A study on distribution of Mesozoic strata in Northwestern South China Sea and Indo-China Peninsula using integrated geophysical methods
综合地球物理方法对南海西北部-印支半岛地区中生界分布的研究

In order to assess the oil and gas resource potential of Pre-Cenozoic especially Mesozoic in the Northwestern South China Sea, macro-distribution of Mesozoic strata is studied by using integrated geophysical methods. Based on rock physics properties, the relationship between geological interfaces and physical property interfaces is built, and the distribution of interfaces can be obtained based on different geophysics data. The shallow sedimentary basin structure can be obtained from reflection seismic data; and basement undulation and deep structure can be obtained from gravity and magnetic inversion. The regional-residual potential field is separated by forward computation, filter operation and wavelet analysis. Basement undulation is inversed from corresponding anomalies using the Parker-Oldenburg method. Finally, macro-distribution of Mesozoic strata is determined in combination with real geological data.