The western Mediterranean area located in the contact belt between the slowly convergent African and Eurasian plates (Calais et al. 2003; Nocquet and Calais 2004; Serpelloni et al. 2007) has been the site of a continental-scale lithospheric subduction process, the evolution of which in the last 30 million years is marked by the eastward migration of the retreating subduction hinge shown in Figure 1 (Wortel and Spakman 2000). In this framework, the Tyrrhenian Sea formed as an extensional back arc basin that opened during the last 10 million years due to the roll-back of...

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