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 ...

Running along the top of this chain of mountains is a deep crack, called a rift valley ... ocean floor. The speed at which new ocean floor is created varies from one location on the ocean ridge ...

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 ...

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 ...

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.