摘要
山东诸城地区榴辉岩出露在构造混杂带西北缘，榴辉岩呈大小不等的透镜体分布于片麻岩之中。经矿物学、岩石学及地球化学研究得出，榴辉岩原岩为玄武质岩浆晚期分异产物，其形成环境为岛弧。榴辉岩形成的温压条件为：Ｔ＝７８８．３５℃、Ｐ＝２．５ＧＰａ。榴辉岩的形成与华北板块。
The petrogenesis of eclogites scattered in gneisses on the northwestern margin of the Southern Shandong-Northern Jiangsu tectonic melange zone has been studied in this paper by petrological, mineralogical and petrochemical methods. Through our study, we have reached the conclusion that the protolith of eclogite is tholeiite formed in an island arc environment. Geothermometry and geobarometry show that the P T conditions for the formation of eclogites are T 788.35℃ and P 2.5 GPa. The formation of the eclogites is related to the subduction collision orogeny between the North China and the Yangtze plate.
出处
《岩石矿物学杂志》
CAS
CSCD
北大核心
1997年第1期33-43,共11页
Acta Petrologica et Mineralogica
关键词
榴辉岩
成因岩石学
变质作用
petrogenesis, eclogite, Zhucheng area, Shandong Province
