Low-pressure granulite facies metamorphism in the Larsemann Hills area, East Antarctica; petrology and tectonic implications for the evolution of the Prydz Bay area

1989 ◽  
Vol 7 (4) ◽  
pp. 465-483 ◽  
Author(s):  
K. STÜWE ◽  
R. POWELL
Keyword(s):  
Granulite Facies ◽  
Low Pressure ◽  
East Antarctica ◽  
Prydz Bay ◽  
Granulite Facies Metamorphism ◽  
Larsemann Hills ◽  
Bay Area ◽  
Tectonic Implications ◽  
Facies Metamorphism ◽  
Hills Area

Monazite petrochronology of polymetamorphic granulite‐facies rocks of the Larsemann Hills, Prydz Bay, East Antarctica

2021 ◽  
Author(s):  
Steven K. Spreitzer ◽  
Jesse B. Walters ◽  
Alicia Cruz‐Uribe ◽  
Michael L. Williams ◽  
Martin G. Yates ◽  
...  
Keyword(s):  
Granulite Facies ◽  
East Antarctica ◽  
Prydz Bay ◽  
Larsemann Hills

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.

scholarly journals Timing of granulite-facies metamorphism in the eastern Himalayan syntaxis and its tectonic implications

2010 ◽  
Vol 485 (1-4) ◽  
pp. 231-244 ◽  
Author(s):  
Wang-Chun Xu ◽  
Hong-Fei Zhang ◽  
Randall Parrish ◽  
Nigel Harris ◽  
Liang Guo ◽  
...  
Keyword(s):  
Granulite Facies ◽  
Granulite Facies Metamorphism ◽  
Tectonic Implications ◽  
Facies Metamorphism ◽  
Eastern Himalayan Syntaxis
Sign in / Sign up

Export Citation Format

Share Document