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Showing results for tags 'Meteorites'.
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Oxytropidoceras posted a topic in Fossil NewsOldest meteorite collection on Earth found in one of the driest places, Geological Society of America Sciencedaily, May 23, 2019 https://www.sciencedaily.com/releases/2019/05/190523130200.htm Earth's Oldest Meteorite Collection Just Found in the Driest Place on the Planet By Brandon Specktor, May 24, 2019 https://www.livescience.com/65558-atacama-desert-has-meteors-for-days.html The paper is: A. Drouard, J. Gattacceca, A. Hutzler, P. Rochette, R. Braucher, D. Bourlès, ASTER Team, M. Gounelle, A. Morbidelli, V. Debaille, M. Van Ginneken, M. Valenzuela, Y. Quesnel, R. Martinez. The meteorite flux of the past 2 m.y. recorded in the Atacama Desert. Geology, May 22, 2019. Open Access https://pubs.geoscienceworld.org/gsa/geology/article/570818/the-meteorite-flux-of-the-past-2-m-y-recorded-in https://arxiv.org/abs/1904.12644 Yours, Paul H.
Oxytropidoceras posted a topic in Fossil NewsEvidence suggests life on Earth started after meteorites splashed into warm little ponds, PhysOrg, October 2, 2017 https://phys.org/news/2017-10-evidence-life-earth-meteorites-splashed.html How did Life Start? Meteorites crashing into Darwin's Little Warm Ponds May Have been Trigger, by Megham Bartels, Newsweek. http://www.newsweek.com/2017/10/27/how-did-life-start-meteorites-crashing-darwins-warm-little-ponds-was-possible-675655.html The paper is: Pearce, B.K., Pudritz, R.E., Semenov, D.A. and Henning, T.K., 2017. Origin of the RNA world: The fate of nucleobases in warm little ponds. Proceedings of the National Academy of Sciences, vol. 114 no. 43, pp. 11327-11332 http://www.pnas.org/content/114/43/11327 https://arxiv.org/pdf/1710.00434.pdf Yours, Paul H.
Oxytropidoceras posted a topic in Fossil NewsMyth busted: No link between gigantic asteroid break-up, rise in biodiversity, University of Copenhagen, February 3, 2017 https://www.sciencedaily.com/releases/2017/02/170203110156.htm https://phys.org/news/2017-01-meteorites-enrich-ocean-life.html the paper is; Lindskog, A., M. M. Costa, C.M.Ø. Rasmussen, J. N. Connelly, and M. E. Eriksson, 2017, Refined Ordovician timescale reveals no link between asteroid breakup and biodiversification. Nature Communications, 2017; 8: 14066 DOI: 10.1038/ncomms14066 http://www.readcube.com/articles/10.1038/ncomms14066 http://www.nature.com/articles/ncomms14066 Yours, Paul H.
Could all of the large meteorite impacts, especially the one(s) that drove the dinosaurs to extinction, increase the earths gravity? And if so is it likely this is a big factor in the next evolutionary step for dinosaurs, feathered flight?