Table T8 (continued).
Leg, hole:
176-735B- 118-735B-
Core, section: Interval (cm):
118R-4
50-55
118R-4
50-55
35R-3
57-61
35R-6
95-102
56R-3
60-65
53R-4
68-78
2D-1
145-148
3D-1
7-11
19R-5
62-73
19R-5
62-73
19R-5
62-73
2D-1
123-127
2D-1
123-127
2D-1
123-127
74R-6
27-35
Rock type: Oxide gabbro Gabbronorite Oxide gabbronorite
Major element oxide (wt%):                          
SiO2 60.86 62.38 63.35 62.88 62.70 64.13 54.60 55.73 59.59 61.18 62.32 56.16 56.40 56.57 57.40
TiO2 0.06 0.00 0.05 0.00 0.00 0.00 0.00 0.00 0.00 0.04 0.00 0.00 0.00 0.00 0.00
Al2O3 23.86 23.47 23.38 22.74 23.39 23.56 28.98 27.46 25.12 24.22 23.56 27.15 27.37 27.90 27.30
Fe2O3 0.19 0.25 0.15 0.20 0.26 0.22 0.20 0.12 0.22 0.11 0.10 0.07 0.12 0.07 0.18
CaO 6.50 5.86 5.24 4.57 4.17 3.58 10.19 8.68 7.11 5.69 4.90 9.86 9.47 9.02 7.91
Na2O 7.79 8.18 8.10 9.03 9.29 9.53 5.96 6.20 7.42 8.04 8.75 6.17 6.27 6.20 7.23
K2O 0.34 0.31 0.28 0.04 0.08 0.29 0.04 0.13 0.05 0.01 0.05 0.05 0.10 0.07 0.14
BaO 0.00 0.14 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.05 0.00
Total 99.60 100.60 100.55 99.46 99.89 101.31 99.97 98.32 99.51 99.29 99.68 99.46 99.73 99.88 100.16
Number of cations based on 8 O:                          
Si 2.7210 2.7571 2.7858 2.7969 2.7779 2.7972 2.4626 2.5400 2.6681 2.7304 2.7673 2.5387 2.5405 2.5386 2.5677
Ti 0.0020 0.0000 0.0017 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0013 0.0000 0.0000 0.0000 0.0000 0.0000
AlIV 1.2572 1.2225 1.2120 1.1921 1.2215 1.2028 1.5374 1.4600 1.3255 1.2696 1.2327 1.4465 1.4530 1.4614 1.4323
AlVI 0.0000 0.0000 0.0000 0.0000 0.0000 0.0083 0.0030 0.0150 0.0000 0.0043 0.0002 0.0000 0.0000 0.0140 0.0070
Fe+3 0.0063 0.0084 0.0049 0.0067 0.0087 0.0072 0.0068 0.0041 0.0074 0.0037 0.0033 0.0024 0.0041 0.0024 0.0061
Ca 0.3113 0.2777 0.2468 0.2178 0.1980 0.1673 0.4924 0.4238 0.3410 0.2721 0.2331 0.4775 0.4570 0.4336 0.3791
Na 0.6756 0.7009 0.6906 0.7787 0.7977 0.8059 0.5211 0.5478 0.6441 0.6956 0.7532 0.5407 0.5475 0.5397 0.6270
K 0.0192 0.0175 0.0156 0.0023 0.0044 0.0161 0.0023 0.0076 0.0029 0.0006 0.0028 0.0029 0.0057 0.0038 0.0080
Ba 0.0000 0.0025 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0009 0.0000
Total ions 4.9926 4.9866 4.9573 4.9943 5.0082 5.0048 5.0256 4.9983 4.9890 4.9776 4.9927 5.0087 5.0078 4.9943 5.0272
An 30.9 27.9 25.9 21.8 19.8 16.9 48.5 43.3 34.5 28.1 23.6 46.8 45.2 44.4 37.4
Ab 67.1 70.4 72.5 78.0 79.8 81.5 51.3 55.9 65.2 71.8 76.1 53.0 54.2 55.2 61.8
Or 1.9 1.8 1.6 0.2 0.4 1.6 0.2 0.8 0.3 0.1 0.3 0.3 0.6 0.4 0.8