| 四川雷波峨眉山玄武岩岩石学及地球化学特征 |
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| 关键词:Leibo area Emei Shan basalt petrology geochemistry |
| 基金项目:中国地质调查局基础地质调查项目(编号: DD20160019-19; DD20190080) |
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| 摘要: |
| The Petrological and Geochemical Characteristics of Emei Shan Basalt in Leibo County, Sichuan Province |
| Based on profile survey and microscopic and geochemical study, the authors investigated the Emei Shan basalt in Leibo County, Sichuan Province. Some conclusions have been reached: ①The rock types mainly include compact basalt, porphyritic basalt, and amygdaloidal basalt with columnar joints, formed probably by typical terrestrial eruption; ②The petrochemistry is classified as alkaline basalt with high titanium, resulting from stretching in plate; ③The basalt originated from enriched mantle source, which was produced by mantle plume and formed at large depth, and experienced similar activities of magmatic evolution and crystallization differentiation; ④The basalt has no eruptive breccia facies, and consists mainly of the spillway overflow facies. It is the product of extensional action in Panxi rift and may belong to its marginal facies. |
| CHEN Yu-chuan,XIAO Ke-yan,XIANG Jie,XIAO Ke-yan,CHEN Jian-ping.2020.The Petrological and Geochemical Characteristics of Emei Shan Basalt in Leibo County, Sichuan Province[J].Acta Geoscientica Sinica,41(3):325-336. |
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