Table T8. Selected microprobe analyses of amphibole, Hole 735B.
Core, section, interval (cm):
101R-1 (Piece 7, 106-108) 112R-2 (Piece 1, 64-66) 130R-3 (Piece 11, 93-95) 156R-3 (Piece 5, 51-54)
Lithology:
Olivine gabbro Olivine gabbro Olivine gabbro Olivine gabbro
Texture:
M
M
M
VOl
VOl
VOl
VCpx
VCpx
VCpx
M
M
M
BIf
BIf
BIf
BV
BV
BV
M
M
M
VOl
VOl
VCpx
VCpx
VCpx
M
M
BIf
BIf
BIf
BV
BV
BV
VCpx
VCpx
VCpx
SiO2 43.90 44.80 42.82 44.05 44.38 45.26 47.53 45.54 46.30 43.27 43.15 41.44 43.73 43.45 44.14 44.16 43.87 44.03 43.06 44.06 42.85 43.25 44.00 53.19 50.89 51.79 46.51 44.80 43.45 43.95 44.22 46.61 49.26 46.20 46.72 48.43 46.42
TiO2 3.41 2.92 2.83 1.11 0.97 0.36 2.12 3.06 2.86 3.46 2.83 0.25 3.39 3.88 2.68 3.72 3.85 3.69 3.82 2.62 3.52 0.37 0.53 0.83 1.23 1.03 0.40 0.43 3.19 3.04 2.99 2.39 1.53 1.92 1.97 1.40 2.30
Al2O3 11.45 11.88 13.05 13.05 12.80 11.72 8.18 8.77 8.39 11.48 11.65 13.91 10.65 10.75 11.84 10.56 10.19 10.04 10.79 11.86 10.87 13.01 12.69 3.16 4.80 3.95 9.79 11.69 11.04 10.72 10.11 8.07 6.08 8.79 7.91 7.08 8.17
Fe2O3 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1.23 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1.24 1.06 0.00 0.00 0.00 1.49 0.95 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
FeO 10.38 8.54 9.26 9.17 9.54 8.78 11.11 12.00 11.63 11.87 12.63 15.51 11.78 11.37 8.50 11.83 11.70 12.55 12.47 10.52 13.22 9.94 10.28 11.53 11.66 11.01 8.86 8.93 10.26 10.05 10.36 10.48 9.55 10.08 11.74 11.17 11.58
MnO 0.11 0.20 0.14 0.22 0.17 0.17 0.19 0.21 0.18 0.20 0.16 0.20 0.20 0.16 0.12 0.18 0.18 0.17 0.20 0.14 0.20 0.20 0.18 0.23 0.21 0.19 0.24 0.11 0.14 0.08 0.16 0.17 0.15 0.11 0.17 0.18 0.17
MgO 14.34 15.63 14.72 15.73 16.14 16.93 15.34 13.99 14.29 13.88 13.42 10.46 13.61 13.72 15.54 13.58 13.71 13.13 13.26 13.84 12.69 15.06 15.18 17.16 16.73 16.56 16.23 15.63 14.48 14.68 14.79 15.25 16.63 15.64 14.67 15.58 14.64
CaO 11.73 10.82 11.24 9.97 10.17 10.35 10.91 10.81 11.02 10.85 10.89 11.43 11.31 11.10 11.46 10.98 11.11 11.14 10.83 11.68 10.90 10.82 10.91 10.93 11.62 11.30 11.27 11.46 11.73 11.80 11.81 11.64 12.14 11.70 11.62 11.52 11.77
Na2O 2.74 2.50 2.89 2.67 2.92 2.57 1.89 2.35 2.26 3.01 3.03 2.92 2.90 3.10 2.85 2.90 2.94 2.92 2.90 2.39 2.80 2.97 2.82 0.93 1.29 1.17 1.91 2.32 2.84 2.69 2.76 2.18 1.68 2.22 2.01 1.70 2.10
K2O 0.25 0.24 0.29 0.13 0.25 0.17 0.25 0.33 0.30 0.24 0.23 0.28 0.04 0.05 0.14 0.37 0.21 0.21 0.22 0.26 0.22 0.07 0.10 0.06 0.16 0.18 0.22 0.31 0.10 0.13 0.07 0.40 0.19 0.24 0.30 0.23 0.31
Cr2O3 0.01 0.04 0.05 0.00 0.00 0.00 0.08 0.13 0.13 0.00 0.00 0.00 0.04 0.06 0.10 0.02 0.02 0.00 0.02 0.02 0.03 0.00 0.00 0.02 0.01 0.02 0.00 0.01 0.07 0.05 0.03 0.12 0.06 0.06 0.06 0.03 0.06
NiO 0.06 0.01 0.00 0.04 0.03 0.00 0.00 0.01 0.04 0.00 0.01 0.01 0.01 0.00 0.00 0.00 0.02 0.06 0.01 0.03 0.00 0.03 0.04 0.00 0.00 0.01 0.04 0.03 0.00 0.03 0.00 0.02 0.00 0.03 0.00 0.02 0.03
Total 98.36 97.57 97.28 96.15 97.36 97.11 97.58 97.20 97.40 98.25 97.98 97.64 97.64 97.64 97.37 98.29 97.79 97.94 97.56 97.41 97.29 96.96 97.79 98.04 98.58 97.21 96.95 96.66 97.30 97.23 97.31 97.33 97.26 96.99 97.15 97.33 97.57
Cations (O = 23):                                                                      
Si 6.360 6.448 6.240 6.431 6.423 6.543 6.885 6.693 6.770 6.318 6.337 6.220 6.419 6.372 6.391 6.441 6.433 6.470 6.353 6.429 6.362 6.339 6.392 7.584 7.280 7.466 6.749 6.538 6.366 6.429 6.475 6.797 7.113 6.743 6.850 7.032 6.785
Al 1.955 2.015 2.240 2.246 2.184 1.996 1.396 1.519 1.446 1.975 2.016 2.460 1.843 1.858 2.020 1.815 1.762 1.739 1.877 2.040 1.902 2.248 2.172 0.531 0.809 0.671 1.675 2.011 1.906 1.849 1.745 1.387 1.034 1.512 1.367 1.212 1.407
AlIV 1.640 1.552 1.760 1.569 1.577 1.457 1.115 1.307 1.230 1.682 1.663 1.780 1.581 1.628 1.609 1.559 1.567 1.530 1.647 1.571 1.638 1.661 1.608 0.416 0.720 0.534 1.251 1.462 1.634 1.571 1.525 1.203 0.887 1.257 1.150 0.968 1.215
AlVI 0.315 0.462 0.480 0.677 0.607 0.540 0.281 0.212 0.216 0.293 0.353 0.680 0.262 0.230 0.411 0.256 0.195 0.209 0.230 0.469 0.264 0.587 0.565 0.115 0.089 0.137 0.424 0.549 0.272 0.279 0.221 0.184 0.147 0.254 0.217 0.244 0.192
Cr 0.001 0.004 0.006 0.000 0.000 0.000 0.009 0.015 0.015 0.000 0.000 0.000 0.004 0.007 0.012 0.002 0.002 0.000 0.002 0.002 0.003 0.000 0.000 0.002 0.001 0.002 0.000 0.001 0.008 0.006 0.004 0.013 0.006 0.007 0.006 0.004 0.007
Fe3+ 0.000 0.000 0.000 0.000 0.000 0.087 0.000 0.000 0.000 0.000 0.000 0.139 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.137 0.116 0.000 0.000 0.000 0.163 0.105 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000
Ti 0.371 0.316 0.310 0.122 0.105 0.040 0.230 0.338 0.314 0.380 0.312 0.028 0.374 0.428 0.291 0.408 0.424 0.408 0.423 0.288 0.393 0.041 0.057 0.089 0.132 0.111 0.043 0.047 0.352 0.335 0.329 0.262 0.167 0.210 0.217 0.153 0.253
Fe2+ 1.258 1.028 1.128 1.119 1.154 1.061 1.345 1.475 1.422 1.450 1.551 1.947 1.446 1.394 1.029 1.443 1.435 1.542 1.538 1.284 1.641 1.218 1.249 1.374 1.395 1.327 1.075 1.090 1.257 1.230 1.269 1.278 1.153 1.230 1.440 1.356 1.416
Mn 0.013 0.024 0.018 0.027 0.020 0.021 0.023 0.026 0.022 0.024 0.020 0.026 0.024 0.020 0.014 0.022 0.022 0.022 0.025 0.017 0.025 0.024 0.022 0.028 0.025 0.024 0.030 0.013 0.017 0.010 0.020 0.021 0.018 0.014 0.021 0.023 0.021
Mg 3.097 3.353 3.197 3.424 3.481 3.648 3.313 3.065 3.116 3.021 2.938 2.340 2.977 2.999 3.354 2.953 2.997 2.876 2.917 3.011 2.809 3.291 3.287 3.648 3.567 3.558 3.510 3.400 3.164 3.203 3.228 3.316 3.580 3.402 3.207 3.372 3.190
Ni 0.007 0.001 0.000 0.004 0.003 0.000 0.000 0.002 0.005 0.000 0.001 0.001 0.001 0.000 0.000 0.000 0.002 0.007 0.001 0.003 0.000 0.003 0.005 0.000 0.000 0.001 0.004 0.003 0.000 0.003 0.000 0.003 0.000 0.003 0.000 0.003 0.004
Ca 1.821 1.668 1.755 1.560 1.577 1.603 1.693 1.703 1.726 1.698 1.714 1.839 1.778 1.744 1.778 1.715 1.746 1.753 1.712 1.826 1.735 1.699 1.698 1.670 1.781 1.745 1.752 1.792 1.842 1.850 1.853 1.818 1.878 1.829 1.825 1.792 1.843
Na 0.769 0.698 0.816 0.756 0.819 0.719 0.531 0.669 0.640 0.852 0.864 0.851 0.826 0.882 0.800 0.821 0.835 0.833 0.830 0.675 0.807 0.843 0.794 0.258 0.358 0.328 0.536 0.656 0.807 0.763 0.783 0.617 0.471 0.629 0.570 0.478 0.596
K 0.046 0.044 0.054 0.025 0.046 0.031 0.045 0.061 0.057 0.045 0.043 0.053 0.007 0.009 0.027 0.069 0.039 0.039 0.040 0.049 0.041 0.013 0.018 0.012 0.028 0.034 0.041 0.057 0.019 0.024 0.014 0.075 0.034 0.045 0.056 0.043 0.059
Total 15.699 15.598 15.763 15.714 15.812 15.750 15.470 15.566 15.534 15.763 15.796 15.904 15.699 15.713 15.715 15.688 15.698 15.689 15.719 15.624 15.717 15.856 15.812 15.196 15.376 15.267 15.577 15.713 15.738 15.702 15.720 15.587 15.453 15.625 15.560 15.468 15.582
Mg# 71.1 76.5 73.9 75.4 75.1 77.5 71.1 67.5 68.7 67.6 65.5 54.6 67.3 68.3 76.5 67.2 67.6 65.1 65.5 70.1 63.1 73.0 72.5 72.6 71.9 72.8 76.6 75.7 71.6 72.3 71.8 72.2 75.6 73.4 69.0 71.3 69.3

Notes: M = magmatic rim, VOl = vein in olivine, VCpx = vein in clinopyroxene, BIf = bleb in interfingering clinopyroxene, BV = bleb near vein, and Mg# = 100 x Mg/(Mg + Fe). See "Appendix" for procedures of formula calculation.