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- Title
四川雷波峨眉山玄武岩岩石学及地球化学特征.
- Authors
刘建清; 何 利; 胡宇瀚; 何佳伟; 何 平
- Abstract
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.
- Publication
Acta Geoscientica Sinica, 2020, Vol 41, Issue 3, p325
- ISSN
1006-3021
- Publication type
Article
- DOI
10.3975/cagsb.2019.100901