Giant regions of the mantle where seismic waves slow down may have formed from subducted ocean crust, a new study finds.
The Three Gorges Dam in China is a structure so huge that it controls one of the world's most powerful rivers—and even ...
Some studies have suggested that they're material from the ancient Earth — either a layer of primordial unmixed rock from the planet's formation or a leftover hunk of the giant space rock that ...
Your institution does not have access to this book on JSTOR. Try searching on JSTOR for other items related to this book. https://www.jstor.org/stable/j.ctt5hjzct.2 ...