Table T22. Summary of criteria defining transitions between alteration zones.
| Subdivision | Core, section, interval (cm) |
Depth (mbsf) |
Criterion |
|---|---|---|---|
| 206-1256D- | |||
| Low-temperature alteration | 2R-1, 0 | 250 | |
| 309-1256D- | |||
| Alteration transition zone | 112R-1, 14–17 | 981 | First chlorite-smectite at 980.6 mbsf |
| Hydrothermal alteration | 122R-1, 12–14 | 1027 | First green background alteration at 1027.57 mbsf |
| First chlorite at 1017 mbsf | |||
| First actinolite in vein at 1027.65 mbsf | |||
| First prehnite at 1032 mbsf | |||
| First titanite at 1051 mbsf | |||
| First epidote at 1095 mbsf |
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