关键词: 坳隆构造, 地壳运动, 波状运动, 油气勘探

Abstract: Depression-uplift structure is a basic structural unit developed on crustal surface. It is secondary structure and is superposed upon larger plate tectonics. Depression-uplift structural movement is a kind of undulatory movement and can be manifested on three levels. Firstly, depressions and uplifts alternate with each other and develop mutually. Secondly, they alternate and transform to each other. Thirdly, they migrate to a certain direction. Asthenosphere movement leads to the movement of depression-uplift structure. Crustal surface shows undulatory movement due to the asthenosphere. Deformation and movement law of depression-uplift structure accordingly develops. According to the movement law, it is possible to determine the structural position where basins were located then. According to the law that depressions and uplifts transform to each other and migrate to a certain direction, relative position of depression-uplift of old structures can be determined based on the depression-uplift distribution of new superstructures. This shows a way to conduct exploration for oil and gas in old structures. It is feasible to analyze faults, folds, magma activity, and motion source on the basis of the law of geological effect associated with the movement of depression-uplift structure.

Key words: depression-uplift structure, crust movement, undulatory movement, exploration for oil and gas