400 million years to build a planet?

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400 million years to build a planet?

stevebowers

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09-22-2015, 03:28 PM

That's right. At least ten times as much biogenic oxygen as currently exists in our atmosphere was absorbed by the crust before the air reached its current equilibrium; this did not happen overnight.

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400 million years to build a planet? - by Cray - 09-21-2015, 10:40 AM

RE: 400 million years to build a planet? - by stevebowers - 09-21-2015, 03:41 PM

RE: 400 million years to build a planet? - by Bear - 09-22-2015, 09:53 AM

RE: 400 million years to build a planet? - by Matterplay1 - 09-22-2015, 11:10 AM

RE: 400 million years to build a planet? - by stevebowers - 09-22-2015, 03:28 PM

RE: 400 million years to build a planet? - by Cray - 09-22-2015, 08:57 PM

RE: 400 million years to build a planet? - by stevebowers - 09-22-2015, 11:48 PM

RE: 400 million years to build a planet? - by Cray - 09-23-2015, 03:35 AM

RE: 400 million years to build a planet? - by stevebowers - 09-23-2015, 03:36 PM

RE: 400 million years to build a planet? - by Drashner1 - 09-24-2015, 02:11 AM

RE: 400 million years to build a planet? - by stevebowers - 09-24-2015, 06:41 AM

RE: 400 million years to build a planet? - by Drashner1 - 09-24-2015, 12:15 PM

RE: 400 million years to build a planet? - by Cray - 09-24-2015, 08:49 PM

RE: 400 million years to build a planet? - by stevebowers - 09-25-2015, 03:52 AM

RE: 400 million years to build a planet? - by Bear - 09-26-2015, 01:51 AM

RE: 400 million years to build a planet? - by Drashner1 - 09-26-2015, 11:34 AM

RE: 400 million years to build a planet? - by Bear - 09-27-2015, 07:29 AM

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