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

	Paleoclimatic fluctuations inferred from leaf wax n-alkane records in Central Tibet in the late Oligocene to early Miocene
	Cao, Mengmeng 2,3; Sun, Jimin 2,3,4; Liu, Weiguo 3,5; Hou, Juzhi 1,6; Tian, Qian 7; Sun, Zhe 3,6
刊名	PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
	2020-02-01
卷号	539 页码:16
关键词	Isotopes Redness Lunpola Basin Cenozoic Paleoclimate Spectral analysis
ISSN号	0031-0182
DOI	10.1016/j.palaeo.2019.109504
通讯作者	Sun, Jimin(jmsun@mail.iggcas.ac.cn)
英文摘要	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.
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关键词	HYDROGEN-ISOTOPIC COMPOSITION ; EOCENE PALYNOLOGICAL RECORD ; ANTARCTIC ICE-SHEET ; ATMOSPHERIC CO2 ; LUNPOLA BASIN ; DELTA-D ; ORGANIC GEOCHEMISTRY ; TERRESTRIAL PLANTS ; AFRICAN HYDROLOGY ; VEGETATION CHANGE
WOS研究方向	Physical Geography ; Geology ; Paleontology
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000508745600008
资助机构	National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://ir.ieecas.cn/handle/361006/13157]
专题	地球环境研究所_加速器质谱中心
通讯作者	Sun, Jimin
作者单位	1.China Univ Geosci, Fac Earth Sci, Wuhan 430074, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Cenozo Geol & Environm, Beijing 100029, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Ctr Excellence Tibetan Plateau Earth Sci, Beijing, Peoples R China 5.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China 6.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing 100101, 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.