Geochemistry and Mineralogy of Two Contrasting Cretaceous Lavas: Implications for Lithospheric Mantle Evolution beneath the Northeastern North China Craton | |
Shi, Guanghai1; Zhu, Rixiang2; Jiang, Neng2; Jia, Xiuming3 | |
刊名 | INTERNATIONAL GEOLOGY REVIEW
![]() |
2008-11-01 | |
卷号 | 50期号:11页码:1040-1053 |
ISSN号 | 0020-6814 |
DOI | 10.2747/0020-6814.50.11.1040 |
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 |
出版者 | BELLWETHER PUBL LTD |
WOS记录号 | WOS:000260053500006 |
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) |
内容类型 | 期刊论文 |
源URL | [http://ir.iggcas.ac.cn/handle/132A11/70256] ![]() |
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. |
个性服务 |
查看访问统计 |
相关权益政策 |
暂无数据 |
收藏/分享 |
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。
修改评论