| 甘肃北山勒巴泉变质核杂岩 |
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| 引用本文： | 刘明强, 龚全胜. 甘肃北山勒巴泉变质核杂岩[J]. 西北地质, 2003, 36(2): 30-34. |
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| 作者姓名： | 刘明强 龚全胜 |
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| 作者单位： | 甘肃省地勘局第三地质矿产勘查院, 甘肃 兰州 730050 |
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| 基金项目： | 中国地质调查局"甘肃马鬃山-北山造山带及非史密斯地层区1∶25万区域地质填图及方法研究"项目成果(编号:19961300010101) |
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| 摘 要： | 在多期伸展体制下形成的勒巴泉变质核杂岩构造,具有3层结构的特征,即结晶基底、中间韧性盖层、上部脆性盖层,其间分别被基底剥离断层和盖层剥离断层分割。本文重点论述了变质核杂岩的组成、空间展布、结构构造和典型的构造样式,并分析了变质核杂岩构造的形成时代和大地构造背景。
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| 关 键 词： | 甘肃北山 变质核杂岩 剥离断层 伸展构造 |
| 文章编号： | 1009-6248(2003)02-0030-05 |
| 收稿时间： | 2001-11-29 |
| 修稿时间： | 2001-11-29 |
On metamorphic core complex of Lebaquan in Beishan area, Gansu |
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| LIU Ming-qiang, GONG Quan-sheng. On metamorphic core complex of Lebaquan in Beishan area, Gansu[J]. Northwestern Geology, 2003, 36(2): 30-34. |
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| Authors: | LIU Ming-qiang GONG Quan-sheng |
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| Affiliation: | The Third Institute of Geology and Mineral Exploration, Gansu Bureau of Geology and Mineral Exploration and Development, Lanzhou 730050, China |
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| Abstract: | The metamorphic core complex of Lebaquan is formed at multiple stage extensional structure system, and is characterized by a three-layer texture: crystalline basement, middle shear cover-layer and upper brittle cover-layer.And the three layers are divided by basement denudational fault and cover-layer denudational fault.The paper mainly deals with material formation, texture and typical tectonic style, and analyses the formation age and tectoncs background. |
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| Keywords: | Beishan Gansu metamorphic core complex denudational fault extensonal structure |
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