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At the end of the Pleistocene a Younger Dryas black mat was deposited on top of the Pleistocene sediments in many parts of North America. A study of the magnetic fraction (~10,900±50 B.P.) from the basal section of the black mat at Murray Springs, AZ revealed the presence of amorphous iron oxide framboids in [...]
Skeptics of the YDIB hypothesis frequently state that “no one can reproduce the YDIB results” (Kerr, 2010); “nobody has found anything” (Kerr, 2010); there is a “lack of reproducibility of data” (Holliday, 2011); and “unique peaks in concentrations at the YD onset have yet to be reproduced” Pinter (2011). These casual dismissals are hurtful to the investigation, and demonstrably false. That independent researchers have identified materials diagnostic of an event of cosmic proportions at 12.9 before present should not be subject to debate. To wit, I offer below citations of published research confirming the original findings of Firestone, et. al. in 2007. Note that some of these researchers disagree with an extraterrestrial impact as cause and offered alternate hypotheses, but, in every case, those speculating about causation have not conducted any analytical work to determine if their hypotheses are correct. INDEPENDENT GROUPS with positive results:
MAGNETIC SPHERULES. Baker et al. (2008) Fayek (2008) Ge et al. (2009, page 1) Haynes et al. (2010, page 1) LeCompte et al. (2010) Mahaney (2010a, page 10) Wu (2011) NANODIAMONDS. Ge et al. (2009, page 1) Tankersley (2009) Tian (2010, page 1) Van Hoesel (2011) Bement et al. (2011)
IRIDIUM. Beets et al. (2008, page 1) Sharma et al. (2009) Haynes et al. (2010, page 1) Mahaney (2010a, page 10) Marshall (2011) Wu (2011)
CARBON SPHERULES and GLASS-LIKE CARBON (some w/ NANODIAMONDS) Mahaney (2010a, page 10) Tian (2010, page 1) Courty et al. (2010) Ge et al. (2009, page 1) Baker et al. (2008, page 1) Tankersley (2009) CHARCOAL AND BIOMASS BURNING: Mahaney et al. (2010b) Ge et al. (2009) Courty et al. (2010)
HUMAN AND ANIMAL POPULATION DECLINES. Schroeder (2009) Steele (2010) CRATER or IMPACT. Higgins, et al. (2011)
REFERENCES. Baker DW, Miranda PJ, Gibbs KE. (2008) Montana Evidence for Extra-Terrestrial Impact Event That Caused Ice-Age Mammal Die-Off. American Geophysical Union, Spring Meeting 2008, abstract #P41A-05. Beets C, Sharma M, Kasse K, Bohncke S. (2008) Search for Extraterrestrial Osmium at the Allerod – Younger Dryas Boundary. American Geophysical Union, Fall Meeting 2008, abstract #V53A-2150. Bement L, Carter BJ, Simms A, Madden A. (2011) The Bull Creek valley stream terraces, buried soils, and paleo-environment during the Younger Dryas in the Oklahoma Panhandle, USA. Paper #1447, XVIII INQUA-Congress, 21-27 July 2011 in Bern, Switzerland. Internet science gadfly, Mr. Thomas Lee Elifritz, suggested a couple of years ago that the subtle elevation feature in Ontario described in his monograph below might be a candidate for what might remains after a large impact into the Pleistocene ice sheet. Like Mr. Elifritz or not, it is an interesting feature and I thought [...] PROGRAM NOTE: Can anyone “see” the embedded paper below within the window without a click?! For some reason I cannot… UPDATE: I can see it now. I should note, however, that these debris were from something that would have CAUSED a tsunami and then rained from above — not from a wave that [...]
The titles for the talks and posters at the upcoming INQUA session, The Enigmatic Younger Dryas, have been posted for some time. Typical of scientific conferences, the narrative abstract revealing the findings (or musings) of the presenter is posted later, a few weeks before the conference. The abstracts for the conference have now been published. Here again [...]
Mystery photo of Black Mat in Holland Han Kloosterman, a wonderful gentleman catastrophist in the Netherlands, has shared an all too typical story with the Tusk revealing the enormous challenge of investigating the Younger Dryas Boundary hypothesis. Han has long advertised the special nature of the “Usselo Boundary,” a Younger Dryas strata found in [...] The revelation that Schwassmann-Wachmann (hereafter SW3) left a cosmic calling card during it’s last pass is significant. The comet returns every 5.4 years. The next pass should be around November 2011. Some time around then we could expect another cometary shower. The intensity of the encounter would seem to be a function of the degree of fragmentation of [...] Impact hypothesis loses its sparkle Link to Press Release from the Washington University in St. Louis About 12,900 years ago, a sudden cold snap interrupted the gradual warming that had followed the last Ice Age. The cold lasted for the 1,300-year interval known [...] |
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