Arid
DOI10.1073/pnas.1410890111
Late Miocene episodic lakes in the arid Tarim Basin, western China
Liu, Weiguo1,2; Liu, Zhonghui3; An, Zhisheng1,2; Sun, Jimin4; Chang, Hong1; Wang, Ning1; Dong, Jibao1; Wang, Huanye1
通讯作者Liu, Weiguo
来源期刊PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
ISSN0027-8424
出版年2014
卷号111期号:46页码:16292-16296
英文摘要

The Tibetan Plateau uplift and Cenozoic global cooling are thought to induce enhanced aridification in the Asian interior. Although the onset of Asian desertification is proposed to have started in the earliest Miocene, prevailing desert environment in the Tarim Basin, currently providing much of the Asian eolian dust sources, is only a geologically recent phenomenon. Here we report episodic occurrences of lacustrine environments during the Late Miocene and investigate how the episodic lakes vanished in the basin. Our oxygen isotopic (delta O-18) record demonstrates that before the prevailing desert environment, episodic changes frequently alternating between lacustrine and fluvial-eolian environments can be linked to orbital variations. Wetter lacustrine phases generally corresponded to periods of high eccentricity and possibly high obliquity, and vice versa, suggesting a temperature control on the regional moisture level on orbital timescales. Boron isotopic (delta B-11) and delta O-18 records, together with other geochemical indicators, consistently show that the episodic lakes finally dried up at similar to 4.9 million years ago (Ma), permanently and irreversibly. Although the episodic occurrences of lakes appear to be linked to orbitally induced global climatic changes, the plateau (Tibetan, Pamir, and Tianshan) uplift was primarily responsible for the final vanishing of the episodic lakes in the Tarim Basin, occurring at a relatively warm, stable climate period.


英文关键词Tarim Basin Late Miocene aridification tectonic uplift Milankovitch
类型Article
语种英语
国家Peoples R China
收录类别SCI-E
WOS记录号WOS:000345153300032
WOS关键词TIBETAN PLATEAU ; TIEN-SHAN ; SEDIMENTARY SEQUENCE ; CENTRAL-ASIA ; EVOLUTION ; UPLIFT ; BORON ; CLIMATE ; DESERTIFICATION ; QINGHAI
WOS类目Multidisciplinary Sciences
WOS研究方向Science & Technology - Other Topics
来源机构中国科学院地球环境研究所 ; 中国科学院地质与地球物理研究所
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/184478
作者单位1.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710075, Peoples R China;
2.Xi An Jiao Tong Univ, Sch Human Settlement & Civil Engn, Xian 710049, Peoples R China;
3.Univ Hong Kong, Dept Earth Sci, Hong Kong, Hong Kong, Peoples R China;
4.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
Liu, Weiguo,Liu, Zhonghui,An, Zhisheng,et al. Late Miocene episodic lakes in the arid Tarim Basin, western China[J]. 中国科学院地球环境研究所, 中国科学院地质与地球物理研究所,2014,111(46):16292-16296.
APA Liu, Weiguo.,Liu, Zhonghui.,An, Zhisheng.,Sun, Jimin.,Chang, Hong.,...&Wang, Huanye.(2014).Late Miocene episodic lakes in the arid Tarim Basin, western China.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,111(46),16292-16296.
MLA Liu, Weiguo,et al."Late Miocene episodic lakes in the arid Tarim Basin, western China".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 111.46(2014):16292-16296.
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