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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 [...]
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 [...] [...] Vance Holliday and others in this email exchange have kindly allowed me to post their chatter to the Tusk.I will clean it up later. But for now – here you go…..
On 9/24/2010 2:38 PM, Vance Holliday wrote: Richard: All I asked was why is it that when us skeptics can’t reproduce data or confirm hypothesis for The Impact Team we are accused of slipshod science or incompetence, yet The Impact team seems to always find what they are looking for??? Has anyone on The Impact Team critically looked at their own data? Questioned their hypothesis? Isn’t that was science is about? And are we really expected to believe that Vance Haynes can’t find the Black Mat??? I guess I could just as easily say to you “Fortunately science is not based on opinions but instead on measurements. Dozens of scientists bringing unique skills to the subject have provided an enormous amount of experimental data providing no support for the idea of an impact at the onset of the YDB. A few, highly biased scientists threw together some slipshod experiments to support their hypothesis.†I must confess to growing very weary of unsubstantiated accusations of incompetence, slipshod science, and bias toward everyone who doesn’t buy or who presents data contrary to the YD Impact Hypothesis. All of the people who tested the hypothesis and came up wanting or those who tried to reproduce the data are just trying to figure out what is going on. I know many of them. All are highly respected in their various fields. None had any biases or agendas that I am aware of. What is your basis for calling them “highly biasedâ€? On what basis do you decide that their experiments are “slipshodâ€? Because their data don’t confirm yours??? Unfortunately, the overcrowded session ran late, and there was no time for discussion or questions. Even when their conclusions were challenged, most of the scientists in the audience chose not to respond. The result was a lost opportunity for real debate. Perhaps not surprisingly, the AGU session received very little press attention. Indeed, following the AGU and GSA meetings, the YD impact hypothesis seems to have [...] C. Vance Haynes Jr.a,1, +Author Affiliations aSchool of Anthropology and Department of Geosciences,University of Arizona, PO Box 210030, Tucson, AZ 85721 bDepartment of Geosciences, University of Arizona, PO Box 210077, Tucson, AZ 85721 cLunar and Planetary Laboratory, Department of Planetary Sciences, University of Arizona, PO Box 210092, Tucson, AZ 87521 dSchool of Anthropology, University of [...] An international team of scientists representing a number of disciplines locate bizarre materials and ET impact markers in a distinct layer of well-dated sediments from the initiation of the Younger Dryas and publish their findings in a major scientific journal. 2007 Firestone et.al. in PNAS? Nope. W.C. Mahaney et. al. Geomorphology — March 2010. In a total surprise to me [...] Tom Stafford was an expert among experts at the Fall Meeting. I became aware of Tom Stafford when Redefining the Age of Clovis: Implications for the Peopling of America was published in Science in 2007. He is the Former Director of the Laboratory of AMS Radicarbon Research at University of Colorado. And for more than decade he has been President of Stafford Research Laboratories — the nation’s top private dating laboratory. He is to be taken seriously when, among other things, he tells you how old something is. I was looking forward to his presentation more than any other at the Fall Meeting. I was not disappointed. Tom — who has never previously published with the YD team — laid out a very, very, tight and narrow layer of evidence supporting the purported event. In short, 151 centimeters below the surface at the pefectly stratified Hall’s Cave Paleo site in Texas was a 1 to 2 cm layer of dirt that was host to trillions of nanodiamonds and high levels of soot known as aciniform. Not above — not below.
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