In some way which, as yet, we understand but vaguely, both igneous and denudational differentiation then combined in developing the earth's crust. We now find in the latter all those rocks which ...
Beneath our feet is an almost limitless source of energy, but while a few lucky locations have geothermal heat close to the surface, the rest of the world will need to dig a lot deeper. The ...
"The work of the Lithoprobe research community has shown that the processes that continue to shape the continent today have been active through more than three billion years of Earth’s history." The ...