<正>Objective More and more evidence suggests that the Kwangsian orogen is probably an intraplate orogen,which is one of the few examples of intraplate orogenes
<正>1 Introduction Massive tungsten-tin,rare and rare earth metals ore deposits were formed with the widespread granite magmatic activity in early Yanshanian pe
<正>1 Introduction Hetai district,which is a mountainous area,situated on Guangning and Zhaoqing city,west Guangdong Province.Hetai district is generally locate