MINERAL CHEMISTRY OF MAFIC GRANULITE ADJOINING CHALK HILLS OF THE SOUTHERN GRANULITE TERRANE

摘要

Mineral chemistry of mafic granulites adjoining the Chalk Hills, Salem in the southern granulite terrane has been presented and discussed. Several mineral pairs have been used to estimate temperature of equilibration (at assumed 7 kbar to 10 kbar pressure). Similarly the pressure range has also been estimated through relevant equilibrium assemblages. These deduced values have been utilised to infer the peak of metamorphism at 900 deg C and 10.9 kbar on a P-T grid. The available data suggest the study area to represent a domain of dissected thickened crust.