Granulite-Facies Metamorphism at Molodezhnaya Station, East Antarctica

1981 ◽  
Vol 22 (3) ◽  
pp. 297-336 ◽  
Author(s):  
E. S. GREW
Keyword(s):  
Granulite Facies ◽  
East Antarctica ◽  
Granulite Facies Metamorphism ◽  
Facies Metamorphism

New constraints on metamorphism in the Highjump Archipelago, East Antarctica

2016 ◽  
Vol 28 (6) ◽  
pp. 487-503 ◽  
Author(s):  
Naomi M. Tucker ◽  
Martin Hand
Keyword(s):  
Granulite Facies ◽  
East Antarctica ◽  
Partial Replacement ◽  
Granulite Facies Metamorphism ◽  
Metasedimentary Rocks ◽  
Facies Metamorphism ◽  
Antarctic Expedition ◽  
Higher Temperature ◽  
Temperature And Pressure

AbstractThe age and conditions of metamorphism in the Highjump Archipelago, East Antarctica, are investigated using samples collected during the 1986 Australian Antarctic expedition to the Bunger Hills–Denman Glacier region. In situ U-Pb dating of monazite from three metasedimentary rocks yields ages between c. 1240–1150 Ma and a weighted mean 207Pb/206Pb age of 1183±8 Ma, consistent with previous constraints on the timing of metamorphism in this region and Stage 2 of the Albany–Fraser Orogeny in south-western Australia. This age is interpreted to date the development of garnet ± sillimanite ± rutile-bearing assemblages that formed at c. 850–950°C and 6–9 kbar. Peak granulite facies metamorphism was followed by decompression, evidenced largely by the partial replacement of garnet by cordierite. These new pressure–temperature determinations suggest that the Highjump Archipelago attained slightly higher temperature and pressure conditions than previously proposed and that the rocks probably experienced a clockwise pressure–temperature evolution.

High-pressure granulite-facies metamorphism in central Dronning Maud Land (East Antarctica): Implications for Gondwana assembly

Lithos ◽  
2018 ◽  
Vol 300-301 ◽  
pp. 361-377 ◽  
Author(s):  
Rosaria Palmeri ◽  
Gaston Godard ◽  
Gianfranco Di Vincenzo ◽  
Sonia Sandroni ◽  
Franco M. Talarico
Keyword(s):  
High Pressure ◽  
Granulite Facies ◽  
East Antarctica ◽  
Granulite Facies Metamorphism ◽  
High Pressure Granulite ◽  
Facies Metamorphism ◽  
Dronning Maud Land
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