Date: 20/06/2019 20:51:46
From: Tau.Neutrino
ID: 1402141
Subject: Plate tectonics...climate and complex life....
How plate tectonics may have changed the climate and paved the way for complex life to evolve
Evolution is usually a gradual process, but about half a billion years ago it took off at a gallop in an event that’s now known as the Cambrian Explosion. One of the leading theories is that this was thanks to a huge spike in oxygen levels, and now a team may have found where all that oxygen come from – plate tectonics.
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Date: 20/06/2019 20:58:37
From: mollwollfumble
ID: 1402146
Subject: re: Plate tectonics...climate and complex life....
Tau.Neutrino said:
How plate tectonics may have changed the climate and paved the way for complex life to evolve
Evolution is usually a gradual process, but about half a billion years ago it took off at a gallop in an event that’s now known as the Cambrian Explosion. One of the leading theories is that this was thanks to a huge spike in oxygen levels, and now a team may have found where all that oxygen come from – plate tectonics.
more…
Hmm. Possible, but building a hypothesis based on a rise in trace elements from increased weathering is going to be next to impossible to prove.
Date: 20/06/2019 21:49:44
From: PermeateFree
ID: 1402165
Subject: re: Plate tectonics...climate and complex life....
There must have been nutrient enrichment of the oceans to stimulate the growth of phytoplankton that produced to oxygen. That has been commonly accepted, with the only variance here being where the additional nutrients came from. Don’t think this concept is radically new and is not going to change opinions by much, if at all.