Microstructures in deforming–reactive systems
Bruce E. Hobbs, Alison Ord, 2011. "Microstructures in deforming–reactive systems", Deformation Mechanisms, Rheology and Tectonics: Microstructures, Mechanics and Anisotropy, David J. Prior, Ernest H. Rutter, Daniel J. Tatham
Download citation file:
The inter-relationships between mineral reactions and deformation are explored with a view to understanding the development of certain mineral foliations and lineations. The following arguments are presented: (i) the processes involved during mineral reactions in deforming metamorphic rocks are described by coupled reaction–diffusion–deformation equations; (ii) these reactions can become unstable producing compositional patterning in both space (metamorphic differentiation) and time (compositional zoning); (iii) the patterns (foliations and mineral lineations) that result from coupled reaction–diffusion–deformation equations are described by surfaces that approximate minimal surfaces (surfaces of zero mean curvature) and an example of such geometry is given; and (iv) the foliations and mineral lineations that form by such processes are controlled by the evolution of the kinematics of the deformation history and not by the finite strain tensor.