Tiny clues to collision in space (BBC) {meteor shower 470 MYA?}

[eppur_se_muova]

Evidence that a massive meteorite shower had an impact on Earth on a global scale 470 million years ago have been found on a Highlands beach.

Researchers from the University of Aberdeen uncovered tiny remnants of meteorites, smaller than a grain of sand, within rocks in Sutherland.

The find is linked to others made in China, the US and Australia.

The scientists think the meteorites - a result of a collision in space - triggered earthquakes and tsunami.

The university said the find near Durness confirmed previous scientific speculation that the meteorite shower - which followed a "catastrophic event" in an asteroid belt between Mars and Jupiter - was so vast in size that it affected locations across the globe.
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more: http://news.bbc.co.uk/2/hi/uk_news/scotland/highlands_and_islands/7795381.stm