Table T5. Selected analyses of chlorites from Sites 1117, 1118, and 1109. (Continued on next page.)
Core, section, interval (cm): 180-1109D-44R-1, 75-88 180-1109D-48R-2, 87-105 180-1109D-51R-4, 6-9 180-1118A-74R-2, 123-138 180-1118A-76R-1, 28-29
Depth (mbsf): -750 -782 -797 -898 -910
Matrix: Diabase Diabase Basalt Diabase Fine grained diabase
Placement: In vein After cpx After cpx After cpx After cpx In vein
Major element oxide (wt%):











SiO2 28.91 29.3
30.31 30.48
27.92 27.99
28.36 30.48
29.31 28.75 28.91 30.35
Al2O3 12.08 15.24
15.34 14.86
16.12 16.1
15.07 14.86
13.45 14.82 12.08 15.08
TiO 0.07 0.05
0.04 0
0.07 0.13
0.15 0
0 0.05 0.07 0
FeO 25.16 30.78
27.21 26.53
32.51 31.7
31.87 26.53
32.13 32.52 25.16 32.17
MgO 10.72 11.27
13.69 13.65
8.75 9.13
10.22 13.65
11.25 10.39 10.72 11.11
CaO 1.05 1.64
1.72 1.27
1.48 1.76
1.06 1.27
1.13 1.24 1.05 1.11
MnO 0.14 0.19
0.17 0.08
0.31 0.39
0.04 0.08
0.22 0.22 0.14 0.23
Cr2O3 0 0
0 0
0 0
0 0
0 0 0 0
Na2O 0.09 0.03
0.12 0.04
0.04 0.06
0.02 0.04
0.05 0.07 0.09 0.03
Total 78.22 88.5
88.6 86.91
87.2 87.26
86.8 86.92
87.54 88.06 78.22 90.09
Si 6.881 6.305
6.378 6.503
6.177 6.169
6.269 6.503
6.437 6.287 6.882 6.426
AlIV 1.119 1.695
1.622 1.497
1.823 1.831
1.731 1.497
1.563 1.713 1.118 1.574
AlVI 2.27 2.171
2.182 2.24
2.38 2.352
2.196 2.24
1.919 2.107 2.271 2.19
Ti 0.013 0.008
0.006 0
0.012 0.022
0.025 0
0 0.008 0.012 0
Fe 5.008 5.54
4.788 4.734
6.015 5.843
5.891 4.733
5.902 5.947 5.008 5.695
Mg 3.805 3.615
4.294 4.341
2.886 3
3.368 4.342
3.683 3.387 3.802 3.507
Ca 0.268 0.378
0.388 0.29
0.351 0.416
0.251 0.29
0.266 0.291 0.269 0.252
Mn 0.028 0.035
0.03 0.014
0.058 0.073
0.008 0.015
0.041 0.041 0.028 0.042
Cr 0 0
0 0
0 0
0 0
0 0 0 0
Na 0.042 0.013
0.049 0.017
0.017 0.026
0.009 0.018
0.021 0.03 0.041 0.013
Total 19.432 19.76
19.74 19.637
19.718 19.731
19.748 19.638
19.832 19.81 19.432 19.698
T (°C) (AlIV): 118 211
199 179
232 233
214 180
190 214 192 114

Notes: cpx = clinopyroxene. Temperatures calculated using the Cathelineau and Nieva (1985) thermometer are indicated at the bottom of the columns. Bold entries are the value used for the chlorite thermometry.