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Late Miocene episodic lakes in the arid Tarim Basin, western China
Liu, WG (Liu, Weiguo)[ 1,2 ]; Liu, ZH (Liu, Zhonghui)[ 3 ]; An, ZS (An, Zhisheng)[ 1,2 ]; Sun, JM (Sun, Jimin)[ 4 ]; Chang, H (Chang, Hong)[ 1 ]; Wang, N (Wang, Ning)[ 1 ]; Dong, JB (Dong, Jibao)[ 1 ]; Wang, HY (Wang, Huanye)[ 1 ]
2014-11-18
Source PublicationPROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
Volume111Issue:46Pages:16292-16296
Subtype期刊论文
Abstract

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.

KeywordTarim Basin Late Miocene Aridification Tectonic Uplift Milankovitch
DOI10.1073/pnas.1410890111
Indexed BySCI
Language英语
Citation statistics
Cited Times:37[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/9751
Collection加速器质谱中心
Corresponding AuthorLiu, WG (Liu, Weiguo)[ 1,2 ]
Affiliation1.State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an 710075, China;
2.School of HumanSettlement and Civil Engineering, Xi’an Jiaotong University, Xi’an 710049, China;
3.Department of Earth Sciences, The University of Hong Kong, Hong Kong;
4.Key Laboratory of Cenozoic Geology and Environment, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China
Recommended Citation
GB/T 7714
Liu, WG ,Liu, ZH ,An, ZS ,et al. Late Miocene episodic lakes in the arid Tarim Basin, western China[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2014,111(46):16292-16296.
APA Liu, WG .,Liu, ZH .,An, ZS .,Sun, JM .,Chang, H .,...&Wang, HY .(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, WG ,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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