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Journal of the Geological Society; 2008; v. 165; issue.5; p. 883-886;
DOI: 10.1144/0016-76492008-002
© 2008 Geological Society of London

Short Communication

Dyke emplacement and related hazard in volcanoes with sector collapse: the 2007 Stromboli (Italy) eruption

M. NERI1, G. LANZAFAME1 & V. ACOCELLA2

1 Istituto Nazionale di Geofisica e Vulcanologia, Piazza Roma 2, 95123 Catania, Italy (e-mail: neri{at}ct.ingv.it)
2 Dipartimento Scienze Geologiche Roma Tre, L.S.L. Murialdo 1, 00146 Roma, Italy

In February 2007, two effusive vents opened along the flank of Sciara del Fuoco depression at Stromboli. The summit craters collapsed, obstructing the central conduit, choking the vents and increasing the deformation within Sciara del Fuoco. Here a new vent opened, releasing the excess magmatic pressure. The eruption continued, after a summit explosion, until April. The vents were fed by laterally propagating dykes. Vent location is similar to that of the 2002–2003 eruption; that eruption was fed by dykes triggering landslides, which in turn produced a tsunami. However, the 2007 eruption did not develop landslides, suggesting that their triggering also depends on other factors (i.e. magmatic pressure).





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V. ZANON, M. NERI, and E. PECORA
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Geological Magazine, 2009; 146: 591 - 601.
[Abstract] [Full Text] [PDF]