摘要
本文报道了南极拉丝曼丘陵“中山站”石榴石变粒岩的岩石学和矿物化学特征;确定了其矿物组合及世代演化关系,利用电子探针分析了其特征变质矿物的化学组成,最后推断东南极拉丝曼丘陵地区曾发生过麻粒岩相变质作用和混合岩化作用。
Study of petrology, mineralogy and metamorphism is made on garnet granulite at theZhongshan Station, Antarctic. The garnet granulite is composed of three generation mineralassemblages, the first one is biotite + plagioclaes + quartz + sillimanite; the second one isgarnet + spinel + plagioclaes + quartz; the third one is potash feldspar + quartz + epidote+ chlorite. The garnet is almandine, the spinel is hercynite, the plagioclase is andesine.The garnet granulite went through granulite-face metamorphism at temperature 700-800℃ and pressure 9-11kb. Metasomatism or migmatization took place after granulite-face metamorphism.
出处
《海洋科学》
CAS
CSCD
北大核心
1992年第3期49-53,共5页
Marine Sciences
关键词
石榴石
变粒岩
岩石学
矿物学
The Zhongshan Station
Antarctic
Garnet granulite
Petrology
Mineralogy
Metamorphism
