气候变化领域集成服务门户(CCPortal): Evolution of the sedimentary environment on the continental shelf of southeastern Hainan Island under the influences of sea level and climate during the Holocene

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DOI	10.1016/j.jseaes.2024.106023
	Evolution of the sedimentary environment on the continental shelf of southeastern Hainan Island under the influences of sea level and climate during the Holocene
	Xu, Fangjian; Zhang, Yongwei; Hu, Bangqi; Cui, Ruyong; Zhang, Lin; Huang, Wenhe; Chen, Bo
发表日期	2024
ISSN	1367-9120
EISSN	1878-5786
起始页码	263
卷号	263
英文摘要	The South China Sea, which connects the Indian Ocean and the Pacific Ocean, is an important part of the IndoPacific Warm Pool. This study examined the provenance and evolution of the sedimentary environment on the southeastern Hainan Island continental shelf in the northwestern South China Sea through AMS 14C dating, grain size analysis, and clay mineral analysis of sediments from Core QZ4. The clay mineral analysis indicated that the terrigenous detritus originated from Hainan Island, while the grain size data identified three endmembers: EM1 and EM2, corresponding to the fine-grained material transported by the oceanic current system, and EM3, corresponding to the coarse-grained material input by rivers from proximal sources. The sedimentary environment in the study area underwent three stages: foreshore (11.2-9.2 ka BP), nearshore (9.2-6.2 ka BP), and shallow shelf (6.2 ka BP to present). From 11.2 to 6.2 ka BP, the sedimentary environment was mainly controlled by sea level changes, although extreme cold events (such as the 9.4 ka BP and the 8.2 ka BP event) had a significant effect on the southeastern continental shelf of Hainan Island. From 6.2 ka BP to the present, the sedimentary record has mainly been influenced by climate change, and an increase in riverine contribution and the enhancement of chemical weathering may have been caused by rising typhoon intensity or frequency and possibly by an increase in human activities. These findings will be valuable for conducting high-resolution research on typhoons by analyzing sediments on the eastern Hainan Island shelf and neighboring areas.
英文关键词	Sediment provenance; Typhoon; ENSO; Human activity; South China Sea
语种	英语
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:001168077700001
来源期刊	JOURNAL OF ASIAN EARTH SCIENCES
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/303077
作者单位	Hainan University; Ministry of Natural Resources of the People's Republic of China; China Geological Survey; Qingdao Institute of Marine Geology (QIMG); Laoshan Laboratory; China Geological Survey
推荐引用方式 GB/T 7714	Xu, Fangjian,Zhang, Yongwei,Hu, Bangqi,et al. Evolution of the sedimentary environment on the continental shelf of southeastern Hainan Island under the influences of sea level and climate during the Holocene[J],2024,263.
APA	Xu, Fangjian.,Zhang, Yongwei.,Hu, Bangqi.,Cui, Ruyong.,Zhang, Lin.,...&Chen, Bo.(2024).Evolution of the sedimentary environment on the continental shelf of southeastern Hainan Island under the influences of sea level and climate during the Holocene.JOURNAL OF ASIAN EARTH SCIENCES,263.
MLA	Xu, Fangjian,et al."Evolution of the sedimentary environment on the continental shelf of southeastern Hainan Island under the influences of sea level and climate during the Holocene".JOURNAL OF ASIAN EARTH SCIENCES 263(2024).