| 龙门山构造演化与山前带油气关系 |
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| 引用本文：王金琪.1994.龙门山构造演化与山前带油气关系[J].地球学报,15(3,4):167-179. |
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| 摘要点击次数: 2064 |
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| 中文摘要:晚元古代板块缝合线、古生代坳拉槽，由于受外来板块碰撞发生强烈挤压滑脱，成为一系列逆掩断裂并推覆到克拉通之上，形成印支期的龙门山；长期西倾的大陆边缘转变为四川前陆盆地；多期造山运动持续发生，前陆盆地相应迁移叠合，控制了油气的生、移、聚、散；而岩层的超致密化及喜马拉雅运动的彻底改造，使龙门山前油气具有独特的规律。 |
| 中文关键词:推覆构造，前陆盆地，油气藏，龙门山 |
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| Relationship between Tectonic Evolution and the Foreland Hydrocarbon in the Longmen Mountains |
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| Abstract:This paper has discused the geological and tectonic evolution of oil and gas area,in orderto view in large scale oil and gas accumalation in the front of the Longmen Mountains,notassociated with local evaluation and forecast. In the Indosinian Movement,the Longmen Mountains were subjected to the collision bothin west and north plates. dominantly from west,forming the nappe system stacked on thecraton. The important boundary condition is the suture of Late Proterozoic and Palaeozoicaulacogen. The Anxian Movement makes the shelf margin to form the foreland basin. Due tothe plate collision of west(south),Longmen Mountains rose for many times,the sedimentarycenters were displaced and overlappod.So the hydrocarbon source in the Longmen Mountainswas rich and assumulation of oil and gas occurred early. Rork overtightening was resulted inoil and gas stagnation. The late traps and fractures,however,are developed to make oil andgas active. All of these discussed above indicate that the geological conditions are unique andcomplicate. The exploratary targets in this paper are summarized.The world large scale gas field maybe occurred,when associated with peak generation of Uppor Triassic,sandstone beforetightening and favorable trape. In the Himalayan Movement,there would be occurred manymiddle and small scale gas fields,forming a considerable gas area. A lot of unimaginableproblems may be solved by improvement of exploration techniques,especially the techniquesfor digital seismic data processing |
| keywords:verthrust foreland basin oil and gas area Longmen Mountains |
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