Nature of mantle source contributions and crystal differentiation in the petrogenesis of the 1.78 Ga mafic dykes in the central North China craton
文献类型：期刊论文
| 作者 | Peng, Peng; Zhai, Ming-Guo; Guo, Jing-Hui; Kusky, Tim; Zhao, Tai-Ping |
| 刊名 | GONDWANA RESEARCH
 |
| 出版日期 | 2007-08-01 |
| 卷号 | 12期号:1-2页码:29-46 |
| 关键词 | North China craton late Palaeoproterozoic mafic dyke swarms large igneous province petrogenesis plume |
| ISSN号 | 1342-937X |
| DOI | 10.1016/j.gr.2006.10.022 |
| 文献子类 | Article |
| 英文摘要 | Circa 1.78 Ga mafic dyke swarms and some coeval volcanic associations constitute a Large Igneous Province in the central North China craton. The 1st generation of dykes intruded at ca. 1780 Ma and is chemically delineated into 3 groups: the LT Group is gabbroic and has low-Fe-Ti contents, acting as parental magma; the NW Group is high in Fe-Ti-contents and doleritic with an iron-enriched trend; whereas the EW Group is doleritic to andesitic and crystallized frorn relict siliceous liquids with a silica-enriched trend. They have an EM-I type source and record integral magmatic processes. These include contamination of lithospheric material and assimilation of crustal melts with in-situ crystallization in a magma chamber (the LT Group) and fractional crystallization in magma channels (the NW Group) and even with additional alteration (the EW Group). The 2nd generation is slightly younger (ca. 1760 Ma) and scarcely distributed. It has high-Fe-Ti contents, originated from a mixing source of DM and EM-I types. The dykes could be associated with a palaeo-plume: the 1st generation represents lower mantle melts generated from the plume head, whereas the 2nd generation records extra melts from asthenosphere entrained by the plume tail. (c) 2006 International Association for Gondwana Research. Published by Elsevier B.V. All rights reserved. |
| WOS关键词 | ND ISOTOPIC CONSTRAINTS ; CENTRAL OROGENIC BELT ; FE-RICH ; SKAERGAARD INTRUSION ; TECTONIC EVOLUTION ; THOLEIITIC MAGMAS ; FLOOD BASALTS ; XIONGER GROUP ; ZIRCON AGES ; ROCKS |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000248283100003 |
| 出版者 | ELSEVIER SCIENCE BV |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/67534]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Peng, Peng |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Mineral Res, Inst Geol & Geophys, Beijing 100029, Peoples R China 2.Chinese State Key Lab Lithosphere Evolut, Beijing 100029, Peoples R China 3.St Louis Univ, Dept Earth & Atmospher Sci, St Louis, MO 63103 USA 4.Chinese Acad Sci, Guangzhou Inst Geochem, Guangzhou 510640, Peoples R China |
| 推荐引用方式 GB/T 7714 | Peng, Peng,Zhai, Ming-Guo,Guo, Jing-Hui,et al. Nature of mantle source contributions and crystal differentiation in the petrogenesis of the 1.78 Ga mafic dykes in the central North China craton[J]. GONDWANA RESEARCH,2007,12(1-2):29-46. |
| APA | Peng, Peng,Zhai, Ming-Guo,Guo, Jing-Hui,Kusky, Tim,&Zhao, Tai-Ping.(2007).Nature of mantle source contributions and crystal differentiation in the petrogenesis of the 1.78 Ga mafic dykes in the central North China craton.GONDWANA RESEARCH,12(1-2),29-46. |
| MLA | Peng, Peng,et al."Nature of mantle source contributions and crystal differentiation in the petrogenesis of the 1.78 Ga mafic dykes in the central North China craton".GONDWANA RESEARCH 12.1-2(2007):29-46. |
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。