Abstract Eclogite-facies mineral assemblages are commonly preserved in mafic protoliths within continental terranes. It is widely accepted that the entirety of these terrains must also have been subducted to eclogite-facies conditions. However, evidence felsic material transformed at conditions lacking. Low-strain metagranites ultrahigh-pressure metamorphic Tso Morari Complex Ladakh, Himalaya, ...

A Monte Carlo algorithm to simulate the isothermal recrystallization process of snow is presented. The snow metamorphism is approximated by two mass redistribution processes: surface diffusion and sublimation-deposition. The algorithm is justified and its parametrization is determined. The simulation results are compared to experimental data, in particular, the temporal evolution of the specifi...

Metamorphism and partial melting of the lower crust is commonly assumed to cause depletion in heat producing elements (HPEs; K, U, Th). In deep crust, volumetrically subordinate metasedimentary layers, which are source crustal granites (sensu lato), host majority Th ± primarily within REE + U Y phosphate mineral monazite. We examine spatial temporal distribution monazite grains rocks from secti...

This paper argues that the presence of external control of fluid composition during metamorphism of iron-formation should be indicated by the occurrence of high-grade rocks which either lack the bufering assemblages such as olivine-magnetite-quartz or by the presence of such assemblages in which the silicates show a very restricted range in composition. A review of high-grade iron-formations fr...

Abstract Metamorphism of dry, lower crust within orogens is often localized in shear zones composed mechanically weaker rocks 1–4 . Several field-based studies suggest zone development preceded by brittle faults which provide the fluid pathways required for metamorphism and weakening 4–12 However, a unifying model couples long-term geological deformation to migration metamorphic reactions does ...