Collision and Collapse at the Africa-arabia-eurasia by D. J. J. Van Hinsbergen

By D. J. J. Van Hinsbergen

The Mediterranean and northerly Arabian areas supply a different typical laboratory to constrain geodynamics linked to arc-continent and continent-continent collision and next orogenic cave in by means of analysing local and temporal distributions of a number of the parts within the geological archive. This publication combines 13 new contributions that spotlight timing and distribution of the Cretaceous to contemporary evolution of the Calabrian, Carpathian, Aegean and Anatolian segments of the Africa-Arabia-Eurasia subduction quarter. those are subdivided into 5 papers documenting the timing and kinematics of Cretaceous arc-continent collision, and Eocene and Miocene continent-continent collision in Anatolia, with westward extrusion of Anatolia for that reason. 8 papers supply an outline and new facts from stratigraphy, constitution, metamorphism and magmatism, protecting the geological results of the mostly Neogene cave in that characterizes the segments of curiosity, in accordance with overdue level reorganization of the subduction area, and the roll-back and break-off of (segments of) the subducting slab.

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Maastrichtian). Locally, Paleocene sediments are intercalated between the Layered Tectonic Melange and the Ophiolitic Melange, giving a minimum age of amalgamation of these melange units. In the southern part of the Menderes Massif the uppermost levels of the succession, of Early Eocene age, are overlain by the ‘Menderes Margin Melange’. This shows that the final emplacement of this melange post-dates Early Miocene (Collins 1997; Collins & Robertson 1998, 1999). e. initial Late Cretaceous (Maastrichtian) emplacement onto the Tauride carbonate platform, followed by re-thrusting and further southward translation after the Early Eocene (Collins & Robertson 1997; Andrew & Robertson 2002; Mackintosh 2008).

1991; Whitney et al. 2001; Whitney & Davis 2006; MTA 2002). In the south (Fig. 14, A-A0 ) an intact succession, shown as Late Palaeozoic in age on the 1:500 000 map of Turkey (MTA 2002) is exposed on both flanks of a NW–SE-trending mountainous ridge, where it comprises a hundreds-of-metres-thick unit of thick-bedded marble and micaschist, folded along east –west axes, with a locally well-developed stretching lineation. On the northern dip slope, this passes upwards, apparently conformably, into an alternating, soft-weathering sequence of schist and pelite, at least several hundred metres thick.

Partial melting of mantle lithosphere was facilitated by asthenospheric upwelling and thermal perturbation, possibly triggered by oceanic slab break-off. However, this alone is unlikely to have been sufficient to generate large-scale pluton intrusion. The main driving force was clearly regional continental collision of the Tauride and Eurasian plates. However, further consideration of this issue is outside the scope of this paper. Tectonic processes In this discussion we utilize new and published geochemical analysis of basaltic rocks from the Anatolide and Tauride melanges.

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