Explosive eruptive history of Pantelleria, Italy: Repeated caldera collapseand ignimbrite emplacement at a peralkaline volcano

Silvio Giuseppe Rotolo, Nina J. Jordan, Rebecca Williams, Silvio G. Rotolo, Michael J. Branney, Stéphane Scaillet, Fabio Speranza, William C. Mcintosh

Risultato della ricerca: Article

5 Citazioni (Scopus)

Abstract

A new, pre-Green Tuff (46 ka) volcanic stratigraphy is presented for the peralkaline Pantelleria Volcano, Italy.New 40Ar/39Ar and paleomagnetic data are combined with detailed field studies to develop a comprehensivestratigraphic reconstruction of the island.We find that the pre-46 ka succession is characterised by eight silicarichperalkaline (trachyte to pantellerite) ignimbrites,many ofwhich blanketed the entire island. The ignimbritesare typically welded to rheomorphic, and are commonly associated with lithic breccias and/or pumice deposits.They record sustained radial pyroclastic density currents fed by lowpyroclastic fountains. The onset of ignimbriteemplacement is typically preceded (more rarely followed) by pumice fallout with limited dispersal, and someeruptions lack any associated pumice fall deposit, suggesting the absence of tall eruption columns. Particular attentionis given to the correlation of well-developed lithic breccias in the ignimbrites, interpreted as probabletracers of caldera collapses. They record as many as five caldera collapse events, in contrast to the two events reportedto date. Inter-ignimbrite periods are characterised by explosive and effusive eruptions with limited dispersal,such as small pumice cones, as well as pedogenesis. These periods have similar characteristics as thecurrent post-Green Tuff activity on the island, and, while not imminent, it is reasonable to postulate the occurrenceof another ignimbrite-forming eruption sometime in the future.© 2017 Elsevier B.V. All rights reserved.
Lingua originaleEnglish
pagine (da-a)47-73
Numero di pagine27
RivistaDefault journal
Volume349
Stato di pubblicazionePublished - 2018

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pumice
Volcanoes
calderas
igneous rocks
ignimbrite
caldera
Italy
volcanoes
explosive
emplacement
volcano
histories
volcanic eruptions
volcanic eruption
history
tuff
Deposits
deposits
trachyte
Fallout

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Geochemistry and Petrology

Cita questo

Rotolo, S. G., Jordan, N. J., Williams, R., Rotolo, S. G., Branney, M. J., Scaillet, S., ... Mcintosh, W. C. (2018). Explosive eruptive history of Pantelleria, Italy: Repeated caldera collapseand ignimbrite emplacement at a peralkaline volcano. Default journal, 349, 47-73.

Explosive eruptive history of Pantelleria, Italy: Repeated caldera collapseand ignimbrite emplacement at a peralkaline volcano. / Rotolo, Silvio Giuseppe; Jordan, Nina J.; Williams, Rebecca; Rotolo, Silvio G.; Branney, Michael J.; Scaillet, Stéphane; Speranza, Fabio; Mcintosh, William C.

In: Default journal, Vol. 349, 2018, pag. 47-73.

Risultato della ricerca: Article

Rotolo, SG, Jordan, NJ, Williams, R, Rotolo, SG, Branney, MJ, Scaillet, S, Speranza, F & Mcintosh, WC 2018, 'Explosive eruptive history of Pantelleria, Italy: Repeated caldera collapseand ignimbrite emplacement at a peralkaline volcano', Default journal, vol. 349, pagg. 47-73.
Rotolo, Silvio Giuseppe ; Jordan, Nina J. ; Williams, Rebecca ; Rotolo, Silvio G. ; Branney, Michael J. ; Scaillet, Stéphane ; Speranza, Fabio ; Mcintosh, William C. / Explosive eruptive history of Pantelleria, Italy: Repeated caldera collapseand ignimbrite emplacement at a peralkaline volcano. In: Default journal. 2018 ; Vol. 349. pagg. 47-73.
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abstract = "A new, pre-Green Tuff (46 ka) volcanic stratigraphy is presented for the peralkaline Pantelleria Volcano, Italy.New 40Ar/39Ar and paleomagnetic data are combined with detailed field studies to develop a comprehensivestratigraphic reconstruction of the island.We find that the pre-46 ka succession is characterised by eight silicarichperalkaline (trachyte to pantellerite) ignimbrites,many ofwhich blanketed the entire island. The ignimbritesare typically welded to rheomorphic, and are commonly associated with lithic breccias and/or pumice deposits.They record sustained radial pyroclastic density currents fed by lowpyroclastic fountains. The onset of ignimbriteemplacement is typically preceded (more rarely followed) by pumice fallout with limited dispersal, and someeruptions lack any associated pumice fall deposit, suggesting the absence of tall eruption columns. Particular attentionis given to the correlation of well-developed lithic breccias in the ignimbrites, interpreted as probabletracers of caldera collapses. They record as many as five caldera collapse events, in contrast to the two events reportedto date. Inter-ignimbrite periods are characterised by explosive and effusive eruptions with limited dispersal,such as small pumice cones, as well as pedogenesis. These periods have similar characteristics as thecurrent post-Green Tuff activity on the island, and, while not imminent, it is reasonable to postulate the occurrenceof another ignimbrite-forming eruption sometime in the future.{\circledC} 2017 Elsevier B.V. All rights reserved.",
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author = "Rotolo, {Silvio Giuseppe} and Jordan, {Nina J.} and Rebecca Williams and Rotolo, {Silvio G.} and Branney, {Michael J.} and St{\'e}phane Scaillet and Fabio Speranza and Mcintosh, {William C.}",
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T1 - Explosive eruptive history of Pantelleria, Italy: Repeated caldera collapseand ignimbrite emplacement at a peralkaline volcano

AU - Rotolo, Silvio Giuseppe

AU - Jordan, Nina J.

AU - Williams, Rebecca

AU - Rotolo, Silvio G.

AU - Branney, Michael J.

AU - Scaillet, Stéphane

AU - Speranza, Fabio

AU - Mcintosh, William C.

PY - 2018

Y1 - 2018

N2 - A new, pre-Green Tuff (46 ka) volcanic stratigraphy is presented for the peralkaline Pantelleria Volcano, Italy.New 40Ar/39Ar and paleomagnetic data are combined with detailed field studies to develop a comprehensivestratigraphic reconstruction of the island.We find that the pre-46 ka succession is characterised by eight silicarichperalkaline (trachyte to pantellerite) ignimbrites,many ofwhich blanketed the entire island. The ignimbritesare typically welded to rheomorphic, and are commonly associated with lithic breccias and/or pumice deposits.They record sustained radial pyroclastic density currents fed by lowpyroclastic fountains. The onset of ignimbriteemplacement is typically preceded (more rarely followed) by pumice fallout with limited dispersal, and someeruptions lack any associated pumice fall deposit, suggesting the absence of tall eruption columns. Particular attentionis given to the correlation of well-developed lithic breccias in the ignimbrites, interpreted as probabletracers of caldera collapses. They record as many as five caldera collapse events, in contrast to the two events reportedto date. Inter-ignimbrite periods are characterised by explosive and effusive eruptions with limited dispersal,such as small pumice cones, as well as pedogenesis. These periods have similar characteristics as thecurrent post-Green Tuff activity on the island, and, while not imminent, it is reasonable to postulate the occurrenceof another ignimbrite-forming eruption sometime in the future.© 2017 Elsevier B.V. All rights reserved.

AB - A new, pre-Green Tuff (46 ka) volcanic stratigraphy is presented for the peralkaline Pantelleria Volcano, Italy.New 40Ar/39Ar and paleomagnetic data are combined with detailed field studies to develop a comprehensivestratigraphic reconstruction of the island.We find that the pre-46 ka succession is characterised by eight silicarichperalkaline (trachyte to pantellerite) ignimbrites,many ofwhich blanketed the entire island. The ignimbritesare typically welded to rheomorphic, and are commonly associated with lithic breccias and/or pumice deposits.They record sustained radial pyroclastic density currents fed by lowpyroclastic fountains. The onset of ignimbriteemplacement is typically preceded (more rarely followed) by pumice fallout with limited dispersal, and someeruptions lack any associated pumice fall deposit, suggesting the absence of tall eruption columns. Particular attentionis given to the correlation of well-developed lithic breccias in the ignimbrites, interpreted as probabletracers of caldera collapses. They record as many as five caldera collapse events, in contrast to the two events reportedto date. Inter-ignimbrite periods are characterised by explosive and effusive eruptions with limited dispersal,such as small pumice cones, as well as pedogenesis. These periods have similar characteristics as thecurrent post-Green Tuff activity on the island, and, while not imminent, it is reasonable to postulate the occurrenceof another ignimbrite-forming eruption sometime in the future.© 2017 Elsevier B.V. All rights reserved.

KW - Peralkaline volcanism Pantelleria Ignimbrites Caldera collapse Eruptive history 40Ar/39Ar dating

UR - http://hdl.handle.net/10447/248316

UR - https://www.sciencedirect.com/science/article/pii/S0377027317300781

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VL - 349

SP - 47

EP - 73

JO - Default journal

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