中国中新生代地洼构造与油气矿藏

中新生代以来的地洼构造在中国陆壳上表现得特别活跃。这些地洼型的沉积盆地都蕴藏着大量的油气资源。作者认为,中国大陆夹持在太平洋和印度板块之间,这几个地质块体相互作用,使大陆抬升解体,形成滨太平洋外侧的近海大陆裂谷盆地;内侧的稳定沉降坳陷盆地;西北发育内陆山前坳陷盆地和山间盆地;青藏地区中生代为古特提斯海相沉积盆地和新生代发育陆相山间盆地。由于地质发展史不同,作者又进一步划分了东北、华北—中下扬子、华南、鄂尔多斯、四川、准噶尔、塔里木—柴达木和青藏等九个含油气盆地区。

THE DIWA TECTONICS AND PETROLEUM OF MESOZOIC-CENOZOIC ERA IN CHINA

Diwa tectonics has been very active in the continent of China since Mesozoic-Cenozoic times. Numerous different type's intraplate basins have been developed on the Chinese landmass as a result of interactions between the Pacific, Asian and Indian plates. In eastrern China, maritime continental-rift basins were formed. In central China, cratonic subsidence depressions exist. In north-western China, fore-deep and intermontane basins were developed. In Tibet-Qinghai, the ancient Tethys Marine basin existed in Mesozoic times, and the intermontane basins were developed in Cenozoic times, All these basins are of importance as the sites of petroleum accumulations. According to the different geologic history of development, the authors divided the Chinese landmass into nine petroliferOus basin provinces as follows: NE China, N China-middle-lower Yangtze, SE China, Ordos, Sichuan, Junggar, Tarim-Qaidam and Tibet-Qinghai regions.