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Table T15. Major oxide and trace element analyses of gabbros from Hole 1105A. (Continued on next three pages.)

Leg:
Site:
Hole:
Core:
Type:
Section:
Lithology:


Top (cm):
Bottom (cm):
Piece:
Depth (mbsf):

 179
1105
A
1
R
2
Olivine gabbro

88

91
2B

16.96

179
1105
A
1
R
4
Gabbro


141

144
8

20.31

179
1105
A
2
R
1
Gabbro


79

82
6

24.49

179
1105
A
3
R
1
Olivine
gabbro

51

54
3

29.21

179
1105
A
4
R
3
Olivine
gabbro

46

60
3

36.28

179
1105
A
4
R
4
Oxide
gabbro

57

62
7

37.79

179
1105
A
5
R
1
Oxide olivine gabbro
115

118
7

39.45

179
1105
A
5
R
2
Gabbro


55

58
6

40.33

179
1105
A
6
R
2
Olivine gabbro

32

36
2

44.58

179
1105
A
7
R
3
Oxide gabbro

31

36
2

50.94

179
1105
A
7
R
4
Olivine gabbro

30

33
7

52.12

179
1105
A
8
R
3
Gabbro


47

50
4

55.69

179
1105
A
9
R
1
Gabbro


82

86
7

58.22

179
1105
A
9
R
4
Olivine gabbro

12

16
1

61.81
Major oxides (wt%):













SiO2
 50.45
 52.50
 49.90
 51.43
 50.28
 39.70
 41.05
 51.47
 51.22
 42.45
 53.79
 51.88
 51.65
 50.41
TiO2
 0.30
 0.32
 0.29
 0.36
 0.36
 3.94
 4.36
 0.57
 0.60
 6.22
 0.44
 0.49
 1.57
 1.34
Al2O3
 18.14
 20.64
 17.37
 16.38
 15.40
 11.50
 11.21
 17.17
 16.42
 9.95
 16.73
 15.39
 13.96
 13.69
Fe2O3
 5.00
 3.34
 5.96
 7.10
 6.28
 21.16
 24.36
 6.82
 7.89
 24.05
 7.54
 6.70
 12.30
 13.40
MnO
 0.09
 0.08
 0.09
 0.13
 0.12
 0.31
 0.32
 0.13
 0.14
 0.34
 0.14
 0.14
 0.23
 0.25
MgO
 9.35
 5.47
 10.76
 9.00
 11.87
 3.54
 3.85
 7.84
 8.70
 5.92
 7.13
 9.50
 6.02
 7.35
CaO
 14.22
 13.98
 13.32
 12.02
 14.05
 11.93
 9.64
 12.91
 12.44
 9.48
 10.90
 13.85
 10.81
 10.55
Na2O
 2.49
 3.50
 2.33
 3.27
 2.18
 3.27
 3.39
 3.09
 2.98
 2.72
 4.03
 2.83
 3.87
 3.36
K2O
 0.06
 0.06
 0.07
 0.06
 0.04
 0.10
 0.13
 0.06
 0.07
 0.10
 0.17
 0.06
 0.10
 0.10
P2O5
 0.01
 0.02
 0.02
 0.02
 0.01
 4.06
 2.09
 0.03
 0.03
 0.28
 0.02
 0.06
 0.09
 0.12
Total
 100.09
 99.89
 100.10
 99.76
 100.58
 99.49
 100.38
 100.07
 100.48
 101.49
 100.87
 100.87
 100.59
 100.54
LOI:
 1.39
 1.20
 3.36
 1.56
 1.86
 2.45
 0.06
 1.43
 1.19
 -0.13
 0.06
 0.37
 0.00
 -2.55















Trace elements (ppm):













Nb
 2
 1
 1
 1
 1
 10
 8
 2
 1
 5
 1
 1
 3
 3
Zr
 31
 24
 21
 19
 19
 73
 88
 29
 38
 106
 31
 41
 44
 72
Y
 13
 7
 7
 7
 9
 192
 123
 12
 14
 44
 15
 12
 30
 32
Sr
 174
 202
 135
 152
 135
 155
 140
 166
 168
 106
 183
 147
 178
 163
Rb
 0
 0
 0
 0
 0
 1
 1
 0
 0
 1
 2
 0
 1
 0
Zn
 44
 23
 40
 33
 39
 171
 192
 44
 53
 160
 45
 41
 91
 96
Cu
 64
 27
 33
 32
 99
 62
 84
 64
 55
 106
 30
 62
 39
 50
Ni
 89
 55
 221
 162
 220
 18
 18
 89
 88
 40
 44
 84
 28
 38
Cr
 54
 202
 876
 760
 1066
 0
 0
 100
 75
 0
 2
 143
 0
 41
V
 167
 146
 142
 142
 172
 169
 197
 181
 167
 864
 184
 207
 318
 182
Ce
 39
 50
 41
 44
 36
 40
 0
 35
 36
 0
 28
 35
 0
 3
Ba
 116
 165
 136
 144
 135
 0
 0
 106
 97
 0
 99
 122
 0
 0















Mg# *
 0.81
 0.79
 0.81
 0.75
 0.81
 0.28
 0.27
 0.73
 0.72
 0.36
 0.69
 0.77
 0.53
 0.56
Mg# **
 0.79
 0.76
 0.78
 0.72
 0.79
 0.25
 0.24
 0.70
 0.69
 0.33
 0.65
 0.74
 0.49
 0.52

Notes: * = Fe calculated as 0.85 total iron. ** = Fe calculated as total iron. LOI = loss on ignition. This table is also available in ASCII format in the TABLES directory.

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