@article{883c69084d554efe9014b5203b5d15ca,
title = "Post-Eocene coupled oroclines in the Talesh (NW Iran): Paleomagnetic constraints",
abstract = "The Talesh Mountains (NW Iran) witnessed a long deformation history from the Triassic Cimmerian orogeny to the ongoing Arabia-Eurasia collision. This protracted multi-stage deformation has generated a remarkably curved orogen with a puzzling kinematic and deformational history. In this study, we investigate the origin of the Talesh curvature through paleomagnetic analyses on rocks of Paleozoic, Mesozoic and Cenozoic age. Our results indicate that at least two major, large-scale, vertical-axis-rotations took place since the Late Cretaceous: 1) a pre-Eocene 73° ± 17° clockwise rotation and 2) post-Eocene differential rotations that formed the Z-shaped mountain belt within a crustal-scale shear zone. The latter involved an increasing amount of clockwise (CW) rotation from south (16°) to north (48°). The orocline formation likely started during the Oligocene where an approximately east-west oriented mountain belt was buckled by the Arabia-Eurasia collision, with Arabia acting as a rigid indenter and the South Caspian basin as a rigid backstop. We hypothesise that the NE-SW oriented Aras and Lahijan fault zones, inherited from transform faults related to the Mesozoic opening of the Caspian-Black Sea back-arc, accommodated the coupled orocline formation.",
keywords = "Arabia-Eurasia collision, Aras - Lahijan faults, Orocline, Paleomagnetism, Talesh, Tethys",
author = "M. Rezaeian and Kuijper, {C. B.} and {van der Boon}, A. and D. Pastor-Gal{\'a}n and Cotton, {L. J.} and Langereis, {C. G.} and W. Krijgsman",
note = "Funding Information: We thank Ali Niknam and Abdolreza Ghods for field assistance. This work was financially supported by the Netherlands Organization for Scientific Research (NWO) [grant 865.10.011 ] of WK. DPG is funded by a post-doctoral fellowship from The Netherlands Research Centre for Integrated Solid Earth Sciences (ISES) and a fellowship for overseas researchers from the Japan Society for Promotion of Science (JSPS) (grant P16329 ) and a MEXT/JSPS KAKENHI Grant ( JP16F16329 ). We thank two anonymous reviewers for their careful reading of the manuscript and constructive remarks. Funding Information: We thank Ali Niknam and Abdolreza Ghods for field assistance. This work was financially supported by the Netherlands Organization for Scientific Research (NWO) [grant 865.10.011] of WK. DPG is funded by a post-doctoral fellowship from The Netherlands Research Centre for Integrated Solid Earth Sciences (ISES) and a fellowship for overseas researchers from the Japan Society for Promotion of Science (JSPS) (grant P16329) and a MEXT/JSPS KAKENHI Grant (JP16F16329). We thank two anonymous reviewers for their careful reading of the manuscript and constructive remarks. Mahnaz Rezaeian and Chris B. Kuijper: Fieldwork, Design and perform the experiments, Paleomagnetic Data producing, Writing, Reviewing, Discussion. Annique van der Boon and Daniel Pastor-G?lan: Fieldwork, Writing, Reviewing, Editing, Discussion. Laura J. Cotton: Biostratigraphy, Editing. Cornelis G. Langereis and Wout Krijgsman: Fieldwork, Writing, Reviewing, Editing, Discussion. The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. Publisher Copyright: {\textcopyright} 2020 Elsevier B.V.",
year = "2020",
month = jul,
day = "5",
doi = "10.1016/j.tecto.2020.228459",
language = "English",
volume = "786",
journal = "Tectonophysics",
issn = "0040-1951",
publisher = "Elsevier",
}