Details
| Original language | English |
|---|---|
| Pages (from-to) | 165-179 |
| Number of pages | 15 |
| Journal | Lithos |
| Volume | 324-325 |
| Early online date | 8 Nov 2018 |
| Publication status | Published - Jan 2019 |
Abstract
We combined literature and experimental data to determine the role of magma mixing in the pre-eruptive dynamics of the Aeolian Islands volcanoes. As a first step, we systematically reviewed the evidence supporting the hypothesis of mixing-triggered eruptions in the Aeolian archipelago, providing textural, chemical, and rheological constraints. The existing data highlighted the significant role of magma mixing in many eruptions within the Aeolian archipelago. Examples include the Upper Pollara and Porri volcano eruptions at Salina, Monte Guardia, and the AD 1230 Monte Pilato eruption at Lipari, as well as the present-day activity at Stromboli. Then, we focused on Vulcano Island, chosen as a case study because it represents one of the volcanoes posing the highest risk in the Aeolian archipelago. At Vulcano Island, we highlighted the role of magma mixing in the AD 1739 and 1888–90 eruptions. Finally, we investigated mixing-to-eruption timescales for the AD 1739 eruption, performing mixing experiments, and evaluated the progressive decay of the chemical concentration variance with time. Results pointed to mixing-to-eruption timescales of the order of 29 ± 9 h and magma ascent rates ranging between 3×10−2 and 5×10−2 m s−1. We finally emphasized that the presented results may have significant implications in the context of volcanic hazard mitigation and planning of emergency activities.
Keywords
- Eruption timescales, Magma mixing, Time series experiments
ASJC Scopus subject areas
- Earth and Planetary Sciences(all)
- Geology
- Earth and Planetary Sciences(all)
- Geochemistry and Petrology
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In: Lithos, Vol. 324-325, 01.2019, p. 165-179.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Role of magma mixing in the pre-eruptive dynamics of the Aeolian Islands volcanoes (Southern Tyrrhenian Sea, Italy)
AU - Rossi, Stefano
AU - Petrelli, Maurizio
AU - Morgavi, Daniele
AU - Vetere, Francesco P.
AU - Almeev, Renat R.
AU - Astbury, Rebecca L.
AU - Perugini, Diego
N1 - Funding information: This research was funded by the European Research Council (ERC) Consolidator Grant ERC-2013-Co-G No. 612776 – CHRONOS to D. Perugini. F. Vetere wishes to acknowledge support from the MIUR-DAAD Joint Mobility Project ( 57262582 ). M. Petrelli wishes to acknowledge support from the University of Perugia , Dipartimento di Fisica e Geologia , “CHALLENGE” FRB 2015 grant. Constructive comments by B. Scaillet and S. Kolzenburg are gratefully acknowledged.
PY - 2019/1
Y1 - 2019/1
N2 - We combined literature and experimental data to determine the role of magma mixing in the pre-eruptive dynamics of the Aeolian Islands volcanoes. As a first step, we systematically reviewed the evidence supporting the hypothesis of mixing-triggered eruptions in the Aeolian archipelago, providing textural, chemical, and rheological constraints. The existing data highlighted the significant role of magma mixing in many eruptions within the Aeolian archipelago. Examples include the Upper Pollara and Porri volcano eruptions at Salina, Monte Guardia, and the AD 1230 Monte Pilato eruption at Lipari, as well as the present-day activity at Stromboli. Then, we focused on Vulcano Island, chosen as a case study because it represents one of the volcanoes posing the highest risk in the Aeolian archipelago. At Vulcano Island, we highlighted the role of magma mixing in the AD 1739 and 1888–90 eruptions. Finally, we investigated mixing-to-eruption timescales for the AD 1739 eruption, performing mixing experiments, and evaluated the progressive decay of the chemical concentration variance with time. Results pointed to mixing-to-eruption timescales of the order of 29 ± 9 h and magma ascent rates ranging between 3×10−2 and 5×10−2 m s−1. We finally emphasized that the presented results may have significant implications in the context of volcanic hazard mitigation and planning of emergency activities.
AB - We combined literature and experimental data to determine the role of magma mixing in the pre-eruptive dynamics of the Aeolian Islands volcanoes. As a first step, we systematically reviewed the evidence supporting the hypothesis of mixing-triggered eruptions in the Aeolian archipelago, providing textural, chemical, and rheological constraints. The existing data highlighted the significant role of magma mixing in many eruptions within the Aeolian archipelago. Examples include the Upper Pollara and Porri volcano eruptions at Salina, Monte Guardia, and the AD 1230 Monte Pilato eruption at Lipari, as well as the present-day activity at Stromboli. Then, we focused on Vulcano Island, chosen as a case study because it represents one of the volcanoes posing the highest risk in the Aeolian archipelago. At Vulcano Island, we highlighted the role of magma mixing in the AD 1739 and 1888–90 eruptions. Finally, we investigated mixing-to-eruption timescales for the AD 1739 eruption, performing mixing experiments, and evaluated the progressive decay of the chemical concentration variance with time. Results pointed to mixing-to-eruption timescales of the order of 29 ± 9 h and magma ascent rates ranging between 3×10−2 and 5×10−2 m s−1. We finally emphasized that the presented results may have significant implications in the context of volcanic hazard mitigation and planning of emergency activities.
KW - Eruption timescales
KW - Magma mixing
KW - Time series experiments
UR - http://www.scopus.com/inward/record.url?scp=85056768725&partnerID=8YFLogxK
U2 - 10.1016/j.lithos.2018.11.004
DO - 10.1016/j.lithos.2018.11.004
M3 - Article
AN - SCOPUS:85056768725
VL - 324-325
SP - 165
EP - 179
JO - Lithos
JF - Lithos
SN - 0024-4937
ER -