An impact melt origin for Earth’s oldest known evolved rocks

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An impact melt origin for Earth’s oldest known evolved rocks

Earth’s oldest evolved (felsic) rocks, the 4.02-billion-year-old Idiwhaa gneisses of the Acasta Gneiss Complex, northwest Canada, have compositions that are distinct from the felsic rocks that typify Earth’s ancient continental nuclei, implying that they formed through a different process. Using pha...

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Bibliographic Details
Main Authors:	Johnson, Tim, Gardiner, Nicholas, Miljkovic, Katarina, Spencer, Christopher, Kirkland, Chris, Bland, Phil, Smithies, H.
Format:	Journal Article
Published:	Nature Publishing Group, Macmillan Publishers Ltd 2018
Online Access:	http://purl.org/au-research/grants/arc/DP170102529 http://hdl.handle.net/20.500.11937/71426

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