摘要
胶南地区斜长花岗岩与中元古代变辉长岩相伴产出，由６０％的斜长石和４０％的石英组成。化学成分以高硅、低至中等的铝、低Ｋ２Ｏ为特征，与大洋斜长花岗岩相似。其单颗粒锆石ＰｂＰｂ同位素年龄是（１３７０．６±１４．３）Ｍａ。
Plagiogranite was discovered in the Jiaonan area, Shandong province. It occurs in association with Middle Proterozoic metagabbro. The rock consists of 60% plagioclase and 40% quartz and has high Si, low to moderate Al and low K_2O, being similar in chemical composition to oceanic plagiogranite. Its Pb Pb age of single grain zircon is (1 370.6±14.3) Ma.
出处
《中国区域地质》
CSCD
1998年第3期273-277,共5页
Regional Geology of China
