Table 2 Average composition of groundmass glass for the different textural types. HC = highly crystalline, MC = moderately crystalline; PC = poorly crystalline. # ans: number of analyses averaged. Standard deviation (1σ) from the mean is reported in brackets.
Eruption | Type | # ans | SiO2 | TiO2 | Al2O3 | FeOtot | MnO | MgO | CaO | Na2O | K2O | P2O5 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Episode #1 base | HC | 8 | 49.66 (0.47) | 2.21 (0.15) | 15.66 (0.26) | 11.23 (0.35) | 0.25 (0.10) | 3.66 (0.23) | 8.27 (0.20) | 4.36 (0.22) | 3.13 (0.16) | 1.05 (0.44) |
Episode #1 base | MC | 22 | 49.33 (0.41) | 1.98 (0.12) | 16.95 (0.33) | 10.48 (0.42) | 0.24 (0.16) | 4.31 (0.19) | 8.86 (0.23) | 4.12 (0.17) | 2.65 (0.14) | 0.66 (0.19) |
Episode #1 base | PC | 76 | 50.00 (0.45) | 1.94 (0.12) | 17.07 (0.26) | 10.26 (0.24) | 0.21 (0.14) | 3.91 (0.20) | 8.52 (0.31) | 4.22 (0.21) | 2.71 (0.20) | 0.81 (0.30) |
Episode #1 top | HC | 15 | 48.55 (0.61) | 2.14 (0.17) | 15.89 (0.34) | 11.21 (0.48) | 0.19 (0.08) | 4.11 (0.32) | 8.71 (0.27) | 4.09 (0.17) | 2.78 (0.22) | 0.55 (0.08) |
Episode #1 top | MC | 36 | 48.93 (0.50) | 1.94 (0.10) | 16.67 (0.38) | 10.35 (0.41) | 0.22 (0.08) | 4.29 (0.16) | 8.78 (0.30) | 4.03 (0.20) | 2.53 (0.16) | 0.52 (0.13) |
Episode #1 top | PC | 20 | 50.22 (0.27) | 2.02 (0.10) | 17.20 (0.27) | 10.07 (0.32) | 0.22 (0.10) | 3.62 (0.14) | 8.03 (0.19) | 4.24 (0.16) | 3.10 (0.11) | 0.62 (0.08) |
Episode #2 | HC | 13 | 49.87 (0.38) | 1.97 (0.12) | 16.91 (0.21) | 10.22 (0.23) | 0.19 (0.16) | 3.82 (0.13) | 8.14 (0.22) | 4.11 (0.18) | 2.92 (0.19) | 0.92 (0.35) |
Episode #2 | MC | 38 | 49.98 (0.53) | 1.97 (0.13) | 16.91 (0.36) | 10.17 (0.48) | 0.19 (0.11) | 3.73 (0.14) | 8.06 (0.24) | 4.16 (0.20) | 3.03 (0.17) | 0.97 (0.38) |
Episode #2 | PC | 3 | 49.93 (0.49) | 2.00 (0.25) | 16.40 (0.77) | 10.51 (0.23) | 0.29 (0.14) | 3.01 (0.03) | 7.44 (0.23) | 3.89 (0.09) | 3.41 (0.34) | 0.43 (0.02) |
Episode #4 | HC | 7 | 49.83 (0.77) | 2.17 (0.08) | 16.19 (0.46) | 10.87 (0.77) | 0.19 (0.10) | 3.97 (0.33) | 8.45 (0.35) | 3.88 (0.40) | 3.03 (0.25) | 0.42 (0.08) |
Episode #4 | MC | 5 | 47.82 (0.26) | 1.91 (0.19) | 15.76 (0.32) | 10.84 (0.39) | 0.15 (0.10) | 3.88 (0.21) | 8.43 (0.29) | 4.04 (0.24) | 2.61 (0.14) | 0.58 (0.05) |
Episode #4 | PC | 7 | 50.49 (0.46) | 2.02 (0.08) | 17.04 (0.12) | 10.14 (0.25) | 0.22 (0.11) | 3.56 (0.10) | 7.75 (0.16) | 3.95 (0.17) | 3.05 (0.11) | 0.54 (0.07) |
