Open AccessPhysicochemical simulation of the conditions for the mafic granulite formation (Bunger Hills, East Antarctica)
Author(s) -
I.A. Abdrakhmanov
Publication year - 2021
Publication title -
vestnik geonauk
Language(s) - English
Resource type - Journals
ISSN - 2712-7761
DOI - 10.19110/geov.2021.2.3
Subject(s) - granulite , metamorphism , geology , mafic , metamorphic rock , geochemistry , gneiss , enstatite , mineral , geomorphology , chemistry , structural basin , meteorite , astrobiology , chondrite , physics , organic chemistry , facies
The article presents the results of mineral thermobarometry and physico-chemical simulation of the formation of garnet-enstatite gneiss from the Mesoproterozoic metamorphic suite of the Bunger Hills, East Antarctica. As a result, the water activity, temperature and pressure of rock formation were estimated. It is shown that the peak temperature of metamorphism could reach 900 °С or more. Such temperature conditions indicate the prerequisites for the occurrence of UHT-metamorphism during the formation of the East Antarctic Shield.