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Antarctic geothermal heat flow (GHF) affects the thermal regime of ice sheets and simulations of ice and subglacial meltwater discharge to the ocean, but remains poorly constrained.
Continent-continent collisions develop mature orogenic systems over tens of millions of years, creating a thermally weakened mid-crustal infrastructure layer (15–50 km deep) that flows laterally from the thickened mountain ranges or plateaus.
Integrated metamorphic and geochronological data place new … constraints on the metamorphic evolution of a Neoproterozoic … orogen in east Antarctica. Granulite-facies rocks from a 150 km … stretch of the Kemp Land coast reflect peak conditions involving … T870^9908C at P74^10 kbar…
Mineral equilibria modelling and electron microprobe chemical dating of monazite in granulite facies … metapelitic assemblages from the MacRobertson Land coastline, Rayner Complex, east Antarctica, are … consistent with an !anticlockwise" Neoproterozoic P–T–t path. Metamorphism occurred at c.
In-situ zircon U–Pb and Hf isotopic analysis … via laser ablation microprobe-inductively coupled plasma … mass spectrometer (LAM-ICPMS) of samples from … Kemp and MacRobertson Lands…