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Full-Text Articles in Physical Sciences and Mathematics
Paleoecological Investigation Of The Miocene (23.03-5.33 Mya) Rodents (Mammalia: Rodentia) In Anatolia, Hasan Vural, Şakir Önder Özkurt
Paleoecological Investigation Of The Miocene (23.03-5.33 Mya) Rodents (Mammalia: Rodentia) In Anatolia, Hasan Vural, Şakir Önder Özkurt
Bulletin of the Mineral Research and Exploration
Anatolia’s geographical location as a land bridge between Europe, Asia, and Africa, makes it an important passage for mammal migrations, with a rich fossil potential. However, detailed scientific studies on the Neogene paleogeography of Anatolia are scarce. Rodentia is among the major mammal groups generally adapting to different habitat types and rapidly evolving with the changing geography. Investigating this group provides data to increase the accuracy of ecological analyses. We selected Rodentia fossils from the Miocene excavation sites with published papers, and examined specimens of 14 families from 106 localities. Cricetidae, Muridae, Gliridae, and Sciuridae were found to be most …
New Geodetic Constraints On The Role Of Faults And Blocks Vs. Distribute Strain In The Nubia-Arabia-Eurasia Zone Of Active Plate Interactions, Semi̇h Ergi̇ntav, Michael Floyd, Demitris Paradissis, Hayrullah Karabulut, Philippe Vernant, Frederic Masson, Ivan Georgiev, Ali̇ Özgün Konca, Uğur Doğan, Robert King, Robert Reilinger
New Geodetic Constraints On The Role Of Faults And Blocks Vs. Distribute Strain In The Nubia-Arabia-Eurasia Zone Of Active Plate Interactions, Semi̇h Ergi̇ntav, Michael Floyd, Demitris Paradissis, Hayrullah Karabulut, Philippe Vernant, Frederic Masson, Ivan Georgiev, Ali̇ Özgün Konca, Uğur Doğan, Robert King, Robert Reilinger
Turkish Journal of Earth Sciences
We present a broad view of present-day motions and deformations derived from uniform processing of GNSS observations within the Nubia-Arabia-Eurasia zone of plate interaction. The new observations we present provide a ~29% increase in the number of velocity determinations, a reduction in average station spacing from ~76 km to ~39 km, and an improvement in velocity uncertainties (for < 1 mm/year), from 180 to 578 sites compared to our prior published solution (Reilinger et al., 2006). We use these new constraints to better evaluate the role of faults and blocks in controlling the character of continental deformation within the zone of plate interactions. Simple elastic block models show that internal deformation of the region occurs in large part on mapped, seismically active fault systems, indicating elastic behavior of the seismogenic crust (above ~15 km). For example, eastern central Anatolia, an area of > ~126,000 km2, bounded by the North and East Anatolian Faults exhibits internal velocity differences of < 0.5 mm/year, indicating strain rates of < ~1.5 nanostrain/year. Geodetically constrained fault slip rates obtained from this simplified approach are comparable to geologic rates, indicating that major faults have controlled the recent geologic evolution of the region (i.e. 5?10 Myr). The pattern of present-day deformation, including increasingly fast motions towards the Hellenic trench, and the roughly simultaneous opening of all the major Mediterranean basins in the early Miocene with the slowing of the Nubia-Eurasia convergence, support conceptual models that foundering and rollback of the subducted Nubian slab beneath the Aegean is the primary mechanism responsible for present-day motion and internal deformation of the Anatolian-Aegean region.
Internal Deformation Of Continental Blocks Within Converging Plates: Insights From The Ovacık Fault (Anatolia, Türkiye), Cengi̇z Zabci, Taylan Sançar, Dmitry Tikhomirov, Susan Ivy-Ochs, Christof Vockenhuber, Anke M. Friedrich, Müge Yazici, Naki̇ Akçar
Internal Deformation Of Continental Blocks Within Converging Plates: Insights From The Ovacık Fault (Anatolia, Türkiye), Cengi̇z Zabci, Taylan Sançar, Dmitry Tikhomirov, Susan Ivy-Ochs, Christof Vockenhuber, Anke M. Friedrich, Müge Yazici, Naki̇ Akçar
Turkish Journal of Earth Sciences
The active tectonics of Anatolia is mostly characterized by its westward motion with respect to Eurasia between the Hellenic subduction in the west and Arabia-Eurasia continental collision in the east. Although most of the deformation is suggested to be confined along Anatolia?s boundary elements, viz. the North and East Anatolian shear zones, recent studies indicate a higher magnitude of internal strain accumulation, especially along the parallel/subparallel strike-slip faults of its central province. We present the first morphochronology-based slip rate estimate for one of these strike-slip structures, the Ovacık Fault, by using cosmogenic 36Cl dating of offset fluvial deposits. At the …
Early Pliocene Arvicolinae And Cricetinae From The Locality Of Afşar, Western Turkey, Panagiotis Skandalos, Koen Lansing, Fatma Arzu Demi̇rel, Mehmet Ci̇hat Alçi̇çek, Serdar Mayda, Francien Dieleman, Lars W. Van Den Hoek Ostende
Early Pliocene Arvicolinae And Cricetinae From The Locality Of Afşar, Western Turkey, Panagiotis Skandalos, Koen Lansing, Fatma Arzu Demi̇rel, Mehmet Ci̇hat Alçi̇çek, Serdar Mayda, Francien Dieleman, Lars W. Van Den Hoek Ostende
Turkish Journal of Earth Sciences
The Afşar section, situated in the Dombayova graben in western Turkey, is one of the key localities for the study of the Pliocene of Anatolia. Two fossiliferous layers yielded micromammal assemblages, including various cricetine and arvicoline species. These include the species Mimomys cf. gracilis, Pliomys sp., Arvicolinae gen. sp. and the cricetines Cricetulus cf. ehiki and Cricetulus sp. in Afşar 1 and Mimomys hassiacus, M. gracilis, Pliomys graecus and Mesocricetus primitivus in Afşar 2. The cooccurence of these species indicates a dry and open spaced habitat. Based on the composition and stage of evolution of the hamster and vole species, …