The day the dinosaurs' world fell apart - Wed 11 Sep 10:29 GMT

Scientists reconstruct the seconds, minutes and hours following the dino-killing asteroid impact.

  The team pulled up a great long core of rock but it's a particular 130m-long section that essentially documents the first day of what geologists call the Cenozoic Era, or as some others like to refer to it: the Age of Mammals.

  But the water keeps coming, filling up the crater, and the top 80-90m of the core section is built from all the debris that was in this water and ultimately rained out.

  Prof Gulick's team is confident in the tsunami interpretation because mixed in with the deposits are soil markers, and charcoal - evidence of the great fires that would have been triggered on nearby landmasses by the heat of the impact - all brought back to the crater by the returning wave pulse.