Flip convergence across the Phoenician basin through nucleation of subduction |
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| Institution: | 1. Institute of Geophysics, Department of Geosciences, Swiss Federal Institute of Technology (ETH-Zurich), Sonneggstrasse 5, CH-8092 Zurich, Switzerland;2. School of Earth Sciences and Resources, China University of Geosciences Beijing, No. 29 Xueyuan Road, Haidian District, Beijing 100083, China;3. Department of Interdisciplinary Science, Faculty of Science, Kochi University, Akebono-cho 2-5-1, Kochi 780-8520, Japan;4. Karelian Research Center of RAS, Institute of Geology, Pushkinskaya St., 11, Petrozavodsk 185610, Karelia, Russia;5. Institute of Geology and Mineralogy SB RAS, Koptyuga Ave. 3, Novosibirsk 630090, Russia |
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| Abstract: | Modern examples of active subduction nucleation are scarce. Hence, knowledge is derived from reconstructions of old subduction zones and numerical modeling. Here we present a rare analog of induced subduction nucleation occurring today along the northeastern Mediterranean continental margin. Geological evidence gathered here suggests that plate convergence between Africa–Sinai–Arabia and Eurasia–Anatolia since the Pliocene led to fragmentation of the northern Sinai plate into the Phoenician and Northern Levant micro-plates. Currently convergence is in the process of shifting from subduction cessation beneath the eastern Cyprus Arc to reactivation of the northern Levant margin. This shift induces the nucleation of an embryonic subduction zone, through polarity reversal. It re-defines the front of plate convergence. |
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