Fluid migration in the middle crust is difficult to explain—the environment is considered too hot for a dynamic fracture-sustained permeability, as in the upper crust, and fluid pathways are generally too deformed to be controlled by equilibrium wetting angles that apply to hotter, deeper environments. Here, synchroton X-ray tomography and scanning electron microscopy observations are used to formulate a model for fluid migration in shear zones which may explain fluid transfer through the middle crust.
- F. Fusseis
- K. Regenauer-Lieb
- F. De Carlo
