Early abyssal- and late SSZ-type vestiges of the Rheic oceanic mantle in the Variscan basement of the Sakarya Zone, NE Turkey: Implications for the sense of subduction and opening of the Paleotethys

► The Pulur and Beyçam peridotites are of abyssal- and SSZ-type vestiges, respectively. ► These vestiges delineate a Rheic suture in the Variscan basement of Turkey. ► Paleotethys was opened in the north behind the terranes separated from Laurussia. ► Trench-ridge collision in the north caused a southward SSZ-type subduction in the south. ► Oceanic vestiges emplaced onto a separated terrane during the trench-SSZ collision.