干旱区生态环境知识资源中心(Arid): Paleoclimatic record from the clay mineralogy of Quaternary sediments of drill core DWJ from Jiudong subbasin (western Hexi Corridor), NW China

Arid

DOI	10.1017/qua.2019.50
	Paleoclimatic record from the clay mineralogy of Quaternary sediments of drill core DWJ from Jiudong subbasin (western Hexi Corridor), NW China
	Chen, Dianbao; Pan, Baotian; Ma, Jinfeng; Hu, Xiaofei; Geng, Haopeng; Pang, Hongli
通讯作者	Chen, Dianbao
来源期刊	QUATERNARY RESEARCH
ISSN	0033-5894
EISSN	1096-0287
出版年	2020
卷号	93 期号:1 页码:124-138
英文摘要	The thick sedimentary deposits of the Jiudong subbasin in the western Hexi Corridor of NW China can potentially provide important records of climate change in arid and semiarid areas subject to the interaction of the East Asian summer monsoon (EASM) and the westerlies. Here we present the results of a study of the clay mineralogy of the sediments of drill core DWJ from the Jiudong subbasin. The clay minerals consist mainly of illite, followed by chlorite, kaolinite, and smectite. The clay mineral assemblages are used to define four paleoclimatic stages since similar to 1.8 Ma: (1) During similar to 1.8-1.2 Ma, the climate was relatively cold and arid; (2) during similar to 1.2-0.9 Ma, it was relatively warm and wet, with strongly seasonal precipitation; (3) during similar to 0.9-0.3 Ma, there was a long-term trend of cooling and drying; and (4) during similar to 0.3-0.1 Ma, the climate was warmer and wetter than during the previous period, with strongly seasonal precipitation. The paleoclimatic record of the Jiudong subbasin since similar to 1.8 Ma is consistent with records from the Tengger Desert and typical monsoonal areas. This suggests that the EASM penetrated into the central regions of the North Qilian Shan and Zhangye-Jiudong subbasin during similar to 1.2-0.9 and similar to 0.3-0.1 Ma.
英文关键词	Clay minerals Drill core Paleoclimatic reconstruction Jiudong subbasin
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000506951900007
WOS关键词	HOLOCENE LOESS SEDIMENTATION ; ASIAN SUMMER MONSOON ; QILIAN SHAN CHINA ; TIBETAN PLATEAU ; GRAIN-SIZE ; EAST GREENLAND ; EVOLUTION ; BASIN ; UPLIFT ; PLEISTOCENE
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向	Physical Geography ; Geology
EI主题词	2020-01-01
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/2XILL650/311997
作者单位	Lanzhou Univ, Coll Earth & Environm Sci, MOE Key Lab Western Chinas Environm Syst, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Chen, Dianbao,Pan, Baotian,Ma, Jinfeng,et al. Paleoclimatic record from the clay mineralogy of Quaternary sediments of drill core DWJ from Jiudong subbasin (western Hexi Corridor), NW China[J]. 兰州大学,2020,93(1):124-138.
APA	Chen, Dianbao,Pan, Baotian,Ma, Jinfeng,Hu, Xiaofei,Geng, Haopeng,&Pang, Hongli.(2020).Paleoclimatic record from the clay mineralogy of Quaternary sediments of drill core DWJ from Jiudong subbasin (western Hexi Corridor), NW China.QUATERNARY RESEARCH,93(1),124-138.
MLA	Chen, Dianbao,et al."Paleoclimatic record from the clay mineralogy of Quaternary sediments of drill core DWJ from Jiudong subbasin (western Hexi Corridor), NW China".QUATERNARY RESEARCH 93.1(2020):124-138.