<P> On September 25 , 2008 , researchers from McGill University , Carnegie Institution for Science and UQAM announced that a rock formation , the Nuvvuagittuq greenstone belt , exposed on the eastern shore of Hudson Bay in northern Quebec had a Sm - Nd model age for extraction from the mantle of 4.28 billion years . However , it is argued that the actual age of formation of this rock , as opposed to the extraction of its magma from the mantle , is likely closer to 3.8 billion years , according to Simon Wilde of the Institute for Geoscience Research in Australia . </P>
<P> On September 25 , 2008 , researchers from McGill University , Carnegie Institution for Science and UQAM announced that a rock formation , the Nuvvuagittuq greenstone belt , exposed on the eastern shore of Hudson Bay in northern Quebec had a Sm - Nd model age for extraction from the mantle of 4.28 billion years . However , it is argued that the actual age of formation of this rock , as opposed to the extraction of its magma from the mantle , is likely closer to 3.8 billion years , according to Simon Wilde of the Institute for Geoscience Research in Australia . </P>
where is the oldest known rock on earth located
where is the oldest known rock on earth located
Hudson Bay in northern Quebec
Hudson Bay in northern Quebec