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Coexisting geodynamic processes in the Sicily Channel

By
Giacomo Corti
Giacomo Corti
Istituto di Geoscienze e Georisorse, CNR, Pisa, Italy
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Marco Cuffaro
Marco Cuffaro
Dipartimento di Scienze della Terra, Università La Sapienza, Roma, Italy
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Carlo Doglioni
Carlo Doglioni
Dipartimento di Scienze della Terra, Università La Sapienza, Roma, Italy
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Fabrizio Innocenti
Fabrizio Innocenti
Dipartimento di Scienze della Terra, Università di Pisa, and IGG-CNR Pisa, Italy
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Piero Manetti
Piero Manetti
Istituto di Geoscienze e Georisorse, CNR, Pisa, Italy
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Published:
January 01, 2006

The northwestern side of the Sicily Channel in the central Mediterranean has been shaped by the occurrence of two independent tectonic processes that overlap each other, the Maghrebides-Apennines accretionary prism and the Sicily Channel rift. Since at least the Pliocene, these two processes have acted simultaneously, being respectively related to the Apennines subduction and to the African rift. Thrust sheets of the accretionary prism crosscut the almost orthogonal rift-related normal faults and vice versa. Analog modeling supports the kinematics inferred from regional structural data. Alkaline magmatism associated with the rift is more pronounced in the foreland of the prism, where the extension is more concentrated. This peculiar setting confirms how independently geodynamic processes can interact in the same area at the same time, suggesting that plate boundaries are passive features responding to far-field velocity fields of the lithosphere.

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GSA Special Papers

Postcollisional Tectonics and Magmatism in the Mediterranean Region and Asia

Yildirim Dilek
Yildirim Dilek
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Spyros Pavlides
Spyros Pavlides
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Geological Society of America
Volume
409
ISBN print:
9780813724096
Publication date:
January 01, 2006

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