辽西壳幔熔体相互作用过程和背景的探讨

Exploring processes and settings of crust-and mantle-melts interactions in west Liaoning province

以辽西阜新地区115Ma快速喷发的玻基方辉安山岩和其下伏的玄武岩为研究对象,通过岩相学研究,发现不同阶段形成的,以不同形式赋存的高镁和高硅玻璃,通过它们追溯地壳-幔熔体混合的过程,在此基础上再进一步探讨壳-幔熔体混合的环境及其底侵作用的构造背景。

Quick-eruptive sanukites of llSMa and subjacent basalts in Fuxin area, west Liaoning province were studied in this work. Facieological researches discovered in the rocks high-Mg and high-Si glasses forming in different stages and occurring in different modes, analysis of which revealed the intermingling processes of crust- and mantle-melts. With these results the environment for the melts intermingling and its tectonic settings of underplating were further investigated.