Mineral analysis and geochemistry of Muehlig-Hofmannfjella granitoids, Central Drooning Maud Land, East Antarctica

Ferrosilite-fayalite bearing charnockite and biotite-hornblende bearing granite are exposed in Mühling-Hofmannfjella, central Dronning Maud Land of East Antarctica. Both are interpreted as essentially parts of a single pluton in spite of their contrasting mineral assemblages. Based on petrologic and...

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Bibliographic Details
Main Authors: D'Souza, Mervin, Prasad, A V Keshava, Ravindra, Rasik
Format: Dataset
Language:English
Published: PANGAEA 2007
Subjects:
20th_Indian_Antarctic_Expedition
Dronning Maud Land
Antarctica
MAO_19A
MHO_04
MHO_15A
MHO_16
MHO_18A
MHO_22
MHO_24
MHO_25A
MHO_28
MHO_29
MHO_33
MHO_35
OUTCROP
Outcrop sample
Sampling on land
East Antarctica
Muehlig-Hofmannfjella
Mühlig-Hofmannfjella
Antarc*
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.611560
https://doi.org/10.1594/PANGAEA.611560
Description
Summary:Ferrosilite-fayalite bearing charnockite and biotite-hornblende bearing granite are exposed in Mühling-Hofmannfjella, central Dronning Maud Land of East Antarctica. Both are interpreted as essentially parts of a single pluton in spite of their contrasting mineral assemblages. Based on petrologic and geochemical studies, it is proposed that H2O-undersaturated parent magma with igneous crustal component that fractionated under different oxygen fugacity conditions resulted in the Mühlig-Hofmannfjella granitoids.

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