气候变化领域集成服务门户(CCPortal): Clay-mineral distribution in recent deep-sea sediments around Taiwan: Implications for sediment dispersal processes

CCPortal

DOI	10.1016/j.tecto.2021.228974
	Clay-mineral distribution in recent deep-sea sediments around Taiwan: Implications for sediment dispersal processes
	Nayak K.; Lin A.T.-S.; Huang K.-F.; Liu Z.; Babonneau N.; Ratzov G.; Pillutla R.K.; Das P.; Hsu S.-K.
发表日期	2021
ISSN	00401951
卷号	814
英文摘要	Clay-mineralogy study of Taiwanese river-mouth sediments, recent deep-water seafloor sediments around Taiwan, along with sediments collected from the Tainan shelf edge, have been investigated to access the source and transport of detrital fine-grained sediments. We determined the clay mineralogy in both hemipelagites and turbidites in the top 50 cm of the deep-sea sediment cores to infer how sediments are dispersed through river-fed turbidity currents, hypopycnal plumes, and oceanic currents. Our results show that the clay mineral assemblages in both hemipelagites and turbidites of different provinces change gradually between two major end-members: illite+chlorite and smectite. They are predominantly sourced from Taiwan and Luzon, respectively. The relative abundances of clay minerals in turbidites and hemipelagites are quite similar in most of the cores. Therefore, we argue that the adjacent turbidites and hemipelagites of a core share common detrital clay sources. We found that smectite is relatively abundant around Taiwan, indicating that the Kuroshio Current is an important transportation system, which brings smectite from Luzon. Besides, the river-related canyon systems consist dominantly of illite and chlorite, and less smectite, indicating that the smectite brought about by the Kuroshio Current is diluted by river-fed hyperpycnal and hypopycnal flows. This also implies that flood-induced turbidity currents are efficient agents for transporting Taiwan-derived sediments into the neighboring deep-sea basins. © 2021 Elsevier B.V.
关键词	Clay minerals Kuroshio current Luzon Provenance River-fed turbidity currents Taiwan
英文关键词	Ocean currents; Rivers; Sediment transport; Turbidity; Underwater mineral resources; Underwater mineralogy; Clay mineral assemblages; Fine-grained sediment; Mineral distribution; Relative abundance; Seafloor sediments; Sediment dispersal process; Transportation system; Turbidity current; Clay minerals; clay mineral; deep-sea sediment; mineralogy; provenance; sediment core; sediment transport; turbidity current; Kuroshio Current; Luzon; Pacific Ocean; Philippines; Taiwan
语种	英语
来源期刊	Tectonophysics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/208041
作者单位	Earth System Science Program, Taiwan International Graduate Program, Academia Sinica and National Central University, Taiwan; Department of Earth Sciences, National Central University, Taiwan; Institute of Earth Sciences, Academia Sinica, Taiwan; State Key Laboratory of Marine Geology, Tongji University, Shanghai, China; UMR6538 Laboratoire Geosciences Océan, IUEM, Université de Brest, France; Université Côte d'Azur, CNRS, Observatoire de la Côte d'Azur, IRD, Géoazur, Nice, France
推荐引用方式 GB/T 7714	Nayak K.,Lin A.T.-S.,Huang K.-F.,et al. Clay-mineral distribution in recent deep-sea sediments around Taiwan: Implications for sediment dispersal processes[J],2021,814.
APA	Nayak K..,Lin A.T.-S..,Huang K.-F..,Liu Z..,Babonneau N..,...&Hsu S.-K..(2021).Clay-mineral distribution in recent deep-sea sediments around Taiwan: Implications for sediment dispersal processes.Tectonophysics,814.
MLA	Nayak K.,et al."Clay-mineral distribution in recent deep-sea sediments around Taiwan: Implications for sediment dispersal processes".Tectonophysics 814(2021).