Study on Metallogenic Regularity of Lead Zinc Polymetallic Deposits in Jinda Area,Tibet
The Jinda integrated exploration area is located in the eastern part of the Gangdise metallogenic belt,with abundant lead-zinc mineral resources.The ore-forming laws of lead-zinc deposits in Jinda area were analyzed from the aspects of ore genesis types,spatiotemporal distribution,and ore controlling factors.Research has shown that the lead zinc deposit in the Jinda integrated exploration area can be divided into four major mineralization zones:the Jiali thrust structure mineralization zone,the Tanggu Baga anticline axis mineralization zone,the Songbei thrust structure mineralization zone,and the Songnan dual thrust structure mineralization zone.The main genetic types of lead zinc deposits in the area are magmatic hydrothermal type and skarn type.The mineralization period can be divided into three periods:Early Cretaceous,Paleogene,and Neogene.The Paleogene and Neogene are the peak periods of lead zinc mineralization.The lead-zinc mineralization in the Jinda area is controlled by various factors such as stratigraphy,regional structure,and intermediate acidic intrusive rocks.
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