峨眉山地幔柱鉴定及其对四川盆地储层的影响  

Identification of Emeishan Mantle Column and Its Influence

作　　者：秦雪露 赵婷玉 陈思源 QIN Xuelu;ZHAO Tingyu;CHEN Siyuan(Chengdu University of Technology,Yibin 644000,China)

机构地区：[1]成都理工大学,四川宜宾644000

出　　处：《河南科技》2023年第10期118-123,共6页Henan Science and Technology

摘　　要：【目的】峨眉山大火成岩省(ELIP)是我国最早被国际地学界承认的大火成岩省。本研究旨在分析峨眉山地幔柱的鉴定方法及其影响,为更多学者研究地幔柱提供参考。【方法】对峨眉山地幔柱喷发的原因、过程及其影响进行分析和探讨,分析并总结了前人的研究成果。【结果】ELIP地区存在大规模火山作用前的地壳抬升、放射状岩墙群、显著的火山作用以及典型的地幔柱产出岩浆的化学组成,为峨眉山地幔柱的鉴定提供了依据。峨眉山地幔柱的喷发对四川盆地油气储层形成和生物大灭绝具有显著影响。【结论】峨眉山地幔柱已有四种鉴定方法,不同的鉴定方法仍需更多的证据支撑。峨眉山地幔柱上涌、多旋回喷发以及地幔柱活动对四川盆地油气储层空间发育具有一定控制作用。[Purposes]The Emei Mountain Great Igneous Province(ELIP)is the earliest large igneous province in China recognized by international geologists.The purpose of this paper is to analyze the iden-tification method of Emei Mountain mantle plume and its influence to provide reference suggestions for more scholars to study mantle plume.[Methods]The cause,process and influence of Emei Mountain mantle plume eruption were studied and explored.And the previous research results were summarized and analyzed.[Findings]There were crustal uplift before large-scale volcanism,radial dike swarms,re-markable volcanism and typical chemical composition of magma produced by mantle plume in ELIP area,which provided a basis for the identification of Emei Mountain mantle plume.The eruption of Emei Mountain mantle plume had a significant impact on the formation of oil and gas reservoirs and biological extinction in Sichuan Basin.[Conclusions]Four identification methods have been found in Emei Moun-tain mantle plume,but different identification methods still need more evidence.The upwelling of Emei Mountain mantle plume,multi-cycle eruption and mantle plume activity have played a certain role in controlling the spatial development of oil and gas reservoirs in Sichuan Basin.

关 键 词：峨眉山大火成岩省 地幔柱鉴定 油气储层 成矿作用 

分 类 号：P542[天文地球—构造地质学] P588.145[天文地球—地质学]