What boundary is the Great Rift Valley in Africa?

The East African Rift Valley (EAR) is a developing divergent plate boundary in East Africa. Here the eastern portion of Africa, the Somalian plate, is pulling away from the rest of the continent, that comprises the Nubian plate.

Is the Great Rift Valley a convergent boundary?

Areas where plates are colliding form convergent boundaries, and areas where plates are expanding create divergent boundaries. Rift valleys are formed by divergent boundaries that involve continental plates.

Is the Great Rift Valley a divergent plate boundary?

A rift valley is a lowland region formed by the interaction of Earth’s tectonic plates. … Many rift valleys are part of “triple junctions,” a type of divergent boundary where three tectonic plates meet at about 120° angles. Two arms of the triple junction can split to form an entire ocean.

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Where is the Great Rift Valley in Africa?

The Rift Valley, located in Eastern Africa, covers just over 2% of the continent and spreads over seven countries (Map 5 and Table 29). min. max. The Rift Valley consists of a group of independent interior basins, extending from Djibouti in the north to Tanzania in the south, nearly half being located in Ethiopia.

How was the Great Rift Valley of Africa formed?

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.

What boundary forms rift valleys?

Divergent plate boundaries, which are associated with the formation of rift valleys, occur when plates move away from one another. Convergent plate boundaries move toward one another, pushing into one another and are likely to create mountain ranges. Transform boundaries involve two plates sliding past one another.

What is a divergent boundary?

A divergent boundary occurs when two tectonic plates move away from each other. Along these boundaries, earthquakes are common and magma (molten rock) rises from the Earth’s mantle to the surface, solidifying to create new oceanic crust. The Mid-Atlantic Ridge is an example of divergent plate boundaries.

Is a rift valley convergent or divergent?

Many rift valleys are part of “triple junctions,” a type of divergent boundary where three tectonic plates meet at about 120° angles. Two arms of the triple junction can split to form an entire ocean. The third, “failed rift” or aulacogen, may become a rift valley.

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What type of boundary is the Mariana trench?

In the case of a convergent boundary between two oceanic plates, one is usually subducted under the other, and in the process a trench is formed. “The Marianas Trench (paralleling the Mariana Islands), for example, marks where the fast-moving Pacific Plate converges against the slower moving Philippine Plate.

What kind of boundary is the Himalayas?

Typically, a convergent plate boundary—such as the one between the Indian Plate and the Eurasian Plate—forms towering mountain ranges, like the Himalaya, as Earth’s crust is crumpled and pushed upward.

Where are valleys found in Africa?

East African Rift System, also called Afro-Arabian Rift Valley, one of the most extensive rifts on Earth’s surface, extending from Jordan in southwestern Asia southward through eastern Africa to Mozambique. The system is some 4,000 miles (6,400 km) long and averages 30–40 miles (48–64 km) wide.

Where is the Great Rift Valley located What is special about this particular region?

The Great Rift Valley is part of an intra-continental ridge system that runs through Kenya from north to south.

Lakes.

UNESCO World Heritage Site
Location Rift Valley Province, Kenya
Includes Lake Elementaita Lake Nakuru Lake Bogoria
Criteria Natural: (vii), (ix), (x)
Reference 1060rev

What type of plate boundary is located along the Lake Baikal Rift Zone in Russia?

The Baikal Rift zone is a large high-latitude Cenozoic continental rift in Asia that formed along the plate boundary between the Siberian craton and a collage of microplates to the southeast.

What type of boundary is the East African Rift?

The East African Rift Valley (EAR) is a developing divergent plate boundary in East Africa. Here the eastern portion of Africa, the Somalian plate, is pulling away from the rest of the continent, that comprises the Nubian plate.

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Why is the Great Rift Valley the most distinguishing feature of the African continent?

The system of rift valleys that characterizes the African continent represents a perfect environment to understand the evolution of mankind; for the important paleoanthropological discoveries in Ethiopia, Kenya, Tanzania, Uganda and Zaire, the African rift valleys are indeed considered the “cradle of mankind”, that is …

What is the formation of Ethiopian rift valley?

The Rift Valley of Ethiopia, like its extension in East and central Africa, was formed by extensive downfaulting of the earth’s crust at the end of the Tertiary and at the beginning of the Pleistocene period.