David Bridgwater

TL;DR: The Isua supracrustal belt is a fragment of a more extensive Early Archaean sedimentary and volcanic succession intruded by and tectonically intercalated with tonalitic and granitic Amftsoq gneisses in the period 3800-3600 Ma as mentioned in this paper.

TL;DR: The Amiˆtsoq gneisses are depleted in Rb and U relative to those of Ameralik and Isua as discussed by the authors, indicating that this depletion, correlated with the granulite-facies metamorphism occurred ca. 3600 Ma ago.

TL;DR: The Lapland-Kola Orogen (LKO; former Kola craton) in the northern Fennoscandian Shield comprises a collage of partially reworked late Archaean terranes with intervening belts of Palaeoproterozoic juvenile crust as mentioned in this paper.

TL;DR: In the Isua supracrustal belt, Isukasia area, southern West Greenland, a c. 75 km2 augen of lower deformation is seen to comprise predominantly 3,750-3,700 Ma tonalitic grey gneisses that were intruded first by thin bodies of mafic to dioritic composition, known collectively as the Inaluk dykes, and then by c. 3,600 Ma white gneises and finally by sporadic 3,400 Ma pegmatitic gneisse sheets as discussed by the authors.

TL;DR: In the southern marginal zone of the Palaeoproterozoic Nagssugtoqidian orogen and its foreland (West Greenland), Archaean gneisses were intruded by the syn-kinematic Kangâmiut dyke swarm.