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Author Topic: What is the oldest water on Earth?  (Read 2432 times)

Offline thedoc

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What is the oldest water on Earth?
« on: 16/05/2013 08:50:13 »
Water that hasn't seen the light of day, or had contact with the Earth's atmosphere, for 2.5 billion years has been discovered in Canada

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« Last Edit: 16/05/2013 08:50:13 by _system »


 

Offline katesisco

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Re: What is the oldest water on Earth?
« Reply #1 on: 28/07/2013 23:57:26 »
Then in 2011, scientists at the New York Center for Astrobiology at Rensselaer Polytechnic Institute used the oldest minerals on Earth to reconstruct the atmospheric conditions present on Earth very soon after its birth. The findings were the first direct evidence of what the ancient atmosphere of the planet was like soon after its formation and directly challenge years of research on the type of atmosphere out of which life arose on the planet.

The scientists showed that the atmosphere of Earth just 500 million years after its creation was not a methane-filled wasteland as previously proposed, but instead was much closer to the conditions of our current atmosphere. The findings, in a paper titled "The oxidation state of Hadean magmas and implications for early Earth's atmosphere," have implications for our understanding of how and when life began on this planet and could begin elsewhere in the universe. The research was funded by NASA. 

'typical atmosphere' implies clouds, clouds imply water so 500 m y after Earth's creation water existed and probably was extant. 
 

Offline Bill S

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Re: What is the oldest water on Earth?
« Reply #2 on: 03/08/2013 02:21:43 »
A geologist friend of mine had a spherical hollow flint, about the size of a tennis ball which contained water.  An area had been polished, producing a small window through which the water could be seen.  Although this is far from being the world’s oldest water, it must have been trapped in that flint since the Cretaceous.
 

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Re: What is the oldest water on Earth?
« Reply #2 on: 03/08/2013 02:21:43 »

 

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