摘要
<正>大火成岩省的成因是国际地学界研究的热点。广泛分布于我国川滇黔三省的二叠纪峨眉山玄武岩是中国境内目前唯一被国际学术界认可的大火成岩省,一般认为其形成与二叠纪末期(约258-259Ma)的地幔柱作用有关。自中生代以来,峨眉山大火成岩省至少经历了特提斯洋闭合和印度-亚洲大陆碰撞等重大地质事件,其地质时-空过程和现今所处的构造环境非常复杂。目前关于峨眉山大火成岩省的主
引文
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