TY - JOUR
T1 - Seismic velocity structures of Southern Italy from tomographic imaging of the Ionian slab and petrological inferences
AU - Rotolo, Silvio Giuseppe
AU - Luzio, Dario
AU - Calò, Marco
AU - Dorbath, null
AU - Rotolo, null
AU - Luzio, Dario
AU - D'Anna, Giuseppe
PY - 2012
Y1 - 2012
N2 - In this study we have determined detailed Vp and Vs seismic velocity models of the Ionianlithosphere subducting beneath the Tyrrhenian basin and of the surrounding mantle, by applyinga 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 anomalieswithin the slab, which we interpret as regions that are partially hydrated by fluids releasedduring the subduction process. A petrological interpretation of the velocity anomalies givesnew details on the magmatism of the volcanic Aeolian arc. Furthermore our velocity modelsprovide a more detailed description of the boundary of the slab and its connection with the largeseismically active Tindari-Letojanni strike slip system. Finally these results allow describingin 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 thegeodynamical evolution of the central-western Mediterranean.
AB - In this study we have determined detailed Vp and Vs seismic velocity models of the Ionianlithosphere subducting beneath the Tyrrhenian basin and of the surrounding mantle, by applyinga 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 anomalieswithin the slab, which we interpret as regions that are partially hydrated by fluids releasedduring the subduction process. A petrological interpretation of the velocity anomalies givesnew details on the magmatism of the volcanic Aeolian arc. Furthermore our velocity modelsprovide a more detailed description of the boundary of the slab and its connection with the largeseismically active Tindari-Letojanni strike slip system. Finally these results allow describingin 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 thegeodynamical evolution of the central-western Mediterranean.
KW - Rheology: crust and lithosphere.
KW - Seismic tomography
KW - Subduction zone processes
KW - Rheology: crust and lithosphere.
KW - Seismic tomography
KW - Subduction zone processes
UR - http://hdl.handle.net/10447/66615
M3 - Article
VL - 91
SP - 751
EP - 764
JO - Geophysical Journal International
JF - Geophysical Journal International
SN - 0956-540X
ER -