Depth (cm) / 110 / 155 / 70 / 72 / 60 / 120 / 37 / 45 / 47 / 50 / 26 / 39 / 16 / 27 / 30 / 55 / 40
Code / bs / bs / bs / bs / bs / bs / qs / qs / ps / ps / ps / ps / ps / ps / ps / ps / ps
Oxide (wt.%)
SiO2 / 7.70 / 5.04 / 23.13 / 20.64 / 37.83 / 40.96 / 68.44 / 78.18 / 59.66 / 57.53 / 63.04 / 60.27 / 39.38 / 47.05 / 51.05 / 55.10 / 56.16
Al2O3 / 2.25 / 1.49 / 6.96 / 4.61 / 7.65 / 8.73 / 5.88 / 5.60 / 19.36 / 19.90 / 18.14 / 19.38 / 9.45 / 7.03 / 10.35 / 11.56 / 5.88
Fe2O3 / 3.40 / 2.83 / 4.46 / 1.69 / 2.49 / 3.15 / 9.64 / 4.86 / 12.29 / 14.01 / 7.54 / 11.74 / 21.35 / 22.03 / 4.17 / 4.72 / 11.13
MgO / 6.43 / 4.22 / 5.73 / 1.07 / 0.84 / 0.70 / 0.77 / 0.69 / 1.00 / 1.14 / 1.23 / 1.13 / 1.02 / 0.75 / 0.80 / 0.76 / 0.75
CaO / 77.26 / 84.73 / 53.97 / 68.24 / 46.85 / 41.88 / 10.00 / 6.82 / 1.05 / 1.19 / 2.52 / 1.11 / 22.76 / 15.93 / 27.54 / 21.93 / 21.69
Na2O / 1.02 / 0.77 / 2.07 / 1.26 / 1.44 / 1.47 / 0.67 / 0.85 / 1.05 / 0.99 / 2.69 / 1.10 / 0.82 / 0.58 / 2.32 / 2.03 / 0.55
K2O / 0.12 / 0.05 / 0.52 / 0.58 / 1.10 / 1.19 / 0.25 / 0.31 / 1.47 / 1.34 / 1.59 / 1.51 / 0.35 / 0.18 / 1.60 / 1.46 / 0.22
TiO2 / 0.66 / 0.51 / 0.51 / 0.27 / 0.41 / 0.53 / 2.04 / 1.14 / 1.47 / 1.44 / 1.05 / 1.38 / 1.17 / 2.20 / 0.53 / 0.68 / 1.58
MnO / 0.26 / 0.24 / 0.26 / 0.04 / 0.07 / 0.06 / 0.13 / 0.09 / 0.17 / 0.09 / 0.17 / 0.20 / 0.22 / 0.23 / 0.09 / 0.08 / 0.17
P2O5 / 0.17 / 0.16 / 0.18 / 0.09 / 0.10 / 0.13 / 0.18 / 0.10 / 0.24 / 0.28 / 0.30 / 0.22 / 0.51 / 0.46 / 0.09 / 0.10 / 0.24
Ba / 0.0072 / 0.0064 / 0.0128 / 0.0103 / 0.0142 / 0.0152 / 0.0069 / 0.0076 / 0.0364 / 0.0357 / 0.0394 / 0.0386 / 0.0116 / 0.0087 / 0.0204 / 0.0199 / 0.0068
Sr / 0.3932 / 0.3715 / 0.3180 / 0.7064 / 0.3648 / 0.3977 / 0.0160 / 0.0180 / 0.0185 / 0.0186 / 0.0232 / 0.0158 / 0.1042 / 0.0476 / 0.2864 / 0.2356 / 0.0274
Total / 100.00 / 100.71 / 98.56 / 99.39 / 99.42 / 99.52 / 98.99 / 99.15 / 99.05 / 99.35 / 99.07 / 99.27 / 99.26 / 98.71 / 99.27 / 99.15 / 99.52
ESM1Major element composition of 1883 Krakatau tsunami deposits. Sample codes:bs bioclastic sand; qs quartz-dominated sand; ps pumiceous sand. KA samples are from Kalianda (Fig. 6), SU4 and SU5 from Sumur (Fig. 3), SU2 from Cigorondong, UJ from Ujung Kulon (Fig. 2), and AN from Cikoneng River, near Anyer (Fig. 5b).Values recalculated to volatile-free oxide totals of 100 wt.%.