Magmatic flare-ups in arcs controlled by fluctuations in subduction water flux

doi:10.1016/j.tecto.2024.230457

	Chapman, Timothy 1; Milan, Luke A.1; Zahirovic, Sabin 2; Merdith, Andrew S.3,4; Clarke, Geoffrey L.2; Sun, Mingdao 5; Daczko, Nathan R.6
	Magmatic flare-ups in arcs controlled by fluctuations in subduction water flux
刊名	TECTONOPHYSICS
ISSN号	0040-1951
	2024-10-08
卷号	888 页码:11
DOI	10.1016/j.tecto.2024.230457
语种	英语
WOS研究方向	Geochemistry & Geophysics
摘要	The tempo of subduction-related magmatic activity over geological time is episodic. Despite intense study and its importance to crustal growth, the fundamental drivers of this episodicity remains unclear. We demonstrate quantitatively a first order relationship between arc flare-up events and high subduction flux. The volume of oceanic lithosphere entering the mantle is the key parameter that regulates the proportion and rate of H2O 2 O entering the sub-arc. New estimates of subduction zone H2O 2 O flux over the last 150 million-years indicate a three- to five-fold increase in the proportion of H2O 2 O entering the sub-arc during the most recent global pulse of magmatism. Step changes in H2O 2 O flux enable proportionally greater partial melting in the sub-arc mantle leading to a flare-up episode. Similar magmatic flare-ups in the ancient Earth could be related to variability in slab flux associated with supercontinent cycles.
关键词	Magmatic flare-ups Magma flux Continental arc Earth's tempo Global water budgets Phase equilibria
WOS记录号	WOS:001294847800001
收录类别	SCI
引用统计	正在获取...
文献类型	期刊论文
条目标识符	http://ir.gig.ac.cn/handle/344008/80588
专题	同位素地球化学国家重点实验室
通讯作者	Chapman, Timothy
作者单位	1.Univ New England, Sch Environm & Rural Sci, Earth Sci, Armidale, NSW 2351, Australia 2.Univ Sydney, Sch Geosci, Sydney, NSW 2006, Australia 3.Univ Leeds, Sch Earth & Environm, Woodhouse, Leeds LS2 9JT, England 4.Univ Adelaide, Sch Phys Chem & Earth Sci, Adelaide, SA, Australia 5.Chinese Acad Sci, State Key Lab Isotope Geochem, Guangzhou Inst Geochem, Guangzhou 510640, Peoples R China 6.Macquarie Univ, Dept Earth & Environm Sci, Macquarie Pk, NSW 2109, Australia
推荐引用方式 GB/T 7714	Chapman, Timothy,Milan, Luke A.,Zahirovic, Sabin,et al. Magmatic flare-ups in arcs controlled by fluctuations in subduction water flux[J]. TECTONOPHYSICS,2024,888:11.
APA	Chapman, Timothy.,Milan, Luke A..,Zahirovic, Sabin.,Merdith, Andrew S..,Clarke, Geoffrey L..,...&Daczko, Nathan R..(2024).Magmatic flare-ups in arcs controlled by fluctuations in subduction water flux.TECTONOPHYSICS,888,11.
MLA	Chapman, Timothy,et al."Magmatic flare-ups in arcs controlled by fluctuations in subduction water flux".TECTONOPHYSICS 888(2024):11.