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Geochemical comparison between oceanic and continental arc volcanic rocks: Insights to arc magmatism

文献类型：期刊论文

作者Chen, Long1,3,5; Feng, Kaixin1,5; Deng, Jianghong4; Li, Dongyong1,5; Li, Sanzhong1,3,5; Somerville, Ian2
刊名GEOLOGICAL JOURNAL
出版日期2023-07-25
页码24
关键词arc magmatism continental arc volcanic rocks oceanic arc volcanic rocks slab melt-mantle interaction
ISSN号0072-1050
DOI10.1002/gj.4847
通讯作者Chen, Long(chenlong@ouc.edu.cn)
英文摘要Compositional differences between continental and oceanic arc volcanic rocks have long been recognized; however, our understanding of them is incomplete. This study presents a comprehensive geochemical comparison, including major, trace and Sr-Nd-Pb isotope compositions, between global continental and oceanic arc volcanic rocks. Our data compilation reveals that volcanic rocks from a single oceanic arc occupy basaltic to basaltic-andesitic average lithochemical compositions, except for volcanic rocks from the Lesser Antilles arc, which occupies an andesitic average lithochemical composition, similar to the bulk composition of volcanic rocks from single continental arcs. The composition of the average continental arc volcanic rocks, the average Lesser Antilles arc volcanic rocks and the average oceanic arc volcanic rocks are different in many ways, which span the entire compositional range from basalts to rhyolites, and are reflected in major, trace element and Sr-Nd-Pb isotope compositions. Qualitative geochemical analyses and semi-quantitative modelling suggest that the compositional differences in mafic arc volcanic rocks can be accounted for by differences in source mixing between mantle wedge peridotite and slab-derived crustal components. Slab melts-peridotite source mixing governs most of the lithochemical features of the continental arc and the Lesser Antilles arc mafic volcanic rocks, which is especially true for Sr-Nd-Pb isotopes. On the other hand, such source mixing occurred to a lesser extent in the petrogenesis of oceanic arc mafic volcanic rocks. Magma evolution processes such as fractional crystallization may further modify the lithochemical composition of the arc volcanic rocks, especially the felsic ones, but this is not the governing factor.
WOS关键词ANTILLES ISLAND-ARC ; LESSER-ANTILLES ; SUBDUCTION EROSION ; SEDIMENT SUBDUCTION ; MANTLE WEDGE ; CRUSTAL CONTAMINATION ; CONSTRAINTS ; GENERATION ; EVOLUTION ; PETROGENESIS
资助项目National Natural Science Fonundation of China[92058211] ; National Natural Science Fonundation of China[92155306] ; National Natural Science Fonundation of China[42072061] ; Shandong Outstanding Youth Science Foundation[ZR2022YQ32]
WOS研究方向Geology
语种英语
WOS记录号WOS:001036399400001
出版者WILEY
源URL[http://ir.qdio.ac.cn/handle/337002/182613]  
专题海洋研究所_深海极端环境与生命过程研究中心
通讯作者Chen, Long
作者单位1.Ocean Univ China, Minist Educ MOE, Frontiers Sci Ctr Deep Ocean Multispheres & Earth, Key Lab Submarine Geosci & Prospecting Tech, Qingdao 266100, Peoples R China
2.Univ Coll Dublin, UCD Sch Earth Sci, Dublin, Ireland
3.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Mineral Resources, Qingdao, Peoples R China
4.Chinese Acad Sci, Inst Oceanol, Ctr Deep Sea Res, Ctr Ocean Mega Sci, Qingdao, Peoples R China
5.Ocean Univ China, Coll Marine Geosci, Qingdao 266100, Peoples R China
推荐引用方式
GB/T 7714		 Chen, Long,Feng, Kaixin,Deng, Jianghong,et al. Geochemical comparison between oceanic and continental arc volcanic rocks: Insights to arc magmatism[J]. GEOLOGICAL JOURNAL,2023:24.
APA Chen, Long,Feng, Kaixin,Deng, Jianghong,Li, Dongyong,Li, Sanzhong,&Somerville, Ian.(2023).Geochemical comparison between oceanic and continental arc volcanic rocks: Insights to arc magmatism.GEOLOGICAL JOURNAL,24.
MLA Chen, Long,et al."Geochemical comparison between oceanic and continental arc volcanic rocks: Insights to arc magmatism".GEOLOGICAL JOURNAL (2023):24.

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来源：海洋研究所

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