Did a giant impact usher in the dinosaurs?

[pokerfan]

Did a giant impact 200 million years ago trigger a mass extinction and pave the way for the dinosaurs?

November 16, 2011

The authors of the paper also suggested that the enormous shock waves generated by the 2-kilometre asteroid, as it slammed to Earth at more than 25 kilometres per second, could account for unexplained ripples and disturbances in the late Triassic limestone and shale beds in western Britain -- sedimentary beds that coincide with the mass-extinction event. "When I read that," says Olsen, "I decided it was time to come over here and take a much closer look."

http://www.scientificamerican.com/article.cfm?id=did-a-giant-impact-usher-in-dinosaurs

[dipsydoodle]

1. Easy come : easy go

:shrug:

[Motown_Johnny]

2. Live by the impact, die by the impact

[dipsydoodle]

3. Even better

:rofl: