Tuesday, April 3, 2012

Fossilized Rain Shower

Raindrops captured in the soft ash of a volcanic eruption in South Africa 2.7 billion years ago have been used to calculate the density of Earth's prehistoric atmosphere, a value no greater than 1.3 kilograms per cubic meter and very close to today's value of 1.2 kg/m3.
Posted by assurbanipaul at 5:26 PM
Labels:

No comments:

Post a Comment

Subscribe to: Post Comments (Atom)