Table T8. Major and trace element concentrations in lavas determined by ICP-AES, Hole 1205A. 
Core, section:
Interval (cm):
Piece:
5R-2
31-33
7
5R-2
101-103
21
6R-2
13-15
1A
8R-1
59-61
4
12R-2
114-116
3A
13R-3
27-29
2A
16R-2
84-86
1J
19R-2
104-106
3B
20R-5
67-68
3
22R-1
28-30
6A
Unit/Subunit:
Conglomerate
Conglomerate
1
3b
3b
3b
5b
6
8a
9
Rock type:
Basalt cobble
boulder
conglomerate
Basalt cobble
boulder
conglomerate
Moderately
to highly
plagioclase-
phyric basalt
Sparsely to
moderately olivine
plagioclase-phyric
basalt
Sparsely to
moderately olivine-
plagioclase-phyric
basalt
Sparsely to
moderately olivine-
plagioclase-phyric basalt
Moderately
plagioclase-
olivine-phyric
basalt
Moderately
plagioclase-
olivine-phyric
basalt
Moderately
plagioclase-
olivine-phyric
basalt
Aphyric
basalt
Depth (mbsf):
34.19
34.89
43.93
57.49
73.88
78.79
97.08
112.34
125.8
133.18
Major element oxide (wt%):
SiO2 47.85 49.99 46.23 45.40 45.38 46.73 46.04 46.25 46.92 46.21
TiO2 2.76 3.02 2.55 2.87 2.82 2.94 2.35 2.29 2.58 2.52
Al2O3 17.46 19.13 16.65 15.99 15.83 16.00 16.31 17.66 15.42 15.68
Fe2O3 13.22 10.90 11.64 14.47 14.48 13.68 13.59 12.52 14.88 14.13
MnO 0.15 0.10 0.15 0.20 0.20 0.18 0.18 0.16 0.20 0.17
MgO 3.24 1.59 5.03 5.52 5.33 5.26 6.10 6.08 5.30 6.45
CaO 6.36 5.57 9.78 8.20 7.89 8.15 9.71 9.42 9.09 9.41
Na2O 4.45 4.63 3.42 3.83 3.77 3.59 3.24 3.25 3.72 3.09
K2O 1.99 2.78 1.08 1.16 1.39 1.14 0.71 0.93 1.25 0.78
P2O5 0.68 0.97 0.69 0.60 0.60 0.45 0.25 0.32 0.33 0.27
Totals: 98.15 98.69 97.22 98.23 97.70 98.12 98.48 98.88 99.69 98.71
LOI 1.87 2.60 2.71 0.97 1.41 2.31 1.31 2.10 1.59 2.34
Mg# 0.35 0.24 0.49 0.46 0.45 0.46 0.50 0.52 0.44 0.50
Trace element (ppm):
Sr 914 991 633 503 506 495 413 502 523 380
Ba 642 707 381 369 383 361 213 274 264 215
Sc 10.5 11.2 18.1 18.1 17.9 18.5 25.7 20.7 23.5 25.7
V 79.9 100 230 216 208 215 327 259 295 326
Cr ND ND 70.9 82.5 74.8 76.3 55.5 59.1 56.8 113
Co 45.8 58.6 58.6 54.4 52.5 50.1 54.6 60.7 66.4 59.6
Ni 4.8 5.4 65.5 42.4 36.9 41.0 46.8 44.4 26.6 52.4
Cu 26.0 17.1 55.7 41.0 33.0 32.9 63.2 46.4 53.7 99.7
Zn 107 108 119 127 130 134 169 98.5 78.7 72.1
Y 36.5 42.1 26.2 29.6 30.1 32.2 27.1 26.0 30.1 25.7
Zr 282 291 195 213 216 211 131 157 171 137
 
Core, section:
Interval (cm):
Piece:
23R-1
77-78
8
26R-2
23-25
1B
27R-5
103-105
5
28R-3
4-6
1A
29R-2
55-58
7A
30R-1
42-44
9
32R-2
114-116
2H
33R-3
11-13
1B
35R-1
32-34
1A
35R-4
77-79
1C
36R-5
50-51
2D
Unit/Subunit:
10
11b
12b
13b
14b
15b
16
17
18b
19b
20
Rock type:


Sparsely
plagioclase-
olivine-phyric to
aphyric basalt
Aphyric
basalt

Aphyric
basalt

Aphyric
basalt

Sparsely to
moderately
plagioclase-olivine-phyric basalt
Sparsely to
moderately
plagioclase-olivine-phyric basalt
Sparsely to
moderately
plagioclase-olivine-phyric basalt
Sparsely to
moderately
plagioclase-olivine-phyric basalt
Aphyric to
moderately olivine-phyric basalt
Moderately to
highly olivine-
phyric basalt
Sparsely to
moderately olivine-
phyric basalt
Depth (mbsf):
139.67
169.43
184.11
189.69
198.55
206.52
219.94
227.52
244.92
248.71
259.59
Major element oxide (wt%):
SiO2 46.45 46.85 46.53 46.60 46.36 44.69 46.70 47.44 48.67 46.31 45.91
TiO2 2.50 2.59 2.07 2.12 2.45 2.00 1.86 2.30 1.58 1.26 2.46
Al2O3 15.94 15.67 15.30 14.80 16.49 16.75 16.51 16.13 16.08 14.16 14.10
Fe2O3 12.79 13.66 13.60 14.60 13.93 13.99 12.80 13.97 12.48 12.50 14.37
MnO 0.17 0.20 0.17 0.19 0.23 0.23 0.17 0.18 0.16 0.15 0.19
MgO 6.64 6.80 6.98 6.72 5.09 6.41 6.67 5.98 7.44 11.02 8.44
CaO 8.58 9.40 9.46 9.48 8.91 7.56 9.58 9.25 10.65 8.30 8.64
Na2O 3.24 3.18 2.92 3.10 3.30 2.80 3.10 3.16 2.85 2.25 3.20
K2O 0.80 0.76 0.54 0.49 0.68 0.80 0.55 0.60 0.16 0.21 0.95
P2O5 0.27 0.31 0.18 0.18 0.33 0.19 0.17 0.26 0.10 0.07 0.36
Totals: 97.38 99.70 97.75 98.29 97.76 95.42 98.11 99.26 100.17 96.25 98.60
LOI 2.96 2.60 2.80 1.44 2.85 4.18 3.13 2.02 2.02 5.52 2.04
Mg# 0.53 0.52 0.53 0.50 0.45 0.50 0.53 0.48 0.57 0.66 0.56
Trace element (ppm):
Sr 368 405 329 290 335 256 606 391 332 227 555
Ba 226 235 145 138 182 151 145 202 068 061 289
Sc 24.6 25.4 25.0 27.6 23.4 27.3 22.4 23.6 27.3 24.6 24.1
V 319 350 315 349 325 279 277 328 265 232 277
Cr 73.6 138 184 65.3 68.0 176 163 123 291 627 253
Co 58.5 53.9 62.7 64.3 57.6 55.7 53.9 59.6 53.2 68.9 64.1
Ni 39.8 73.3 93.2 41.4 31.5 92.7 87.5 67.8 105.2 413.1 243.7
Cu 63.3 57.5 67.2 77.0 44.0 40.3 58.1 60.2 69.5 58.4 63.4
Zn 101 81.6 86.9 73.7 81.3 114 50.5 130 35.0 87.0 82.9
Y 28.3 26.4 22.1 27.0 27.9 25.0 21.4 25.5 20.5 19.2 26.3
Zr 144 136 110 105 133 105 97.6 132 78.9 58.1 156
 
Core, section: Interval (cm):
Piece:
37R-5
28-29
2C
39R-1
69-70
3F
41R-3
59-61
1B
41R-5
24-26
1A
43R-2
58-60
2A
44R-1
87-88
5A
44R-2
110-112
9
45R-1
126-128
5I
Unit:
21
22
24a
26a
27
28a
29a
30b
Rock type:


Moderately
to highly
plagioclase-olivine-
phyric basalt
Moderately
olivine-plagioclase-
phyric basalt
Aphyric
basalt

Aphyric to sparsely
plagioclase-phyric
basalt
Aphyric to
moderately
plagioclase-phyric
basalt
Moderately olivine-
plagioclase-phyric
basalt
Olivine basalt
breccia

Aphyric to
moderately olivine-
plagioclase-phyric
basalt
Depth (mbsf):
269.92
275.29
285.43
287.82
303.88
313.07
314.3
322.76
Major element oxide (wt%):
SiO2 46.16 46.53 47.35 46.58 48.77 46.54 44.82 46.37
TiO2 2.66 2.55 2.74 2.61 2.64 3.12 3.13 3.05
Al2O3 15.04 14.97 15.77 15.68 15.84 16.43 16.47 16.18
Fe2O3 14.32 14.30 13.25 14.39 13.59 14.45 15.17 14.53
MnO 0.18 0.17 0.16 0.21 0.19 0.27 0.24 0.19
MgO 7.34 8.17 5.42 6.30 5.81 4.84 5.44 5.09
CaO 8.74 9.01 9.31 8.39 8.99 8.29 7.38 8.15
Na2O 3.12 3.08 3.31 3.08 3.46 3.36 3.16 3.36
K2O 0.90 0.81 0.72 0.61 0.73 0.87 0.88 0.82
P2O5 0.43 0.44 0.44 0.34 0.35 0.43 0.39 0.42
Totals: 98.89 100.03 98.46 98.18 100.38 98.60 97.08 98.15
LOI 1.38 0.46 3.23 2.89 1.81 2.51 4.06 2.53
Mg# 0.53 0.56 0.47 0.49 0.48 0.42 0.44 0.44
Trace element (ppm):
Sr 578 788 366 334 358 375 344 390
Ba 304 316 235 200 207 243 239 246
Sc 21.6 23.8 26.1 25.2 24.8 25.0 24.8 24.0
V 288 290 330 322 322 324 332 315
Cr 226 221 98.0 75.3 81.2 66.5 72.6 66.5
Co 70.2 79.6 59.4 66.5 68.2 61.8 71.0 63.7
Ni 145.5 189.7 74.6 66.8 69.8 54.7 48.0 54.5
Cu 54.6 77.7 45.1 26.9 49.6 50.1 36.8 43.9
Zn 140 141 144 147 148 173 161 163
Y 25.4 27.4 33.1 30.5 31.0 35.8 34.6 35.8
Zr 183 179 180 159 150 193 190 204

Notes: LOI = loss on ignition at 1025C 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% in order to correct for variable LOI. ND = not detected. This table is also available in ASCII.