中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Volcanic lavas of the Yixian Formation in western Liaoning province, China: Products of lower crust delamination or magma mixing?

文献类型:期刊论文

作者Zhang HongFu1; Shao JiAn2
刊名ACTA PETROLOGICA SINICA
出版日期2008
卷号24期号:1页码:37-48
关键词western Liaoning province Yixian Formation volcanic lava magma mixing lithosphere extension
ISSN号1000-0569
文献子类Article
英文摘要The authors, based on the systematics of all the published major, trace elemental and isotopic data of volcanic lavas from the Yixian Formation, western Liaoning Province, found that the volcanic lavas of the Yixian Formation are composed dominantly of mafic-intermediate components with the increasing intermediate-acidic components in the upper sequence. Their high Mg-# values and adakitic geochemical characteristics are not the primary features of the initial magma, and thus cannot be regarded as the powerful evidence for the existence of lower crust delamination in the region. The mafic components of the Yixian Formation were originally derived from the lithospheric mantle, which were previously modified by the subducted oceanic crust. The mixing of mafic magma with ancient lower crust-derived magma to a certain degree produced the various volcanic lavas of the Yixian Formation. Therefore, volcanic lavas of the Yixian Formation are the products of magma mixing rather than lower crust delamination. Basaltic underplated lower crust was involved in the origin of these volcanic lavas, with little and limited contribution of the asthenosphere.
WOS关键词LITHOSPHERIC MANTLE BENEATH ; HIGH-MG ANDESITES ; EASTERN CHINA ; EXPERIMENTAL CONSTRAINTS ; TRACE-ELEMENT ; PB ISOTOPE ; CRATON ; BASALTS ; ADAKITES ; ROCKS
WOS研究方向Geology
语种英语
WOS记录号WOS:000254774000003
出版者SCIENCE CHINA PRESS
源URL[http://ir.iggcas.ac.cn/handle/132A11/69876]  
专题中国科学院地质与地球物理研究所
通讯作者Zhang HongFu
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
2.Peking Univ, Sch Earth & Space Sci, Beijing 100871, Peoples R China
推荐引用方式
GB/T 7714
Zhang HongFu,Shao JiAn. Volcanic lavas of the Yixian Formation in western Liaoning province, China: Products of lower crust delamination or magma mixing?[J]. ACTA PETROLOGICA SINICA,2008,24(1):37-48.
APA Zhang HongFu,&Shao JiAn.(2008).Volcanic lavas of the Yixian Formation in western Liaoning province, China: Products of lower crust delamination or magma mixing?.ACTA PETROLOGICA SINICA,24(1),37-48.
MLA Zhang HongFu,et al."Volcanic lavas of the Yixian Formation in western Liaoning province, China: Products of lower crust delamination or magma mixing?".ACTA PETROLOGICA SINICA 24.1(2008):37-48.

入库方式: OAI收割

来源:地质与地球物理研究所

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