The Salt Dome problem: A multilayered approach

摘要: The dynamical evolution of buoyancy-driven geological systems is mainly influenced by two physical parameters: density and equivalent viscosity. Salt structures are an appropriate representation these systems. Important variations parameters directly related to changes in mass, thus the internal themselves their time become significant parameters. In order decipher nature means experiments it therefore necessary extend model calculations on intrusion processes multilayer A two-dimensional finite element program has been developed simulate rise individual diapirs through multi-layered overburdens exhibiting Newtonian-viscous rheologies. This includes following features: arbitrarily shaped interfaces between different fluid boundaries, layers thickness subsidence within model-frame as well time- depth-dependent material properties. paper concerned with single intruding upbuilt multilayered overburdens, effect a subsiding salt base due pure downbuilding, differential loading gravitationally unstable distributions mass. Variable viscosity overburden depth control shape ascent rates diapiric bodies. history “salt structures” dominates development maximum horizontal pressure gradients ascend histories diapirs.