Appendix Chemical Composition of Ejecta from Recently Active Volcanoes at Convergent Plate Boundaries * 5 Arcl Volcano2 No.3 <53% 53-57 57-63 >63 KS7.s FeO*/ Ref. 6 Si02 4 MgOS7.S 1. New Zealand (Fig. 1) 1.1 White Island 16 0 1 11 4 1.1 1.4 1,126 1.2 Okataina (Tarawera) 25 0 0 0 25 1,129 1.3 Taupo 4 0 0 0 4 1 1.4 Tongariro 66 3 18 45 0 0.8- 1.4 1,2 1.6 1.5 Ngauruhoe 4 0 2 2 0 1.3 1.6 1,2 1.6 Ruapehu 16 0 3 13 0 1.5 1.6 1,2 1.7 Egmont 22 4 16 2 0 2.2 2.3 1,3 2. Kermadec (Fig. 1) 2.1 Raoul 13 8 3 0 2 0.5 3.0 4,139 2.2 Macauley* 9 8 0 0 1 0.4 5,139 3. Tonga (Fig. 2) 3.1 Hunga Ha'apai 2 0 2 0 0 6 3.2 Tofua 11 0 8 2 1 0.5 2.8 8,9 3.3 Metis Shoal 2 0 0 0 2 6,7 3.4 Late 10 0 9 1 0 0.6 2.7 6 3.5 Fonualei 15 0 0 3 12 (0.8) (3.8) 6 4. Vanuatu (Fig. 3) 4.1 Suretamatai 16 12 3 1 0 1.9 (3.4) 138 4.2 Gaua 8 6 2 0 0 >5.0 >3.7 140 4.3 Aoba 42 42 0 0 0 10 4.4 Ambrym 8 8 0 0 0 10,11 4.5 Lopevi 9 5 1 3 0 1.4 (2.0) 139 4.6 E. Epi* 14 11 3 0 0 1.6 10 4.7 Tongoa 22 18 0 0 4 (2.0) 10 4.8 Erromango 92 77 13 2 0 1.4 2.5 147 + 3.5 4.9 Tanna 9 0 7 2 0 (2.5) (3.0) 10 5. Solomon Islands (Fig. 4) 5.1 Savo 4 0 1 1 2 (1.9) 13 5.2 New Georgia 17 12 5 0 0 3.0 2.1 14 5.3 Bagana 40 1 34 5 0 1.7 2.5 15 5.4 Balbi 2 0 0 2 0 2.5 2.0 15 * See p. 326 for explanation of footnotes, pp.327/328 for references, and pp. 329-336 for figures 318 Appendix 5 Arcl Volcano2 No.3 <53% 53-57 57-63 >63 KS7.s FeO*j Ref. 6 Si024 MgOS7.S 6. Bismarck (Fig. 4) 6.1 Rabaul 21 5 3 8 5 1.7 (2.7) 16,17 6.2 Ulawun 22 19 3 0 0 0.5 (1.7) 19 6.3 Bamus 12 0 8 4 0 0.4 2.8 19 6.4 Hargy- Galloseulo 14 0 4 7 3 0.6 2.3 19 6.5 Lolobau 15 1 5 3 6 0.7 2.6 19 6.6 Sulu* 10 0 7 0 3 0.6 1.6 19 6.7 Witori* 12 0 0 3 9 0.5 3.0 18, 19 6.8 Krummel- Hoskins 35 1 14 13 7 0.7 2.0 18,19 6.9 Talasea 19 1 0 12 6 1.3 2.1 19,20 6.10 N. Willaumez 15 3 2 5 5 1.3 2.5 19,20 6.11 Witu I. 29 13 7 4 5 0.7 19 + 1.7 6.12 Karkar 14 0 13 1 0 0.9 2.7 21,22 6.13 Manam 16 11 4 1 0 21 7. Papua New Guinea (Fig. 4) 7.1 Highlands 30 15 8 6 1 1.5- 2.5 23 2.5 7.2 Lamington 29 1 10 14 4 2.2 1.3 12,13 7.3 Victory, Trafalgar 19 0 3 16 0 2.0 1.1 13,24 8. Sunda (Fig. 5) a) Sumatra 8.1 Sorikmarapi 2 0 0 2 0 (1.6) (2.0) 25 8.2 Talakmau 3 0 0 3 0 1.6 2.1 25,26 8.3 Marapi 6 0 3 3 0 2.2 (2) 25-27 8.4 Tandikat 5 0 1 3 1 1.7 2.0 25-27 8.5 Krakatau 34 7 4 5 18 1.4 2.3 25,26 b) Java 8.6 Tangkuban 21 3 10 8 0 2.3 2.7 25,28 8.7 Guntur 3 2 0 1 0 0.8 2.2 25,28 + 1.4 8.8 Papandajan 12 0 2 8 2 1.2 2.1 25,28 8.9 Galunggung 4 1 3 0 0 0.8 2.2 25,28 8.10 Tjerimai 15 0 9 6 0 1.6 1.9 25,28 8.11 Slamet 22 18 4 0 0 (1.7) (2.0) 25,28 8.12 Dieng 12 1 3 8 0 1.8 2.2 25,28 8.13 Sundoro 14 2 6 6 0 2.0 2.6 28 8.14 Sumbing 16 1 3 12 0 1.8 2.2 25,28 8.15 Ungaran 19 10 8 1 0 3.1 2.2 25,28 8.16 Merabu 13 6 2 5 0 2.0 2.2 25,28 8.17 Merapi 30 8 22 0 0 2.1 2.6 25,28 8.18 Kelud 6 1 2 3 0 1.0 2.4 25,28 Chemical Composition of Ejecta from Recently Active Volcanoes 319 5 l 2 No.3 53-57 57-63 >63 • Ref. Arc Volcano <53% KS7 S FeO*/ 6 Si024 Mg°S7.S 8.19 Semeru 9 2 1 6 0 1.4 2.9 25,28 8.20 Bromo 7 0 5 2 0 2.9 (2.5) 25,28 8.21 Raung 9 4 3 2 0 1.8 (2.8) 25 c) Bali-Banda 8.22 Batur 9 4 0 0 5 (1.7) 28 8.23 Agung 8 2 5 1 0 1.6 (2.3) 28 8.24 Seraja 4 1 3 0 0 1.7 >2.5 28 8.25 Paluweh 12 5 2 5 0 2.2 2.5 25 8.26 IIi Boleng 3 1 1 1 0 2.1 2.7 25,29 8.27 Lewotolo 7 2 2 3 0 (3.5) (2.4) 25,29 8.28 Sirung 5 2 1 0 2 1.8 (3.2) 29 8.29 Damar 5 0 0 5 0 2.5 1.8 29 8.30 Teun 4 0 0 4 0 (1.8) (1.8) 29 8.31 Nila 5 0 4 1 0 2.2 1.8 29 8.32 Serua 6 0 2 4 0 1.1 1.4 29 8.33 Manuk 5 0 2 3 0 1.0 1.5 29 8.34 Banda 8 1 0 0 7 (0.5) (2.8) 29 9.Halmahera (Fig. 6) 9.1 Dukono 6 1 1 1 3 2.0 (2.7) 25 9.2 Ternate 6 0 2 3 1 1.8 2.9 30 9.3 Tidore* 5 2 0 1 2 1.8 31 10. Sulawesi (Fig. 6) 10.1 Lokon- Empung 5 2 1 0 2 1.5 25 11.S.E. Philippines (Fig. 7) 11.1 Mayon 55 6 47 2 0 1.2 2.2 32,33, 34 12.N.W. Philippines Taiwan (Fig. 7) 12.1 Taal 4 2 1 1 0 (2.2) 3.0 32 12.2 Kuei-shan-tao 5 0 1 4 0 1.1 1.8 35 12.3 Tatun area 16 9 3 3 1 1.8 2.1 35 12.4 Keelung* 9 1 4 4 0 1.6 1.7 35 12.5 Agin-court 3 3 0 0 0 35 13. Ryuku-West Japan (Fig. 8) 13.1 Suwanosezima 13 0 3 10 0 1.3 2.1 36,37 13.2 Nakano-zima 4 0 0 2 2 0.9 1.7 36 13.3 Kutinoerabu- ziina 3 0 0 3 0 « 1.5) « 1.9) 36,37 13.4 Tokara-Iwo- zima 12 2 1 0 9 (0.8) 36 13.5 Sakurajima 83 0 0 37 46 1.4 2.1 36,37 13.6 Kirisima 21 2 7 11 1 1.9 2.4 36,37 320 Appendix 5 Arcl Volcano2 No.3 <53% 53-57 57-63 >63 KS7.S FeO*/ Ref. 6 Si024 MgOS705 13.7 Unzen 7 0 0 3 4 1.6 1.9 36 13.8 Aso 35 9 11 9 4 2.2 2.1 36 13.9 Kuzyo 9 1 3 4 1 1.5 2.7 36 14.Mariana-Izu (Figs. 9, 10) 14.a Sarigan 4 1 2 1 0 0.7 1.9 150 14.b Pagan 16 14 2 0 0 >1.4 >2.4 36,38, 150 14.1 Agrigan 29 17 10 2 0 1.8 4.1 151 14.2 Asuncion 6 0 6 0 0 >2.8 150 14.3 Uracas 5 2 3 0 0 1.2 3.4 36,37 14.4 Tori-zima 8 5 2 1 0 0.4 2.3 36 14.5 Aoga -zima 4 2 0 2 0 0.4 3.8 36 14.6 Hatizyo-zima 32 19 4 5 4 0.5 3.0 36,39 14.7 Miyake-zima 12 4 8 0 0 0.5 5.9 36 14.8 Kozu-zima 5 0 0 0 5 36 14.90sima 7 7 0 0 0 36 15.East Japan (Fig.