Metamorphic record of accretionary processes during the Neoarchaean: The Nuuk region, southern West Greenland

摘要: Abstract The Nuuk region of southern West Greenland consists several distinct terranes, including, from NW to SE, the Faeringehavn, Tre Brodre, and Tasiusarsuaq terranes. Extensive high-pressure metamorphism a clockwise P–T evolution Faeringehavn terrane at ca. 2720–2710 Ma has been interpreted be result crustal thickening thrusting on top Brodre Pseudosection modelling constrains path for characterised by initial burial, followed heating depth peak conditions ∼700 °C 10 kbar subsequent isothermal decompression 700 °C 6 kbar. These data are consistent with results previous studies, pointing relatively cool apparent geothermal gradient