Physicochemical simulation of the conditions for the mafic granulite formation (Bunger Hills, East Antarctica) | Zendy

Ilnur A. Abdrakhmanov | Zendy

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Physicochemical simulation of the conditions for the mafic granulite formation (Bunger Hills, East Antarctica)

Author(s) -

Ilnur A. Abdrakhmanov

Publication year - 2021

Publication title -

vestnik of geosciences

Language(s) - English

Resource type - Journals

ISSN - 2712-7761

DOI - 10.19110/geov.2021.2.3

Subject(s) - granulite , geology , metamorphism , mafic , metamorphic rock , geochemistry , gneiss , enstatite , mineral , petrology , geomorphology , structural basin , meteorite , chondrite , astrobiology , physics , facies , materials science , metallurgy

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.

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