Table T2. Summary statistics for component analysis of 65 visible tephra layers presented in Table T1.
| Nonvesicular | Vesicular | Altered lava |
Crystals and glass shards |
Scoria | Biogenic | |
|---|---|---|---|---|---|---|
| Number of samples: | 5 (>30%) | 19 (>30%) | 0 | 58 (>40%) | 6 (>10%) | 0 |
| Minimum value (%): | 0.0 | 0.0 | 0.0 | 18.7 | 0.0 | 0.0 |
| Maximum value (%): | 47.9 | 76.6 | 15.5 | 95.6 | 45.1 | 31.5 |
| Average (%): | 8.9 | 22.2 | 4.1 | 58.5 | 3.0 | 3.2 |
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