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Showing results for tags 'shock metamorphism'.
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Meteorite strikes may create unexpected form of silica Carnegie Institution for Science, August 26, 2020 The paper is: Sally June Tracy, Stefan J. Turneaure, Thomas S. Duffy. Structural response of α-quartz under plate-impact shock compression. Science Advances, 2020; 6 (35): eabb3913 Yours Paul H.
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- hypervelocity impact
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Yarrabubba impact structure, Australia, dated to 2224 - 2234 Ma (end of Snowball Earth)
Oxytropidoceras posted a topic in Geology
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.- 1 reply
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Size of Woodleigh impact structure, Australia, Revised
Oxytropidoceras posted a topic in Fossil News
Australians find extremely rare mineral in meteorite impact crater. Cecilia Jamasmie, Mining Com, October 16, 2018 http://www.mining.com/australians-find-extremely-rare-mineral-meteorite-impact-crater/ Ultra-rare mineral points to huge impact crater in Australia Michael Irving, New Atlas, October 17, 2018 https://newatlas.com/reidite-rarest-mineral-meteor-woodleigh-crater/56813/ the paper is: Cox, M.A., Cavosie, A.J., Bland, P.A., Miljković, K. and Wingate, M.T., 2018. Microstructural dynamics of central uplifts: Reidite offset by zircon twins at the Woodleigh impact structure, Australia. Geology, 46(11), pp.983-986. https://www.researchgate.net/publication/327938191_Microstructural_dynamics_of_central_uplifts_Reidite_offset_by_zircon_twins_at_the_Woodleigh_impact_structure_Australia https://www.researchgate.net/profile/Aaron_Cavosie https://pubs.geoscienceworld.org/gsa/geology/article-abstract/548639 Yours, Paul H.-
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- hypervelocity impact
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