Multiple melt bodies fed the AD 2011 eruption of Puyehue-Cordón Caulle, Chile

Show simple item record Alloway, Brent en Pearce, NJG en Villarosa, G en Outes, V en Moreno, PI en 2017-08-09T05:25:37Z en 2015-11-02 en 2015-12-02 en
dc.identifier.citation Scientific Reports, 5:8 pages Article number 17589, 02 Dec 2015 en
dc.identifier.issn 2045-2322 en
dc.identifier.uri en
dc.description.abstract Within the volcanological community there is a growing awareness that many large- to small-scale, point-source eruptive events can be fed by multiple melt bodies rather than from a single magma reservoir. In this study, glass shard major- and trace-element compositions were determined from tephra systematically sampled from the outset of the Puyehue-Cordón Caulle (PCC) eruption (~1 km3) in southern Chile which commenced on June 4th, 2011. Three distinct but cogenetic magma bodies were simultaneously tapped during the paroxysmal phase of this eruption. These are readily identified by clear compositional gaps in CaO, and by Sr/Zr and Sr/Y ratios, resulting from dominantly plagioclase extraction at slightly different pressures, with incompatible elements controlled by zircon crystallisation. Our results clearly demonstrate the utility of glass shard major- and trace-element data in defining the contribution of multiple magma bodies to an explosive eruption. The complex spatial association of the PCC fissure zone with the Liquiñe-Ofqui Fault zone was likely an influential factor that impeded the ascent of the parent magma and allowed the formation of discrete melt bodies within the sub-volcanic system that continued to independently fractionate. en
dc.description.uri en
dc.language English en
dc.publisher Nature Publishing Group en
dc.relation.ispartofseries Scientific Reports en
dc.rights Items in ResearchSpace are protected by copyright, with all rights reserved, unless otherwise indicated. Previously published items are made available in accordance with the copyright policy of the publisher. Details obtained from en
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dc.title Multiple melt bodies fed the AD 2011 eruption of Puyehue-Cordón Caulle, Chile en
dc.type Journal Article en
dc.identifier.doi 10.1038/srep17589 en
pubs.issue 1 en
pubs.volume 5 en
dc.description.version VoR - Version of Record en
dc.rights.holder Copyright: The authors en en
pubs.publication-status Published en
dc.rights.accessrights en
pubs.subtype Article en
pubs.elements-id 628950 en
dc.identifier.eissn 2045-2322 en
pubs.number 17589 en
pubs.record-created-at-source-date 2017-08-09 en 2015-12-02 en

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