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Showing results for tags 'younger dryas'.
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Late Paleocene age for Greenland’s Hiawatha impact structure
Oxytropidoceras posted a topic in Fossil NewsControversial impact crater under Greenland’s ice is surprisingly ancient New date of 58 million years undercuts idea that strike triggered recent 1000-year plunge in temperatures By Paul Voose, Science News, March, 9, 2022 Giant impact crater in Greenland occurred a few million years after dinosaurs went extinct by University of Copenhagen, PhysOrg Wikipedia article discussing Hiawatha impact structure The open access paper is: Kenny, G. G., and others, 2022, A Late Paleocene age for Greenland’s Hiawatha impact structure. Scie
Volcanic origin for Younger Dryas geochemical anomalies ca. 12,900 cal B.P.
Oxytropidoceras posted a topic in Fossil NewsTexas cave sediment upends meteorite explanation for global cooling by Baylor University August 1, 2020 https://phys.org/news/2020-07-texas-cave-sediment-upends-meteorite.html The paper is: Sun, N, Brandon, A.D., Forman, S.L., Waters, M.R. and Befus, K.S., 2020. Volcanic origin for Younger Dryas geochemical anomalies ca. 12,900 cal B.P. Science Advances, 6(31), eaax8587 https://advances.sciencemag.org/content/6/31/eaax8587 Related papers: Holliday, V.T., Bartlein, P.J., Scott, A.C. and Marlon, J.R., 2020. Ext
Younger Dryas platinum anomaly reported from South Carolina - Open Access paper
Oxytropidoceras posted a topic in Fossil NewsNew evidence that an extraterrestrial collision 12,800 years ago triggered an abrupt climate change for Earth, the Conversation, October 22, 2019 https://theconversation.com/new-evidence-that-an-extraterrestrial-collision-12-800-years-ago-triggered-an-abrupt-climate-change-for-earth-118244 the paper is: Moore, C.R., M.J. Brooks, A.C. Goodyear, T.A. Ferguson, A.G. Perrotti, S. Mitra, A. Listecki, B. King, D.J. Mallinson, C.S. Lane, B. Shapiro, J. Knapp, A. West, D.L. Carlson, W. Wolbach, T.R. Them, S.M. Harris, and S. Pyne-O’Donne
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
Why won’t this debate about an ancient cold snap die?
Quail posted a topic in Fossil NewsThis article appears in the July 7, 2018 issue of Science News with the headline, «The impact hypothesis that won't die: Critics are still unconvinced that a comet caused a mysterious cold snap 12,800 years ago» https://www.sciencenews.org/article/younger-dryas-comet-impact-cold-snap
Widespread Platinum Anomaly at Younger Dryas Onset Reported
Oxytropidoceras posted a topic in Fossil NewsThe discussion continues. Discovery of widespread platinum may help solve Clovis people mystery, University of South Carolina, March 9, 2017 https://www.sciencedaily.com/releases/2017/03/170309120656.htm http://www.sc.edu/uofsc/posts/2017/03/uofsc_archaeologists_discover_platinum_at_clovis_sites.php Moore, C.R., West, A., LeCompte, M.A., Brooks, M.J., Daniel Jr, I.R., Goodyear, A.C., Ferguson, T.A., Ivester, A.H., Feathers, J.K., Kennett, J.P. and Tankersley, K.B., 2017. documented at the Younger Dryas onset in North American sedimentary se