峨眉地幔柱对中上扬子区二叠纪成藏条件影响的探讨

摘要

What is the relationship between the Emei taphrogenesis and Emei mantle plume? How did it influence the Permian gas accumulation in the middle-upper Yangtze Area? What is the significance of the study of taphrogenesis and mantle plume for the oil and gas exploration in Tarim Basin and for developing new oil and gas resources? These are complex and challenging problems.Based on several-year researches on Emei taphrogenesis,this paper uses previous study results of the Emei mantle plume to probe into the relationship between aulacogen formation in the northwestern margin of Yangtze Plate and Emei mantle plume and the impacts that thermal actions generated by Emei mantle plume on the source rock transformation and high-quality reservoirs.By the comparison of tectonic evolution of Tarim and Sichuan basins,it is suggested that the research and prospecting of Tarim Basin should strengthen the study of how the taphrogenesis and mantle plume influenced the hydrocarbon accumulation.Meantime,exploration of abiogenic oil and gas resource should be promoted by the study of these two-basin's mantle plume in order to discover new oil and gas resources.%峨眉地幔柱与峨眉地裂运动有何关系？它对中上扬子区二叠纪天然气藏有何影响？研究地幔柱和地裂运动对塔里木盆地油气勘探和开拓新的油气资源有何意义？这些均是复杂而有挑战性的问题。在多年研究峨眉地裂运动基础上,利用前人对峨眉地幔柱的研究成果,探讨扬子板块西北缘拗拉槽群形成与峨眉地幔柱关系,以及峨眉地幔柱产生的热力作用对烃源岩转化和优质储层的影响。对比塔里木盆地和四川盆地构造演化史,建议塔里木盆地油气勘探加强地幔柱和地裂运动对油气成藏条件影响的研究,同时开展地幔柱对2个盆地无机成因油气资源的探索,争取发现新的油气资源。