A rift valley is a linear shaped lowland between several highlands or mountain ranges created by the action of a geologic rift. … In many cases rift lakes are formed. One of the best known examples of this process is the East African Rift.
Is East African Rift a Rift Valley?
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.
Is the East African Rift is an example of?
The East African Rift Valley is an example of a divergent boundary in an area of continental crust. It is one the geologic wonders of the world, a place where the earth’s tectonic forces are presently trying to create new plates by splitting apart old ones.
Is the East African Rift an active rift?
Continental rifting requires the existence of extensional forces great enough to break the lithosphere. The East African Rift is described as an active type of rift, in which the source of these stresses lies in the circulation of the underlying mantle.
What is an example of a rift valley?
Rift valleys are found both on the continents and on the floor of ocean basins. … Other notable examples include the Baikal Rift Valley (Russia) and the Rhine Rift Valley (Germany).
How fast is Africa splitting apart?
The three plates are separating at different speeds. The Arabian plate is moving away from Africa at a rate of about 1 inch per year, while the two African plates are separating even slower, between half an inch to 0.2 inches per year, according to Macdonald.
Where is Africa splitting apart?
Scientists say a new ocean will form in Africa as the continent continues to split into two. The East African Rift system made up the western and eastern continental rifts, and stretches from the Afar region of Ethiopia down to Mozambique.
How did the East African Rift Valley form?
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’.
How Rift Valley is formed?
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. … Two arms of the triple junction can split to form an entire ocean.
What will happen if the East African rift continues?
If these motions continue, plate models (mentioned below) suggest that Africa would rotate clockwise and eventually crash into Europe in 50 Ma in the future. The rift is growing at a rate of one inch per year through the upwelling of magma underneath the continental crust (see Fig.
Is the Great Rift Valley getting bigger?
The crack, only recently exposed from its hiding place in the Earth, is part of the Great Rift Valley. … The rifts are growing larger as two tectonic plates, the Somali plate in the east and the Nubian plate in the west, move away from each other.
What countries does the rift Valley go through?
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.
|Name of basin||Total area of basin||Area in the country|
|Southern lakes:||178 800|
Which is the longest rift valley in the world?
|Earth||Great Rift Valley||6,000 km (3,700 mi)|
|Canadian Arctic Rift System||4,800 km (3,000 mi)|
|West Antarctic Rift System|
|Midcontinent Rift System||2,000 km (1,200 mi)|
What are the features of a rift valley?
Rift Valley Landforms Have 2 Main Characteristics:
A portion of land that drops, forming a valley. Bordered by fault zones and separating land masses.
What is the importance of Rift Valley?
The rift valleys are enormous fractures affecting the continental plates that widen progressively with time: they represent the first stages in the complex process of extension and rupture of continents and anticipate the development of new oceanic basins between them.