Common questions

What is the Great Rift Valley formed by?

What is the Great Rift Valley formed by?

Geologists know that the 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.

Is rift valley a fold?

A rift valley is formed on a divergent plate boundary, a crustal extension or spreading apart of the surface, which is subsequently further deepened by the forces of erosion. This discussion on Rift valleys are formed between two . A)Fold mountain B)Block mountain C)Residual mountain D)Volcanic mountain .

What form of geological activity does the Great Rift Valley?

Such land-based rift valleys often lie where budding tectonic plates begin to tear away from one another. This separation process is known as rifting and is associated with the formation of divergent plate boundaries. As the Earth’s crust breaks apart along a boundary, the ground sinks to create the rift valley.

What type of plate boundary is the Great Rift Valley on?

divergent plate boundary
Today, the term is most often used to refer to the valley of the East African Rift, the divergent plate boundary which extends from the Afar Triple Junction southward across eastern Africa, and is in the process of splitting the African Plate into two new separate plates.

What formed the Great Rift Valley quizlet?

The Great Rift Valley was formed when two tectonic plates split apart and left a rift. List some of the spectacular features that you would find in the Great Rift Valley. You would find mountains, escarpments, volcanoes, rivers, and large lakes in the Great Rift Valley.

What is a rift valley in geography?

A rift valley is a lowland region that forms where Earth’s tectonic plates move apart, or rift. Rift valleys are found both on land and at the bottom of the ocean, where they are created by the process of seafloor spreading.

Which plate boundary is formed between Philippine plate and Eurasian plate?

Between the Philippine Sea Plate and the Eurasian Plate is the Philippine Trench, the East Luzon Trench, and the Manila Trench.

How are rift valleys formed and what makes the Jordan Rift Valley significance?

The Jordan Rift Valley was formed many millions of years ago in the Miocene epoch (23.8 – 5.3 Myr ago) when the Arabian Plate moved northward and then eastward away from Africa. One million years later, the land between the Mediterranean and the Jordan Rift Valley rose so that the sea water stopped flooding the area.

How did the Great Rift Valley come to be?

The Rift Valley is the result of an ancient series of faults, rifts, and volcanoes deriving from the shifting of tectonic plates at the junction between the Somalian and the African plates.

Where are the deepest rift valleys on Earth?

Many of Earth’s deepest rift valleys are found underwater, dividing long mountain ranges called mid-ocean ridge s. As tectonic plates move away from one another at mid-ocean ridges, molten rock from the mantle may well up and harden as it contacts the frigid sea, forming new oceanic crust at the bottom of the rift valley.

Are there any rift valleys on continental lithosphere?

Very few active rift valleys are found on continental lithosphere. The East African Rift, the Baikal Rift Valley, the West Antarctic Rift, and the Rio Grande Rift are Earth’s major active continental rift valleys. The East African Rift is part of the “Great Rift Valley” system discussed below.

How big is the Rift Valley in the Pacific Ocean?

Over millions of years, the Mid-Atlantic Ridge has formed rift valleys as wide as 15 kilometers (9 miles). In the Pacific Ocean, the East Pacific Rise has created rift valleys where the Pacific plate is separating from the North American plate, Cocos plate, Nazca plate, and Antarctic plate.

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