| 华北晚前寒武纪镁铁质岩墙群的流动构造及侵位机制 |
| |
| 引用本文： | 侯贵廷,李江海,H C HALLS,钱祥麟.华北晚前寒武纪镁铁质岩墙群的流动构造及侵位机制[J].地质学报,2003,77(2):210-216. |
| |
| 作者姓名： | 侯贵廷 李江海 H C HALLS 钱祥麟 |
| |
| 作者单位： | 1. 北京大学地质学系,100871
2. 多伦多大学地球科学系,加拿大多伦多 |
| |
| 基金项目： | 国家自然科学基金(编号40172066) |
| |
| 摘 要： | 华北克拉通中部广泛发育晚前寒武纪镁铁质岩墙群。这些岩墙群未变形和未变质,保存了清晰完好的流动构造,完整地反映了前寒武纪岩浆活动的特征和流动构造,这在世界上是罕见的。通过对晚前寒武纪镁铁质岩墙群的形态和流动构造研究,如:流动线理、矿物组构和磁组构等,提出岩墙群的侵位方向和侵位方式。结合本区岩墙群与燕辽—中条拗拉槽系的关系以及岩墙群的力学性质,探讨本区岩墙群的侵位机制。
|
| 关 键 词： | 镁铁质岩墙群 水平侵位 华北克拉通 燕辽—中条拗拉槽系 |
| 修稿时间： | 2002年4月23日 |
The Flow Structures and Mechanics of Late Precambrian Mafic Dyke Swarms in North China Craton |
| |
| HOU Guiting,LI Jianghai,H C HALLS,QIAN Xianglin.The Flow Structures and Mechanics of Late Precambrian Mafic Dyke Swarms in North China Craton[J].Acta Geologica Sinica,2003,77(2):210-216. |
| |
| Authors: | HOU Guiting LI Jianghai H C HALLS QIAN Xianglin |
| |
| Institution: | HOU Guiting,LI Jianghai,H C HALLS,QIAN Xianglin Department of Geology,Peking University,Beijing,Department of Geoscience,University of Toronto,Canada |
| |
| Abstract: | Late Precambrian mafic dyke swarms are extensively developed in the central North China Craton. These dyke swarms are undeformed and unmetamophosed with beautifull flow structure to show the characteristics of Precambrian magma activity, which is rare in the world. The direction and way of the dyke emplacement are proposed based on the study of the shape and flow structures of Late Precambrian mafic dyke swarms; for example, flow lineation, mineral fabric and magnetic fabric. The origin of dyke emplacement is discussed according to the relation between the dykes and the Yanliao-Zhongtiao aulacogens as well as the mechanics of the dykes. |
| |
| Keywords: | mafic dyke swarms horizontal emplacement Yanliao-Zhongtiao aulacogens North China Craton |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《地质学报》浏览原始摘要信息 |
| 点击此处可从《地质学报》下载免费的PDF全文 |
|
