Note: this topic is from 1/28/2014. Thanks colorado tanker for the ping, and thanks Theoria for the topic.
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ping
> Seismologists at Liverpool have estimated that over the age of the Earth, the Japan subduction zone alone could transport the equivalent of up to three and a half times the water of all the Earth’s oceans to its mantle.
It’s interesting, but “could” means nothing — is there water down there in the first place? There’s a pocket of (fresh?) water deep under the Himalayas that accumulated in a great big crack along a fault line, amounting to one of the Great Lakes in volume.
Louis Frank noted that ‘his’ small comets, at their current rate of bombardment of the Earth, will have delivered enough water to fill Earth’s oceans during the 4.5 billion year existence of this rock, and points out that the rate of bombardment was probably higher earlier on.
Small Comets and Our Origins
http://www.freerepublic.com/focus/bloggers/1250694/posts
Solar System Ice: Source of Earth’s Water
http://www.freerepublic.com/focus/chat/2906461/posts
So, where did the water on Mars come from?
http://www.freerepublic.com/focus/news/1092484/posts
An Argument for the Cometary Origin of the Biosphere
http://www.freerepublic.com/focus/chat/1208497/posts
Note: this topic is from 1/28/2014. Thanks colorado tanker for the ping, and thanks Theoria for the topic.
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