Table T17. Major and trace element compositions of veins, Hole 735B. (Continued on next page.)
 
Core, section,
interval (cm):
120R-2,
99-104
121R-1,
83-87
123R-6,
140-146
123R-8,
27-32
90R-3,
38-44
90R-4,
55-58
90R-4,
84-86
124R-1,
111-115
135R-3,
68-72
130R-3,
52-58
138R-4,
59-63
126R-5,
102-106
150R-7,
93-100
153R-1,
35-39
157R-7,
1-5
161R-7,
78-84
202R-7,
96-101
Vein type:
Plag + Diop
Plag + Diop
Plag + Diop
Plag + Amph
Felsic
Felsic
Felsic
Felsic
Felsic
Felsic
Felsic
Felsic
Felsic
Felsic
Felsic
Felsic
Felsic
Major element oxides (wt%):
SiO2 53.36 62.91 59.16 64.91 74.17 70.56 60.49 72.75 64.05 69.43 70.12 61.54 66.18 59.70 66.11 62.69 61.22
TiO2 0.06 0.27 0.26 0.31 0.12 0.15 0.19 0.23 0.15 0.27 0.10 0.17 0.47 0.25 0.31 0.08 0.14
Al2O3 8.49 17.44 13.27 18.82 12.86 14.31 18.60 14.79 20.36 16.18 17.32 22.10 17.31 19.72 17.12 20.69 18.57
Fe2O3 8.96 2.18 4.67 0.44 0.59 1.61 2.62 0.74 0.97 1.90 0.60 0.67 1.48 3.47 1.92 0.56 2.60
MnO 0.14 0.03 0.06 0.00 0.02 0.04 0.05 0.01 0.01 0.08 0.00 0.01 0.04 0.06 0.03 0.01 0.04
MgO 10.29 2.84 5.42 0.73 2.86 2.81 3.41 1.25 0.67 1.34 0.43 0.90 1.19 1.44 1.39 0.60 1.95
CaO 12.38 3.73 8.26 0.98 1.95 2.09 4.53 1.22 4.43 3.10 2.56 4.75 4.43 5.41 3.86 4.36 4.59
Na2O 3.11 8.79 6.31 10.11 5.55 6.69 7.53 7.31 7.29 6.29 7.24 8.19 7.12 7.38 6.33 7.41 7.83
K2O 0.03 0.01 0.01 0.02 0.02 0.02 0.04 0.08 0.40 0.22 0.36 0.24 0.28 0.32 0.43 0.23 0.17
P2O5 0.04 0.04 0.04 0.04 0.05 0.08 0.07 0.08 0.17 0.08 0.07 0.05 0.11 0.06 0.22 0.05 0.05
H2O 2.35 1.20 1.23 1.02 0.59 1.07 1.08 0.59 0.49 0.62 0.44 0.53 0.75 0.87 1.12 0.93 1.21
CO2 1.16 0.44 0.99 2.43 0.62 0.44 1.29 0.51 0.63 0.44 0.73 0.55 0.29 0.98 0.99 2.60 1.60
Total: 100.37 99.88 99.69 99.82 99.40 99.87 99.89 99.58 99.63 99.87 99.99 99.68 99.65 99.65 99.82 100.21 99.97
Trace elements determined by XRF (ppm):
Ba 33 33 36 50 36 44 23 70 49 34 78 30 36 25 <30 25 37
Cr 28 11 <10 <10 <10 <10 221 11 <10 <10 <10 <10 <10 <10 <10 110 18
Nb <10 13 <10 12 <10 12 <10 11 <10 <10 11 <10 14 <10 <10 <10 <10
Ni 67 29 47 <10 25 87 86 <10 <10 <10 <10 17 10 14 <10 <10 22
Rb <10 <10 <10 <10 <10 <10 <10 <10 <10 <10 <10 <10 <10 <10 <10 <10 <10
Sr 50 106 80 51 87 90 131 35 142 86 92 194 106 171 113 187 155
V 174 51 77 <10 <10 13 <10 <10 <10 11 <10 16 13 25 <10 <10 21
Y 31 53 86 165 28 136 61 109 84 89 37 40 44 32 63 33 19
Zn 25 29 12 <10 36 30 21 <10 358 23 10 <10 22 28 33 148 26
Zr 100 224 37 88 126 602 218 232 215 289 182 33 679 189 1720 75 76
Trace elements determined by ICP-MS (ppm):
Li 4.4 1 0.6 0.06 1.6 2.8 0.7 0.3 1.2 1.2 1.8 0.9 0.8 1.4 5.3 0.5 0.3
Co 31 6.6 19 0.9 2.7 9.2 13 1.1 3 5.3 1.6 2.2 3.8 8.8 5.4 1.6 6.3
Ni 58 19 39 2.4 24 79 71 3.6 7.2 7.4 3.4 5.9 5.3 9.8 9 3.5 13
Sc 20 1.8 3.8 0.26 0.48 4.1 7.1 1 3.4 5.4 1.4 2.8 2.2 3.1
2.3 0.79
Cu 2.7 3.7 5.2 5.1 10 3.8 5.6 3.9 5 5.5 4.6 4.5 9.1 4.3 5.8 3.2 7
Zn 38 17 18 9.3 33 27 24 9.2 17 17 13 12 18 30 32 12 28
Ga 15 29 23 35 18 24 26 27 33 25 26 35 27 33 27 34 28
Rb 0.3 0.3 0.2 0.1 0.4 0.3 0.2 0.2 1.4 0.6 1.4 0.8 0.5 1.2 4 0.3 0.3
Sr 55 105 86 56 90 92 131 40 145 88 89 197 104 174 111 184 156
Zr 24 17 10 9 6 11 5 37 6 11 5 5 10 4 30 3 6
Y 31 47 81 153 27 114 51 96 78 82 33 37 39 29
29 16
Nb 0.2 6.3 5.2 12 5.6 7.3 4.9 11 3.1 7.6 2.4 2.6 12 2.9 5.6 1 2.1
Mo 0.5 0.1 0.1 0.08 0.2 0.05 2.2 0.7 0.2 0.5 0.3 0.1 0.3 0.2 0.5 0.04 0.1
Cd 0 0.02 0.01 0.02 0.03 0.05 0.05 0.02 0.02 0.01 0.01 0.01 0.06 0.03 0.03 0.04 0.02
Sn 0.8 1.1 1.8 2.9 0.6 0.8 2 5 2.6 3 1.9 1.5 3.6 2.8 4.6 1 3.6
Ta 0.04 1.3 0.52 1.5 0.9 1 0.6 1.1 0.29 0.78 0.28 0.18 1 0.38 0.71 0.12 0.24
Rare earth elements determined by ICP-MS (ppm):
La 4.4 47 11 17 18 7.5 19 69 18 17 19 12 15 10
19 42
Ce 13 116 43 60 42 22 47 193 48 44 43 33 36 25
44 100
Pr 1.9 13 7.4 10 4.9 2.6 5.8 22 7 6.1 5.3 4.4 4.4 3.1
5.5 11
Nd 8 48 35 49 17 14 24 82 31 30 23 19 21 14
22 43
Sm 2.2 8.3 9.7 13 3.1 5.3 5.8 15 8.6 7.4 4.3 4.9 4.5 3.1
4.3 6.4
Eu 0.63 1.2 1.3 1.2 0.38 1 1.3 1.5 3.6 2 2 3.7 2.2 2.8
4 1.8
Gd 3.1 7.8 11 15 3 9.3 6.3 14 11 9.4 4.6 5.7 4.8 3.4
4.5 4.4
Tb 0.57 1.2 2.1 3.1 0.51 2 1.2 2.3 2.1 1.9 0.82 0.94 1 0.58
0.79 0.52
Dy 3.9 6.8 13 21 3.6 15 7.9 14 13 12 5.1 6 5.6 4.1
5 2.9
Ho 0.99 1.6 2.9 4.9 0.86 4.1 1.9 3.2 2.9 2.9 1.1 1.4 1.5 1
1.1 0.61
Er 3.4 4.9 9.2 17 3.1 12 6.2 11 9.2 9.2 3.7 4 4.5 3.3
3.6 1.8
Tm 0.69 0.81 1.5 2.6 0.5 2.1 0.96 1.8 1.3 1.4 0.59 0.65 0.72 0.53
0.52 0.28
Yb 6 5.9 11 18 4.1 15 6.6 14 8.3 9.9 4.3 4.2 5.9 4
3.6 2.1
Lu 1.4 0.94 1.8 2.7 0.69 2.3 1.1 2.3 1.3 1.6 0.67 0.6 1.1 0.69
0.54 0.37

Note: XRF = X-ray diffraction, ICP-MS = inductively coupled plasma-mass spectroscopy.