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Andrews [41]
3 years ago
13

What formed the Great Rift Valley? A. volcanic activity and tectonic movement B. a massive earthquake 200 years ago C. a mountai

n range west of the valley D. a massive basin in the valley's center
Geography
2 answers:
GarryVolchara [31]3 years ago
8 0

The great rift valley was formed by violent subterranean forces that tore apart the earth's crust. These forces caused huge chunks of the crust to sink between parallel fault lines and force up molten rock in volcanic eruptions.

IrinaK [193]3 years ago
3 0

Answer:

Correct Answer is A. volcanic activity and tectonic movement

Explanation:

The Great Rift Valley located in central and eastern Africa is a big Geological fracture, Its formation involved the Separation of tectonic plates in a process called Divergence, which also lead to volcanic activity.

In the Divergence process, the tectonic plates are expanded by the Earth's crust, Contrary to when two tectonic plates collide and form mountains, in a divergence process the plates are being separated, creating a big ditch or trench. When the rocks sink they form a "Graben" and volcanic cones from molten lava ascending because of the tectonic movement and pressure.

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The rivers, with their force and also with their chemical composition, manage to erode the rocks little by little, and than transport the eroded sediment. The transportation distance depends on the length of the river, as well as its speed.

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34kurt

Answer:

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