Paleoclimatic fluctuations inferred from leaf wax n-alkane records in Central Tibet in the late Oligocene to early Miocene

doi:10.1016/j.palaeo.2019.109504

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	Paleoclimatic fluctuations inferred from leaf wax n-alkane records in Central Tibet in the late Oligocene to early Miocene
	Cao, Mengmeng 1,2; Sun, Jimin 1,2,3; Liu, Weiguo 2,4; Hou, Juzhi 5,6; Tian, Qian 7; Sun, Zhe 2,5
通讯作者	Sun, Jimin(jmsun@mail.iggcas.ac.cn)
	2020-02-01
发表期刊	PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
ISSN	0031-0182
卷号	539 页码:16
摘要	Climatic variations and their forcing mechanisms in Tibet are highly significant for understanding the environmental effects of the Tibetan Plateau through its controlling on atmospheric circulation. Here we present new leaf wax n-alkanes from Cenozoic lacustrine sediments in the Lunpola Basin of central Tibet to constrain long-term paleoclimatic changes. Our results suggest that the paleoclimate from the late Oligocene to early Miocene was generally stable, but tending slightly towards cold-dry from 25.5 to 23.2 Ma, followed by a trend towards warm-humid between 23.2 and 21.7 Ma, and finally by a more arid and highly oscillating climate after 21.7 Ma. Our results compare favorably with the proxies of marine delta O-18 records, which suggests that the general long-term trend since the late Oligocene has been a response to global temperature variations. Moreover, spectral analysis of delta C-13(31) and delta H-2(31) data reveals that relative humidity exhibits similar to 400 kyr cycles, controlled mainly by periodic changes in global ice volumes.
关键词	Isotopes Redness Lunpola Basin Cenozoic Paleoclimate Spectral analysis
DOI	10.1016/j.palaeo.2019.109504
关键词[WOS]	HYDROGEN-ISOTOPIC COMPOSITION ; EOCENE PALYNOLOGICAL RECORD ; ANTARCTIC ICE-SHEET ; ATMOSPHERIC CO2 ; LUNPOLA BASIN ; DELTA-D ; ORGANIC GEOCHEMISTRY ; TERRESTRIAL PLANTS ; AFRICAN HYDROLOGY ; VEGETATION CHANGE
收录类别	SCI ; SCI
语种	英语
资助项目	National Natural Science Foundation of China[41672168] ; National Natural Science Foundation of China[41888101] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA20070202]
WOS研究方向	Physical Geography ; Geology ; Paleontology
项目资助者	National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary ; Paleontology
WOS记录号	WOS:000508745600008
出版者	ELSEVIER
引用统计	被引频次：12[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ieecas.cn/handle/361006/13158
专题	加速器质谱中心
通讯作者	Sun, Jimin
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Cenozo Geol & Environm, Beijing 100029, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Ctr Excellence Tibetan Plateau Earth Sci, Beijing, Peoples R China 4.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China 5.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing 100101, Peoples R China 6.China Univ Geosci, Fac Earth Sci, Wuhan 430074, Peoples R China 7.Yanan Univ, Yanan 716000, Peoples R China
推荐引用方式 GB/T 7714	Cao, Mengmeng,Sun, Jimin,Liu, Weiguo,et al. Paleoclimatic fluctuations inferred from leaf wax n-alkane records in Central Tibet in the late Oligocene to early Miocene[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2020,539:16.
APA	Cao, Mengmeng,Sun, Jimin,Liu, Weiguo,Hou, Juzhi,Tian, Qian,&Sun, Zhe.(2020).Paleoclimatic fluctuations inferred from leaf wax n-alkane records in Central Tibet in the late Oligocene to early Miocene.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,539,16.
MLA	Cao, Mengmeng,et al."Paleoclimatic fluctuations inferred from leaf wax n-alkane records in Central Tibet in the late Oligocene to early Miocene".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 539(2020):16.