Table T8. Whole-rock major and trace element abundances in basement rocks determined by ICP-AES, Hole 1206A. 
Core, section: Interval (cm):
Piece:
3R-2
94-96
8 		4R-3
72-74
4A 		7R-1
123-125
21 		8R-1
2-3
1 		8R-1
99-101
24 		8R-2
3-5
1 		15R-1
72-74
7A 		16R-4
80-82
8 		16R-5
66-67
8 		17R-2
74-76
6
Basement unit:
1
1
2c
4
4
4
5
6
6
6
Eruption unit*:
I
I
I
II
II
II
III
IV
IV
IV
Rock type:
Sparsely to
moderately
olivine-phyric
basalt
Sparsely to
moderately
olivine-phyric
basalt
Hyaloclastite
olivine-basalt
breccia
Sparsely to
highly
olivine-phyric
basalt
Sparsely to
highly
olivine-phyric
basalt
Sparsely to
highly
olivine-phyric
basalt
Moderately
olivine-
plagioclase-phyric
basalt
Moderately to
highly olivine-
phyric basalt
Moderately to
highly olivine-
phyric basalt
Moderately to
highly olivine-
phyric basalt
Depth (mbsf):
60.84
69.56
85.93
90.42
91.39
91.93
128.92
138.29
139.60
145.04
Major element oxide (wt%):







SiO2 48.43 50.15 47.10 49.90 47.18 46.44 48.94 47.11 46.38 47.25
TiO2 2.32 1.88 2.14 2.16 2.35 2.21 2.35 2.82 2.80 2.56
Al2O3 14.36 13.14 14.26 14.78 15.72 14.13 13.74 14.69 13.69 12.82
Fe2O3 13.25 13.64 12.20 11.42 13.60 14.20 12.96 12.15 12.83 13.67
MnO 0.14 0.17 0.23 0.10 0.09 0.11 0.17 0.15 0.12 0.16
MgO 7.47 10.61 7.83 8.08 7.10 7.99 7.84 7.56 8.11 9.60
CaO 8.99 8.06 10.05 8.53 7.19 6.53 10.53 10.65 8.48 9.28
Na2O 3.24 2.73 3.06 2.95 3.20 2.54 2.44 2.70 2.70 2.44
K2O 0.27 0.30 0.35 0.54 0.78 0.88 0.31 0.35 0.67 0.26
P2O5 0.30 0.21 0.35 0.19 0.20 0.15 0.25 0.35 0.37 0.29
Totals: 98.77 100.89 97.58 98.64 97.42 95.17 99.53 98.52 96.14 98.33
LOI 1.67 2.39 2.96 1.96 2.93 4.85 0.01 0.95 3.81 1.59
Mg# 0.55 0.63 0.59 0.61 0.53 0.55 0.57 0.58 0.58 0.61
Trace element (ppm):








Sr 287 237 364 274 255 158 331 376 378 356
Ba 86.7 76.9 73.5 56.1 59.6 44.6 88.3 47.4 57.5 71.2
Sc 28.2 25.1 28.1 29.6 33.6 32.8 31.7 32.1 30.4 28.4
V 342 287 318 301 304 289 295 335 342 291
Cr 300 435 411 401 419 388 355 330 526 583
Co 52.0 59.2 49.2 51.2 44.8 54.5 54.9 58.7 64.4 56.5
Ni 161 307 199 135 119 134 136 142 237 220
Cu 34.3 80.9 97.8 117 158 145 189 84.9 50.1 95.8
Zn 148 126 191 117 142 121 121 150 250 122
Y 32.6 27.1 37.4 24.5 25.1 21.7 28.9 30.7 29.6 25.9
Zr 168 142 155 128 136 128 152 150 250 173
 
Core, section: Interval (cm):
Piece:
18R-1
80-83
4		 19R-3
46-48
4B		 21R-5
66-68
9		 24R-3
10-12
2		 28R-1
100-102
17C		 31R-1
60-63
11		 32R-2
136-137
26		 38R-1
55-58
2B		 41R-1
22-24
5A		 42R-2
76-78
3
Basement unit:
6
7
8i
10
11
13
14
17
18b
21
Eruption unit*:
IV
V
V
VI
VI
VI
VII
VIII
IX
X
Rock type:
Moderately to
highly olivine-
phyric basalt
Aphyric to
moderately
olivine-phyric
basalt
Hyaloclastite olivine
basalt breccia and
moderately olivine-
phyric basalt
Aphyric to
sparsely olivine-
phyric basalt
Hyaloclastite basalt
breccia and aphyric
to sparsely olivine-
phyric basalt
Calcareous
lithic-vitric
sandstone
Hyaloclastite basalt
breccia and
sparsely olivine-
phyric basalt
Hyaloclastite basalt
breccia and
sparsely olivine-
phyric basalt
Aphyric
basalt
Sparsely
phyric
basalt
Depth (mbsf):
153.20
157.26
178.39
195.80
225.00
249.50
261.36
297.45
311.32
318.03
Major element oxide (wt%):





SiO2 45.25 48.91 47.28 50.07 48.32 49.01 46.64 46.28 48.37 49.06
TiO2 1.92 2.71 3.14 2.44 2.99 2.53 2.33 1.86 2.84 2.09
Al2O3 10.80 14.39 17.17 14.57 15.08 15.41 15.36 10.64 15.49 13.75
Fe2O3 10.87 13.19 10.31 14.16 10.51 10.59 10.65 12.15 11.97 12.82
MnO 0.17 0.18 0.23 0.18 0.31 0.12 0.26 0.16 0.17 0.16
MgO 14.76 7.54 7.32 6.64 6.63 7.40 8.09 17.27 6.26 7.33
CaO 8.63 10.91 6.80 10.38 9.10 8.35 10.28 7.25 9.69 9.84
Na2O 1.56 2.55 3.36 2.70 2.84 2.88 2.75 1.70 3.03 2.45
K2O 0.13 0.31 0.54 0.31 0.55 0.64 0.43 0.20 0.95 0.20
P2O5 0.21 0.26 0.39 0.24 0.40 0.25 0.33 0.17 0.39 0.21
Totals: 1.69 100.95 96.54 101.67 96.73 97.19 97.13 97.69 99.17 97.91
LOI 94.30 0.65 3.66 -0.24 3.35 1.98 2.41 3.23 -0.32 0.34
Mg# 0.53 0.56 0.61 0.51 0.58 0.61 0.63 0.76 0.53 0.56
Trace element (ppm):






Sr 204 363 395 311 351 327 331 198 357 294
Ba 35.3 90.3 48.0 51.8 44.4 80.5 44.7 93.0 102 069
Sc 27.5 34.2 35.3 29.4 32.8 35.3 31.0 25.0 30.2 27.0
V 241 337 380 332 342 324 296 244 314 263
Cr 768 303 335 260 238 304 308 743 235 277
Co 61.1 61.8 63.3 64.7 79.3 57.7 56.1 69.5 61.4 62.2
Ni 574 115 95.3 84.5 90.8 95.7 120 670 79.9 82.8
Cu 131 52.6 111 95.5 132 103 119 67.3 217 111
Zn 128 120 146 119 225 181 151 120 159 304
Y 19.2 27.8 32.5 27.5 34.3 22.2 28.0 23.4 36.0 29.8
Zr 128 163 206 145 225 181 151 120 159 304

Notes: * = See Table T3 for eruption unit information. 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 data are renormalized to 100% to correct for variable LOI. This table is also available in ASCII.