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.
What is the East African Rift an example of?
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.
What type of fault is the East African Rift Valley?
Together with the associated Ethiopian Rift, the tectonic boundary stretches from the southern Red Sea to central Mozambique. Landscapes in the rift valley can appear confusing. The most striking features in this view are the numerous, nearly parallel, linear fault lines that occupy the floor of the valley.
Is East African Rift is an example of mid ocean ridge?
If the process continues long enough and the continental crust is effectively separated, the continental rift graben turns into a normal mid-oceanic ridge. … The most prominent example of a continental rift is the East-African Rift Valley and its continuations into the Red Sea and the Gulf of Aden.
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).
What if African continent broke apart?
As the plates continue to pull away from each other, the rift valley will sink deeper and deeper, and water from the Red Sea will flood in to create a new ocean. Africa will become a lot smaller, as parts of southern Ethiopia and Somalia will drift off to form a new island.
How Rift Valley is 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.
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.
What will 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.
Why did the East African Rift Valley form?
Twenty-five million years ago, as plate tectonics began to pull apart eastern Africa, the landscape that would eventually be home to the first humans began to take shape. … The East African Rift Valley, as the region is known, formed where the Somalian and Nubian plates are pulling away from the Arabian Plate.
How did the Great African Rift Valley form?
Africa’s Great Rift Valley is a 6,000-mile crack (fissure) in the earth’s crust, stretching from Lebanon to Mozambique. … Geologists know that the Rift Valley was formed by violent subterranean forces that tore apart the earth’s crust.
Which location is on a major rift valley?
The most well-known rift valley on Earth is probably the so-called “Great Rift Valley System” which stretches from the Middle East in the north to Mozambique in the south. The area is geologically active, and features volcanoes, hot springs, geysers, and frequent earthquakes.
Why do rift valleys have volcanoes?
Rift volcanoes form when magma rises into the gap between diverging plates. They thus occur at or near actual plate boundaries. … Earthquake swarms and volcanic eruptions occur when the stretching exceeds the strength of the near-surface rocks, which then fracture along steeply dipping cracks parallel to the rift.
What is the Great Rift Valley and why is it important?
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 …
Why Rift Valley has steep sides?
c) Rift valleys have steep sides because they are formed when the earth crust is divided, they are not like those valley which are formed by soil erosion.
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)|