What made the discovery even more startling was the central valley, which Tharp believed was a rift—a place where the ocean ...
As well as the basalt that is erupted into the valley and injected into the rocks below to create new ocean floor, sedimentary rocks will also be deposited within the rift valley. At first the rift ...
His ship was equipped for sounding the ocean floor, which was useful for Hess ... With the discovery in 1953 of the Great Global Rift, a volcanic valley running along the midocean ridges, Hess ...