中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 地质与地球物理研究所
  3. 中国科学院地质与地球物理研究所
Multi-stage crust-mantle interaction in SE China: Temporal, thermal and compositional constraints from the Mesozoic felsic volcanic rocks in eastern Guangdong-Fujian provinces

文献类型：期刊论文

作者Guo, Feng1; Fan, Weiming1; Li, Chaowen1; Zhao, Liang1; Li, Hongxia1; Yang, Jinhui2
刊名LITHOS
出版日期2012-10-01
卷号150页码:62-84
关键词Crust-mantle interaction Geochemistry Zircon U-Pb-Hf isotopes Felsic volcanic lavas Mesozoic SE China
ISSN号0024-4937
DOI10.1016/j.lithos.2011.12.009
文献子类Article
英文摘要The Mesozoic geology of southeastern (SE) China was characterized by emplacement of voluminous felsic magmas. We present zircon U-Pb-Hf isotopic compositions and whole-rock major and trace elemental compositions of a series of felsic volcanic rocks from the eastern Guangdong and Fujian provinces. The volcanic rocks have been divided into three formations (the Douling, Nanyuan and Shimaoshan Fms.). Zircon U-Pb dating defines three eruption cycles: 168-145 Ma for the Douling Fm., 143-130 Ma for the Nanyuan Fm., and 104-95 Ma for the Shimaoshan Fm. In situ Hf isotope analyses on dated zircon yield an epsilon(Hf)(t) range of -13.8 to +6.9 and a T-DM(Hf) range from 1400 to 486 Ma with a peak at ca. 930 Ma. The majority of the Mesozoic felsic lavas have more radiogenic Hf than that of metamorphic basement rocks and related igneous rocks, requiring the involvement of a juvenile component in their origin. The Mesozoic felsic magmas are predominantly dacites and rhyolites - with only minor basalt and andesite - and show relatively homogeneous Hf isotopic compositions of zircon in single sample. Combined these data indicated that neither differentiation of a mantle-derived magma, nor mixing of magmas from different sources, was a dominant petrogenetic process. Both the epsilon(Hf)(t) of zircon and the magma temperature increase from the Douling and Nanyuan Fms. to the Shimaoshan Fm. All these facts imply an increasing contribution of contemporaneous underplated hot and dry mantle-derived magmas, as both a heat source inducing crustal melting and as a source of material (melt) that variably mixed with the local crustal melts. The felsic crustal melt component was generated at amphibolite-facies conditions with a residual assemblage of plagioclase +/- hornblende +/- garnet +/- zircon. Our results suggest a progressive role of crust-mantle interaction in generating the episodic felsic volcanic eruption during the Mesozoic. (C) 2011 Published by Elsevier B.V.
WOS关键词LU-HF ISOTOPES ; U-PB ZIRCON ; A-TYPE GRANITES ; SOUTH CHINA ; SOUTHEASTERN CHINA ; CATHAYSIA BLOCK ; PERALUMINOUS GRANITES ; TRACE-ELEMENTS ; TECTONIC IMPLICATIONS ; HUNAN PROVINCE
WOS研究方向Geochemistry & Geophysics ; Mineralogy
语种英语
WOS记录号WOS:000309616000006
出版者ELSEVIER SCIENCE BV
资助机构Chinese Academy of Sciences(KZCX1-YW-15-2 ; Chinese Academy of Sciences(KZCX1-YW-15-2 ; KZCX2-YW-Q08-3-7) ; KZCX2-YW-Q08-3-7) ; Chinese Academy of Sciences(KZCX1-YW-15-2 ; Chinese Academy of Sciences(KZCX1-YW-15-2 ; KZCX2-YW-Q08-3-7) ; KZCX2-YW-Q08-3-7) ; Chinese Academy of Sciences(KZCX1-YW-15-2 ; Chinese Academy of Sciences(KZCX1-YW-15-2 ; KZCX2-YW-Q08-3-7) ; KZCX2-YW-Q08-3-7) ; Chinese Academy of Sciences(KZCX1-YW-15-2 ; Chinese Academy of Sciences(KZCX1-YW-15-2 ; KZCX2-YW-Q08-3-7) ; KZCX2-YW-Q08-3-7)
源URL[http://ir.iggcas.ac.cn/handle/132A11/84280]  
专题中国科学院地质与地球物理研究所
通讯作者Guo, Feng
作者单位1.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Isotope Geochem, Guangzhou 510640, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Guo, Feng,Fan, Weiming,Li, Chaowen,et al. Multi-stage crust-mantle interaction in SE China: Temporal, thermal and compositional constraints from the Mesozoic felsic volcanic rocks in eastern Guangdong-Fujian provinces[J]. LITHOS,2012,150:62-84.
APA Guo, Feng,Fan, Weiming,Li, Chaowen,Zhao, Liang,Li, Hongxia,&Yang, Jinhui.(2012).Multi-stage crust-mantle interaction in SE China: Temporal, thermal and compositional constraints from the Mesozoic felsic volcanic rocks in eastern Guangdong-Fujian provinces.LITHOS,150,62-84.
MLA Guo, Feng,et al."Multi-stage crust-mantle interaction in SE China: Temporal, thermal and compositional constraints from the Mesozoic felsic volcanic rocks in eastern Guangdong-Fujian provinces".LITHOS 150(2012):62-84.

入库方式： OAI收割

来源：地质与地球物理研究所

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。