What type of boundary is the Great rift valley in Africa?

What type of boundary is the Great rift valley in Africa?

divergent plate boundary
The East African Rift Valley (EAR) is a developing divergent plate boundary in East Africa.

What type of landform is the African rift valley?

tectonic valley
A rift valley constitutes a type of tectonic valley and, as such, differs from river and glacial valleys, which are produced by erosional forces. A brief treatment of rift valleys follows. For full treatment, see tectonic basins and rift valleys.

Is the Great rift valley a mid-ocean ridge?

Many of Earth’s deepest rift valleys are found underwater, dividing long mountain ranges called mid-ocean ridges. Over millions of years, the Mid-Atlantic Ridge has formed rift valleys as wide as 15 kilometers (9 miles).

Is a rift valley a ridge?

The most extensive rift valley is located along the crest of the mid-ocean ridge system and is the result of sea floor spreading. Examples of this type of rift include the Mid-Atlantic Ridge and the East Pacific Rise. If they continue, continental rifts will eventually become oceanic rifts.

Which mid ocean ridge is spreading the slowest?

The Ridge is named after him, and the name was recognized in April 1987 by SCUFN (under that body’s old name, the Sub-Committee on Geographical Names and Nomenclature of Ocean Bottom Features). The ridge is the slowest known spreading ridge on earth, with a rate of less than one centimeter per year.

What is the difference between rift valley and Mid Ocean ridge?

If the boundary is found between two continental plates you are left with a rift valley. If two oceanic plates begin moving away from each other it creates a mid-oceanic ridge. Continental plates are less dense, and thus float much higher on the mantle.

What is the difference between Rift Valley and Mid Ocean Ridge?

What will eventually happen if a Rift Valley continues to pull apart?

If these two rift zones continue they will break apart the crustal plates they are located on and will create new plates. Sea water will flood the rift valleys and they will eventually become seas like the Red Sea.

Is the East African Rift part of the Great Rift Valley?

East African Rift. In the past, it was considered to be part of a larger Great Rift Valley that extended north to Asia Minor . The rift is a narrow zone that is a developing divergent tectonic plate boundary, where the African Plate is in the process of splitting into two tectonic plates, called the Somali Plate and the Nubian Plate,…

What causes the formation of the Rift Valley?

Or, the plates may be pulling apart from one another; this is what creates a rift valley. The African Rift, also known as the East African Rift System (or EARS), is actually a system of rifts created by the separating of the Nubian Plate and the Somalian Plate , which together comprise the African Plate of the African continent.

Where are the continental rift valleys on Earth?

Continental Rift Valleys 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.

What are the highest mountains in the Rift Valley?

The Western Rift, also called the Albertine Rift, is bordered by some of the highest mountains in Africa, including the Virunga Mountains, Mitumba Mountains, and Ruwenzori Range.

What type of boundary is the Great rift Valley in Africa?

What type of boundary is the Great rift Valley in Africa?

divergent plate boundary
The East African Rift Valley (EAR) is a developing divergent plate boundary in East Africa.

Is the African rift Valley constructive plate boundary?

Landforms associated with constructive plate boundaries rift valleys – such as the East African Rift Valley where the African plate is tearing itself apart.

What type of plate boundary occurs at the Red Sea African rift Valley )?

divergent ridge system
The Arabian Plate is rifting away from the African plate along an active divergent ridge system, to form the Red Sea and Gulf of Aden.

What type of landform is the African rift Valley?

tectonic valley
A rift valley constitutes a type of tectonic valley and, as such, differs from river and glacial valleys, which are produced by erosional forces. A brief treatment of rift valleys follows. For full treatment, see tectonic basins and rift valleys.

How is a rift valley formed?

A rift valley is a lowland region formed by the interaction of Earth’s tectonic plates. 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.

Is Mt St Helens a divergent boundary?

Mt. St. Helens is a volcano in Washington, near the Oregon border, in the Cascade Range. The Cascade Volcanoes, which stretch all from British Columbia through Northern California, are stratovolcanoes that have formed inland from a convergent plate boundary, where ocean crust is subducting below the continent.

What will eventually happen if a rift valley continues to pull apart?

If these two rift zones continue they will break apart the crustal plates they are located on and will create new plates. Sea water will flood the rift valleys and they will eventually become seas like the Red Sea.

Is Mt St Helens associated with a specific plate boundary?

Mount St. Helens sits on the plate boundary between Juan de Fuca and the North American plates (map above). The boundary is part of the so- called ‘Ring of Fire’ – the string of volcanoes that congregate around the margin of the Pacific Ocean.

What kind of plate boundary is the East African Rift Valley?

The East African Rift Valley (EAR) is a developing divergent plate boundary in East Africa. The Nubian and Somalian plates are also separating from the Arabian plate in the north, thus creating a ‘Y’ shaped rifting system. These plates intersect in the Afar region of Ethiopia at what is known as a ‘triple junction’.

What are the names of the rift valleys in Africa?

In a southwest direction, the fault continues as the Great Rift Valley, which split the older Ethiopian highlands into two halves. In eastern Africa, the valley divides into the Eastern Rift and the Western Rift. The Western Rift, also called the Albertine Rift contains some of the deepest lakes in the world.

How did the Great Rift Valley get formed?

divergent plate boundary Secondly, how is the Great Rift Valley 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.

Where does the East African Rift take place?

The East African Rift is described as an active type of rift. Beneath this rift, the rise of a large mantle plume is doming the lithosphere upwards (Ethiopian Highlands), causing it to weaken. The rifting started in the Afar region in northern Ethiopia at around 30 million years ago and propagating southwards towards Zimbabwe.

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