| India-Eurasian collision vs. ocean-continent collision＊ |
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| 引用本文： | 曾融生,吴庆举,丁志峰,朱露培.India-Eurasian collision vs. ocean-continent collision＊[J].地震学报(英文版),2007,20(1):1-10. |
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| 作者姓名： | 曾融生 吴庆举 丁志峰 朱露培 |
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| 作者单位： | Institute of Geophysics China Earthquake Administration Beijing 100081 China，Institute of Geophysics China Earthquake Administration Beijing 100081 China，Institute of Geophysics China Earthquake Administration Beijing 100081 China，Department of Earth and Atmospheric Science Saint Louis University Missouri 63103 USA |
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| 基金项目： | National Natural Science Foundation of China (49374207 and 49974021). |
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| 摘 要： | Introduction Major tectonic activities occur in collisions zones between plates or intra-plate continental blocks. Therefore, it is significant to investigate collision processes. We know that orogenic and seismic belts in plate margins are closely relate…
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| 关 键 词： | 印度-欧亚板块碰撞 板块边缘 海陆碰撞 地壳俯冲带 雅鲁藏布缝合带 喜马拉雅山 |
| 文章编号： | 1000-9116（2007）01-0001 |
| 收稿时间： | 2006-02-22 |
| 修稿时间： | 2006-07-03 |
India-Eurasian collision vs. ocean-continent collision |
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| Zeng Rong-sheng , Wu Qing-ju , Ding Zhi-feng and Zhu Lu-pei.India-Eurasian collision vs. ocean-continent collision[J].Acta Seismologica Sinica(English Edition),2007,20(1):1-10. |
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| Authors: | Zeng Rong-sheng Wu Qing-ju Ding Zhi-feng and Zhu Lu-pei |
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| Institution: | (1) Institute of Geophysics, China Earthquake Administration, Beijing, 100081, China;(2) Department of Earth and Atmospheric Science, Saint Louis University, Missouri 63103, USA |
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| Abstract: | Ample observational evidence shows that there is a northward crustal subduction zone underneath the Yarlung Zangbo suture
between India and Eurasia. It penetrates Moho to a depth of about 100 km. There are probably multiple such crustal subductions
under the Himalayas. They are different from lithosphere subduction during oceanic collisions. The detected slabs in the upper
mantle north of the Yarlung Zangbo suture can be interpreted as remains of the Indian Plate’s mantle lithosphere. In contrary
to ocean-continent subduction, the mantle lithosphere is delaminated from the crust as the Indian Plate subducts underneath
Eurasia. Existing structural images of the crust and upper mantle of the Tibetan Plateau reveal that there were both northward
and southward subductions over different geological periods, causing some seismic velocity anomalies around those subduction
zones.
Contribution No.07FFE3001. Institute of Geophysics, China Earthquake Administration. |
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| Keywords: | India-Eurasian collision ocean-continental collision delamination |
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