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自从19世纪末,Weinschenk~([1])首次对产于日本四国岛北部的高镁安山岩进行了描述,并将其命名为赞岐岩之后,高镁安山岩掀起了地学界新的学术高潮。高镁安山岩通常是指SiO_2含量在53%~60%,MgO含量通常>4%,和Mg~#比较高的闪长岩和安山岩~([2])。高镁安山岩之所以得到众多学者的关注在于其成因的特殊性,现今被发现的高镁安山岩均形成于俯冲的大地构造环境。当前,高镁安山岩主要分为4类:形成于前弧环境,由消减带之上亏
Since the late 19th century, Weinschenk ~ ([1]) described for the first time the high-Mg andesite produced in the northern part of Shikoku Island, Japan, and named it “Sanuki Rock”, the high-Mg andesite set off a new academic climax in geosciences. High-Mg andesite generally refers to diorite and andesite ~ ([2]) with SiO 2 content of 53% -60%, MgO content of> 4% and high Mg ~ # content. The reason why the high magnesium andesite got the attention of many scholars lies in the peculiarity of its origin. Nowadays, the high-magnesium andesite discovered in the subduction tectonic environment. At present, the high-Mg andesite is mainly divided into four categories: formed in the pre-arc environment, by the loss zone above the loss