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Seismic velocity structures of southern Italy from tomographic imaging of the Ionian slab and petrological inferences
Language
English
Obiettivo Specifico
2.5. Laboratorio per lo sviluppo di sistemi di rilevamento sottomarini
Status
Published
JCR Journal
JCR Journal
Peer review journal
Yes
Title of the book
Issue/vol(year)
2/191 (2012)
ISSN
0956-540X
Electronic ISSN
1365-246X
Publisher
Wiley-Blackwell
Pages (printed)
751-764
Issued date
2012
Keywords
Abstract
In this study we have determined detailed Vp and Vs seismic velocity models of the Ionian
lithosphere subducting beneath the Tyrrhenian basin and of the surrounding mantle, by applying
a post-processing technique to a large sample of local earthquake tomography studies.
Our seismic velocity models permit us to infer the presence of low velocity anomalies
within the slab, which we interpret as regions that are partially hydrated by fluids released
during the subduction process. A petrological interpretation of the velocity anomalies gives
new details on the magmatism of the volcanic Aeolian arc. Furthermore our velocity models
provide a more detailed description of the boundary of the slab and its connection with the large
seismically active Tindari-Letojanni strike slip system. Finally these results allow describing
in detail some features of the slab as the presence of lateral and vertical tears. In conclusion,
the obtained models provide some constraints for inferences on mantle circulation, and on the
geodynamical evolution of the central-western Mediterranean.
lithosphere subducting beneath the Tyrrhenian basin and of the surrounding mantle, by applying
a post-processing technique to a large sample of local earthquake tomography studies.
Our seismic velocity models permit us to infer the presence of low velocity anomalies
within the slab, which we interpret as regions that are partially hydrated by fluids released
during the subduction process. A petrological interpretation of the velocity anomalies gives
new details on the magmatism of the volcanic Aeolian arc. Furthermore our velocity models
provide a more detailed description of the boundary of the slab and its connection with the large
seismically active Tindari-Letojanni strike slip system. Finally these results allow describing
in detail some features of the slab as the presence of lateral and vertical tears. In conclusion,
the obtained models provide some constraints for inferences on mantle circulation, and on the
geodynamical evolution of the central-western Mediterranean.
Type
article
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