藏北地区砂金矿特征及找矿方向初探

Metallogenic features and prospecting direction of gold placer,northern Tibet

藏北地区砂金矿矿质来源于中酸性岩浆岩接触带、沉积地层不整合接触带及硅化岩带 ,具物源近、成矿时代新的特点。班公湖—怒江地缝合线及其两侧的羌塘隆起带和冈底斯—念青唐古拉陆块 。

The gold placer minerals in the northern Tibet originated from intermediate acid magmatic rock contact areas,sedimentary stratigraphic unconformity contact areas and silicified rock areas.They are near the origins and have young mineralization period.The best prospective area of the gold placer is situated at the suture zone of Bangong Lake to Nujiang River, two sides Qiangtang mole track and Gangdisi to Nianqingtanggula landmass.