Features and dynamic mechanisms of Cenozoic tectonic migration and its impact on the hydrocarbon accumulation in the northern South China Sea

作     者：YIN Zhengxin CAI Zhourong WAN Zhifeng LYU Baofeng 

作者机构：School of Marine SciencesSun Yat-sen University Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering Key Laboratory of Offshore Oil Exploration and Development of Guangdong Higher Education Institutes 

出 版 物：《Acta Oceanologica Sinica》 (海洋学报（英文版）)

年 卷 期：2015年第34卷第1期

页      面：100-109页

核心收录：

学科分类：081803[工学-地质工程] 08[工学] 0818[工学-地质资源与地质工程] 

基　　金：The National Natural Science Foundation of China under contract No.4106035 the Project of Geological and Geophysical Maps in China's Seas and Its Adjacent Regions under contract No.GZH200900504 

主　　题：tectonic migration Cenozoic hydrocarbon accumulation northern South China Sea 

摘      要：The northern continental margin of the South China Sea （SCS） is located within the tectonic system of Southeast Asia, an area with a great deal of tectonic migration due to the regional tectonic movements. The available geological and geophysical data of the area are comprehensively analyzed in order to demonstrate the typical migration patterns of the Cenozoic tectonics in the northern SCS caused by the episodes of the Cenozoic tectonic movement. Furthermore, the lateral variation characteristics of the strata and the differ- ent evolution patterns of the main basins＇ features are assessed. It primarily focus on： （1） the Cenozoic epi- sodic rifting from north to south in the continental margin of the northern SCS; （2） the rifting and depression time of the main basins progressively become younger as one goes from north to south, signifying that the migration of both the tectonics and the sediments within the northern SCS travelled from north to south during the Cenozoic; and （3） the lateral tectonic migration on the direction of EW is not regular in total, but in some local areas the trending of the tectonic migration is from west to east. The analysis of the tectonic migration features of the northern SCS, in combination with the regional tectonic evolution background, indicates that the observed remote lagging effect, resulted from the India-Eurasia plate collision, is the main dynamic mechanism involved in the tectonic migration within the northern SCS. The tectonic migration has significant influence on both the organization of petroleum deposits and on the hydrocarbon accumulation within the basins in the northern SCS; comprehensive understanding of this dynamic system is of great reference value in predicting the hydrocarbon accumulation and has the potential to have an enormous impact in discovering new deep reservoirs for the future oil-gas exploration.