The evolution of pre-existing structures during the tectonic inversion process of the Atlas chain of Tunisia |
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| Institution: | 1. CAS Key Laboratory of Continental Collision and Plateau Uplift, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100010, China;2. CAS Center for Excellence in Tibetan Plateau Earth Sciences, Chinese Academy of Sciences (CAS), Beijing 100101, China;3. College of Tourism and Resource Environment, Zaozhuang University, Zaozhuang 277160, China;1. Geologie, Technische Universität Bergakademie Freiberg, 09599 Freiberg, Germany;2. S.I. Subbotin Institute of Geophysics, NAS of Ukraine, 03680 Kyiv, Ukraine;3. Institute of Geodesy, Lviv Polytechnic National University, Lviv, Ukraine;4. D. Serikbayev East-Kazakhstan State Technical University, Ust-Kamenogorsk, Kazakhstan |
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| Abstract: | Previous studies on the plate movement between Africa and Eurasia have pointed out the evidence of successive phases of transtension and transpression. The transtensional regime was active between Jurassic and Cretaceous times. It led to extensional structures which were reactivated during the Cenozoic transpressional regime as consequence of the Africa–Europe convergence. In this paper, we used satellite images and field observations from Central Tunisia to demonstrate the role of the previous extension tectonics in the structural evolution of the Atlassic chain for the tectonic inversion process. In the study area, the geometry of structures and fault kinematics is used to document transition from transtension to transpression. The tectono-sedimentary record reflects the mechanical influence of reactivation of previous tectonics in the structural evolution of the study area and points out the significant role of the tectonic inheritance in the development of the Atlassic chain of Tunisia. |
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