Karabacak et al. have published a study of the surface creep along the North Anatolian Fault in the EPSL. They used a ground-based light detection and ranging (LIDAR) system on an unreported site where three manmade walls across the fault were monitored for 3 yrs between 2007 and 2009. They found that 50–70% of the yearly slip accumulates on the faults creep section. Please find more info here doi:10.1016/j.epsl.2011.01.017
Archive for the ‘Tectonics’ category
A magnitude 7.2 earthquake occurred in eastern Turkey on 23 October 2011 on noon local time. CNN reports that several buildings have collapsed in Van Province.
Uysal et al. 2011 have published a new study about long term seismic cycles recorded in southwest Anatolian calcite veins. The study appeared in the Journal of Earth and Planetary Science Letters. They conducted high-resolution micro-sampling, high-precision U-series dating and micro- chemical analysis on an extensional vein system in a tectonically active area. U/Th ages of the vein system is in between 23.9±0.2 ka and 11.8±0.2ka. Their study offers an innovative means of constraining the absolute timing of late Quaternary seismic and inter-seismic events in Anatolia, Turkey. For more information, please refer to doi:10.1016/j.epsl.2010.12.039
A new study has been published in the Earth and Planetary Science Letters by van Hinsbergen et al. about the geological history of the western part of Turkey. They used African-Europe convergence amounts calculated from the Atlantic plate circuits and seismic tomography images from the west Anatolian mantle structure, and revealed the geological history since Cretaceous times in a context of convergence, subduction, collision and slab break-off. For further details please refer to doi:10.1016/j.epsl.2010.07.024
Ansal et al., from Bogazici University, published a research study about a methodology for seismic microzonation and earthquake damage scenarios. A pilot study is carried out to evaluate seismic damage in a district in Istanbul, which showed the significance of site characterization and site response analysis. Their results can be found in the journal of Soil Dynamics and Earthquake Engineering. doi:10.1016/j.soildyn.2010.06.004
A new paper by Karaoglu et al. appeared in the Lithos about the petrogenesis and 40Ar/39Ar geochronology of volcanic rocks in Usak – Gure Basin, in the Western Turkiye! They published a new chronology for the volcanic rocks exposed on the northern margin of the Menderes Massif. According to their results, the oldest volcanic units are about 17-16 million years old, which indicate the volcanism active during the latest Early Miocene. The youngest ages were found to be around 12 million years old. doi:10.1016/j.lithos.2010.07.001
A new book chapter about the geomorphological features of Turkish coastlines appeared in the Encyclopedia of the World’s Coastal Landforms by Springer. It is the re-edited version of previously published chapter from The World’s Coasts: Online (2003) written by the famous geomorphologist Prof. Oguz Erol. It is a nice reference chapter to keep in mind. doi:10.1007/978-1-4020-8639-7_10.1