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Oxytropidoceras posted a topic in Fossil NewsAustralians 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.
Cavosie, A.J., N.E. Timms, T.M. Erickson, and C. Koeberl, 2017, New clues from Earth’s most elusive impact crater: Evidence of reidite in Australasian tektites from Thailand. Geology Published: December 20, 2017 DOI: https://doi.org/10.1130/G39711.1 https://pubs.geoscienceworld.org/gsa/geology/article-abstract/525531/new-clues-from-earth-s-most-elusive-impact-crater? " Here we report new evidence of a rare high-pressure phase in Australasian tektites that further constrains the location of the source crater. The former presence of reidite, a high-pressure polymorph of zircon, was detected in granular zircon grains within Muong Nong–type tektites from Thailand." "The data presented here place further constraints on the distribution of high-pressure phases in Australasian tektites, including coesite and now reidite, to an area centered over Southeast Asia, which appears to be the most likely location of the source crater." An impact capable of producing such a large strewn field certainly must have devastated prehistoric fauna and flora of Southeast Asia. I wonder if anyone has looked into this aspect of this asteroid impact. Yours, Paul H.