Earth's oldest asteroid strike linked to 'big thaw'
Curtin University, January 22, 2020
[www.sciencedaily.com]

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
[www.nature.com]

Yours,

Paul H.

"The past is never dead. It's not even past."
William Faulkner, Act 1, Scene III, Requiem for a Nun (1951)