Table T4. Major and trace element concentrations determined by inductively coupled plasma-atomic emission spectroscopy, Hole 1243B.
203-1243B-
Core, section:
2R-1
3R-1
5R-2
6R-2
7R-2
9R-2
11R-1
15R-1
18R-1
Interval (cm):
23-25
116-118
16-17
102-104
54-57
135-138
58-60
84-87
24-26
Piece:
5
15
3
14
4A
6C
10
9
4
Unit:
1
3
3
3
4
4
5
7
8
Depth (mbsf):
108.83
114.36
124.33
130.1
139.31
149.85
157.08
176.74
190.44
Major element oxide (wt%):





SiO2 49.99 50.67 50.17 51.16 50.31 49.49 51.64 49.77 49.42
TiO2 1.69 1.67 1.68 1.72 2.12 2.12 1.98 1.93 1.43
Al2O3 15.13 15.45 15.30 15.40 16.92 16.77 15.25 14.34 15.33
Fe2O3t* 9.73 10.22 10.11 8.88 9.25 9.45 9.62 13.65 12.17
MnO 0.18 0.17 0.18 0.16 0.15 0.15 0.17 0.17 0.17
MgO 7.25 6.43 6.51 7.29 5.92 5.74 6.11 5.89 6.55
CaO 12.56 12.11 12.51 12.02 10.66 11.74 11.66 10.89 12.18
Na2O 3.04 2.94 3.01 3.08 3.57 3.42 3.04 2.93 2.48
K2O 0.30 0.14 0.39 0.10 0.78 0.75 0.32 0.25 0.15
P2O5 0.12 0.19 0.15 0.18 0.32 0.36 0.21 0.18 0.11
Totals: 100 100 100 100 100 100 100 100 100
LOI 0.10 0.40 0.80 0.20 1.41 2.69 0.90 0.70 0.80
Mg# 63.5 59.4 60.0 65.7 59.9 58.6 59.7 50.2 55.6
Trace element (ppm):





Ba 22 16 20 18 100 104 21 15 14
Cr 322 298 306 291 180 175 283 138 281
Sc 46 45 47 45 31 31 44 50 50
Sr 165 162 164 162 293 302 142 127 116
V 344 344 353 330 267 281 373 434 353
Y 37 35 37 40 38 37 46 46 36
Zr 135 130 125 133 205 204 147 139 94
Zn 67 62 61 68 61 98 106 103 80
Co 41 44 42 40 42 41 42 55 48
Cu 99 94 96 97 120 118 111 116 82
Nb 15 15 14 15 18 18 17 18 13
Ni 109 83 81 79 79 65 132 45 76

Notes: * = total iron as Fe2O3. LOI = Loss on ignition. Mg# = Mg/(Mg + Fe2+) x 100; Fe2+ estimated as 85% of total ions. This table is also available in ASCII.