辽宁省清源县放牛沟含榴白云母花岗岩地质特征及构造环境探讨

Geologic features and tectonic setting of the garnetiferous muscovite granite in the Fangniugou, Qingyuan County,Liaoning Province

辽宁省清源县放牛沟发现一含榴白云母花岗岩岩体,其锆石(U Pb)年龄为261±20M a,时代中二叠世,其岩石化学以富S iO2、富碱为特征,具Ⅰ型花岗岩特征,属晚华力两期同碰撞造山花岗岩晚期分异产物。

The garnetiferous muscovite granite in the Fangniugou, Qingyuan County, Liaoning Province, was discovered, the age of zircon is 261±20Ma; time belongs to middle Permian; from the lithochemistry, characterized by the rich SiO2, rich alkaline and Ⅰ type granite. It should be the late differential product of the synorogenic granite in the late Variscan.