The mechanisms of the infill textures and its implications for the five-floor zonation at the Dajishan vein-type tungsten deposit, China

摘要: Abstract Infill textures in thick veins are one of the most important characteristics vein-type tungsten deposits, China. One prerequisites for forming these is low wallrock permeability, but its mechanisms have not been well understood. In this contribution, we investigated leading to permeability at Dajishan deposit by conducting finite element computer experiments. The numerical experiments suggest that hydrostatic compression exerted high-pressure fluids on decreases significantly a short geological time. deeper part more likely create and form infill than shallower part. also prohibits fluid flow from fracture zone country rock limits water–rock interactions. Therefore, facilitates both focusing high ore-formation efficiency zones. These conclusions help us better understand five-floor zonation Dajishan.