Deep magma storage during the 2021 La Palma eruption

The 2021 La Palma eruption provided an unpreceded opportunity to test the relationship between earthquake hypocenters and the location of magma reservoirs. We performed density measurements on CO2-rich fluid inclusions (FIs) hosted in olivine crystals that are highly sensitive to pressure via calibr...

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Bibliographic Details
Authors: Dayton, Kyle, Gazel, Esteban, Wieser, Penny, Troll, Valentin R., Carracedo, Juan Carlos, La Madrid, Hector, Roman, Diana C., Ward, Jamison, Aulinas Juncà, Meritxell, Geiger, Harri, Deegan Frances M., Gisbert Pinto, Guillem, Perez-Torrado, Francisco J.
Format: article
Status:Published version
Publication Date:2023
Country:España
Institution:Universidad de Barcelona
Repository:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/195104
Online Access:https://hdl.handle.net/2445/195104
Access Level:Open access
Keyword:Volcans
Erupcions volcàniques
Canàries
Magmatisme
Volcanoes
Volcanic eruptions
Canary Islands
Magmatism
Description
Summary:The 2021 La Palma eruption provided an unpreceded opportunity to test the relationship between earthquake hypocenters and the location of magma reservoirs. We performed density measurements on CO2-rich fluid inclusions (FIs) hosted in olivine crystals that are highly sensitive to pressure via calibrated Raman spectroscopy. This technique can revolutionize our knowledge of magma storage and transport during an ongoing eruption, given that it can produce precise magma storage depth constraints in near real time with minimal sample preparation. Our FIs have CO2 recorded densities from 0.73 to 0.98 g/cm3, translating into depths of 15 to 27 km, which falls within the reported deep seismic zone recording the main melt storage reservoir.

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