Table T8. Whole-rock major and trace elements for basement rocks determined by ICP-AES, Hole 1203A.
Core, section:
Interval (cm):
Piece:
17R-4
34-36
1C 		19R-1
19-21
2A 		19R-2
136-138
15 		20R-4
44-47
1B 		21R-4
86-88
8 		25R-1
65-67
4C 		26R-3
39-41
1B 		31R-1
27-28
4 		32R-3
85-87
1E 		32R-5
87-88
1C 		35R-3
49-52
5 		35R-4
47-49
1F 		36R-4
92-95
2D
Unit:
1
3
3
3
4
5
6
8
11
11
13
14
14
Rock type:
Plagioclase-
olivine-
phyric basalt
Plagioclase-
olivine-
phyric basalt
Plagioclase-
olivine-
phyric basalt
Plagioclase-
olivine-
phyric basalt
Basalt
tuff
Plagioclase-
olivine-
phyric basalt
Plagioclase
phyric
basalt
Plagioclase-
olivine
phyric basalt
Olivine-rich
basalt
(center)
Olivine-rich
basalt
(margin)
Basalt
clast
Plagioclase-
phyric
basalt
Plagioclase-
phyric
basalt
Depth (mbsf):
457.90
473.59
476.26
487.70
497.96
531.75
536.82
579.67
592.63
594.74
615.41
616.65
622.37
Major element oxide (wt%):









SiO2 48.4 48.2 47.7 48.0 43.4 48.2 45.7 47.2 44.2 47.6 49.6 49.8 48.3
TiO2 1.91 1.90 1.80 1.79 1.63 2.02 1.87 1.81 0.81 1.78 1.99 1.65 1.66
Al2O3 16.2 15.8 15.3 15.1 15.1 16.4 15.4 15.0 8.5 15.6 15.5 18.2 17.9
Fe2O3 10.8 11.2 12.2 10.9 10.2 11.6 11.9 13.5 13.0 11.6 10.3 9.78 9.59
MnO 0.15 0.15 0.17 0.16 0.15 0.13 0.17 0.18 0.19 0.13 0.19 0.14 0.13
MgO 5.92 5.30 5.96 6.89 10.8 7.30 9.67 5.70 25.1 7.69 5.51 6.06 6.40
CaO 11.7 11.8 12.1 11.3 1.59 9.25 8.14 11.6 5.94 10.6 11.8 12.2 11.8
Na2O 2.90 2.78 2.68 2.61 4.09 3.41 2.74 2.76 1.26 2.81 2.99 2.85 2.80
K2O 0.63 0.91 0.69 0.13 1.93 0.41 0.36 0.71 0.14 0.18 0.98 0.10 0.10
P2O5 0.20 0.22 0.19 0.21 0.17 0.21 0.20 0.18 0.07 0.16 0.21 0.17 0.18
Totals: 98.75 98.23 98.84 97.17 89.03 98.93 96.11 98.62 99.19 98.13 99.15 100.94 98.84
LOI 1.48 1.74 2.10 1.33 11.73 1.54 3.59 1.31 0.90 1.45 1.13 0.86 1.14
Mg# 0.55 0.51 0.52 0.58 0.70 0.58 0.64 0.48 0.81 0.59 0.54 0.58 0.59
Trace element (ppm):









Sr 258 250 244 247 860 269 214 239 121 238 253 281 277
Ba 40.6 38.9 33.6 31.1 55.1 59.9 54.8 31.5 21.8 35.5 63.5 28.4 28.7
Sc 39.4 38.6 37.0 38.1 33.4 34.3 33.8 40.5 20.3 40.6 43.8 39.5 39.4
V 270 301 301 299 251 298 278 315 146 313 358 294 302
Cr 262 263 259 329 244 251 261 243 814 260 268 298 276
Co 42.6 42.0 45.7 68.4 42.8 40.6 53.5 55.4 73.8 44.7 58.6 50.8 45.6
Ni 75.8 131 138 201 112 145 188 61.8 1224 82.1 114 82.8 86.3
Cu 150 91 122 128 58.7 80.4 47.6 91.9 61.5 145 77.8 130 119
Zn 105 189 84.0 138 69.7 90.9 107 118 114 94.6 107 76.9 107
Y 29.1 31.8 29.5 26.8 25.2 27.4 27.6 27.9 12.9 26.0 31.4 25.4 24.7
Zr 123 127 117 124 115 131 128 112 44.2 104 124 100 102

Notes: LOI = loss on ignition at 1025°C for 4 hr. Mg# = MgO/(MgO + FeO), in molar percent, with FeO calculated (as 90% of total Fe). In all figures all major element data are renormalized to 100% to correct for variable LOI. Only a portion of this table appears here. The entire table is available in ASCII.