| 郯庐断裂带早白垩世岩浆活动与断裂带的活动关系 |
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| 引用本文： | 谢文雅,牛漫兰,曹洋.郯庐断裂带早白垩世岩浆活动与断裂带的活动关系[J].合肥工业大学学报(自然科学版),2009,32(3). |
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| 作者姓名： | 谢文雅 牛漫兰 曹洋 |
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| 作者单位： | 合肥工业大学,资源与环境工程学院,安徽,合肥,230009 |
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| 摘 要： | 文章通过收集晚中生代时期郯庐断裂带中南段出露的糜棱岩、火山岩和侵入岩样品的同位素年代学数据,结合区域构造应力场、断陷盆地和伸展活动时间等多方面的证据,显示了早白垩世初郯庐断裂带再次发生左行平移,之后迅速转为伸展运动,并伴随发生了大规模的岩浆岩喷发事件.与华北克拉通内部相比,断裂带内具有相对较长的演化历史和减薄程度,暗示了郯庐断裂带有着比克拉通内部更加强烈的伸展运动,为岩石圈的强烈减薄及大规模岩浆活动的发生提供了有利的条件.
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| 关 键 词： | 白垩世 郯庐断裂带 岩浆活动 演化 |
Research on early cretaceous magmatic activity in the middle-southern segment of the Tan-Lu fault zone and its evolution |
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| XIE Wen-ya,NIU Man-lan,CAO Yang.Research on early cretaceous magmatic activity in the middle-southern segment of the Tan-Lu fault zone and its evolution[J].Journal of Hefei University of Technology(Natural Science),2009,32(3). |
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| Authors: | XIE Wen-ya NIU Man-lan CAO Yang |
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| Institution: | School of Resources and Environmental Engineering;Hefei University of Technology;Hefei 230009;China |
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| Abstract: | The geochronological data of mylonites,volcanic rocks and intrusions from the middle-southern segment of the Tan-Lu fault zone and the study results of the tectonic stress field and faulted-depression basin show that the Tan-Lu fault experienced a second sinistral strike-slip during the early cretaceous,which was then followed rapidly by extensional activities and large-scale magmatic eruption.Compared with inner North China Craton,the Tan-Lu fault zone has a long history of evolution and lithosphere thinni... |
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| Keywords: | cretaceous Tan-Lu fault magmatic activity evolution |
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