Magma recharge and mush rejuvenation drive paroxysmal activity at Stromboli volcano

Maria Petrone, Chiara; Mollo, Silvio; Gertisser, Ralf; Buret, Yannick; Scarlato, Piergiorgio; Del Bello, Elisabetta; Andronico, Daniele; Ellis, Ben; Pontesilli, Alessio; De Astis, Gianfilippo; Paolo Giacomoni, Pier; Coltorti, Massimo; Reagan, Mark

doi:10.1038/s41467-022-35405-z

Magma recharge and mush rejuvenation drive paroxysmal activity at Stromboli volcano

Maria Petrone, Chiara; Mollo, Silvio; Gertisser, Ralf; Buret, Yannick; Scarlato, Piergiorgio; Del Bello, Elisabetta; Andronico, Daniele; Ellis, Ben; Pontesilli, Alessio; De Astis, Gianfilippo; Paolo Giacomoni, Pier; Coltorti, Massimo; Reagan, Mark

Authors

Chiara Maria Petrone

Silvio Mollo

Dr Ralf Gertisser r.gertisser@keele.ac.uk

Yannick Buret

Piergiorgio Scarlato

Elisabetta Del Bello

Daniele Andronico

Ben Ellis

Alessio Pontesilli

Gianfilippo De Astis

Pier Paolo Giacomoni

Massimo Coltorti

Mark Reagan

Abstract

Open-conduit basaltic volcanoes can be characterised by sudden large explosive events (paroxysms) that interrupt normal effusive and mild explosive activity. In June-August 2019, one major explosion and two paroxysms occurred at Stromboli volcano (Italy) within only 64 days. Here, via a multifaceted approach using clinopyroxene, we show arrival of mafic recharges up to a few days before the onset of these events and their effects on the eruption pattern at Stromboli, as a prime example of a persistently active, open-conduit basaltic volcano. Our data indicate a rejuvenated Stromboli plumbing system where the extant crystal mush is efficiently permeated by recharge magmas with minimum remobilisation promoting a direct linkage between the deeper and the shallow reservoirs that sustains the currently observed larger variability of eruptive behaviour. Our approach provides vital insights into magma dynamics and their effects on monitoring signals demonstrating the power of petrological studies in interpreting patterns of surficial activity.

Journal Article Type	Article
Acceptance Date	Nov 30, 2022
Publication Date	Dec 13, 2022
Journal	Nature Communications
Print ISSN	2041-1723
Volume	13
Issue	1
Article Number	7717
DOI	https://doi.org/10.1038/s41467-022-35405-z
Publisher URL	https://www.nature.com/articles/s41467-022-35405-z