Leg, hole:
|
176-735B- | 118-735B- |
176-735B-
|
118-735B- | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Core, section: Interval (cm):
|
190R-6
42-48 |
190R-6
42-48 |
190R-6
42-48 |
23R-5
47-52 |
18R-4
139-147 |
162R-6
29-36 |
35R-6
95-102 |
28R-2
76-83 |
20R-2
13-21 |
38R-1
61-80 |
52R-4
69-71 |
53R-4
68-78 |
19R-5
62-73 |
2D-1
145-148 |
2D-1
145-148 |
Rock type: | Gabbro | Oxide gabbro | Gabbronorite | ||||||||||||
Major element oxide (wt%): | |||||||||||||||
SiO2 | 52.18 | 52.07 | 51.05 | 51.10 | 52.91 | 51.98 | 51.45 | 50.86 | 50.82 | 50.99 | 49.65 | 51.45 | 51.22 | 51.34 | 50.37 |
TiO2 | 0.62 | 0.52 | 0.81 | 0.49 | 0.45 | 0.64 | 0.64 | 0.67 | 1.02 | 0.62 | 0.69 | 0.15 | 0.43 | 0.50 | 0.57 |
Al2O3 | 1.82 | 2.21 | 2.54 | 2.84 | 3.29 | 2.72 | 3.70 | 3.64 | 2.72 | 1.88 | 1.78 | 0.53 | 2.41 | 1.95 | 2.34 |
FeO | 12.21 | 9.17 | 7.90 | 7.36 | 10.41 | 7.31 | 5.94 | 5.94 | 9.04 | 13.44 | 13.47 | 14.98 | 11.21 | 11.31 | 11.41 |
Cr2O3 | 0.04 | 0.14 | 0.08 | 0.08 | 0.20 | 0.11 | 0.20 | 0.17 | 0.18 | 0.00 | 0.00 | 0.02 | 0.15 | 0.00 | 0.00 |
MnO | 0.33 | 0.26 | 0.21 | 0.28 | 0.19 | 0.12 | 0.16 | 0.16 | 0.28 | 0.43 | 0.49 | 0.48 | 0.34 | 0.41 | 0.37 |
MgO | 21.36 | 17.99 | 16.07 | 14.08 | 22.24 | 18.06 | 16.67 | 15.27 | 13.81 | 12.93 | 11.66 | 11.25 | 13.49 | 13.01 | 12.55 |
CaO | 11.60 | 17.20 | 20.58 | 21.43 | 9.27 | 19.14 | 19.81 | 21.10 | 19.79 | 18.37 | 20.31 | 21.43 | 19.51 | 20.33 | 20.95 |
Na2O | 0.36 | 0.30 | 0.41 | 0.45 | 0.43 | 0.44 | 0.59 | 0.43 | 0.58 | 0.40 | 0.43 | 0.34 | 0.52 | 0.39 | 0.47 |
Total | 100.52 | 99.85 | 99.65 | 98.11 | 99.39 | 100.52 | 99.16 | 98.24 | 98.24 | 99.07 | 98.48 | 100.63 | 99.28 | 99.24 | 99.03 |
Number of cations based on 6 O: | |||||||||||||||
Si | 1.9128 | 1.9236 | 1.9012 | 1.9304 | 1.9250 | 1.9027 | 1.9009 | 1.9043 | 1.9256 | 1.9463 | 1.9254 | 1.9653 | 1.9365 | 1.9467 | 1.9225 |
Ti | 0.0170 | 0.0144 | 0.0228 | 0.0139 | 0.0123 | 0.0175 | 0.0170 | 0.0189 | 0.0291 | 0.0177 | 0.0201 | 0.0043 | 0.0122 | 0.0143 | 0.0164 |
AlIV | 0.0786 | 0.0764 | 0.0988 | 0.0696 | 0.0750 | 0.0973 | 0.0991 | 0.0957 | 0.0744 | 0.0537 | 0.0746 | 0.0239 | 0.0635 | 0.0533 | 0.0775 |
AlVI | 0.0000 | 0.0197 | 0.0128 | 0.0568 | 0.0660 | 0.0201 | 0.0621 | 0.0649 | 0.0471 | 0.0310 | 0.0067 | 0.0000 | 0.0438 | 0.0338 | 0.0278 |
Fe+2 | 0.3744 | 0.2831 | 0.2462 | 0.2325 | 0.3166 | 0.2237 | 0.1836 | 0.1859 | 0.2866 | 0.4291 | 0.4368 | 0.4785 | 0.3543 | 0.3586 | 0.3642 |
Cr | 0.0013 | 0.0040 | 0.0024 | 0.0024 | 0.0058 | 0.0031 | 0.0058 | 0.0050 | 0.0054 | 0.0000 | 0.0000 | 0.0006 | 0.0045 | 0.0000 | 0.0000 |
Mn | 0.0103 | 0.0083 | 0.0066 | 0.0090 | 0.0059 | 0.0037 | 0.0050 | 0.0051 | 0.0090 | 0.0140 | 0.0161 | 0.0155 | 0.0109 | 0.0132 | 0.0120 |
Mg | 1.1673 | 0.9910 | 0.8922 | 0.7930 | 1.2063 | 0.9855 | 0.9182 | 0.8523 | 0.7801 | 0.7357 | 0.6741 | 0.6406 | 0.7603 | 0.7354 | 0.7141 |
Ca | 0.4557 | 0.6808 | 0.8212 | 0.8673 | 0.3613 | 0.7506 | 0.7841 | 0.8464 | 0.8034 | 0.7513 | 0.8438 | 0.8770 | 0.7902 | 0.8259 | 0.8567 |
Na | 0.0710 | 0.0598 | 0.0809 | 0.0924 | 0.0846 | 0.0844 | 0.1154 | 0.0855 | 0.1190 | 0.0846 | 0.0903 | 0.0730 | 0.1075 | 0.0817 | 0.0968 |
Total | 4.0884 | 4.0610 | 4.0850 | 4.0673 | 4.0588 | 4.0886 | 4.0912 | 4.0639 | 4.0796 | 4.0634 | 4.0879 | 4.0786 | 4.0838 | 4.0628 | 4.0879 |
En | 58.5 | 50.7 | 45.5 | 41.9 | 64.0 | 50.3 | 48.7 | 45.2 | 41.7 | 38.4 | 34.5 | 32.1 | 39.9 | 38.3 | 36.9 |
Fe | 18.7 | 14.5 | 12.6 | 12.3 | 16.8 | 11.4 | 9.7 | 9.9 | 15.3 | 22.4 | 22.3 | 24.0 | 18.6 | 18.7 | 18.8 |
Wo | 22.8 | 34.8 | 41.9 | 45.8 | 19.2 | 38.3 | 41.6 | 44.9 | 43.0 | 39.2 | 43.2 | 43.9 | 41.5 | 43.0 | 44.3 |