Metasomatic and shear instabilities in the plate boundary

Abstract

The metamorphic rocks formed in the plate boundary have common banding structures which composed of albite and quartz and chlorite layers. Their banding interface shows wavy having unique dominant wavelength. The available model for this phenomenon is based on the coupling of metasomatic instability proposed by the author and shear instability along on the banding surface. The characteristic wavelength is controlled by boundary migration velocity and diffusion rate of ionic components in interstitial solution.