Table T7. Whole-rock major and trace element abundances in basalts determined by ICP-AES, Site 1204.
Hole:
1204A 1204B
Core, section: Interval (cm):
Piece:
7R-3
36-37
3 		9R-1
96-97
12B 		9R-2
50-51
5 		10R-2
77-79
5 		10R-3
54-56
2 		2R-2
48-50
1B 		2R-4
87-89
2B 		4R-3
29-31
5 		6R-4
21-24
4 		7R-2
66-69
10 		7R-3
42-44
5A 		7R-3
140-142
17 		8R-3
53-55
8 		9R-2
22-24
1B
Unit/Subunit:
2
2
2
2
2
1
1
2a
2a
2a
2a
2b
2b
2b
Rock type:
Aphyric
basalt
(lobed)
Aphyric
basalt
(lobed)
Aphyric
basalt
(lobed)
Aphyric
basalt
(lobed)
Aphyric
basalt
(lobed)
Aphyric
basalt
(lobed)
Aphyric
basalt
(lobed)
Aphyric
basalt
(lobed)
Aphyric
basalt
(lobed)
Aphyric
basalt
(lobed)
Aphyric
basalt
(lobed)
Diabase
(massive)
Diabase
(massive)
Diabase
(massive)
Depth (mbsf):
822.68
839.56
840.60
850.54
851.45
822.08
824.67
842.89
863.24
870.33
871.6
872.57
881.29
887.51
Major element oxide (wt%):











SiO2 38.39 43.76 43.76 45.62 45.37 43.60 45.44 43.57 39.86 41.38 44.34 43.67 45.98 45.64
TiO2 2.03 2.15 1.98 2.31 2.12 2.30 2.54 2.37 2.26 2.25 2.32 2.26 1.95 2.17
Al2O3 13.63 14.89 14.75 14.69 15.36 16.33 17.44 16.89 13.81 14.43 14.90 14.65 15.16 15.23
Fe2O3 10.51 16.07 12.74 14.46 13.84 12.52 15.44 15.02 11.43 12.15 12.30 11.20 14.07 13.77
MnO 0.14 0.20 0.18 0.18 0.14 0.14 0.19 0.23 0.12 0.16 0.20 0.18 0.17 0.15
MgO 3.21 4.62 4.97 6.80 9.31 2.31 2.19 2.10 2.91 3.43 4.98 4.49 7.07 8.55
CaO 19.41 11.69 12.81 10.03 7.43 12.86 9.72 9.58 16.70 15.04 13.34 15.46 9.00 9.08
Na2O 2.82 3.07 2.96 3.05 3.16 3.32 3.47 2.83 2.95 3.14 2.98 2.95 2.62 3.15
K2O 0.95 0.84 1.02 0.96 0.41 1.43 1.20 1.57 0.86 1.05 1.30 1.04 1.24 0.38
P2O5 0.36 0.30 0.24 0.29 0.25 0.28 0.74 1.92 0.37 0.42 0.30 0.26 0.21 0.24
Totals: 91.43 97.60 95.41 98.40 97.39 95.10 98.37 96.08 91.27 93.45 96.96 96.15 97.46 98.34
LOI 9.48 3.63 4.98 3.15 3.62 3.75 1.93 4.17 7.81 5.56 4.25 5.69 3.20 3.19
Mg# 0.40 0.39 0.46 0.51 0.60 0.29 0.24 0.24 0.36 0.38 0.47 0.47 0.52 0.58
Trace element (ppm):











Sr 243 244 227 203 198 275 300 333 242 243 248 237 191 200
Ba 68.9 82.9 70.8 81.2 61.9 83.4 118 130 73.5 80.7 86.7 77.6 64.2 58.2
Sc 38.6 40.3 40.9 43.8 34.8 39.0 47.4 41.7 43.2 41.9 46.0 42.3 39.4 40.9
V 342 366 335 362 323 347 440 317 359 370 357 362 341 329
Cr 179 158 171 165 158 147 166 156 173 148 166 168 171 175
Co 59.7 42.7 50.0 46.1 53.9 46.0 55.4 65.2 40.2 45.1 59.7 57.7 43.7 50.6
Ni 39.8 64.1 51.5 65.9 79.6 40.8 57.7 55.4 10.1 36.7 81.4 77.8 124 90.5
Cu 78.1 90.3 85.3 96.4 94.7 119 107 120 88.0 90.9 97.5 95.8 94.1 98.4
Zn 93.4 108 108 102 110 115 143 144 123 123 155 132 169 108
Y 35.5 45.5 33.3 39.0 35.1 40.0 42.9 50.7 38.5 42.9 40.9 35.5 28.8 34.6
Zr 145 159 134 165 148 161 171 168 160 164 156 143 120 145
 
Hole:
1204B
Core, section: Interval (cm):
Piece:
10R-3
25-27
2A		 13R-2
10-12
1		 13R-3
32-34
1A		 14R-2
115-117
5		 14R-3
68-70
14		 15R-1
131-133
9		 17R-1
89-90
13
Unit/Subunit:
2b
2b
2b
2c
2c
2c
3
Rock type:
Diabase
(massive)
Diabase
(massive)
Diabase
(massive)
Aphyric
basalt
(lobed)
Aphyric
basalt
(lobed)
Aphyric
basalt
(lobed)
Aphyric
basalt
(lobed)
Depth (mbsf):
891.80
909.87
911.48
918.17
919.20
926.91
945.79
Major element oxide (wt%):




SiO2 43.43 44.97 46.47 44.75 45.48 45.20 46.06
TiO2 2.14 2.23 2.28 2.26 2.06 2.17 2.52
Al2O3 15.41 14.62 14.29 15.73 15.70 15.33 14.01
Fe2O3 13.31 13.79 13.93 12.98 12.21 13.60 14.23
MnO 0.20 0.18 0.17 0.13 0.11 0.19 0.17
MgO 7.28 5.05 8.36 4.23 5.22 5.99 5.12
CaO 10.42 10.83 7.01 10.07 10.42 9.29 10.49
Na2O 3.02 2.85 3.15 3.13 3.03 2.90 2.88
K2O 0.81 1.10 0.55 1.27 1.12 1.08 1.14
P2O5 0.26 0.29 0.26 0.78 0.37 0.33 0.34
Totals: 96.29 95.92 96.49 95.33 95.73 96.06 96.95
LOI 3.24 4.48 3.71 4.16 4.69 3.98 2.84
Mg# 0.55 0.45 0.57 0.42 0.48 0.49 0.44
Trace element (ppm):




Sr 203 214 180 264 237 212 219
Ba 79.0 74.8 66.1 90.0 62.1 79.3 79.6
Sc 40.5 41.9 40.9 41.1 38.2 40.5 46.3
V 328 335 339 317 280 333 355
Cr 174 151 152 148 149 169 154
Co 60.0 46.6 47.1 48.6 41.4 57.6 70.7
Ni 97.1 56.9 48.3 48.2 46.4 138 64.1
Cu 110 94.8 97.4 88.0 82.6 90.5 99.7
Zn 111 120 90.5 165 187 178 233
Y 34.3 39.2 33.4 39.8 32.7 35.3 43.7
Zr 152 153 158 156 142 146 177

Notes: LOI = loss on ignition at 1025°C for 4 hrs. Mg# = MgO/(MgO + FeO), in molar percent, with FeO calculated (as 90% of total Fe). In all figures these data are renormalized to 100% to correct for variable LOI. This table is also available in ASCII.