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为了探明台湾海峡及邻近海区的构造格局,并揭示台湾海峡的中、新生代沉积分布状况,为有关部门提供油气远景评价的基础科学资料,在福建省政府和中国科学院的关心和支持下,本所和福建海洋研究所共同合作,以“实验2”号和“延平”号调查船,于1986年7月10日至8月6日,在23—27°N之间,包括粤东韩江口、福建九龙江口和闽江口外、台湾海峡的西部海区,进行了海底测深、重力,磁力、单道地震和多道地震反 相似文献
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THE BOUGUER ANOMALIES AND DEPTHS OF MOHOROVICIC DISCONTINUITY IN THE SOUTH CHINA SEA REGION 总被引:3,自引:0,他引:3
The South China Sea is situated at the continsntal margin of South China. In this region, there are both continental and oceanic crusts. The values of Bouguer gravity anomalies on the continental shelf are low positive or low negative. Because the depth of the Mohorovicic discontinuity in this region is about 26-32 km below sea level, the crust belongs to the continental type. The values of Bouguer gravity anomalies in the deep-sea region are more than 250 mgal and the depth of the Moho-surface is about 10-15 km below sea level, so the crust is of oceanic type. The values of gravity anomalies and depths of the Moho-surface, obtained over the continental (and island) slope, range between those regions mentioned above, so the crust belongs to the transitional type. The continental crust is inferred to be directly in contact with the oceanic crust as a result of a lithospheric fault. 相似文献
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