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Oxytropidoceras

A great lecture and lengthy lecture about

Archean paleoenvironments, tectonics, 

geology, and some paleontology is:

 

Archean Surface Conditions

Ideas in Science

By Christoph Heubeck - RED18

Published on Mar 12, 2018

http://astrobiovideo.com/en/video/175

https://www.youtube.com/watch?v=yNEkQ8KV-aQ

 

It begins:

 

"Here is the the principal take-home take-home

message. All right. We know very little about the

early Earth and and therefore it's such an

interesting thing to talk about. We do know a bit

right. We know just enough to talk endlessly about

it but we do not know enough to supply you with

firm numbers that would put any issue too

firmly to arrest."

 

Yours,

 

Paul H.

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