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根据海区地震反射界面、地震层序、断裂和褶皱等方面的不同特征,结合已有钻井资料和围区陆地地质,南沙地区新生代期间大致可划分出四次重要的构造运动——礼乐运动、西卫运动、南海运动和南沙运动。频繁的构造运动反映了南沙地区新生代构造的活动性,也造成了这一地区构造样式的多样性。这一系列运动的产生与南海周缘太平洋板块、菲律宾海板块和印度-澳大利亚板块在新生代期间与欧亚板块间的相对运动和相互作用有密切关系。
According to the different characteristics of seismic reflection interface, seismic sequence, faults and folds in the sea area, combined with the existing drilling data and the geology of the surrounding area, during the Cenozoic of the Nansha area, four important tectonic movements - etiquette and music movement , Western Wei Movement, South China Sea Movement and Nansha Movement. The frequent tectonic movements reflect the activity of the Cenozoic tectonics in the Nansha area and have also contributed to the diversity of tectonic styles in this area. The series of movements are closely related to the relative movement and interaction between the Eurasian plate and the Pacific plate in the periphery of the South China Sea, the Philippine Sea Plate and the Indo-Australian plate during the Cenozoic.