That ridge, it was later discovered, extended through the major oceans of the world. It is now called the Mid-Ocean Ridge ... called the Great Global Rift, came very close to land.

A single mid-ocean ridge system connects the world's oceans, making the ridge the longest mountain range in the world. On land, giant troughs such as the Great Rift Valley in Africa form where ...

An ocean may in time develop from a rift in the Afar Triangle, in the Horn of Africa which will be close to America.

They call this tectonic plate boundary zone the East African Rift Valley (EAR), part ... the rift producing a new narrow ocean basin with its own mid-ocean ridge between the Nubian and Somalian ...

The small fissure is linked to the 22-million-year-old, 4,000-mile-long East African Rift System ... mirrors the mechanisms occurring along mid-ocean ridges where new oceanic crust is generated.

As well as the basalt that is erupted into the valley ... new ocean basin gets wider and wider. New ocean floor is generated at the diverging boundary, and the edges of the now-split continents get ...