Large craton in Western Australia
Basic geological regions of Australia, by age. The large brown region in the lower left of the continent constitutes the Yilgarn Craton.
The Yilgarn Craton is a large craton that constitutes a major part of the Western Australian land mass. It is bounded by a mixture of sedimentary basins and Proterozoic fold and thrust belts . Zircon grains in the Jack Hills , Narryer terrane have been dated at ~4.27 Ga , with one detrital zircon dated as old as 4.4 Ga.[ 1]
The Murchison Province of the craton contains the over 2 billion year old Yarrabubba impact structure , previously regarded as the oldest dated meteorite impact crater ,[ 2] until the discovery of evidence such as shatter cones confirming the existence of the 3.47 billion year old North Pole Crater near Marble Bar in the Pilbara .[ 3] [ 4]
^ Earlier known as Yilgarn Block Geological Survey of Western Australia (1975), The Geology of Western Australia , Western Australia Geological Survey, ISBN 978-0-7244-6084-7 , section Yilgarn Block by I. R. Williams page 33–81.
^ Erickson, Timmons M.; Kirkland, Christopher L.; Timms, Nicholas E.; Cavosie, Aaron J.; Davison, Thomas M. (21 January 2020). "Precise radiometric age establishes Yarrabubba, Western Australia, as Earth's oldest recognised meteorite impact structure" . Nature Communications . 11 (1): 300. Bibcode :2020NatCo..11..300E . doi :10.1038/s41467-019-13985-7 . PMC 6974607 . PMID 31964860 .
^ Kirkland, C.L.; Johnson, T.E.; Kaempf, J.; Ribeiro, B.V.; Zametzer, A.; Hugh Smithies, R.; McDonald, B. (6 March 2025). "A Paleoarchaean impact crater in the Pilbara Craton, Western Australia" . Nature Communications . 16 (1) 2224 (2025). Bibcode :2025NatCo..16.2224K . doi :10.1038/s41467-025-57558-3 . PMC 11885519 . PMID 40050265 .
^ de Kruijff, P. (6 March 2025). Earth's oldest-known crater discovered in outback WA is 3.47 billion years old, study finds ABC News . Retrieved 6 March 2025.