The transport of heat and matter by fluids during metamorphism

摘要: Non-dimensional solutions to the equations for combined advective and diffusive one-dimensional transport of heat solute in a layer are derived fixed temperature/concentration on boundaries initial conditions linear gradient across or step function at lower boundary. The allow distinction regimes which either predominate as fluid flux, time length scale. much coefficients than results significant range scales flux rates characterised by advection matter diffusion heat. velocity component is its fluid:rock partition coefficient. most rapidly transported tracers largely into phase, such He, will travel orders magnitude faster compatible solutes oxygen. Geochemical profiles boundary regions where both shown be particularly informative properties rocks related flow porosity, permeability, rates. importance can directly estimated from asymmetry geochemical individual layers.