青藏高原周边地区与新生代盆地卤水活动有关铅锌矿床

青藏高原周边已发现大量的铅锌矿床,规模巨大,具有一些相似的成矿地质地球化学特征,均属于后生的、低温热液型矿床,具强烈层控性质,受控于特定的含矿地层（岩石）组合,下部为相对透水的砂岩、砂砾岩,上部为碳酸盐岩,发生广泛的蚀变作用,包括退色、白云石化等。这类矿床大体可与MVT矿床类比。矿床的形成与青藏高原隆升过程中盆地卤水的活动有关,圈闭在不整合面下的含贱金属元素与油气的卤水沿透水层运移,在适当位置沉淀成矿。由此决定了这些地区的主要找矿标志与找矿方向。随着地质认识的深入及勘查的进展,将会有更多更大规模的（MVT）铅锌矿床被发现。

Pb-Zn deposits related to brine activities of Cenozoic basin occurred at the periphery of Tibetan Plateau

A large quantity of Pb-Zn deposits occurred in large scales with similar metallogenic geological and geochemical characteristics have been found at the periphery of Tibetan Plateau.As epigenetic,epithermal deposits,with strong strata-bound features,they are all controlled by the specifical ore-bearing strata（rocks） combination,the lower part of which is sandstone and sandy conglomerate with relative higher permeability,while the upper part of which is carbonate rocks that were altered widely,including discoloration and dolomitization. Being analogy of MVT deposits generally, this type of deposits is formed due to brine activities of the basin during the uplift of Tibetan Plateau. The brine bearing base metal elements and gas with oil that was trapped under unconformity surface transported along permeable layer and deposited to form deposits at proper location. Therefore, the major prospecting criteria and direction were determined. With the geological cognition and relating survey going further, more and larger scales of Pb-Zn （MVT） deposits will be discovered at this area.