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Showing results for tags 'extraterrestrial impact'.
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A steeply-inclined trajectory for the Chicxulub impact
Oxytropidoceras posted a topic in Fossil NewsDinosaur-dooming asteroid struck Earth at 'deadliest possible' angle Imperial College London, May 26, 2020 https://www.sciencedaily.com/releases/2020/05/200526111320.htm Collins, G.S., Patel, N., Davison, T.M. et al. A steeply- inclined trajectory for the Chicxulub impact. Nat Commun 11, 1480 (2020). https://www.nature.com/articles/s41467-020-15269-x Another paper: Rae, A.S., Collins, G.S., Poelchau, M., Riller, U., Davison, T.M., Grieve, R.A., Osinski, G.R., Morgan, J.V. and Expedition, I.I., 2019. Stress‐Strain Evolut
New Investigation of a Greenland ice core platinum anomaly near the Bølling-Allerød/Younger Dryas boundary
Oxytropidoceras posted a topic in Fossil NewsGreen, C. E., 2019. Investigating the origin of a Greenland ice core geochemical anomaly near the Bølling-Allerød/Younger Dryas boundary (Doctoral dissertation, Durham University). http://etheses.dur.ac.uk/13490/ http://etheses.dur.ac.uk/13490/1/C_Green_thesis_final_CORRECTIONS.pdf Green (2019) noted: "The source of a platinum peak identified in the Greenland Ice Sheet Project 2 (GISP2) ice core associated with high platinum/iridium (Pt/Ir) and platinum/aluminium (Pt/Al) ratios, and previous research attributed the anomaly to an
Asteroids, Nanodiamonds, and the Younger Dryas
Oxytropidoceras posted a topic in Fossil NewsAsteroids, Micro Diamonds, and the Younger Dryas with Jens Notroff: Archaeological Fantasies Ep 106 Archaeological Fantasies Podcast https://player.fm/series/archaeological-fantasies-podcast/asteroids-micro-diamonds-and-the-younger-dryas-with-jens-notroff-archaeological-fantasies-ep-106 https://player.fm/series/archaeological-fantasies-podcast The Deus ex machina for the destruction of civilizations, either imaginary or real, seems to be comet impacts. Remix – Atlantis in Sardinia with Dr. Emily Holt Archaeological Fantasies ep 107 ht
The "Great Expectations Syndrome" and Mass Extinctions
Oxytropidoceras posted a topic in Fossil NewsBelow is an interesting paper about mass extinctions. Racki, G. 2012. The Alvarez impact theory of mass extinction; limits to its applicability and the "great expectations syndrome". Acta Palaeontologica Polonica 57 (4): 681-702. https://www.app.pan.pl/archive/published/app57/app20110058.pdf https://www.app.pan.pl/article/item/app20110058.html https://www.researchgate.net/publication/239739714_The_Alvarez_impact_theory_of_mass_extinction_limits_to_its_applicability_and_the_great_expectations_syndrome https://www.researchgate.net/profile/Grzegorz_Racki
60-Million-Year-Old Meteorite Impact Ejecta Discovered on Scotland’s Isle of Skye
Oxytropidoceras posted a topic in Fossil NewsAlien Minerals Discovered at Ancient Meteorite Strike Site in Scotland by Katherine Hignett, Newsweek, Dec. 15, 2017 http://www.newsweek.com/skye-meteorites-alien-mineral-749103 60-Million-Year-Old Meteorite Impact Zone Discovered on Scotland’s Isle of Skye, Sci News, December 15, 2017 http://www.sci-news.com/geology/meteorite-impact-scotlands-isle-of-skye-05539.html “A team of geologists has found 60 million-year-old ejecta from a previously unknown meteorite impact on the Isle of Skye, northwest Scotland. This is the first recorded m
Comet Strike May Have Triggered the Paleocene-Eocene Thermal Maximum (PETM)
Oxytropidoceras posted a topic in Fossil NewsExtraterrestrial Impact Preceded Ancient Global Warming Event By Mary L. Martialay, Rensselaer Polytechnic Institute, October 13, 2016 http://news.rpi.edu/content/2016/10/13/extraterrestrial-impact-preceded-ancient-global-warming-event Ancient Meteorite Impact Rained Debris On US East Coast By Calla Cofield, Space.com, October 13, 2016 http://www.space.com/34384-ancient-meteorite-impact-hit-us-east-coast.html Yours, Paul H.
Impact Origin of Paleocene-Eocene Thermal Maximum (PETM) ?
Oxytropidoceras posted a topic in Fossil NewsGlass bits, charcoal hint at 56-million-year-old space rock Impact. Timing coincides with period of rapid warming perhaps sparked by comet, Thomas Summer, Science News. https://www.sciencenews.org/article/glass-bits-charcoal-hint-56-million-year-old-space-rock-impact Schaller, M.F., and others, 2016, Distal impact ejecta at Paleocene-Eocene boundary sections on the Atlantic Margin. Geological Society of America annual meeting, Denver, September 27, 2016. Geological Society of America Abstracts with Programs. Vol. 48, No. 7. https://gsa.conf