Redefinition of Yushishan Nb-Ta Deposit Bearing Strata in Western Central Qilian and Its Significance
Yushishan Leptynite type Nb-Ta Deposit is a large Nb-Ta ore deposit discovered in western Central Qilian in recent years.However,the attribution of Nb-Ta ore bearing strata is unclear.On the basis of combing previous research results,through fine field research and regional comparison,this suit of strata has been redefined.It was disassembled from the Changcheng period Aoyo-ugou Formation to establish a new lithostratigraphic unit,named the Neoproterozoic Yushishan Formation.The original sequence of Yu-sishan Formation was analyzed,and the formation process was also summarized.The research results not only provide new materials for stratigraphic contrast and research in the western section of the Central Qilian massif,but also provide a basis for prospecting and met-allogenic research of Yusishan Leptynite type Nb-Ta deposit in the western section of the central Qilian massif.
western central QilianYushishan leptynite type Nb-Ta depositNb-Ta ore bearing strataYushishan Formation
万方数据
维普
