Oxytropidoceras Posted January 29, 2020 Share Posted January 29, 2020 Earth's oldest asteroid strike linked to 'big thaw' Curtin University, January 22, 2020 https://www.sciencedaily.com/releases/2020/01/200122100546.htm the open access paper is: Timmons M. Erickson, Christopher L. Kirkland, Nicholas E. Timms, Aaron J. Cavosie, Thomas M. Davison. Precise radiometric age establishes Yarrabubba, Western Australia, as Earth’s oldest recognised meteorite impact structure. Nature Communications, 2020; 11 (1) DOI: 10.1038/s41467-019-13985-7 https://www.nature.com/articles/s41467-019-13985-7 Yours, Paul H. Link to comment Share on other sites More sharing options...
Wrangellian Posted January 30, 2020 Share Posted January 30, 2020 Thanks for posting... Another thing to add to my Precambrian timescale. Link to comment Share on other sites More sharing options...
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