Partitioning Anatolian Kinematics into Tectonic Escape and Slab Rollback Dominated Domains

作     者：Jiannan Meng Timothy M.Kusky Erdin Bozkurt Hao Deng Ozan Sinoplu Jiannan Meng;Timothy M. Kusky;Erdin Bozkurt;Hao Deng;Ozan Sinoplu

作者机构：State Key Laboratory of Geological Processes and Mineral ResourcesCenter for Global TectonicsSchool of Earth SciencesChina University of GeosciencesWuhan 430074China Badong National Observatory and Research Station for GeohazardsChina University of GeosciencesWuhan 430074China Department of Geological EngineeringMiddle East Technical University06800 AnkaraTurkey Department of GeosciencesAuburn UniversityAuburn AL 36849USA 

出 版 物：《Journal of Earth Science》 (地球科学学刊（英文版）)

年 卷 期：2024年第35卷第3期

页      面：758-768页

核心收录：

学科分类：070904[理学-构造地质学] 0709[理学-地质学] 070801[理学-固体地球物理学] 07[理学] 0708[理学-地球物理学] 

基　　金：funded by the National Natural Science Foundation of China (Nos. 91755213 and 41888101) the Chinese Scholarship Council 

主　　题：tectonics neotectonics tectonic escape slab rollback Anatolian Plate GPS velocity field geodynamics. 

摘      要：Anatolia is the global archetype of tectonic escape,as witnessed by the devastating 2023 Kahramanmaraş Earthquake sequence,and the 2020 Samos Earthquake,which show different kinematics related to the framework of the escape *** Positioning System(GPS)motions of the wedge-shaped plate differ regionally from northwestwards to southwestwards(from east to west).Anatolia was extruded westward from the Arabian-Eurasian collision along the North and East Anatolian fault systems,rotating counterclockwise into the oceanic free-faces of the Mediterranean and Aegean,with dramatic extension of western Anatolia in traditional ***,which is the dominant mechanism for this change in kinematics,extrusion related to the Arabia/Eurasia collision or rollback of the African slab beneath western Anatolia is still *** assess the dominant driving mechanisms across Anatolia,we analyze recent GPS velocity datasets,and decomposed them into N-S and E-W components,revealing that westward motion is essentially constant across the whole plate and consistent with the slip rates of the North and East Anatolia fault zones,while southward components increase dramatically in the transition area between central and western Anatolia,where a slab tear is *** phenomenon is related to different tectonic driving *** ArabiaEurasia collision drives the Anatolian Plate uniformly westwards while western Anatolia is progressively more affected by the southward retreating African subducting slab west of the Aegean/Cypriot slab tear,which significantly increases the southward component of the velocity field and causes the apparent curve of the whole modern velocity *** 2020 and 2023 earthquake focal mechanisms also confirm that the northward colliding Arabian Plate forced Anatolia to the west,and the retreating African slab is pulling the upper plate of western Anatolian apart in *** propose that the Anatolian Plate is moving westwards as