干旱区生态环境知识资源中心(Arid): Late Pleistocene hydroclimatic variabilities in arid north-west China: geochemical evidence from Balikun Lake, eastern Tienshan, China

Arid

DOI	10.1002/jqs.3288
	Late Pleistocene hydroclimatic variabilities in arid north-west China: geochemical evidence from Balikun Lake, eastern Tienshan, China
	Zhao, Yongtao; An, Cheng-Bang; Zhou, Aifeng; Zhang, Xiaonan; Zhao, Jiaju; Dong, Weimiao; Miao, Yunfa
通讯作者	Zhao, YT (corresponding author), Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Desert & Desertificat, Lanzhou, Peoples R China. ; Zhao, YT (corresponding author), Lanzhou Univ, Coll Earth & Environm Sci, Minist Educ, Key Lab Western Chinas Environm Syst, Lanzhou, Peoples R China.
来源期刊	JOURNAL OF QUATERNARY SCIENCE
ISSN	0267-8179
EISSN	1099-1417
出版年	2021
卷号	36 期号:3 页码:415-425
英文摘要	Reconstructing the environmental and hydrological response to millennial-scale fluctuations of climate-sensitive areas of mid-latitudes is crucial to understanding the Late Pleistocene climate in terrestrial inland regions. We use sedimentological and geochemical proxies (e.g. lithology, gain size, loss-on-ignition, soluble salts, X-ray fluorescence elements) from Balikun Lake in the eastern Tienshan Mountains, to elucidate variations in sedimentation, water chemistry and watershed weathering intensity of the Late Pleistocene interval (similar to 20-60 ka). The record documents high-frequency oscillations and alternating hydrological patterns on (multi-) millennial timescales. Balikun Lake changes from nearly fresh to brackish and finally to hypersaline conditions during MIS3. The warm and wet climate during the early MIS3 facilitated regional vegetation and bioproductivity. Halite sedimentation took place from the middle to late MIS3, indicating a gradual drying trend. This reduced the lake area and vegetation cover, as well as weakened the chemical weathering rates of the watershed. These new interpretations challenge the idea of climate amelioration with the highest lake level and wettest conditions prevailing in the arid areas of north-west China during the late MIS3, indicating a possible westerlies-dominated Late Pleistocene climate in these areas. The evolution of the palaeohydrological regime and climate change in the Balikun Basin correlated well with the millennial-scale high-latitude Atlantic climate superimposed on the Northern Hemisphere summer insolation.
英文关键词	arid western China Balikun Lake lake evolution MIS3 weathering
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000626625800001
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向	Physical Geography ; Geology
来源机构	兰州大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/350977
作者单位	[Zhao, Yongtao; Miao, Yunfa] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Desert & Desertificat, Lanzhou, Peoples R China; [Zhao, Yongtao; An, Cheng-Bang; Zhou, Aifeng; Zhang, Xiaonan; Zhao, Jiaju] Lanzhou Univ, Coll Earth & Environm Sci, Minist Educ, Key Lab Western Chinas Environm Syst, Lanzhou, Peoples R China; [Dong, Weimiao] Fudan Univ, Dept Cultural Heritage & Museol, Shanghai, Peoples R China; [Dong, Weimiao] Fudan Univ, Inst Archaeol Sci, Shanghai, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Yongtao,An, Cheng-Bang,Zhou, Aifeng,et al. Late Pleistocene hydroclimatic variabilities in arid north-west China: geochemical evidence from Balikun Lake, eastern Tienshan, China[J]. 兰州大学,2021,36(3):415-425.
APA	Zhao, Yongtao.,An, Cheng-Bang.,Zhou, Aifeng.,Zhang, Xiaonan.,Zhao, Jiaju.,...&Miao, Yunfa.(2021).Late Pleistocene hydroclimatic variabilities in arid north-west China: geochemical evidence from Balikun Lake, eastern Tienshan, China.JOURNAL OF QUATERNARY SCIENCE,36(3),415-425.
MLA	Zhao, Yongtao,et al."Late Pleistocene hydroclimatic variabilities in arid north-west China: geochemical evidence from Balikun Lake, eastern Tienshan, China".JOURNAL OF QUATERNARY SCIENCE 36.3(2021):415-425.