Time-window into the transcrustal plumbing system dynamics of Dominica (Lesser Antilles)

Abstract Dominica, one of the most magmatically active islands of the Lesser Antilles through its four active volcanoes, is likely host under its central part, below Morne Trois Pitons–Micotrin, to a well-established transcrustal mush system. Pre-eruptive spatiotemporal magma dynamics are examined f...

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Autores principales:	Lea Ostorero, Georges Boudon, Hélène Balcone-Boissard, Daniel J. Morgan, Thiebaut d’Augustin, Clara Solaro
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/aeb02bb0b18745abbecdf2503a9bc9a2
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spelling	oai:doaj.org-article:aeb02bb0b18745abbecdf2503a9bc9a22021-12-02T17:51:06ZTime-window into the transcrustal plumbing system dynamics of Dominica (Lesser Antilles)10.1038/s41598-021-90831-12045-2322https://doaj.org/article/aeb02bb0b18745abbecdf2503a9bc9a22021-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-90831-1https://doaj.org/toc/2045-2322Abstract Dominica, one of the most magmatically active islands of the Lesser Antilles through its four active volcanoes, is likely host under its central part, below Morne Trois Pitons–Micotrin, to a well-established transcrustal mush system. Pre-eruptive spatiotemporal magma dynamics are examined for five, explosive, pumiceous eruptions of this volcano in the last 24 kyrs through a combined Crystal System Analysis and intracrystalline Fe–Mg interdiffusion timescales modelling approaches. Before all eruptions, two magmatic environments of close compositions have interacted. These interactions began ~ 10–30 years prior to the four smaller of these eruptions, with more sustained mixing in the last decade, accelerated in the last 2 years. This contrasts with the largest pumiceous eruption, involving deeper magmas, with magma interaction starting over roughly a century but with various patterns. This suggests a possibility that increasing reactivation signals could be registered at the surface some years before future eruptions, having significant implications for volcanic risk mitigation.Lea OstoreroGeorges BoudonHélène Balcone-BoissardDaniel J. MorganThiebaut d’AugustinClara SolaroNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-15 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Lea Ostorero Georges Boudon Hélène Balcone-Boissard Daniel J. Morgan Thiebaut d’Augustin Clara Solaro Time-window into the transcrustal plumbing system dynamics of Dominica (Lesser Antilles)
description	Abstract Dominica, one of the most magmatically active islands of the Lesser Antilles through its four active volcanoes, is likely host under its central part, below Morne Trois Pitons–Micotrin, to a well-established transcrustal mush system. Pre-eruptive spatiotemporal magma dynamics are examined for five, explosive, pumiceous eruptions of this volcano in the last 24 kyrs through a combined Crystal System Analysis and intracrystalline Fe–Mg interdiffusion timescales modelling approaches. Before all eruptions, two magmatic environments of close compositions have interacted. These interactions began ~ 10–30 years prior to the four smaller of these eruptions, with more sustained mixing in the last decade, accelerated in the last 2 years. This contrasts with the largest pumiceous eruption, involving deeper magmas, with magma interaction starting over roughly a century but with various patterns. This suggests a possibility that increasing reactivation signals could be registered at the surface some years before future eruptions, having significant implications for volcanic risk mitigation.
format	article
author	Lea Ostorero Georges Boudon Hélène Balcone-Boissard Daniel J. Morgan Thiebaut d’Augustin Clara Solaro
author_facet	Lea Ostorero Georges Boudon Hélène Balcone-Boissard Daniel J. Morgan Thiebaut d’Augustin Clara Solaro
author_sort	Lea Ostorero
title	Time-window into the transcrustal plumbing system dynamics of Dominica (Lesser Antilles)
title_short	Time-window into the transcrustal plumbing system dynamics of Dominica (Lesser Antilles)
title_full	Time-window into the transcrustal plumbing system dynamics of Dominica (Lesser Antilles)
title_fullStr	Time-window into the transcrustal plumbing system dynamics of Dominica (Lesser Antilles)
title_full_unstemmed	Time-window into the transcrustal plumbing system dynamics of Dominica (Lesser Antilles)
title_sort	time-window into the transcrustal plumbing system dynamics of dominica (lesser antilles)
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/aeb02bb0b18745abbecdf2503a9bc9a2
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Time-window into the transcrustal plumbing system dynamics of Dominica (Lesser Antilles)

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