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Volume 34 Issue 2
Apr 2023
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Abdullah Sar, Sevcan Kürüm, Ahmet Feyzi Bingöl. Early Cretaceous to Middle Eocene Magmatic Evolution of Eastern Pontides: Zircon U-Pb Ages and Hf Isotopes, and Geochemical and Sr-Nd Isotopic Constraints from Multiphase Granitoids, NE Turkey. Journal of Earth Science, 2023, 34(2): 518-535. doi: 10.1007/s12583-022-1640-2
Citation: Abdullah Sar, Sevcan Kürüm, Ahmet Feyzi Bingöl. Early Cretaceous to Middle Eocene Magmatic Evolution of Eastern Pontides: Zircon U-Pb Ages and Hf Isotopes, and Geochemical and Sr-Nd Isotopic Constraints from Multiphase Granitoids, NE Turkey. Journal of Earth Science, 2023, 34(2): 518-535. doi: 10.1007/s12583-022-1640-2

Early Cretaceous to Middle Eocene Magmatic Evolution of Eastern Pontides: Zircon U-Pb Ages and Hf Isotopes, and Geochemical and Sr-Nd Isotopic Constraints from Multiphase Granitoids, NE Turkey

doi: 10.1007/s12583-022-1640-2
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  • Corresponding author: Abdullah Sar,
  • Received Date: 24 Sep 2021
  • Accepted Date: 22 Feb 2022
  • The Eastern Pontides orogenic belt (EPOB) represents a significant segment of the Alpine-Himalayan orogenic belt that evolved from the Paleozoic to Cenozoic periods. Here we report new zircon U-Pb ages, together with Lu-Hf isotopes, and whole-rock geochemical and Sr-Nd isotopic analyses of plutonic rocks from EPOB, northeastern Turkey. Our aim is to interpret magmatic evolution in which the granitoids formed. Zircon U-Pb dating of six samples yielded crystallization ages of ~134, ~82, ~39 Ma, respectively. They show a wide range of 87Sr/86Sr(i) (0.703 9–0.710 9), and εNd(t) values varying from -9 to +4.6, yielding model ages (TDM) from 520 to 1 623 Ma, suggesting a heterogeneous magma source. Dated zircons show exlusively positive εHf(t) values (+12.4 to +1.4), yielding model ages (TDM) from 352 to 1 059 Ma, implying that they are most likely derived from a juvenile lower crust rather than the mature continental crust. In this study, we suggested that the northward subduction of the Neo-Tethyan oceanic slab began from the Early Cretaceous and resulted in the Late Cretaceous magmatism. Moreover, the Middle Eocene magmatism in the EPOB was related to the collision of the Anatolide Taurid Platform (ATP) with the Pontides.


  • Electronic Supplementary Materials: Supplementary materials (Material 1, Tables S1, S2, S3, S4) are available in the online version of this article at
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