What caused the younger dryas? Did it kill the megafauna? How did humans react? Are archaeologists hiding the truth? (No)
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Thumbnail & Illustration: Ettore Mazza
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Video from INAH TV on the mammoth excavation:
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Disclaimer: Use my videos as a rough guide to a topic. I am not an expert, I may get things wrong. This is why I always post my sources so you can critique my work and verify things for yourselves. Of course I aim to be as accurate as possible which is why you will only find reputable sources in my videos. Secondly, information is always subject to changes as new information is uncovered by archaeologists.
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Sources:
1 – Milosavljevich, S. “Pointing to the wrong corner of the screen”. Stefan Milo Youtube Channel. 2019.
2 - Carlson, A.e. “PALEOCLIMATE | The Younger Dryas Climate Event.” Encyclopedia of Quaternary Science, 2013, pp. 126–134., doi:10.1016/b978-0-444-53643-3.00029-7.
3 - Schenk, Frederik, et al. “Warm Summers during the Younger Dryas Cold Reversal.” Nature Communications, vol. 9, no. 1, 2018, doi:10.1038/s41467-018-04071-5.
4 - Reeves, Jessica M., et al. “Climate Variability over the Last 35,000 Years Recorded in Marine and Terrestrial Archives in the Australian Region: an OZ-INTIMATE Compilation.” Quaternary Science Reviews, vol. 74, 2013, pp. 21–34., doi:10.1016/j.quascirev.2013.01.001.
5 - Condron, A., and P. Winsor. “Meltwater Routing and the Younger Dryas.” Proceedings of the National Academy of Sciences, vol. 109, no. 49, 2012, pp. 19928–19933., doi:10.1073/pnas.1207381109.
6 - Carlson, A. E., et al. “Geochemical Proxies of North American Freshwater Routing during the Younger Dryas Cold Event.” Proceedings of the National Academy of Sciences, vol. 104, no. 16, 2007, pp. 6556–6561., doi:10.1073/pnas.0611313104.
7 - Tarasov, Lev, and W.r. Peltier. “Arctic Freshwater Forcing of the Younger Dryas Cold Reversal.” Nature, vol. 435, no. 7042, 2005, pp. 662–665., doi:10.1038/nature03617.
8 - Thiagarajan, Nivedita, et al. “Abrupt Pre-Bølling–Allerød Warming and Circulation Changes in the Deep Ocean.” Nature, vol. 511, no. 7507, 2014, pp. 75–78., doi:10.1038/nature13472.
9 - Manabe, Syukuro, and Ronald J. Stouffer. “Coupled Ocean-Atmosphere Model Response to Freshwater Input: Comparison to Younger Dryas Event.” Paleoceanography, vol. 12, no. 2, 1997, pp. 321–336., doi:10.1029/96pa03932.
10 - Teller, J. T. “Importance of Freshwater Injections into the Arctic Ocean in Triggering the Younger Dryas Cooling.” Proceedings of the National Academy of Sciences, vol. 109, no. 49, 2012, pp. 19880–19881., doi:10.1073/pnas.1218344109.
11 - Renssen, Hans, et al. “Multiple Causes of the Younger Dryas Cold Period.” Nature Geoscience, vol. 8, no. 12, 2015, pp. 946–949., doi:10.1038/ngeo2557.
12 - Lynch‐Stieglitz, J., M. W. Schmidt, and W. B. Curry (2011), Evidence from the Florida Straits for Younger Dryas ocean circulation changes, Paleoceanography, 26, PA1205, doi:10.1029/2010PA002032.
13 - Firestone, R. B., et al. “Evidence for an Extraterrestrial Impact 12,900 Years Ago That Contributed to the Megafaunal Extinctions and the Younger Dryas Cooling.” Proceedings of the National Academy of Sciences, vol. 104, no. 41, 2007, pp. 16016–16021., doi:10.1073/pnas.0706977104.
14 - Israde-Alcantara, I., et al. “Evidence from Central Mexico Supporting the Younger Dryas Extraterrestrial Impact Hypothesis.” Proceedings of the National Academy of Sciences, vol. 109, no. 13, 2012, doi:10.1073/pnas.1110614109.
15 - Petaev, M. I., et al. “Large Pt Anomaly in the Greenland Ice Core Points to a Cataclysm at the Onset of Younger Dryas.” Proceedings of the National Academy of Sciences, vol. 110, no. 32, 2013, pp. 12917–12920., doi:10.1073/pnas.1303924110.
16 - Thackeray, J. Francis; Scott, Louis; Pieterse, P. The Younger Dryas interval at Wonderkrater (South Africa) in the context of a platinum anomaly. Palaeontologia Africana, 2019
17 - Holliday, Vance T. “Problematic Dating of Claimed Younger Dryas Boundary Impact Proxies.” Proceedings of the National Academy of Sciences, vol. 112, no. 49, 2015, doi:10.1073/pnas.1518945112.
18 - Meltzer, D. J., et al. “Chronological Evidence Fails to Support Claim of an Isochronous Widespread Layer of Cosmic Impact Indicators Dated to 12,800 Years Ago.” Proceedings of the National Academy of Sciences, vol. 111, no. 21, 2014, doi:10.1073/pnas.1401150111.
19 - Holliday, Vance, et al. “A Blind Test of the Younger Dryas Impact Hypothesis.” Plos One, vol. 11, no. 7, 2016, doi:10.1371/journal.pone.0155470.
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