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Stoping of chamber margins into mafic intrusions: Magma mingling at Soufriere Hills volcano, Montserrat
| Content Provider | Semantic Scholar |
|---|---|
| Author | Genareau, Kimberly Clarke, A. Blayney |
| Copyright Year | 2010 |
| Abstract | In July 2003, the Soufrière Hills volcano (Montserrat, British West Indies) experienced the largest dome collapse event within the history of the current eruption (1995–present). During this event, there were two syn-collapse Vulcanian explosions that deposited tephra throughout the island of Montserrat, and clasts from these fall deposits have been examined texturally and chemically to deduce information concerning conduit dynamics during the dome collapse and contemporaneous explosions. One clast, erupted from Soufrière Hills volcano during the syncollapse Vulcanian explosions of July 13, 2003 reveals several incorporated silicic zones within a vesiculated, more mafic host. In hand sample, this clast appears to show evidence of oxidation possibly resulting from extended residence time within the extruding lava dome. However, closer examination of clast microtextures using scanning electron microscopy (SEM) shows that, in some cases, these characteristics may actually result from processes occurring at depth in the chamber or lower conduit. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://meetingorganizer.copernicus.org/EGU2010/EGU2010-6259.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
