| 延庆─怀来地区地壳细结构──利用深地震反射剖面 |
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| 引用本文： | 张先康,王椿镛.延庆─怀来地区地壳细结构──利用深地震反射剖面[J].地球物理学报,1996,39(3):356-364. |
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| 作者姓名： | 张先康 王椿镛 |
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| 作者单位： | 1. 国家地震局地球物理勘探中心,郑州450003;
2. 国家地震局地球物理研究所,北京100081;
3. 国家地震局地质研究所,北京100029;
4. 国家地震局震害防御司，北京100036 |
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| 基金项目： | 国家科委“八五”科技重点项目 |
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| 摘 要： | １９９２年底在延庆－怀来地区实施了深地震反射剖面测量，目的是通过对该区地壳细结构的研究来探讨延庆－怀来盆地形成演化的机制和过程，以及与该区地震活动图像的关系．结果表明，研究区上部地壳总体上呈“透明”性质，厚２５－２６ｋｍ；下部地壳具有强烈的反射性质，厚约１４－１５ｋｍ．壳幔过渡带是由双程走时约２ｓ和厚约５－６ｋｍ的水平反射叠层所组成，莫霍界面具有深度深（约３９－４０ｋｍ）和平坦的特点。
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| 关 键 词： | 延庆─怀来盆地 深地震反射 地壳细结构 |
| 收稿时间： | 1995-07-17 |
FINE CRUSTAL STRUCTURE IN YANQING─HUAILAI REGION BY DEEP SEISMIC REFLECTION PROFILING |
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| ZHANG XIAN-KANG,WANG CHUN-YONG,LIU GUO-DONG,SONG JIAN-LI,LUO LI-LEI,WU TAO,WU JIAN-CHUN.FINE CRUSTAL STRUCTURE IN YANQING─HUAILAI REGION BY DEEP SEISMIC REFLECTION PROFILING[J].Chinese Journal of Geophysics,1996,39(3):356-364. |
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| Authors: | ZHANG XIAN-KANG WANG CHUN-YONG LIU GUO-DONG SONG JIAN-LI LUO LI-LEI WU TAO WU JIAN-CHUN |
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| Affiliation: | 1. Research Center of Exploration Geophysics, SSB, Zhengxhou 450003, China;
2. Institute of Geophysics, SSB, Beijing 100081, China;
3. Institute of Geology, SS B, Beijing 100029, China;
4. Department of Seismic Haxard Prevention, SSB, Beijing 100036, China |
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| Abstract: | At the end of 1992, deep seismic reflection measurements were carried out in Yanqing-Huailai region by Research Center of Exploration Geophysics and Institute of Geophysics of State Seismalogical Bureau.The object of this experiment is to investigate the evolution mechanism and process of Yanqing-Huailai basin and its relation to the seismicity in this region.The results indicate that the upper crust is characterized by seismic transparency with the thickness of about 25-26km and the lower crust is characterized by high reflectivity with the thickness of about 14-15km in this region.The crust-mantle transition zone consists of sets of subhorizontal reflections refferred to seismic lamellae with TWT of 2 seconds and the thickness of about 5- 6km. The Moho is flat and its depth is about 39-40km in this region. |
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| Keywords: | Yanqing-Huailai basin Deep seismic reflection profiling Fine crustal structure |
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