This all is the way science is done – the nitty gritty papers that support or conflict with predictive concepts like the Firestone et al team came up with. Do the little things, the detailed studies support it or do they undercut it? If the big picture idea doesn’t hold water, it will begin show up in papers done at this level. That this and the Greenland black mat and various other studies seem to add weight to the Y-D impact theory, they begin to outweigh the Holliday and Pinter sloppy hatchet jobs. This is as it should be. The old guard will always be able to drag out bits of their memes and piece together something arguing that the existing theories don’t need no stinkin’ changes. New studies are tending more and more to mention Firestone. This lends credence to Firestone’s ideas, as they wouldn’t mention it if they didn’t in the future want to be seen as having been open to it – but only if they think it has merit. Ergo, they DO think it has merit. That doesn’t mean it is RIGHT. But it does mean it makes some sense, and Firestone will be the first to tell everyone that it isn’t a finished product. With so many sites producing evidence, but no single clear event or ground zero found yet, it is this level of evidence that will allow Firestone or someone else to fit the pieces together. Without enough pieces it is gobbledgook. So finding more pieces is a GOOD thing. I am excited that these pieces are turning up. Effort is being made on just this time period. Focus on this is excellent. It means that others want to be part of the unraveling. Firestone has most everything he found being replicated by others – surely a sign he was on the right trail. No, the smoking gun hasn’t been found yet. With the possible variations of impact at the time ice sheets and ocean covered the world, the evidence will not conform to the prior concept of meteor impacts. That it almost certainly was a comet means people have to collect evidence of cometary impacts, which are different from meteors, but also different from each other. So, dozens or scores of types of cometary impacts may need to be sorted out and identified before someone can connect the dots on the Y-D impactor. In the absence of a clearly identified type, Firestone is a sitting duck. Yet at the same time, people are slowly coming out of the woodwork to support his basic premise. Does this study prove anything? Not by itself. Circumstantially, it adds weight for SOMETHING having happened. Everyone gets to get in on the sleuthing, and that makes it not only interesting, but also more fun than science usually is.