SIGNIFICANCE OF MESO-CENOZOIC TECTONIC MOVEMENTS IN MARIN PETROLEUM EXPLORATIONS IN THE SOUTH OF CHINA
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摘要: 中新生代构造运动对现今南方古生代盆地的油气聚集有重大影响。从构造运动观点出发,探讨了中新生代构造运动对古生代盆地的改造,构造运动决定了盆地性质及油气的保持。中新生代构造运动影响了海相古生代盆地油气的再分配,对川西、川东北、湘鄂西等地区的构造形变进行了典型分析,认为川西龙门山山前带主要勘探目标为推覆体下盘古生界"准原地油气系统";大巴山前及其东延地带的推覆构造地区古生界是潜在的油气勘探领域;大巴山山前构造带的冲断带前沿深层断片背斜构造是有利勘探区;雪峰—江南推覆带西北缘盆地构造与油气分布复杂化地区可以作为进一步油气勘查的目的区。Abstract: The Meso-Cenozoic tectonic movements have great influence on present petroleum accumulations in Paleozoic basins in the south of China.The above mentioned movements have caused deformation in Paleozoic basins and controlled basin characteristics and petroleum preserve.Based on the analyses of tectonic deformations in the west and northeast of Sichuan as well as the west of Hu'nan and Hubei,the Paleozoic "parautochthonous petroleum system" in the lower plate of nappe is the main exploration target in the piedmont of Longmen Mountain in the west of Sichuan;the Paleozoic in nappe zones in the piedmont and the east of Daba Mountain is a potential area;the anticlines in the front of thrust zone in the piedmont of Daba Mountain are favorable for exploration;and the zone with complicated basin tectonics and petroleum distribution along the northwest of Xuefeng-Jiangnan nappe belt is worth further exploration.
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Key words:
- Meso-Cenozoic /
- tectonic movement /
- Paleozoic basin /
- marine petroleum exploration /
- the south of China
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