 45 27
Sr 199 202 184 185 194 183 166 166 182 184 169 168 173 169 163 175 175 195 205 190
Zr 100 110 130 129 145 116 109 108 110 114 112 107 109 108 109 115 113 111 126 117
Y 31 25 37 40 34 31 33 32 32 29 31 32 30 32 32 35 35 33 35 36
V 361 430 467 459 485 440 409 400 411 421 406 386 415 401 406 456 451 443 488 452
Sc 42 49 48 47 50 49 47 46 47 48 46 46 47 46 44 46 45 45 49 47
Cu 203 242 278 281 322 247 224 227 237 242 234 228 247 229 228 250 242 252 304 260
Zn 97 105 119 115 123 94 110 100 104 105 101 107 107 101 103 107 110 103 133 104
Co 61 59 55 51 58 52 81 51 58 55 73 61 62 51 53 54 54 61 49 47
Cr 216 227 143 132 138 205 225 218 215 225 216 209 219 209 209 148 134 140 129 140
Ni 81 100 45 36 42 66 63 62 73 73 68 60 83 64 55 26 31 43 13 33

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