The ~70 km-diameter Yarrabubba impact structure in Western Australia is regarded as among Earth’s oldest, but has hitherto lacked precise age constraints. 
[2]Here we present U–Pb ages for impact-driven shock-recrystallised accessory minerals. Shock-recrystallised monazite yields a precise impact age of 2229 ± 5 Ma, coeval with shock-reset zircon.
Original Source [3]
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Links:
[1] http://admin.indiaenvironmentportal.org.in/feature-article/precise-radiometric-age-establishes-yarrabubba-western-australia-earth%E2%80%99s-oldest
[2] http://www.indiaenvironmentportal.org.in/files/file/Yarrabubba.pdf
[3] https://www.nature.com/articles/s41467-019-13985-7.pdf
[4] http://admin.indiaenvironmentportal.org.in/category/author/timmons-m-erickson
[5] http://admin.indiaenvironmentportal.org.in/category/author/christopher-l-kirkland
[6] http://admin.indiaenvironmentportal.org.in/category/author/nicholas-e-timms-et-al
[7] http://admin.indiaenvironmentportal.org.in/category/journal/nature-communications
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/geology
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/minerals
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/climate-change
[11] http://admin.indiaenvironmentportal.org.in/category/thesaurus/australia
[12] http://admin.indiaenvironmentportal.org.in/category/thesaurus/research
