Table T3. Glass and whole-rock major and trace element compositions of basalts, Site 1157.

  Hole 1157A Hole 1157B
Core, section: 1W-CC 1W-CC 1W-CC 1W-CC 2R-1 2R-1 2R-1 2R-1 3R-2 3R-2 3R-2 3R-2 3R-1 3R-1 3R-1 3R-1 4R-1 4R-1 6R-1 6R-1 6R-1 6R-1
Interval (cm): 13-17 13-17 13-17 13-17 86-90 86-90 86-90 86-90 19-22 19-22 19-22 19-22 62-67 62-67 62-67 62-67 136-138 136-138 43-47 43-47 43-47 43-47
Depth (mbsf): 9.78 9.78 9.78 9.78 200.86 200.86 200.86 200.86 207.69 207.69 207.69 207.69 139.12 139.12 139.12 139.12 144.36 144.36 152.63 152.63 152.63 152.63
Piece: 1 1 1 1 16 16 16 16 3B 3B 3B 3B 9 9 9 9 17 17 7 7 7 7
Analysis: ICP ICP ICP ICP XRF XRF ICP ICP XRF XRF ICP ICP XRF XRF ICP ICP ICP ICP XRF XRF ICP ICP
Rock type: Glass Glass Glass Glass Aphyric basalt Sparsely to moderately plagioclase-olivine phyric basalt Moderately plagioclase-olivine phyric basalt Glass Glass Moderately plagioclase-olivine phyric basalt
Major element (wt%)



















SiO2 52.60 51.54 51.35 52.03 48.13 47.84 48.40 51.05 48.71 48.34 49.56 50.47 48.94 48.23 49.87 50.53 52.31 52.14 49.17 49.30 50.54 50.45
TiO2 1.47 1.37 1.40 1.43 1.87 1.94 1.92 2.03 1.24 1.21 1.25 1.29 1.28 1.36 1.50 1.51 1.58 1.62 1.47 1.52 1.51 1.46
Al2O3 16.20 15.72 15.98 16.22 13.98 13.94 14.22 14.53 16.13 16.09 16.05 16.60 15.28 15.16 15.81 15.92 15.69 15.94 15.76 15.79 15.99 15.97
Fe2O3 9.87 9.45 9.10 9.35 12.21 12.20 12.07 12.59 8.62 8.66 8.70 8.88 9.43 9.40 9.45 9.47 9.59 9.77 9.21 9.24 9.35 9.34
MnO 0.16 0.15 0.16 0.16 0.17 0.18 0.18 0.20 0.13 0.13 0.14 0.15 0.11 0.12 0.15 0.15 0.16 0.16 0.14 0.15 0.16 0.15
MgO 8.92 8.31 8.24 8.47 7.13 7.08 7.19 7.45 7.77 7.76 7.86 8.03 7.12 7.03 7.13 7.09 7.96 7.92 7.13 7.14 7.34 7.14
CaO 12.08 11.64 11.37 11.70 10.84 10.76 10.84 10.87 11.72 11.67 11.68 11.81 11.09 10.94 11.08 11.13 11.36 11.37 10.96 10.93 11.13 10.96
Na2O 2.98 2.82 2.95 3.05 2.70 2.55 2.71 2.30 2.67 2.76 2.85 2.73 2.98 2.91 3.14 2.81 2.92 2.98 2.95 2.84 3.13 3.08
K2O 0.13 0.11 0.13 0.13 0.26 0.26 0.26 0.22 0.24 0.24 0.25 0.23 0.20 0.21 0.24 0.23 0.10 0.10 0.24 0.25 0.25 0.25
P2O5 0.17 0.15 0.14 0.16 0.19 0.19 0.23 0.16 0.13 0.13 0.15 0.13 0.15 0.15 0.18 0.15 0.18 0.17 0.15 0.15 0.17 0.16
LOI



0.65 0.65

0.95 0.95

0.87 0.87



0.77 0.77

CO2





















H2O





















Total: 104.59 101.26 100.82 102.70 98.13 97.59 98.03 101.40 98.31 97.94 98.49 100.32 97.45 96.38 98.54 99.01 101.83 102.18 97.95 98.08 99.59 98.98
Trace element (ppm)



















Nb



6


6


6




5


Zr 105 93 112 101 142
141 125 97
89 86 118
114 108 123 119 120
115 111
Y 32 30 34 35 43
47 42 30
29 27 36
37 35 38 37 35
37 35
Sr 132 117 111 126 111
110 111 132
130 132 138
138 135 131 132 139
135 134
Rb



3


3


2




3


Zn



101


70


80




80


Cu



62


60


56




59


Ni 131 122 120 120 124
119 105 162
143 136 148
133 122 113 116 151
139 137
Cr 367 311 349 362 274
253 234 364
347 346 395
340 323 362 356 418
355 348
V



337


162


249




254


Ce



35


18


32




33


Ba 10 8 9 10

10 10

10 10

15 15 12 12

13 13
Sc 35 32 38 35

39 43

30 36

34 38 36 37

36 36

Notes: CC = core catcher; LOI = loss on ignition. This table is also available in ASCII format.