基于深度域地震成像的中沙海槽盆地东北部结构构造研究

doi:10.11978/2018066

Abstract

Abstract:

Based on analysis of the seismic images from prestack depth migration, combining previous results inverted from geophysical data, e.g., gravity and magnetic inversions and so on, we investigate the structure of the northeastern Zhongsha Trough Basin in the South China Sea. The results indicate that the Cenozoic strata are developed with a thickness of 1500~2500 m, and the stratum velocity is 1500~3500 m·s^-1. There is no Mesozoic sedimentary layer. The base of the basin could be seamount, Precambrian bedrock, or magma uplift. The abundance of Cenozoic terrigenous marine source rocks, the thick layer of the Cenozoic strata, and well-developed basin depressions and faults all suggest that the northeastern Zhongsha Trough Basin has a certain potential for oil and gas exploration.

Key words: depth-domain seismic imaging, Zhongsha Trough Basin, basin structure

CLC Number:

P738.4

Bin ZHAO, Hongfang GAO, Heng ZHANG, Liqing LI. Structure study of the northeastern Zhongsha Trough Basin in the South China Sea based on prestack depth migration seismic imaging[J].Journal of Tropical Oceanography, 2019, 38(2): 95-102.

Figures/Tables 7

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Structure study of the northeastern Zhongsha Trough Basin in the South China Sea based on prestack depth migration seismic imaging

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