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http://hdl.handle.net/2122/7522
Authors: | La Felice, S.* Landi, P.* |
Title: | The 2009 paroxysmal explosions at Stromboli (Italy): magma mixing and eruption dynamics | Journal: | Bulletin of Volcanology | Series/Report no.: | 9/73(2011) | Publisher: | Springer-Verlag | Issue Date: | Nov-2011 | DOI: | 10.1007/s00445-011-0502-z | URL: | http://www.springerlink.com/content/k880217450w58442/ | Keywords: | Stromboli Paroxysm Glass chemistry Mixing Eruption dynamics |
Subject Classification: | 04. Solid Earth::04.08. Volcanology::04.08.03. Magmas 04. Solid Earth::04.08. Volcanology::04.08.06. Volcano monitoring |
Abstract: | Three small-scale paroxysmal explosions (also called major explosions) interrupted ordinary mild Strombolian activity at Stromboli on May 3, November 8 and 24, 2009. Products were largely confined to the summit area, except in the November 24 event, during which coarse pumiceous lapilli reached the coast. Emission of crystal-poor pumice closely mingled with crystal-rich products characterized the three events. The textural and chemical study of minerals and glassy matrices revealed that the two end-members are mingled together physically in the May 3 and November 24 pumice, whereas November 8 products contain heterogeneous glass with intermediate compositions derived from chemical mixing between crystal-rich and crystal-poor magmas. We here discuss the different degrees of interaction between the two magmas in the three explosions in terms of magma dynamics during small-scale paroxysms. |
Appears in Collections: | Article published / in press |
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