西藏斯弄多铅锌矿矿床地质特征及成因研究

A study on the geological characteristics and genesis of the lead zinc deposit in silondo,Tibet

斯弄多铅锌矿位于西藏冈底斯造山带,大地构造位置为冈底斯~念青唐古拉板块上隆格尔~工布江达弧背断隆带南缘。矿床赋存于石炭系昂杰组地层,受区内构造岩浆活动控制。矿床斯弄多铅锌矿床的矿化明显受构造破碎带控制,矿区有构造裂隙热液充填交代型和矽卡岩型两种矿床成因类型,而以构造裂隙热液充填交代型为主。

The silondo lead zinc deposit is located in the Gangdise orogenic belt of Tibet,and its tectonic position is in the southern margin of longger gongbujiangda arc back fault uplift belt on Gangdise Nianqing Tanggula plate.The deposit occurs in the stratum of Angjie formation of Carboniferous system and is controlled by the tectonomagmatic activity in the area.The mineralization of the strondou lead-zinc deposit is obviously controlled by the structural fracture zone.There are two genetic types of the deposit:structural fracture hydrothermal filling metasomatic type and skarn type,and the main one is structural fracture hydrothermal filling metasomatic type.