Arid
DOI10.1016/j.gloplacha.2017.03.006
Cenozoic sediment flux in the Qaidam Basin, northern Tibetan Plateau, and implications with regional tectonics and climate
Bao, J.1,2; Wang, Yadong3; Song, Chunhui1,2; Feng, Ying1,2; Hu, Chunhua1,2; Zhong, Sirui1,2; Yang, Jiwei4
通讯作者Song, Chunhui
来源期刊GLOBAL AND PLANETARY CHANGE
ISSN0921-8181
EISSN1872-6364
出版年2017
卷号155页码:56-69
英文摘要

As the largest Mesozoic-Cenozoic terrestrial intermountain basin in the northern Tibetan Plateau, the Qaidam Basin is an ideal basin to examine the influences of regional tectonics and climate on sediment flux. Research conducted over the last two decades has provided abundant information about paleoclimatology and tectonic histories. In this study, we used the restoration of seven balanced cross-sections and compiled thickness data of ten outcrop sections and four boreholes to reconstruct the basin boundaries, develop isopach maps, and calculate the sediment flux in the Qaidam Basin. Our results show that the sediment flux in the Qaidam Basin increased gradually between 53.5 and 35.5 Ma, decreased to its lowest value from 35.5 to 22 Ma, increased between 22 and 2.5 Ma, and then increased dramatically after 2.5 Ma. By comparing the changes in the sediment flux with our reconstructed shortening rate in the Qaidam Basin, and the records of regional tectonic events and regional and global climate changes, we suggest that the gradual increase in the sediment flux from 53.5 to 40.5 Ma was controlled by both the tectonic uplift of the Tibetan Plateau and the relatively warm and humid climate, and that the high sediment flux from 40.5 to 35.5 Ma was mainly controlled by tectonics. The low sediment flux from 35.5 to 22 Ma was a response to the relatively cold and arid climate in a stable tectonic setting. The relatively high sediment flux between 22 and ’15.3 Ma was related to tectonic activity and the warm and humid climate. The intense tectonic uplift of the northern Tibetan Plateau and the frequent climate oscillations after 15.3 Ma, particularly the glacial-interglacial cycles after 2.5 Ma, caused the high sediment flux after 153 Ma and the dramatic increase after 2.5 Ma, respectively. (C) 2017 Elsevier B.V. All rights reserved.


英文关键词Cenozoic Qaidam Basin Balanced cross-section Sediment flux Tectonic uplift Climate change
类型Review
语种英语
国家Peoples R China
收录类别SCI-E
WOS记录号WOS:000408783700006
WOS关键词ALTYN-TAGH FAULT ; APATITE FISSION-TRACK ; EASTERN KUNLUN MOUNTAINS ; CROSS-SECTION RESTORATION ; SHAN NW CHINA ; QILIAN SHAN ; NORTHEASTERN MARGIN ; CENTRAL-ASIA ; MAGNETIC-SUSCEPTIBILITY ; ACCUMULATION RATES
WOS类目Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向Physical Geography ; Geology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/199347
作者单位1.Lanzhou Univ, Sch Earth Sci, Lanzhou 730000, Gansu, Peoples R China;
2.Lanzhou Univ, Key Lab Mineral Resources Western China Gansu Pro, Lanzhou 730000, Gansu, Peoples R China;
3.Chinese Acad Sci, Inst Geol & Geophys, Gansu Prov Key Lab Petr Resources Res, Key Lab Petr Resources, Lanzhou 730000, Gansu, Peoples R China;
4.Gansu Prov Nucl Geol Brigade 212, Wuwei 733000, Peoples R China
推荐引用方式
GB/T 7714
Bao, J.,Wang, Yadong,Song, Chunhui,et al. Cenozoic sediment flux in the Qaidam Basin, northern Tibetan Plateau, and implications with regional tectonics and climate[J],2017,155:56-69.
APA Bao, J..,Wang, Yadong.,Song, Chunhui.,Feng, Ying.,Hu, Chunhua.,...&Yang, Jiwei.(2017).Cenozoic sediment flux in the Qaidam Basin, northern Tibetan Plateau, and implications with regional tectonics and climate.GLOBAL AND PLANETARY CHANGE,155,56-69.
MLA Bao, J.,et al."Cenozoic sediment flux in the Qaidam Basin, northern Tibetan Plateau, and implications with regional tectonics and climate".GLOBAL AND PLANETARY CHANGE 155(2017):56-69.
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