Posted on 06/04/2016 11:13:08 AM PDT by JimSEA
Fascinating!!!
Yeah, it would be very cool go and see all that first hand... Very cool indeed!
If I am remembering right, I think that they believe that those kimberlites are from the middle to lower mantle, not the core area. And they wouldn’t be from before the core was formed, as it was formed 30-50 million years after the formation of the solar system/earth, predating the oldest rocks and these rocks in particular by many millions to billions of years. The ages of emplacement of the south african kimberlites is approximately 120 million years BP and the australian ones 1.2 billion years BP.
Disclaimer: Opinions posted on Free Republic are those of the individual posters and do not necessarily represent the opinion of Free Republic or its management. All materials posted herein are protected by copyright law and the exemption for fair use of copyrighted works.