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《Chinese Journal of Geophysics》 1996-03
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FINE CRUSTAL STRUCTURE IN YANQING─HUAILAI REGION BY DEEP SEISMIC REFLECTION PROFILING

ZHANG XIAN-KANG;WANG CHUN-YONG; LIU GUO-DONG;SONG JIAN-LI; LUO LI-LEI; WU TAO; WU JIAN-CHUN1)(Research Center of Exploration Geophysics, SSB, Zhengzhou 450003, China) 2)(Institute of Geophysics, SSB, Beijing 100081, China)3)(Institute of Geology, SSB,  
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.
【Fund】: 国家科委“八五”科技重点项目
【CateGory Index】: P313.2
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