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全球岩石层板块运动是地幔物质热对流的动态表现,板块运动既推动了大陆和大洋岩石层相互作用,又约束着地幔自身热对流的过程,而地幔对流关系决定了盆地的构造—热体制,由此,可区分为大陆边缘和大陆内两大类不同演化的沉积盆地序列。中国大陆中新生代陆壳形变反映了构造运动的根源来于大陆物质在热覆盖下自身的蠕动。地幔蠕动受陆缘板块会聚运动和相互制约变化下引起大陆多期形成大地构造格局的变化。直接影响了大陆地壳沉降方式,形成世代结构更迭的盆地变格体制。一定世代的盆地构造—热体制约束着盆地沉积构造所反映的压力、容积和温度(P—V—T)特征,一定的P—V—T关系及其变化约束着油气生成、运移和聚集的过程。由此,正确识别这一约束关系,可有助于合理地建立油气勘探动态模式。
The global lithospheric movement is a dynamic manifestation of the thermal convection of mantle material. The plate movement not only promotes the interaction between the continental and oceanic lithosphere, but also restrain the thermal convection of the mantle. The convective mantle convection determines the tectonic-thermal regime of the basin, Thus, it can be divided into two major types of sedimentary basin sequences that have different evolutions along the continental margin and in the continent. The Meso-Cenozoic continental crust deformation in China reflects that the source of tectonic movement comes from the peristalsis of continental material under its own thermal coverage. The mantle creep is caused by the convergence movement and the mutual restriction and change of the continental margin plate, resulting in the multi-period formation of the tectonic changes in the continent. It directly affects the continental crustal settlement and forms the basin transformation system with the structural change from generation to generation. A certain generation of basin tectono-thermal systems constrain the characteristics of pressure, volume and temperature (P-V-T) reflected by sedimentary structures in the basin. The certain P-V-T relationship and its variation constrain hydrocarbon generation, migration and accumulation the process of. Therefore, correctly identifying this constraint can help to establish a reasonable dynamic model of oil and gas exploration.