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Geochemistry and Mineralogy of Two Contrasting Cretaceous Lavas: Implications for Lithospheric Mantle Evolution beneath the Northeastern North China Craton

文献类型：期刊论文

作者Shi, Guanghai1; Zhu, Rixiang2; Jiang, Neng2; Jia, Xiuming3
刊名INTERNATIONAL GEOLOGY REVIEW
出版日期2008-11-01
卷号50期号:11页码:1040-1053
ISSN号0020-6814
DOI10.2747/0020-6814.50.11.1040
文献子类Article
英文摘要A combined geochemical and mineralogical study has been conducted on a volcanic sequence at Jianguo, northeastern North China craton (NCC). This sequence contains two contrasting rock types, the lower andesitic lava and the upper basaltic lava. The lower lava is comprised of Cr-spinel (chromite mostly)-bearing andesites, whereas the upper lava consists of titanomagnetite (up to 5965 mol% Usp)-bearing basalts. Ar-40/Ar-39 dating shows that the Jianguo andesites and basalts are 116.8 +/- 3.0 Ma and 105.5 +/- 0.5 Ma, respectively. The basalts have initial Sr-Nd isotopic ratios characteristic of mid-ocean ridge basalt (MORB) and have been interpreted as derived from MORB-type asthenosphere. The andesites, with evolved Sr-Nd isotope features and negative Ta and Nb anomalies, are interpreted to have been ultimately derived from MORB-type asthenosphere accompanied by combined assimilation and fractional crystallization. This suggestion is applicable to the genesis of two other coeval andesites nearby. These geochemical contrasts imply that the lithospheric mantle beneath the eastern part of NCC was considerably thinned by ca. 117 Ma.
WOS关键词CENOZOIC VOLCANIC-ROCKS ; HIGH-MG ANDESITES ; EASTERN CHINA ; LIAONING PROVINCE ; INNER-MONGOLIA ; BASALTS ; PB ; PALEOINTENSITY ; CONSTRAINTS ; TITANOMAGNETITE
WOS研究方向Geology
语种英语
WOS记录号WOS:000260053500006
出版者BELLWETHER PUBL LTD
资助机构Program for the New Century Excellent Talents in China(NCET-07-0771) ; Program for the New Century Excellent Talents in China(NCET-07-0771) ; National Science Foundation of China(40672046 ; National Science Foundation of China(40672046 ; 40572049) ; 40572049) ; Program for the New Century Excellent Talents in China(NCET-07-0771) ; Program for the New Century Excellent Talents in China(NCET-07-0771) ; National Science Foundation of China(40672046 ; National Science Foundation of China(40672046 ; 40572049) ; 40572049) ; Program for the New Century Excellent Talents in China(NCET-07-0771) ; Program for the New Century Excellent Talents in China(NCET-07-0771) ; National Science Foundation of China(40672046 ; National Science Foundation of China(40672046 ; 40572049) ; 40572049) ; Program for the New Century Excellent Talents in China(NCET-07-0771) ; Program for the New Century Excellent Talents in China(NCET-07-0771) ; National Science Foundation of China(40672046 ; National Science Foundation of China(40672046 ; 40572049) ; 40572049)
源URL[http://ir.iggcas.ac.cn/handle/132A11/70254]  
专题中国科学院地质与地球物理研究所
通讯作者Shi, Guanghai
作者单位1.China Univ Geosci, Beijing 100083, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China
3.Taiyuan Univ Technol, Taiyuan 030024, Shanxi, Peoples R China
推荐引用方式
GB/T 7714		 Shi, Guanghai,Zhu, Rixiang,Jiang, Neng,et al. Geochemistry and Mineralogy of Two Contrasting Cretaceous Lavas: Implications for Lithospheric Mantle Evolution beneath the Northeastern North China Craton[J]. INTERNATIONAL GEOLOGY REVIEW,2008,50(11):1040-1053.
APA Shi, Guanghai,Zhu, Rixiang,Jiang, Neng,&Jia, Xiuming.(2008).Geochemistry and Mineralogy of Two Contrasting Cretaceous Lavas: Implications for Lithospheric Mantle Evolution beneath the Northeastern North China Craton.INTERNATIONAL GEOLOGY REVIEW,50(11),1040-1053.
MLA Shi, Guanghai,et al."Geochemistry and Mineralogy of Two Contrasting Cretaceous Lavas: Implications for Lithospheric Mantle Evolution beneath the Northeastern North China Craton".INTERNATIONAL GEOLOGY REVIEW 50.11(2008):1040-1053.

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来源：地质与地球物理研究所

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