DOI: 10.1016/j.epsl.2017.11.025
Scopus记录号: 2-s2.0-85035095716
论文题名: Quantifying Arabia–Eurasia convergence accommodated in the Greater Caucasus by paleomagnetic reconstruction
作者: van der Boon A. ; van Hinsbergen D.J.J. ; Rezaeian M. ; Gürer D. ; Honarmand M. ; Pastor-Galán D. ; Krijgsman W. ; Langereis C.G.
刊名: Earth and Planetary Science Letters
ISSN: 0012821X
出版年: 2018
卷: 482 起始页码: 454
结束页码: 469
语种: 英语
英文关键词: Eocene volcanics
; Greater Caucasus
; Iran
; orocline
; paleomagnetism
; tectonic rotations
Scopus关键词: Geochronology
; Geomagnetism
; Structural geology
; Tectonics
; Greater Caucasus
; Iran
; Orocline
; paleomagnetism
; Tectonic rotations
; Volcanics
; Transform faults
; Arabian plate
; Eocene
; Eurasian plate
; paleomagnetism
; plate boundary
; plate convergence
; quantitative analysis
; reconstruction
; tectonic rotation
; Caucasus
英文摘要: Since the late Eocene, convergence and subsequent collision between Arabia and Eurasia was accommodated both in the overriding Eurasian plate forming the Greater Caucasus orogen and the Iranian plateau, and by subduction and accretion of the Neotethys and Arabian margin forming the East Anatolian plateau and the Zagros. To quantify how much Arabia–Eurasia convergence was accommodated in the Greater Caucasus region, we here provide new paleomagnetic results from 97 volcanic sites (∼500 samples) in the Talysh Mountains of NW Iran, that show ∼15° net clockwise rotation relative to Eurasia since the Eocene. We apply a first-order kinematic restoration of the northward convex orocline that formed to the south of the Greater Caucasus, integrating our new data with previously published constraints on rotations of the Eastern Pontides and Lesser Caucasus. This suggests that north of the Talysh ∼120 km of convergence must have been accommodated. North of the Eastern Pontides and Lesser Caucasus this is significantly more: 200–280 km. Our reconstruction independently confirms previous Caucasus convergence estimates. Moreover, we show for the first time a sharp contrast of convergence between the Lesser Caucasus and the Talysh. This implies that the ancient Paleozoic–Mesozoic transform plate boundary, preserved between the Iranian and East-Anatolian plateaus, was likely reactivated as a right-lateral transform fault since late Eocene time. © 2017 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/110143
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
There are no files associated with this item.
作者单位: Utrecht University, Netherlands; Institute for Advanced Studies in Basic Sciences, Zanjan, Iran; Center for Northeast Asian Studies, Tohoku University, Japan
Recommended Citation:
van der Boon A.,van Hinsbergen D.J.J.,Rezaeian M.,et al. Quantifying Arabia–Eurasia convergence accommodated in the Greater Caucasus by paleomagnetic reconstruction[J]. Earth and Planetary Science Letters,2018-01-01,482