Around the Balkan Peninsula, the African plate is sinking beneath the European plate. A piece of deeply submerged African crust resurfaced 40 million years ago far away from the sinking zone. How this phenomenon of so-called vertical extrusion can be explained and whether the Rhodope mountain range in southern Bulgaria was formed in this way is a matter of scientific debate. Dr. Iskander Muldashev and Professor Thorsten Nagel from the TU Bergakademie Freiberg have now shown how this process works in a recent publication in the journal Geology. The formation of the Rhodopes was only 40 million years ago—the mountain range is therefore 30–50 million years younger than previously assumed.
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