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Contents Volume 164 (2007)
Journal of Volcanology and Geothermal Research 164 (2007) 317 www.elsevier.com/locate/jvolgeores
Contents Volume 164 (2007) Research Papers Multiple rhyolite magmas and basalt injection in the 17.7 ka Rerewhakaaitu eruption episode from Tarawera volcanic complex, New Zealand P. Shane, S.B. Martin, V.C. Smith, K.F. Beggs, M.B. Darragh, J.W. Cole and I.A. Nairn . . . . . . . . . . . . . . . . . . . . . . . . . . . Geology of the Vilama caldera: A new interpretation of a large-scale explosive event in the Central Andean plateau during the Upper Miocene M.M. Soler, P.J. Caffe, B.L. Coira, A.T. Onoe and S. Mahlburg Kay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Time-dependent model for volume changes in pressure sources at Asama volcano, central Japan due to vertical deformations detected by precise leveling during 1902–2005 M. Murase, K. Ono, T. Ito, R. Miyajima, H. Mori, H. Aoyama, H. Oshima, Y. Yoshida, A. Terada, E. Koyama, T. Takeda, H. Watanabe, F. Kimata and N. Fujii . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Compositional diversity among primitive lavas of Mauritius, Indian Ocean: Implications for mantle sources D. Paul, V.S. Kamenetsky, A.W. Hofmann and A. Stracke. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Statistical analysis of bubble and crystal size distributions: Formulations and procedures A.A. Proussevitch, D.L. Sahagian and E.P. Tsentalovich . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Statistical analysis of bubble and crystal size distributions: Application to Colorado Plateau basalts A.A. Proussevitch, D.L. Sahagian and W.D. Carlson . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Vent geometry and eruption conditions of the mixed rhyolite–basalt Na´mshraun lava flow, Iceland L. Wilson, S.A. Fagents, L.E. Robshaw and E.D. Scott . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Conceptual and numerical models of ring-fault formation A. Gudmundsson . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-D density model of Mt. Etna Volcano (Southern Italy) D. Schiavone and M. Loddo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A 3D magnetic structure of Izu-Oshima Volcano and their changes after the eruption in 1986 as estimated from repeated airborne magnetic surveys Y. Ueda. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 Ar/39Ar geochronology of Neogene phreatomagmatic volcanism in the western Pannonian Basin, Hungary J. Wijbrans, K. Ne´meth, U. Martin and K. Balogh . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Fiamme textures in volcanic successions: Flaming issues of definition and interpretation K.F. Bull and J. McPhie . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ACTIVE system for monitoring volcanic activity: A case study of the Izu-Oshima Volcano, Central Japan H. Utada, Y. Takahashi, Y. Morita, T. Koyama and T. Kagiyama . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Pele’s hairs and tears: Natural probe of volcanic plume S. Moune, F. Faure, P.-J. Gauthier and K.W.W. Sims . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Magmatic structures in the Krkonosˇe–Jizera Plutonic Complex, Bohemian Massif: evidence for localized multiphase flow and small-scale thermal–mechanical instabilities in a granitic magma chamber J. Zˇa´k and J. Klomı´nsky´ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Magnetic petrology of the 1991–1995 dacite lava of Unzen volcano, Japan: Degree of oxidation and implications for the growth of lava domes T. Saito, N. Ishikawa and H. Kamata . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Fluidization and de-aeration of pyroclastic mixtures: The influence of fines content, polydispersity and shear flow P. Bareschino, T. Gravina, L. Lirer, A. Marzocchella, P. Petrosino and P. Salatino. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . The effect of volcanic eruptions on the chemistry of surface waters: The 1991 and 2000 eruptions of Mt. Hekla, Iceland T.K. Flaathen and S.R. Gislason . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Contents Volume 164 (2007) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1 27
54 76 95 112 127 142 161 176 193 205 217 244
254 268 284 293 317
Contents Volume 164 (2007) Research Papers Multiple rhyolite magmas and basalt injection in the 17.7 ka Rerewhakaaitu eruption episode from Tarawera volcanic complex, New Zealand P. Shane, S.B. Martin, V.C. Smith, K.F. Beggs, M.B. Darragh, J.W. Cole and I.A. Nairn . . . . . . . . . . . . . . . . . . . . . . . . . . . Geology of the Vilama caldera: A new interpretation of a large-scale explosive event in the Central Andean plateau during the Upper Miocene M.M. Soler, P.J. Caffe, B.L. Coira, A.T. Onoe and S. Mahlburg Kay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Time-dependent model for volume changes in pressure sources at Asama volcano, central Japan due to vertical deformations detected by precise leveling during 1902–2005 M. Murase, K. Ono, T. Ito, R. Miyajima, H. Mori, H. Aoyama, H. Oshima, Y. Yoshida, A. Terada, E. Koyama, T. Takeda, H. Watanabe, F. Kimata and N. Fujii . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Compositional diversity among primitive lavas of Mauritius, Indian Ocean: Implications for mantle sources D. Paul, V.S. Kamenetsky, A.W. Hofmann and A. Stracke. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Statistical analysis of bubble and crystal size distributions: Formulations and procedures A.A. Proussevitch, D.L. Sahagian and E.P. Tsentalovich . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Statistical analysis of bubble and crystal size distributions: Application to Colorado Plateau basalts A.A. Proussevitch, D.L. Sahagian and W.D. Carlson . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Vent geometry and eruption conditions of the mixed rhyolite–basalt Na´mshraun lava flow, Iceland L. Wilson, S.A. Fagents, L.E. Robshaw and E.D. Scott . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Conceptual and numerical models of ring-fault formation A. Gudmundsson . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-D density model of Mt. Etna Volcano (Southern Italy) D. Schiavone and M. Loddo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A 3D magnetic structure of Izu-Oshima Volcano and their changes after the eruption in 1986 as estimated from repeated airborne magnetic surveys Y. Ueda. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 Ar/39Ar geochronology of Neogene phreatomagmatic volcanism in the western Pannonian Basin, Hungary J. Wijbrans, K. Ne´meth, U. Martin and K. Balogh . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Fiamme textures in volcanic successions: Flaming issues of definition and interpretation K.F. Bull and J. McPhie . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ACTIVE system for monitoring volcanic activity: A case study of the Izu-Oshima Volcano, Central Japan H. Utada, Y. Takahashi, Y. Morita, T. Koyama and T. Kagiyama . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Pele’s hairs and tears: Natural probe of volcanic plume S. Moune, F. Faure, P.-J. Gauthier and K.W.W. Sims . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Magmatic structures in the Krkonosˇe–Jizera Plutonic Complex, Bohemian Massif: evidence for localized multiphase flow and small-scale thermal–mechanical instabilities in a granitic magma chamber J. Zˇa´k and J. Klomı´nsky´ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Magnetic petrology of the 1991–1995 dacite lava of Unzen volcano, Japan: Degree of oxidation and implications for the growth of lava domes T. Saito, N. Ishikawa and H. Kamata . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Fluidization and de-aeration of pyroclastic mixtures: The influence of fines content, polydispersity and shear flow P. Bareschino, T. Gravina, L. Lirer, A. Marzocchella, P. Petrosino and P. Salatino. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . The effect of volcanic eruptions on the chemistry of surface waters: The 1991 and 2000 eruptions of Mt. Hekla, Iceland T.K. Flaathen and S.R. Gislason . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Contents Volume 164 (2007) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1 27
54 76 95 112 127 142 161 176 193 205 217 244
254 268 284 293 317