where is the oldest known rock on earth located
Oldest dated rocks 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.[8][9][10][11] 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.[3]
Coal mining in the United Kingdom Stone and Bronze Age flint axes have been discovered embedded in coal, showing that it was mined in Britain before the Roman invasion. Early miners first extracted coal already exposed on the surface and then followed the seams underground.[7]