中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 地质与地球物理研究所
  3. 中国科学院地质与地球物理研究所
A palynological insight into the Miocene aridification in the Eurasian interior

文献类型：期刊论文

作者Tang, Zi-Hua; Ding, Zhong-Li
刊名PALAEOWORLD
出版日期2013-12-01
卷号22期号:3-4页码:77-85
关键词Mid-latitude drying Central Eurasia Miocene Global cooling
ISSN号1871-174X
DOI10.1016/j.palwor.2013.05.001
文献子类Article
英文摘要Monsoonal systems have gained dominance in East Eurasia since the latest Oligocene, evidenced by eolian deposits in North China. Consequently, the central Eurasia became a middle-latitude inland arid area, and in the Late Miocene finally formed a pattern like that of modern day. But the timing, extent, and forcing of the aridification remain poorly understood. Here we gathered palynological sequences from the continental interior and divide them into four chronological parts to reconstruct the development of the central Eurasian aridity during the Miocene. The oldest known aridification record shows the rise of xerophytes observed in the fluviolacustrine Jingou River section at the south margin of the Junggar Basin, suggesting a latest Oligocene drying. Compared with the well-dated records from the inland, the available palynological records reveal two stepwise expansions of arid conditions from the Junggar Basin to its adjacent regions, which occurred in late Middle Miocene and Late Miocene, respectively. The two major expansions are roughly synchronous with the development of North American steppe and call for a global forcing explanation. We discuss various possible explanations for the inland aridity expansions, including regional uplift, land-sea redistribution, global changes in CO2 concentration, and conclude that none of these are fully consistent with the available data. The most likely explanation for the northern mid-latitude drying is global cooling during the Miocene. For eastern Eurasia, cooling weakens monsoon circulation, and consequently drying conditions expand following retreat of the monsoonal rain belt, while in the west, cooling reduces water vapor pressure and therefore reduces the moisture mass transported into the continental interior. (C) 2013 Elsevier B.V. and Nanjing Institute of Geology and Palaeontology, CAS. All rights reserved.
WOS关键词EOCENE-OLIGOCENE TRANSITION ; RED CLAY SEQUENCE ; TIBETAN PLATEAU ; CENTRAL-ASIA ; NORTHERN-HEMISPHERE ; ATMOSPHERIC CIRCULATION ; MAMMALIAN EVOLUTION ; CENTRAL PARATETHYS ; CLIMATIC CHANGES ; SHANWANG FLORA
WOS研究方向Paleontology
语种英语
WOS记录号WOS:000328710300002
出版者ELSEVIER SCIENCE BV
资助机构Chinese Academy of Sciences Key Project(XDB03020503) ; Chinese Academy of Sciences Key Project(XDB03020503) ; National Basic Research Program of China(2013CB956404) ; National Basic Research Program of China(2013CB956404) ; NSFC(41102109) ; NSFC(41102109) ; Chinese Academy of Sciences Key Project(XDB03020503) ; Chinese Academy of Sciences Key Project(XDB03020503) ; National Basic Research Program of China(2013CB956404) ; National Basic Research Program of China(2013CB956404) ; NSFC(41102109) ; NSFC(41102109) ; Chinese Academy of Sciences Key Project(XDB03020503) ; Chinese Academy of Sciences Key Project(XDB03020503) ; National Basic Research Program of China(2013CB956404) ; National Basic Research Program of China(2013CB956404) ; NSFC(41102109) ; NSFC(41102109) ; Chinese Academy of Sciences Key Project(XDB03020503) ; Chinese Academy of Sciences Key Project(XDB03020503) ; National Basic Research Program of China(2013CB956404) ; National Basic Research Program of China(2013CB956404) ; NSFC(41102109) ; NSFC(41102109)
源URL[http://ir.iggcas.ac.cn/handle/132A11/87852]  
专题中国科学院地质与地球物理研究所
通讯作者Tang, Zi-Hua
作者单位Chinese Acad Sci, Inst Geol & Geophys, Key Lab Cenozo Geol & Environm, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Tang, Zi-Hua,Ding, Zhong-Li. A palynological insight into the Miocene aridification in the Eurasian interior[J]. PALAEOWORLD,2013,22(3-4):77-85.
APA Tang, Zi-Hua,&Ding, Zhong-Li.(2013).A palynological insight into the Miocene aridification in the Eurasian interior.PALAEOWORLD,22(3-4),77-85.
MLA Tang, Zi-Hua,et al."A palynological insight into the Miocene aridification in the Eurasian interior".PALAEOWORLD 22.3-4(2013):77-85.

入库方式： OAI收割

来源：地质与地球物理研究所

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。