气候变化领域集成服务门户(CCPortal): Tectonic forcing of environmental transition in Central Asia at ~11

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DOI	10.1016/j.gr.2020.08.012
	Tectonic forcing of environmental transition in Central Asia at ~11–9 Ma
	Zhang T.; Han W.; Fang X.; Song C.; Wang Y.; Tian Q.; Zhang W.; Feng Z.; Tan M.
发表日期	2021
ISSN	1342937X
起始页码	19
结束页码	30
卷号	89
英文摘要	A comprehensive understanding of the Neogene paleoenvironmental evolution of Central Asia is important for predicting the future climatic and environmental conditions within the region. However, our understanding of the relative roles of Tibetan Plateau (TP) uplift and global cooling in driving its paleoenvironmental evolution remain elusive. Here we present two well-dated (~16–5 Ma) independent environmental magnetic records from the northern TP, together with a comprehensive analysis of other well-dated Neogene environmental magnetic datasets for ten other sites from the northern TP. The results indicate synchronous changes in magnetic parameters which we interpret as reflecting a major environmental transition in Central Asia at ~11–9 Ma, which is supported by evidence from multiple independent paleoecological and paleoclimatic studies. A major environmental transition at 11–9 Ma is also supported by the results of linear and non-linear analyses of the magnetic records of the two studied sections. Our analyses reveal that prior to ~11 Ma, the environmental fluctuations within the QB were primarily driven by insolation variations modulated by Earth orbital parameters; however, after ~11 Ma this influence faded and there was a shift from a stable environmental system, characterized by periodic fluctuations, to an unstable system with erratic fluctuations. The timing of this phase shift in the paleoenvironment of Central Asia was not related to global cooling but it coincided with extensive tectonic activity in the TP. Together with conceptual models and previous numerical simulations results, we conclude that a major shift of the dominant driver of Central Asia paleoenvironment occurred at ~11–9 Ma and that uplift of the TP, rather than global cooling, was responsible. © 2020 International Association for Gondwana Research
英文关键词	Central Asia; Global cooling; Neogene; Paleoenvironmental change; Tectonic activity
语种	英语
scopus关键词	Gondwana Research
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/158370
作者单位	School of Earth Sciences; Key Laboratory of Western China's Mineral Resources of Gansu Province; Lanzhou University; Lanzhou; China; School of Earth Sciences; CAS Center for Excellence in Tibetan Plateau Earth Sciences and Institute of Tibetan Plateau Research; Chinese Academy of Sciences; Beijing; China; Shandong Provincial Key Laboratory of Water and Soil Conservation and Environmental Protection; College of Resources and Environment; Linyi University; Linyi; China; University of Chinese Academy of Sciences; Beijing; China; China Northwest Institute of Eco-Environment and Resources; Chinese Academy of Sciences; & Key Laboratory of Petroleum Resources; Lanzhou; Gansu Province; China; Yan an University; Yan'an; China; College of Earth and Environmental Sciences; Lanzhou University; Lanzhou; China
推荐引用方式 GB/T 7714	Zhang T.,Han W.,Fang X.,等. Tectonic forcing of environmental transition in Central Asia at ~11–9 Ma[J]. 中国科学院西北生态环境资源研究院,2021,89.
APA	Zhang T..,Han W..,Fang X..,Song C..,Wang Y..,...&Tan M..(2021).Tectonic forcing of environmental transition in Central Asia at ~11–9 Ma.,89.
MLA	Zhang T.,et al."Tectonic forcing of environmental transition in Central Asia at ~11–9 Ma".89(2021).