globalchange  > 气候变化与战略
DOI: 10.1016/j.tecto.2020.228459
论文题名:
Post-Eocene coupled oroclines in the Talesh (NW Iran): Paleomagnetic constraints
作者: Rezaeian M.; Kuijper C.B.; van der Boon A.; Pastor-Galán D.; Cotton L.J.; Langereis C.G.; Krijgsman W.
刊名: Tectonophysics
ISSN: 00401951
出版年: 2020
卷: 786
语种: 英语
中文关键词: Arabia-Eurasia collision ; Aras - Lahijan faults ; Orocline ; Paleomagnetism ; Talesh ; Tethys
英文关键词: Clocks ; Deformation ; Landforms ; Transform faults ; Clockwise rotation ; Crustal-scale shear zones ; Deformation history ; Differential rotation ; Late cretaceous ; Mountain belts ; Paleomagnetic analysis ; Vertical-axis rotation ; Rotation ; continental collision ; deformation ; Eocene ; fault zone ; orogeny ; paleomagnetism ; shear zone ; transform fault ; Black Sea ; Caspian Sea ; Gilan ; Iran ; Talesh
英文摘要: 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. © 2020 Elsevier B.V.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/170694
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作者单位: Department of Earth Sciences, Institute for Advanced Studies in the Basic Sciences, Zanjan, Iran; Paleomagnetic Laboratory Fort Hoofddijk, Utrecht University, Utrecht, Netherlands; Geomagnetic Laboratory, University of Liverpool, Liverpool, United Kingdom; Center for Northeast Asian Studies, Tohoku University, Sendai, Japan; Frontier Research Institute for Interdisciplinary Sciences, Tohoku University, Sendai, Japan; School of Environment, Geography and Geosciences, University of Portsmouth, United Kingdom

Recommended Citation:
Rezaeian M.,Kuijper C.B.,van der Boon A.,et al. Post-Eocene coupled oroclines in the Talesh (NW Iran): Paleomagnetic constraints[J]. Tectonophysics,2020-01-01,786
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