| 论碰撞作用时间 |
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| 引用本文： | 万天丰.论碰撞作用时间[J].地学前缘,2011,18(3):48-56. |
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| 作者姓名： | 万天丰 |
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| 作者单位： | 中国地质大学(北京)地球科学与资源学院,北京,100083 |
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| 摘 要： | 以中国及欧洲大陆一些碰撞带所测得的同位素年龄为基础,讨论板块从俯冲到碰撞的过程,认为依次发生了如下事件:俯冲板块的运移速度减慢,洋壳在地表消失,开始碰撞,形成强构造变形与动力变质作用,发生一系列的岩浆活动,最后才隆升成山.这些事件都具有不同的同位素年龄.碰撞的初始作用时间,应该在所测年龄最新的洋壳消失以后,在强构造变形...
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| 关 键 词： | 板块俯冲-碰撞 板块位移 变形变质 岩浆活动 同位素年龄 |
A discussion on the collision time |
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| Wan Tianfeng.A discussion on the collision time[J].Earth Science Frontiers,2011,18(3):48-56. |
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| Authors: | Wan Tianfeng |
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| Institution: | Wan TianfengSchool of Earth Sciences and Resources,China University of Geosciences(Beijing),Beijing 100083,China |
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| Abstract: | Based on the isotopic ages collected in some collision zones of China and Europe continents,the process from subduction to collision between plates is discussed;in this process the following events occurred in sequence: the decrease in the moving velocity of plates,the disappearance of the oceanic crust on the surface,the beginning of the collision,the formation of the strong deformation and dynamic metamorphism,the occurrence of a series of magmatism and,at last,the uplifting of mountains.Above events have... |
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| Keywords: | plate subduction-collision plate migration rock deformation and metamorphism magmatism isotopic age |
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