Fe-rich filamentary textures reveal timescales of magmatic interaction before the onset of high-energy explosive events at basaltic volcanoes
Fe-rich filamentary textures are almost ubiquitous in products from explosive eruptions at basaltic volcanoes and, in particular, they characterize the groundmass of ash and lapilli emitted during high-energy events. Here, we present a multidisciplinary study integrating petrological analyses with c...
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Volcanica
2025-03-01
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| Series: | Volcanica |
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| Online Access: | https://www.jvolcanica.org/ojs/index.php/volcanica/article/view/330 |
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| author | Claudia D'Oriano Chiara Montagna Simone Colucci Paola Del Carlo Federico Brogi Daniele Morgavi Alessandro Musu Fabio Arzilli Simone Costa Patrizia Landi |
| author_facet | Claudia D'Oriano Chiara Montagna Simone Colucci Paola Del Carlo Federico Brogi Daniele Morgavi Alessandro Musu Fabio Arzilli Simone Costa Patrizia Landi |
| author_sort | Claudia D'Oriano |
| collection | DOAJ |
| description | Fe-rich filamentary textures are almost ubiquitous in products from explosive eruptions at basaltic volcanoes and, in particular, they characterize the groundmass of ash and lapilli emitted during high-energy events. Here, we present a multidisciplinary study integrating petrological analyses with computational fluid dynamics simulations to propose a new mechanism responsible for their formation. Detailed textural and compositional features of Fe-rich filaments were examined in the products of explosive eruptions with different intensities from Stromboli and Etna (Italy) volcanoes. Results reveal that they represent compositional boundary layers developed at the plagioclase-melt interface in response to the interaction between magmas with different compositions and volatile contents. Numerical simulations indicate that boundary layers can detach from crystals and disperse into resident melts due to their higher density and can survive as metastable melts for some days under magmatic conditions. We suggest that Fe-rich filaments testify to the recharging of deep magma a few days before high-energy explosive events at basaltic open-vent volcanoes, even when primitive magmas are not erupted. |
| format | Article |
| id | doaj-art-c3455fc8e58a40ceb7c9c334ee9d0a2b |
| institution | OA Journals |
| issn | 2610-3540 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Volcanica |
| record_format | Article |
| series | Volcanica |
| spelling | doaj-art-c3455fc8e58a40ceb7c9c334ee9d0a2b2025-08-20T01:50:26ZengVolcanicaVolcanica2610-35402025-03-018115917410.30909/vol/wytv2139315Fe-rich filamentary textures reveal timescales of magmatic interaction before the onset of high-energy explosive events at basaltic volcanoesClaudia D'Oriano0https://orcid.org/0000-0003-2237-5121Chiara Montagna1https://orcid.org/0000-0001-6884-8401Simone Colucci2https://orcid.org/0000-0003-0580-5775Paola Del Carlo3https://orcid.org/0000-0001-5506-4579Federico Brogi4https://orcid.org/0000-0001-5223-6929Daniele Morgavi5Alessandro Musu6https://orcid.org/0000-0001-5354-5782Fabio Arzilli7https://orcid.org/0000-0002-5293-7300Simone Costa8https://orcid.org/0000-0003-2268-2906Patrizia Landi9https://orcid.org/0000-0002-8463-5710Istituto Nazionale di Geofisica e Vulcanologia, Sezione di Pisa, Via Cesare Battisti 53, 56125 Pisa, ItalyIstituto Nazionale di Geofisica e Vulcanologia, Sezione di Pisa, Via Cesare Battisti 53, 56125 Pisa, ItalyIstituto Nazionale di Geofisica e Vulcanologia, Sezione di Pisa, Via Cesare Battisti 53, 56125 Pisa, ItalyIstituto Nazionale di Geofisica e Vulcanologia, Sezione di Pisa, Via Cesare Battisti 53, 56125 Pisa, ItalyIstituto Nazionale di Geofisica e Vulcanologia, Sezione di Pisa, Via Cesare Battisti 53, 56125 Pisa, ItalyDipartimento di Scienze della Terra, dell'Ambiente e delle Risorse, Università degli Studi di Napoli Federico II, via Cintia, 21, 80126 Napoli, ItalyDepartment of Earth Science, University of Perugia, Via Alessandro Pascoli, s.n.c. 06123 Perugia, ItalySchool of Science and Technology, Geology Division, University of Camerino, Via Gentile III da Varano, 7, 62032 Camerino, ItalyIstituto Nazionale di Geofisica e Vulcanologia, Sezione di Pisa, Via Cesare Battisti 53, 56125 Pisa, ItalyIstituto Nazionale di Geofisica e Vulcanologia, Sezione di Pisa, Via Cesare Battisti 53, 56125 Pisa, ItalyFe-rich filamentary textures are almost ubiquitous in products from explosive eruptions at basaltic volcanoes and, in particular, they characterize the groundmass of ash and lapilli emitted during high-energy events. Here, we present a multidisciplinary study integrating petrological analyses with computational fluid dynamics simulations to propose a new mechanism responsible for their formation. Detailed textural and compositional features of Fe-rich filaments were examined in the products of explosive eruptions with different intensities from Stromboli and Etna (Italy) volcanoes. Results reveal that they represent compositional boundary layers developed at the plagioclase-melt interface in response to the interaction between magmas with different compositions and volatile contents. Numerical simulations indicate that boundary layers can detach from crystals and disperse into resident melts due to their higher density and can survive as metastable melts for some days under magmatic conditions. We suggest that Fe-rich filaments testify to the recharging of deep magma a few days before high-energy explosive events at basaltic open-vent volcanoes, even when primitive magmas are not erupted.https://www.jvolcanica.org/ojs/index.php/volcanica/article/view/330fe-rich filamentsbasaltic volcanoestimescalesmicro-texturesgeochemistrymagmatic interaction |
| spellingShingle | Claudia D'Oriano Chiara Montagna Simone Colucci Paola Del Carlo Federico Brogi Daniele Morgavi Alessandro Musu Fabio Arzilli Simone Costa Patrizia Landi Fe-rich filamentary textures reveal timescales of magmatic interaction before the onset of high-energy explosive events at basaltic volcanoes Volcanica fe-rich filaments basaltic volcanoes timescales micro-textures geochemistry magmatic interaction |
| title | Fe-rich filamentary textures reveal timescales of magmatic interaction before the onset of high-energy explosive events at basaltic volcanoes |
| title_full | Fe-rich filamentary textures reveal timescales of magmatic interaction before the onset of high-energy explosive events at basaltic volcanoes |
| title_fullStr | Fe-rich filamentary textures reveal timescales of magmatic interaction before the onset of high-energy explosive events at basaltic volcanoes |
| title_full_unstemmed | Fe-rich filamentary textures reveal timescales of magmatic interaction before the onset of high-energy explosive events at basaltic volcanoes |
| title_short | Fe-rich filamentary textures reveal timescales of magmatic interaction before the onset of high-energy explosive events at basaltic volcanoes |
| title_sort | fe rich filamentary textures reveal timescales of magmatic interaction before the onset of high energy explosive events at basaltic volcanoes |
| topic | fe-rich filaments basaltic volcanoes timescales micro-textures geochemistry magmatic interaction |
| url | https://www.jvolcanica.org/ojs/index.php/volcanica/article/view/330 |
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