| 云开变质地体的地质特征 |
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| 引用本文： | 康云骥.云开变质地体的地质特征[J].现代地质,2001,15(3):275-280. |
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| 作者姓名： | 康云骥 |
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| 作者单位： | 广西区域地质调查研究院 |
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| 基金项目： | 国家“九五”攀登专项(SSER项目);国家自然科学基金项目(49825102). |
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| 摘 要： | 位于两广交界处的云开大山地区是一个由前寒武纪变质表壳岩与寒武纪变形变质花岗岩组成的变质地体。该地体形成于晚前寒武纪 ,它在古生代向北运移并同时发生左旋旋转 ,从而奠定了该区的构造格局。在中二叠世末的东吴运动期间 ,该地体最终与钦州沉积地体拼合。由于应力弛张作用 ,使两地体间的构造分界线 (灵山构造带 )后期表现为左旋断层性质。
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| 关 键 词： | 变质地体 韧性剪切 桂东南 云开大山 |
| 文章编号： | 1000-8527(2001)03-0275-06 |
| 修稿时间： | 2001年3月28日 |
ON THE GEOLOGICAL FEATURES OF THE YUNKAI METAMORPHORIZED TERRAIN |
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| KANG Yun-ji.ON THE GEOLOGICAL FEATURES OF THE YUNKAI METAMORPHORIZED TERRAIN[J].Geoscience——Journal of Graduate School,China University of Geosciences,2001,15(3):275-280. |
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| Authors: | KANG Yun-ji |
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| Abstract: | Situated at the border area between Guangdong and Guangxi provinces, the Yunkai Mountain region is confirmed to be a metamorphorized terrain which is made up of the Pre-Cambrain metamorphorized surfacial rocks and the Cambrian metamorphorized granites. It is believed that this terrain was formed in the Late Pre-Cambrian. During the Paleozoic, it moved northward and rotated dextrally at the same time, and thus resulted in the present tectonic framework of the region. During the Dongwu movement at the end of Middle Permian, this terrain finally came into collision with the Qingzhou sedimentary terrain. For the sake of stress relaxation, the tectonic boundary between these two different terrains (i.e.the Lingshan structure zone) expressed as a dextral fault in late period. |
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| Keywords: | metamorphorized terrain ductile shearing southeastern Guangxi Yunkai Mountain |
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