Geological signature and possible position of the North China block in the supercontinent Rodinia
文献类型：期刊论文
| 作者 | Zhai, MG; Shao, JA; Hao, J; Peng, P |
| 刊名 | GONDWANA RESEARCH
 |
| 出版日期 | 2003-04-01 |
| 卷号 | 6期号:2页码:171-183 |
| 关键词 | North China Baiyan Obo belt North Qinling belt supercontinent Rodinia Grenvillian in China |
| ISSN号 | 1342-937X |
| 文献子类 | Article |
| 英文摘要 | Recent studies suggest that the South China Block (SCB) was located at a central position in the Neoproterozoic supercontinent Rodinia between ca. 1000 Ma and 800 Ma, but fewer studies dealt with the North China Block (NCB) in the reconstruction of Rodinia. The NCB was suggested, in general, to be in a stable cratonic setting from ca. 1650 Ma to ca. 160-140 Ma. Our recent study suggests that there were two metamorphic-magmatic events at similar to1300-1000 Ma and similar to800-650 Main the NCB. Although these events were weak, they have been regarded as marking the assembly (Grenvilleage orogenic event) and breakup (Neoproterozoic mafic dyke swarm and granitoid intrusive) of the supercontinent Rodinia. A possible Grenvillian ophiolite or convergent margin complex in the NCB exists only in the North Qinling end-Mesoproterozoic orogenic belt. The major meta-volcanic-sedimentary rocks in this complex belong to the Kuanping Group and are associated with gabbros and serpentinized peridotites. Collisional and post-collisional granites have been recognized along the North Qinling belt. Volcanic and sedimentary rocks along northern margin of the NCB indicate possible continent rift or continental margin environment. The main rock associations of ca. similar to800-650 Ma are mafic dyke swarms with epsilon(Nd)(t) values of enriched mantle. Therefore, this paper suggests that the mafic dykes were possibly related to the breakup of the Rodinian supercontinent. The tectonostratigraphic constraints and palaeomagnetic reconstruction show that the Proterozoic NCB was different from the SCB, but somewhat similar to Siberia. The above features possibly suggest that the NCB, as part of the supercontinent Rodinia, was possibly located in a marginal location not directly connected to the SCB, but likely adjacent to the Siberian Craton. |
| WOS关键词 | NEOPROTEROZOIC GLACIAL ROCKS ; SOUTH CHINA ; TECTONIC EVOLUTION ; EAST ANTARCTICA ; MANTLE PLUME ; SM-ND ; CRATON ; CONFIGURATION ; LAURENTIA ; PALEOMAGNETISM |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000182027700004 |
| 出版者 | ELSEVIER SCIENCE BV |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/78447]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Zhai, MG |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China 2.Peking Univ, Dept Geol, Beijing 100871, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhai, MG,Shao, JA,Hao, J,et al. Geological signature and possible position of the North China block in the supercontinent Rodinia[J]. GONDWANA RESEARCH,2003,6(2):171-183. |
| APA | Zhai, MG,Shao, JA,Hao, J,&Peng, P.(2003).Geological signature and possible position of the North China block in the supercontinent Rodinia.GONDWANA RESEARCH,6(2),171-183. |
| MLA | Zhai, MG,et al."Geological signature and possible position of the North China block in the supercontinent Rodinia".GONDWANA RESEARCH 6.2(2003):171-183. |
入库方式： OAI收割
来源：地质与地球物理研究所
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