摘要
本文报道了笔者对分布于山东荣成、文登、威海、青岛、胶南、诸城、日照和莒南等地的榴辉岩所作的岩石学矿物学和地球化学研究。确定了这一巨型榴辉岩带是由两条相互重合的榴辉岩带所构成;一条为高温高压成因的A—B类榴辉岩带;另一条为低温高压成因的C类榴辉岩带。它们形成于早元古代早期华南陆块向华北陆块的俯冲,并经受了早元古代角闪岩相变质作用的迭加。早元古代早期华北陆块发生向南运动的大陆推覆体构造,使两种不同成因类型的榴辉岩带在空间上重迭。最后推测这一榴辉岩带的分布代表着我国东部华北陆块与华南陆块的分界界限。
Study of petrology, mineralogy and its genesis of eclogites that distribute in Rongcheng, Wendeng, Weihai, Qingdao, Jiaonan, Zhucheng, Rizhao and Junan of Shandong province is made in this paper. This large eclogites zone consists of two eclogites zones, one is type A-B eclogites zone that genesis by high-temperature and high- pressure metamorphism, the other is type C eclogites zone that genesis by low-temperature and high-pressure metamorphism, its genesis is by the south China plate collision with the north China plate at early Suberathem, and undergo the amphibole-face metamorphism repeat at Suberathem. At the early Suberathem, the north China plate take place napping structure to the south China plate, and caused the two different genesis type eclogites to overlap in space. Finally we infer that this eclogites zone represents the boundary between the south China plate and the north China plate in East China.
出处
《海洋湖沼通报》
CSCD
北大核心
1991年第4期16-39,共24页
Transactions of Oceanology and Limnology
基金
青岛海洋大学学校基金
关键词
榴辉岩
岩石学
矿物学
地球化学
Shandong
eclogite
petrology
mineralogy
genesis
