| 由震源机制和地震波各向异性探讨青藏高原岩石圈变形 |
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| 引用本文： | 吕庆田,许志琴.由震源机制和地震波各向异性探讨青藏高原岩石圈变形[J].地质论评,1997,43(4):337-346. |
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| 作者姓名： | 吕庆田 许志琴 |
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| 作者单位： | 中国地质科学院矿床地质研究所 北京
(吕庆田，姜枚，马开义)，中国地质科学院地质研究所 北京(许志琴) |
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| 摘 要： | 本文据青藏高原天然地震震源参数和地震波各向异性资料，讨论了高原岩圈不同圈层的变形特性。
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| 关 键 词： | 青藏高原 震源机制 地震 各异异性 岩石圈变形 |
THE DEFORMATION CHARACTERES OF QINGHAI-XIZANG LITHOSPHERE : IMPLICATION FROM EARTHQUAKE MECHANISM AND SEISMIC ANISOTROPY |
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| Lii Qingtian,Jiang Mei,Ma Kaiyi Xu Zhiqin.THE DEFORMATION CHARACTERES OF QINGHAI-XIZANG LITHOSPHERE : IMPLICATION FROM EARTHQUAKE MECHANISM AND SEISMIC ANISOTROPY[J].Geological Review,1997,43(4):337-346. |
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| Authors: | Lii Qingtian Jiang Mei Ma Kaiyi Xu Zhiqin |
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| Abstract: | Based on the earthquake source mechanism and seismic anisotropy, the deformation charac-teres of different tectonic layers of the lithosphere of the Qinghai-Xizang (Tibet) Plateau are discussed in this paper. In the upper crust, east-west crustal extension and strike-slip faulting are the dominant styles of deformation within the plateau, while on the margins of the plateau, thrust faulting and crustal shortening are dominant. The deformation of the middle and low crust show northeast ductile flow and clockwise rotation. Brittle deformation might occur in the uppermost mantle of southern Xizang. Finally, the authors discuss the upper mantle plastic flow and its effect on the deformation of different lithospheric layers of the plateau, and believe that the east-west crustal extension and strike-slip faulting are closely related to the northeast ductile flow of the upper mantle. |
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| Keywords: | Qinghai-Xizang (Tibet) Plateau source mechanism seismic anisotropy litho-sphere deformation |
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