气候变化领域集成服务门户(CCPortal): Timing and forcing mechanism of the final Neotethys seawater retreat from Central Iran in response to the Arabia-Asia collision in the late early Miocene

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DOI	10.1016/j.gloplacha.2020.103395
	Timing and forcing mechanism of the final Neotethys seawater retreat from Central Iran in response to the Arabia-Asia collision in the late early Miocene
	Sun J.; Talebian M.; Jin C.; Liu W.; Zhang Z.; Cao M.; Windley B.F.; Sheykh M.; Shahbazi R.; Tian S.
发表日期	2021
ISSN	9218181
卷号	197
英文摘要	The Iranian Plateau lies in the middle of the Neotethys tectonic domain; to the east it connects with the Tibetan Plateau, and to the west with the Anatolian Plateau and the Alpine orogenic belts. In the Cenozoic it underwent land/sea changes and tectonic uplift in response to the Arabia-Asia plate collision. One of the most prominent geological consequences of the collision was the disappearance of an epicontinental sea in Central Iran, which was a northeastern branch of the Neotethys seaway in the Oligocene-early Miocene. The timing of the final seawater retreat from Central Iran and its forcing mechanism are important for understanding the effects of Arabia-Asia plate collision as well as global eustatic sea-level changes. In this paper we present new magnetostratigraphy, U–Pb ages of one tuffaceous bed, and stable isotopic records of carbonates. The results of this multidisciplinary study indicate that a shallow open sea in the Qom back-arc basin ended at 17 Ma, but the final seawater retreat from a restricted marine environment was at 16.8 Ma. The final regression was just before the Middle Miocene Optimum, implying that it was not related to a climatic factor, but driven by the Arabia-Asia plate collision. Moreover, the δ18O record of fine-grained lacustrine carbonates indicates an isotopic shift towards more positive isotopes after 13 Ma, suggesting an enhanced aridification in Central Iran. This climatic deterioration was a response to reduced transport of moisture by westerlies from a retreating Neotethys Sea driven by a global eustatic sea-level drop in response to the East Antarctica ice-sheet expansion after the middle Miocene Optimum. © 2020 Elsevier B.V.
英文关键词	Land-sea change; Magnetostratigraphy; Neogene; Paleoclimate; Qom back-arc basin
语种	英语
scopus关键词	Global and Planetary Change
来源机构	中国科学院地质与地球物理研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/158305
作者单位	Key Laboratory of Cenozoic Geology and Environment; Institute of Geology and Geophysics; Chinese Academy of Sciences; Beijing; 100029; China; CAS Center for Excellence in Tibetan Plateau Earth Sciences; Chinese Academy of Sciences; Beijing; 100101; China; University of Chinese Academy of Sciences; Beijing; 100049; China; Research Institute for Earth Sciences; Geological Survey of Iran; Tehran; Iran; Institute of Earth Environment; Chinese Academy of Sciences; Xi'an; 710061; China; Department of Geology; University of Leicester; Leicester; LEI 7RH; United Kingdom; Applied Research Center; Geological Survey of Iran; Tehran; Iran; Office of Geohazards; Engineering and Environmental Geology; Geological Survey of Iran; Tehran; Iran
推荐引用方式 GB/T 7714	Sun J.,Talebian M.,Jin C.,et al. Timing and forcing mechanism of the final Neotethys seawater retreat from Central Iran in response to the Arabia-Asia collision in the late early Miocene[J]. 中国科学院地质与地球物理研究所,2021,197.
APA	Sun J..,Talebian M..,Jin C..,Liu W..,Zhang Z..,...&Tian S..(2021).Timing and forcing mechanism of the final Neotethys seawater retreat from Central Iran in response to the Arabia-Asia collision in the late early Miocene.,197.
MLA	Sun J.,et al."Timing and forcing mechanism of the final Neotethys seawater retreat from Central Iran in response to the Arabia-Asia collision in the late early Miocene".197(2021).