Heavy mineral record from the east China sea inner shelf: Implications for provenance and climate changes over the past 1500 years

doi:10.1016/j.csr.2021.104488

CORC > 海洋研究所 > 中国科学院海洋研究所 > 海洋地质与环境重点实验室

	Heavy mineral record from the east China sea inner shelf: Implications for provenance and climate changes over the past 1500 years
	Zhang, Kaidi 5,6; Li, Anchun 1,5,6; Liu, Xiting 1,4; Chen, Min-Te 2,3,7; Lu, Jian 1,5,6; Zhang, Jin 5,6; Wang, Hongli 6
刊名	CONTINENTAL SHELF RESEARCH
	2021-09-01
卷号	226 页码:12
关键词	Mud wedge Detrital mineral Sediment provenance Climatic change The East China Sea
ISSN号	0278-4343
DOI	10.1016/j.csr.2021.104488
通讯作者	Li, Anchun(acli@qdio.ac.cn)
英文摘要	The heavy mineral composition and sensitive grain size changes from core SS4 retrieved from the mud wedge on the East China Sea inner shelf have been studied for better understanding provenance variations in the sediment and climate changes during the last similar to 1500 yr. High dolomite content and occurrence of ubiquitous polysynthetic mica indicate that the sediments in core SS4 were mainly derived from the Yangtze River, while the relatively high epidote content represent the contribution of small local rivers from Zhejiang and Fujian provinces. The substantial decrease in the epidote/hornblende ratio since similar to 730 yr BP manifests a decline in the relative contribution of sediment from the small local rivers to the core. We propose that the changes in drought/flood conditions in response to the East Asian winter monsoon (EAWM) and human activities might have been mainly responsible for changes in sedimentary characteristics. During 1400-730 yr BP, the core sediments were characterized by relatively finer sensitive grain size and high epidote/hornblende ratio, due to a possibly weaker EAWM (i.e., less Yangtze River-derived sediment transported by the southward coast current). This time interval coincides with the Sui-Tang Warm Period (1400-1130 yr BP) in China and the Medieval Warm Period (1000-730 yr BP) on a broader regional scale. The prolonged warm periods were, however, interrupted by three short cold phases at 1350-1280 yr BP, 1130-1000 yr BP and 870-750 yr BP, characterized by coarse sensitive grain size and decreased epidote/hornblende ratio. Between 360 and 150 yr BP, the sensitive grain size significantly coarsened, which corresponded to the Little Ice Age. Our new findings suggest that sedimentation processes of mud wedge formation are responsive to natural environmental change and human activity.
资助项目	National Natural Science Foundation of China[41806056] ; National Natural Science Foundation of China[41976053] ; Open Fund of the Key Laboratory of Marine Geology and Environment, Chinese Academy of Sciences[MGE2018KG08]
WOS研究方向	Oceanography
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000687195200005
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/176221]
专题	海洋研究所_海洋地质与环境重点实验室
通讯作者	Li, Anchun
作者单位	1.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Geol, Qingdao 266061, Peoples R China 2.Natl Taiwan Ocean Univ, Ctr Excellence Oceans, Keelung 202, Taiwan 3.Natl Taiwan Ocean Univ, Inst Earth Sci, Keelung 202, Taiwan 4.Ocean Univ China, Coll Marine Geosci, Key Lab Submarine Geosci & Prospecting Technol, Qingdao 266100, Peoples R China 5.Chinese Acad Sci, Ctr Ocean Megasci, Qingdao 266071, Peoples R China 6.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China 7.Natl Taiwan Ocean Univ, Ctr Excellence Ocean Engn, Keelung 202, Taiwan
推荐引用方式 GB/T 7714	Zhang, Kaidi,Li, Anchun,Liu, Xiting,et al. Heavy mineral record from the east China sea inner shelf: Implications for provenance and climate changes over the past 1500 years[J]. CONTINENTAL SHELF RESEARCH,2021,226:12.
APA	Zhang, Kaidi.,Li, Anchun.,Liu, Xiting.,Chen, Min-Te.,Lu, Jian.,...&Wang, Hongli.(2021).Heavy mineral record from the east China sea inner shelf: Implications for provenance and climate changes over the past 1500 years.CONTINENTAL SHELF RESEARCH,226,12.
MLA	Zhang, Kaidi,et al."Heavy mineral record from the east China sea inner shelf: Implications for provenance and climate changes over the past 1500 years".CONTINENTAL SHELF RESEARCH 226(2021):12.