Physical mingling of magma and complex eruption dynamics in the shallow conduit at Stromboli volcano, Italy

Research Article| May 01, 2005 Physical mingling of magma and complex eruption dynamics in the shallow conduit at Stromboli volcano, Italy Nicole C. Lautze; Nicole C. Lautze 1Department of Geology and Geophysics, University of Hawai'i, Honolulu, Hawaii 96822, USA Search for other works by this author on: GSW Google Scholar Bruce F. Houghton Bruce F. Houghton 1Department of Geology and Geophysics, University of Hawai'i, Honolulu, Hawaii 96822, USA Search for other works by this author on: GSW Google Scholar Author and Article Information Nicole C. Lautze 1Department of Geology and Geophysics, University of Hawai'i, Honolulu, Hawaii 96822, USA Bruce F. Houghton 1Department of Geology and Geophysics, University of Hawai'i, Honolulu, Hawaii 96822, USA Publisher: Geological Society of America Received: 02 Nov 2004 Revision Received: 21 Jan 2005 Accepted: 22 Jan 2005 First Online: 02 Mar 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (2005) 33 (5): 425–428. https://doi.org/10.1130/G21325.1 Article history Received: 02 Nov 2004 Revision Received: 21 Jan 2005 Accepted: 22 Jan 2005 First Online: 02 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation Nicole C. Lautze, Bruce F. Houghton; Physical mingling of magma and complex eruption dynamics in the shallow conduit at Stromboli volcano, Italy. Geology 2005;; 33 (5): 425–428. doi: https://doi.org/10.1130/G21325.1 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGeology Search Advanced Search Abstract Strombolian eruptions are caused by the bursting of large gas bubbles through essentially stagnant melt that resides in the uppermost part of the conduit. We investigate the physical properties of this shallow melt via a detailed analysis of vesicularity textures in lapilli ejected during a period of moderate-intensity activity at Stromboli volcano (Italy) in 2002. The lapilli show clear evidence that the erupted material is the product of a late-stage dynamic mingling of melts that are distinct in terms of density and rheology. Vesicle-volume distributions for two end-member melts indicate contrasting degrees of outgassing that can be linked to different residence times in the shallow conduit. We propose a model in which actively vesiculating melt rises with the gas phase and mingles with more mature stagnant melt en route to the magma's free surface. We suggest that the complex rheology of this mingled melt feeds back to strongly influence eruption dynamics. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.