Formation of the Rift Valley in 3D

Play or slide through time to see the crust split along faults and the middle block sink.

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Questions students ask

How was the Great Rift Valley formed?

Mainly by tension: the crust was pulled apart along parallel normal faults and the land between them sank.

What is the difference between a rift valley and a block mountain?

A rift valley is a sunken block between faults; a block mountain (horst) is a block raised between faults.

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