The Late Oligocene Nappe Emplacement in the Southeast Anatolian Orogenic Belt

Authors: Ali ELMAS

Abstract: Three major phases of characterized by nappe emplacements have long been known in the Southeast Anatolian orogen. the correspond to the Late-Eocene, Middle Eocene, and Early Miocene. The area to the east of Van Lake displays Upper Lutetian-Upper oligocene olistostromal-turbitis unit intertongued with arc volcanites. They form the basemant together with the Yüksekova group and Lutetian are overlain by nappe which is composed of Upper Cretaceus-Eocene arc volcanic rocks and associated sedimentary rocks at the bottom, and slides including silvers of metamorphic rocks at the top. these allocthon carried above it, the upper Lutetian-Oligocene sedimentary and volcanic rock interclation. After the implacemnet the nappes were unconformably overlain by Uppermost Oligocene-Lower Miocene clactic rocks. The stratigraphical data presented here indicate a previously unknown nappe emplacement place corresponding to the Late Oligocene.

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