Northeast Yunnan Pb-zn Stratabound Diversity And Lithology, Facies Ore-controlling Relationship,

Northeast Yunnan is a kind of lead—zinc deposits as the main content of carbonate formation of stratabound Pb—Zn ore bed. Lead—zinc deposits in this region, deposits, mineralization of many, from the Upper Sinian Dengying to Lower Permian Maokou, were distributed in the carbonate formation, but the size of a huge amount of difference. Ore bodies are diverse, both the output layer of bedding, bedded, lenticular ore bodies, but also cut through the layers of the vein—like, tube—shaped, irregular—shaped ore bodies, etc.. Regardless of the ore body or vein ore bodies, most are brittle rock, large porosity dolomite, ore output in a certain rock—rock with paragraph, once beyond the favorable lithology—the scope of paragraph facies, ore is rapidly thinning, pinch.In this thesis, Northeast Yunnan stratabound lead—zinc deposits for the study, statistics of the deposit distribution in various layers, Accumulation; on different strata of typical geological features with a brief description; through the formation of regional constant element, trace elements, REE, Pb isotopic studies of ore—forming materials and formation relations; and research position with seam lithology, lithofacies, palaeogeography, sedimentary deposits of typical micro—phase environment, summed up the conducive to ore formation lithology, facies conditions.