| 青藏高原东北缘似三联点构造的初步研究 |
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| 引用本文： | 李松林,赖晓玲.青藏高原东北缘似三联点构造的初步研究[J].大地测量与地球动力学,2006,26(2):10-14. |
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| 作者姓名： | 李松林 赖晓玲 |
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| 作者单位： | 中国地震局地球物理勘探中心,郑州,450002 |
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| 基金项目： | 中国科学院资助项目;地震科学联合基金;中国地震局地球物理勘探中心项目 |
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| 摘 要： | 从深部构造的角度对青藏高原东北缘似三联点构造进行了探讨。人工地震资料反演结果表明,该区的地壳结构与其它地区明显不同Moho面为一复杂的过渡带,而不是尖锐的速度间断面;在该区内存在一组弧形构造,各弧形断层在形态、规模和破碎程度方面的差异,反映了青藏高原块体向东北方向强烈的挤压作用及其传递过程。
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| 关 键 词： | 似三联点构造 青藏高原 地壳结构 地震测深 弧形构造 |
| 文章编号： | 1671-5942(2006)02-0010-05 |
| 修稿时间： | 2005年12月18 |
PRELIMINARY STUDY ON QUASI TRI-JUNCTION IN NORTHEASTERN MARGIN OF QINGHAI-TIBET PLATEAU |
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| Li Songlin,Lai Xiaoling.PRELIMINARY STUDY ON QUASI TRI-JUNCTION IN NORTHEASTERN MARGIN OF QINGHAI-TIBET PLATEAU[J].Journal of Geodesy and Geodynamics,2006,26(2):10-14. |
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| Authors: | Li Songlin Lai Xiaoling |
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| Abstract: | The quasi tri-junction in the northeastern margin of the Qinghai-Tibet plateau is discussed from the viewpoint of deep structures. Results inversed from deep seismic sounding data show that the crustal structure of this quasi tri-junction is quite different from the other regions. In this region, the Moho is a complicated transitional zone rather than a sharp discontinuity. Furthermore, there is a set of arcuate tectonic zones. The differences of the arcuate fault zones in shape, scale and fractured extent indicate the strong compression from the Qinghai-Tibet plateau toward the NE direction and its transmission process. |
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| Keywords: | quasi tri-junction Qinghai-Tibet plateau crustal structure seismic sounding arcuate tectonic zone |
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