胶东西北部罗家花岗岩地球化学特征及成因分析

摘要

Luojia granite in northwest Jiaodong area of Shandong province is the main part of Guojialing granite body and closely related to Au mineralization.According to the Q-A-P diagram,the granite is of sodium granite of sub-alkaline rock series and is highly differentiated.In general Luojia granite is characterized by type Ⅰ syntactic granite.%胶西北地区罗家花岗岩为郭家岭花岗岩的主体部分,与区内金矿化关系密切.研究认为,此花岗岩属于亚碱性系列的钠质花岗岩,分异程度较高,总体具有同熔的Ⅰ型花岗岩特征.