The Antalya Complex in southwestern Turkey lies along the Cyprus-Hatay ophiolitic belt of the Eastern Mediterranean. The Antalya Complex contains, from west to east, the autochthonous Mesozoic-Cenozoic platform carbonates of the Bey Daglari massif and three allochthonous units: the Kumluca Complex of imbricate Mesozoic continental-margin sedimentary rocks; the Alakir Cay unit, a mélange of oceanic and carbonate margin rocks; and the Late Cretaceous Tekirova (partial) ophiolite.One of the allochthonous units, the Alakir (Jay, is interpreted here as a mélange. The Alakir Cav unit contains a great variety of clasts, derived from continental margin to pelagic environments. Ophiolitic rocks are the most conspicuous component. The matrix varies from pelagic marls to pillow-basalt flows and serpentinite and is essentially absent locally. The Alakir (Jay mélange contains ophiolitic debris of probable Late Cretaceous age and is overlain by a conglomerate sequence with clasts containing a Maestrichtian fauna.The Alakir (Jay mélange formed during obduction in front of advancing ophiolite sheets, thrust over a relatively flat foreland of the Kumluca continental margin. The initiation of deformation is assumed to be a result of thrusting related to compression. The mélange movement took place as submarine slides that successively occupied flysch basins developed in front of the advancing thrust mass during Late Cretaceous time. The Alakir (Jay mélange was emplaced on the Bey Daglari autochthon during the late Miocene.on July 14, 2015 specialpapers.gsapubs.org Downloaded from
Summary The Antalya Complex of southwestern Turkey contains, from west to east, the autochthonous Mesozoic-Cenozoic platform carbonates of the Bey Daǧları massif and three allochthonous units: the Kumluca complex of imbricated Mesozoic continentalmargin sedimentary rocks; units of the Late Cretaceous Alakır Çay ophiolite sequence and the Late Cretaceous Tekirova partial ophiolite sequence; and the Teke-Tahtalı Daǧ unit of Palaeozoic-Mesozoic sedimentary rocks originating on continental crust. The allochthonous units are overlain by conglomerates containing Maastrichtian clasts, ophiolitic olistostromes and locally by pelagic marls bearing Lower Miocene foraminifera. Samples from the Alakır Çay and Tekirova ophiolites have been isotopically dated. These ages cluster in the latest Cretaceous. Fossils from pelagic sediments interbedded with pillowed basalt flows yielded ages of Late Triassic-Jurassic and Late Jurassic-Early Cretaceous, indicating intermittent volcanic activity through Mesozoic time. It is believed that the ophiolites of the Alakır Çay and Tekirova unit were formed in the same basin but were emplaced during separate events.
Throughout time, the greater Caspian area has maintained its position as one of the major petroleum provinces in the world. Its early history as a prolific producer of oil is well known. Caspian region exploration dates to the seventh century B.C., during the time of the Median Kingdom in today's southern Azerbaijan. Oil played an important role in the everyday lives of these ancient tribes of the region, and it is still a very important commodity today. The past two decades have seen many important advances in our knowledge of the geological evolution of hydrocarbon-bearing sedimentary basins. The success of modern exploration is, to a large extent, based on new advances in both deep and 3-D seismic imaging, as well as improved pressure-prediction and pre-drill oil and gas quality predictive methodologies, to mention just a few. Nevertheless, large areas of the greater Caspian region have remained unexplored due to a variety of factors such as deep-water conditions and zones with high pore-pressures in the South Caspian Sea and The Black Sea, and vast shallow-water regions with harsh winter ice conditions in the North Caspian Sea. This publication contains 12 extended abstracts and 6 full-length papers that discuss technology development, challenges in estimating proven and potential reserves, outcrop-based studies of potential reservoirs, regional tectonics and geodynamic evolution, and source rock and stratigraphic analyses of the greater Caspian area.
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