ancient asteroid clout

At http://wattsupwiththat.com/2015/03/23/worlds-largest-asteroid-impacts-fo… … a cosmic object created a 400km wide impact zone in Australia's Warburton Basin. Apparently, the crater had disappeared – but geophysicists have rediscovered it. Dr Andrew Glikson, a well known contributor to the Benny Peiser CcNET email thread some years ago (now preserved at Bob Kobres web site), said the impact zoane was found during drilling operations as part of geothermal research. It was a double whammy, an asteroid that had split into two pieces prior to impact. The date has yet to be settled. However, over at www.dailymail.co.uk/news/article-3007311/Australia-s-big-bang-Scientists… … the headline claims the asteroids helped cause the extinction of the dinosaurs. However, a figure of 300 millions years ago, or even older, pans out long before the dinosaur era, so some mixed up high jinks here.