干旱区生态环境知识资源中心(Arid): Onset of Xiashu loess deposition in southern China by 0.9 Ma and its implications for regional aridification

Arid

	Onset of Xiashu loess deposition in southern China by 0.9 Ma and its implications for regional aridification
	Li Xusheng; Han Zhiyong; Lu Huayu; Chen Yingyong; Li Yang; Yuan Xiaokang; Zhou Yuwen; Jiang Mengyao; Lv Cunjuan
来源期刊	Science China. Earth Sciences
ISSN	1674-7313
出版年	2018
卷号	61 期号:3 页码:256-269
英文摘要	The Xiashu loess is a typical Quaternary eolian deposit in southern China and represents an important terrestrial paleoclimate archive in this low-latitude monsoon region. However, the chronological framework of Xiashu loess deposition has yet to be established. Determining the timing of the onset of Xiashu loess deposition will allow researchers to better understand late Quaternary aridification across the Asian continent, the evolution of the East Asian monsoon and regional environmental changes in subtropical regions. Therefore, in this study, a systematic chronological study of the Xiashu loess is conducted to answer this question. For the first time, magnetostratigraphic classification reveals that the Matuyama/Brunhes (M/B) reversal is present in the Xiashu loess at two sites in Jiangsu Province, the Qingshan profile at Yizheng and the Dagang core in Zhenjiang. Based on the results of magnetostratigraphy and optically stimulated luminescence (OSL) dating, the age of the lower boundary of the Xiashu loess is estimated to be approximately 0.9 Ma. Consequently, this Xiashu loess deposit is the oldest reported to date and is comparable in age to the red soil deposit in Xuancheng, Anhui Province. The onset of Xiashu loess deposition by 0.9 Ma represents the further expansion of arid range in Asia in the late Quaternary in response to significant aridification and winter monsoon strengthening in this subtropical region. We suggest that these climate changes were primarily driven by global cooling and an increase in high-latitude ice volume in the Northern Hemisphere and that the initiation of Xiashu loess accumulation was a regional response of southern China to the 0.9 Ma global cooling event.
英文关键词	Xiashu loess Chronology Magnetic stratigraphy Aridification East Asian monsoon
类型	Article
语种	英语
收录类别	CSCD
WOS研究方向	Meteorology & Atmospheric Sciences
CSCD记录号	CSCD:6190155
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/335918
作者单位	Li Xusheng, School of Geographic and Oceanographic Sciences, Nanjing University, Nanjing, Jiangsu 210023, China.; Han Zhiyong, School of Geographic and Oceanographic Sciences, Nanjing University, Nanjing, Jiangsu 210023, China.; Li Yang, School of Geographic and Oceanographic Sciences, Nanjing University, Nanjing, Jiangsu 210023, China.; Yuan Xiaokang, School of Geographic and Oceanographic Sciences, Nanjing University, Nanjing, Jiangsu 210023, China.; Zhou Yuwen, School of Geographic and Oceanographic Sciences, Nanjing University, Nanjing, Jiangsu 210023, China.; Jiang Mengyao, School of Geographic and Oceanographic Sciences, Nanjing University, Nanjing, Jiangsu 210023, China.; Lv Cunjuan, School of Geographic and Oceanographic Sciences, Nanjing University, Nanjing, Jiangsu 210023, China.; Lu Huayu, School of Geographic and Oceanographic Sciences, Nanjing University;;CAS Center for Excellence in Tibetan Plateau Earth Sciences, ;;CAS Center for Excellence in Tibetan Plateau Earth Sciences, Nanjing;;, ;;Be...
推荐引用方式 GB/T 7714	Li Xusheng,Han Zhiyong,Lu Huayu,et al. Onset of Xiashu loess deposition in southern China by 0.9 Ma and its implications for regional aridification[J],2018,61(3):256-269.
APA	Li Xusheng.,Han Zhiyong.,Lu Huayu.,Chen Yingyong.,Li Yang.,...&Lv Cunjuan.(2018).Onset of Xiashu loess deposition in southern China by 0.9 Ma and its implications for regional aridification.Science China. Earth Sciences,61(3),256-269.
MLA	Li Xusheng,et al."Onset of Xiashu loess deposition in southern China by 0.9 Ma and its implications for regional aridification".Science China. Earth Sciences 61.3(2018):256-269.