Electronic Supplementary Materials Table 4 Electron-microprobe major-oxide analyses of glasses from ashy sands overlying MSH-W tephra at Paradise, Mount Rainier
Sample / n / SiO2 / TiO2 / Al2O3 / FeO* / MnO / MgO / CaO / Na2O / K2O / P2O5 / Cl / SO3 / total
upper deposit
JV944-2-1 / 7 / 76.1 / 0.74 / 11.6 / 2.37 / 0.04 / 0.21 / 0.88 / 3.63 / 4.19 / 0.12 / 0.07 / 0.00 / 99.5
JV944-2-2 / 5 / 73.1 / 0.89 / 13.0 / 3.38 / 0.07 / 0.40 / 1.76 / 3.78 / 3.41 / 0.16 / 0.08 / 0.02 / 99.5
JV944-2-3 / 4 / 71.0 / 1.03 / 13.3 / 4.09 / 0.04 / 0.52 / 2.05 / 4.11 / 3.47 / 0.27 / 0.10 / 0.01 / 99.6
JV944-2-4 / 10 / 71.9 / 0.73 / 13.6 / 3.09 / 0.04 / 0.46 / 1.95 / 4.03 / 3.98 / 0.15 / 0.08 / 0.01 / 96.0
JV944-2-5 MSH-X? / 5 / 51.6 / 3.43 / 14.9 / 11.1 / 0.17 / 3.70 / 6.66 / 4.10 / 3.20 / 0.98 / 0.07 / 0.02 / 98.9
JV944-2-6 / 9 / 72.8 / 0.92 / 12.5 / 3.59 / 0.07 / 0.44 / 1.70 / 3.92 / 3.75 / 0.20 / 0.08 / 0.01 / 99.2
JV944-2-7 / 7 / 73.0 / 0.94 / 12.2 / 3.64 / 0.04 / 0.39 / 1.69 / 4.13 / 3.57 / 0.26 / 0.07 / 0.00 / 99.0
JV944-2-8 / 5 / 69.7 / 1.16 / 13.2 / 4.60 / 0.03 / 0.76 / 2.07 / 4.18 / 3.91 / 0.26 / 0.12 / 0.01 / 98.9
JV944-2-9 / 5 / 64.7 / 1.07 / 15.5 / 5.14 / 0.08 / 1.79 / 4.19 / 4.42 / 2.70 / 0.34 / 0.08 / 0.00 / 99.7
JV944-2-10 / 3 / 68.5 / 1.29 / 13.2 / 5.43 / 0.05 / 1.12 / 2.91 / 4.03 / 3.01 / 0.33 / 0.10 / 0.00 / 99.0
JV944-2-11 / 5 / 72.5 / 0.89 / 12.6 / 3.67 / 0.09 / 0.49 / 1.80 / 4.33 / 3.31 / 0.21 / 0.08 / 0.01 / 99.6
JV944-2-12 / 4 / 69.3 / 1.33 / 12.9 / 5.29 / 0.07 / 0.76 / 2.67 / 4.01 / 3.32 / 0.32 / 0.06 / 0.02 / 99.6
JV944-2-13 / 9 / 66.6 / 1.45 / 13.8 / 5.83 / 0.09 / 1.06 / 3.08 / 4.26 / 3.33 / 0.36 / 0.11 / 0.01 / 99.3
JV944-2-14 / 4 / 68.6 / 1.25 / 13.9 / 4.88 / 0.06 / 0.88 / 2.85 / 4.11 / 3.01 / 0.33 / 0.08 / 0.00 / 99.4
JV944-2-15 / 10 / 66.9 / 1.16 / 14.1 / 5.24 / 0.08 / 1.20 / 3.17 / 4.42 / 3.26 / 0.32 / 0.09 / 0.01 / 99.7
lower deposit
JV944-1-1 / 10 / 61.7 / 2.03 / 14.0 / 7.37 / 0.13 / 2.04 / 3.96 / 4.01 / 3.97 / 0.74 / 0.10 / 0.01 / 100.0
JV944-1-2 / 10 / 69.0 / 1.16 / 13.1 / 4.72 / 0.09 / 0.80 / 2.18 / 3.93 / 4.56 / 0.25 / 0.20 / 0.01 / 99.7
JV944-1-3 / 10 / 73.8 / 0.41 / 13.4 / 2.03 / 0.05 / 0.39 / 1.62 / 3.87 / 4.26 / 0.07 / 0.09 / 0.00 / 96.3
JV944-1-4 / 5 / 71.8 / 0.91 / 12.6 / 3.97 / 0.08 / 0.61 / 1.94 / 3.68 / 4.05 / 0.19 / 0.08 / 0.00 / 99.5
JV944-1-5 / 8 / 73.3 / 0.90 / 12.2 / 3.77 / 0.05 / 0.44 / 1.57 / 4.00 / 3.57 / 0.19 / 0.04 / 0.00 / 99.6
JV944-1-6 / 5 / 61.5 / 1.77 / 14.8 / 7.37 / 0.15 / 2.16 / 4.35 / 4.98 / 2.29 / 0.54 / 0.10 / 0.01 / 99.6
JV944-1-7 / 10 / 67.9 / 1.12 / 14.3 / 4.36 / 0.07 / 1.21 / 3.19 / 4.10 / 3.40 / 0.32 / 0.02 / 0.00 / 99.7
JV944-1-8 / 5 / 68.8 / 1.02 / 13.8 / 4.33 / 0.07 / 1.08 / 2.91 / 3.93 / 3.76 / 0.27 / 0.06 / 0.01 / 99.8
JV944-1-9 / 10 / 68.5 / 1.00 / 14.1 / 4.30 / 0.09 / 1.09 / 2.93 / 3.98 / 3.66 / 0.24 / 0.07 / 0.02 / 99.8
JV944-1-10 / 5 / 69.9 / 1.25 / 13.2 / 4.50 / 0.05 / 0.75 / 2.64 / 3.70 / 3.56 / 0.31 / 0.07 / 0.00 / 100.0
JV944-1-11 / 10 / 73.5 / 0.69 / 12.8 / 2.81 / 0.05 / 0.39 / 1.38 / 3.85 / 4.29 / 0.09 / 0.09 / 0.00 / 99.9
JV944-1-12 / 15 / 71.8 / 0.98 / 12.8 / 3.95 / 0.05 / 0.54 / 1.94 / 4.01 / 3.68 / 0.22 / 0.07 / 0.01 / 99.2
* - Analyses are averaged glass compositions for individual grains normalized to 100 wt% with all Fe as FeO, total gives original total, n gives number of analyses averaged, MSH designates Mt St Helens materials.