The study of the geologic thermometry and barometry, estimates of metamorphic temperatures and pressures, has been in, progress. Voluminous geothermobarometric data have made available to demonstrate the context of the temperature pressure variation with the successive structural events within an metamorphic belt, as shown by its P-T-t path. The development of the geothermobarometry relies on: 1)the electron microbe analysis and X-ray crystallographic measurements of the metamorphic mineral and mineral pair...