摘要
以对冀东地区都山花岗岩基进行详细的野外地质调查,分析测试都山花岗岩的岩石化学成分及微量元素成分,测定都山花岗岩不同成因锆石的 U-Pb 年龄及对锆石进行群型分析为据。认为都山花岗岩基的源岩为晚太古代岩石,岩基的主体形成于元古代,在中生代经受了强烈的改造,并形成了部分新生岩浆。
Based on the field investigation for Dushan granite in eastern Hebei,North China,the chemical composition and the trace elements of the granite are analysed,the isotopic ages of differ- ent kinds of zircons in the granite are analysed and studied their crystal habits.According to these,it is proposed that the Dushan granite was derived from the lower degree anatexis of the late Archean rocks in Proterozoic era,and the granite suffered a intensive remobilization in Mesozoic era.
出处
《矿物岩石》
CAS
CSCD
1996年第4期1-7,共7页
Mineralogy and Petrology
关键词
花岗岩
岩石成因
岩基
同位素测年
铀
铅
eastern Hebei
Dushan granite
petrogenesis
U-Pb isotopic age
