2026-10-23T17:53:29Zhttps://gumushane-rdlopen.rawdatalibrary.net/oai/requestoai:gumushane-rdlopen.rawdatalibrary.net:gumushane/103362026-10-22T11:34:28Zopenairecom_gumushane_10000col_gumushane_10001com_gumushane_10007col_gumushane_10171Migrating magmatism in a continental arc: Geodynamics of the Eastern Mediterranean revisitedEyuboglu, YenerSantosh, M.Dudas, Francis O.Chung, Sun-LinAkaryali, EnverAdakiteIsotopesGeodynamicsRidge subductionSlab windowEastern PontidesThe eastern Pontide orogenic belt in Turkey offers a critical region to evaluate the geodynamic evolution of the eastern Mediterranean region during the late Mesozoic-Cenozoic. Here we synthesize results from our exhaustive database on the geochemical characteristics of adakitic magmatism from 137 bodies covering 7 domains in the southern zone of eastern Pontides. Together with new Pb-Sr-Nd results, we show that the adakitic magmatism in the eastern Pontide belt is clearly linked to slab window processes during ridge subduction, as against the earlier models that assumed partial melting of a delaminated or thickened lower continental crust following collision. The isotopic compositions display a complex pattern and suggest mixing of multiple source materials such as depleted mantle, enriched lithospheric mantle, and upper crust. We also confirm a southward polarity of subduction as against the previous models that assumed a northward subduction. We supplement our model with evidence for a northward propagation of the adakitic magmatism, spatial and temporal variations in arc magmatism, presence of south-dipping reverse faults and a synthesis of the available paleomagnetic data. Our studies also suggest that the Black-Sea is a remnant of the Tethyan ocean that was situated to the north of the arc during the late Mesozoic-Cenozoic as against the correlation to a late Mesozoic-Cenozoic back-arc basin related to a northward subduction of the Paleo- or Neo-tethyan oceanic lithosphere in alternate models. (C) 2010 Elsevier Ltd. All rights reserved.PERGAMON-ELSEVIER SCIENCE LTD2011-07Articlehttps://rdlopen.rawdatalibrary.net/r/gumushane/10336https://doi.org/10.1016/j.jog.2010.11.0060264-3707enJOURNAL OF GEODYNAMICSinfo:eu-repo/semantics/closedAccessinfo:eu-repo/semantics/articlehttps://gumushane-rdlopen.rawdatalibrary.net/tr/items/gumushane/10336