合浦盆地——中国南方扭性盆地模式

Hepu Basin——a Model of Wrench Basins in Southern China

位于广西南部的合浦盆地是中、新生代发育的小型沉积盆地,从该区的区域构造特征及大量地震资料揭示的盆地结构构造特征分析认为,合浦盆地的形成和发展始终受到区域性力偶的控制,表现出明显的张扭作用特征,后期（新第三纪）受到压扭作用的强烈改造,合浦盆地这一发育特征在相当程度上反映了中国南方众多沉积盆地的共同特点。

Among all small-sized continental basins in Southern China, the Hepu basin is a major one in which a break through in petroleum exploration is being expected. The research of structural characteristics and evolution as well as their control over conditions of petroleum accumulation in this basin must also be very important for exploration of oil and gas in other basins of Southern China.The Hepu basin, located in southern area of Guangxi Province, is a Mesotoic - Cenozoic small sized sedimentary basin. Through analysis of the regional tectonics in Guangxi, as well as the structural styles of Hepu basin, the authors consider that the Hepu basin was deeply controlled by wrenching all through its evolution. A typical structural feature of wrenching basin was just the result of this wrench movement. In Neogene, the Hepu basin was reformed greatly by transpressional movement. This unique evolution of Hepu basin must be shared by other basins in Southern China.