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利用最新的测井资料对非洲乍得的Lake Chad盆地地震资料进行了精细层位标定和解释,以此为基础仔细分析了盆地的构造特征及其演化。分析认为:Lake Chad盆地是中-新生代被动裂谷盆地,为前寒武结晶基底;盆地沉积盖层可划分为裂陷、坳陷两大构造层;断裂平面组合共有4种类型,剖面组合存在8种类型,不同组合类型在盆地内的分布位置不同;从研究区大的区域地质背景出发,并结合盆地的实际特点,将Lake Chad盆地构造演化划分为三个阶段,不同时期的盆地性质也不相同。
Using the latest logging data, the seismic data of the Lake Chad Basin in Chad, Africa, were finely calibrated and interpreted. Based on this, the structural features and evolution of the basin were carefully analyzed. The analysis shows that the Lake Chad Basin is a Meso-Cenozoic passive rift basin, which is a pre-Cambrian crystalline basement. The sedimentary cap rocks of the basin can be divided into two major structural layers, ie, rift and depression. There are altogether 4 types of fracture plane assemblages Based on the large regional geological background of the study area and the actual characteristics of the basin, the tectonic evolution of the Lake Chad Basin is divided into three stages. The basin types in different periods Not the same.