what form of geological activity does the great rift valley represent
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Great Rift Valley, Kenya The Aberdare Range forms a section of the eastern rim of the Great Rift Valley to the north of Nairobi. Mount Satima lies at the northern end of the Aberdares and is their highest point, and Mount Kinangop at the southern end is the second highest.
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East African Rift The rift is a narrow zone that is a developing divergent tectonic plate boundary, in which the African Plate is in the process of splitting into two tectonic plates, called the Somali Plate and the Nubian Plate, at a rate of 6–7 mm annually.he East African Rift (EAR) is an active continental rift zone in East Africa. The EAR began developing around the onset of the Miocene, 22–25 million years ago.
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- 2. Rifting in East Africa began in Oligocene or Miocene time and continues today. The rifts average 50 km in width and associated volcanism produces oceanic basalts together with alkaline volcanics. The East African Rift System may represent a failed arm of a triple junction at the Red Sea-Aden junction.
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- Quick Answer. Rift valleys form when tectonic forces deep underground exert a pulling force on the terrain. In areas where this occurs, the land splits into a steep-walled valley with a flat floor. Rift valleys can be very narrow, especially early in their formation.
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- Map of the Great Rift showing geographic, volcanic, and structural features. 430 Cenozoic Geology of Idaho. Figure 3. Diagram showing the sequential development of the Craters of the Moon lava field from the oldest eruptive period (H) to the. youngest eruptive period (A).
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Rift Valleys Rift Valleys. Introduction. Rift valleys are not caused by erosion but are created by tectonic activity. Grabens are another name for these valleys. Today geologists use the term graben primarily to describe valleys on the continents. The valleys form when continental crust is pulling apart allowing the land to drop down between parallel faults.
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East African Rift The East African Rift (EAR) is an active continental rift zone in East Africa. The EAR began developing around the onset of the Miocene, 22–25 million years ago.In the past, it was considered to be part of a larger Great Rift Valley that extended north to Asia Minor.he East African Rift (EAR) is an active continental rift zone in East Africa. The EAR began developing around the onset of the Miocene, 22–25 million years ago.
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Rift Zones The mid-ocean ridge is an example of a quiet rift volcano. Over much of the mid-ocean ridge magma is upwelled at nearly the same rate as the plates are spreading. Spreading along the mid ocean ridge occurs at a rate of anywhere from one centimeter to 20 centimeters per year (Bonatti and Crane 1984).he continued pressure will eventually create a rift zone, and a new ocean basin is born. These rift zones are characterized by volcanism and are inundated with transverse faults. The record of magnetic anomalies on the Atlantic Ocean floor record the direction of propagation of the rifts.
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Where is the Great Rift Valley? Definition: The Rift Valley, also known as the Great Rift Valley or Eastern Rift Valley, is a geological feature that runs south from Jordan in south west Asia, through East Africa and down to Mozambique in southern Africa.In all the Rift Valley is 6,400 km (4,000 miles) long and is 64 km (35 miles) wide on average.he western branch of the Rift Valley, known as the Western Rift Valley, runs in a great arc through the Great Lakes region, passing along lakes Albert (also known as Lake Albert Nyanza), Edward, Kivu, Tanganyika, Rukwa and to Lake Nyasa in Milawi. Most of these lakes are deep, some with bottoms below sea level.
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rift valley Today, however, the Great Rift Valley exists as a cultural concept, not a scientific one. All of the rift valleys in the “system” are connected, but not part of a single unit. The northern part of the system is the Jordan Rift Valley.
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How long is the Great Rift Valley? When did the Great Rift Valley Form? Around 35 million years ago, the Great Rift Valley was formed by the tectonic breach of the African continental plate from the Arabian plate. Edit
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- The formation of the Rift Valley is in geological terms still continuing. It is, surprisingly, slowly widening and eastern Africa may, in millions of years time, split off to form a new continent. The original violent crack that caused the Rift naturally weakened the earth's crust most where the valley was deepest.
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What kind of boundary is the great rift valley in africa? Best Answer: Divergent, rifts are created when the plates are seperating. Seperating plates are divergent. Converging plates are convergent. The mid-oceanic ridge is kind of ridiculous given where the rift is.
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Slip, Slide, & Collide This rift is a dropped zone where the plates are pulling apart. As the crust widens and thins, valleys form in and around the area, as do volcanoes, which may become increasingly active. Early in the rift formation, streams and rivers flow into the low valleys and long, narrow lakes can be created. Eventually, the widening crust along the boundary may become thin enough that a piece of the continent breaks off, forming a new tectonic plate. At this point, water from the ocean will rush in, forming a new sea or ocean basin in the rift zone.
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- The Great Rift Valley Circuit. The Rift Valley is one of the wonders of the world, stretching from the Middle East, down through Africa, reaching as far as Mozambique. The staggering view, as you approach from Nairobi, Kenya is quite unbelievable.
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- As the plates separate along the boundary, the block between the faults cracks and drops down into the soft, plastic interior (the asthenosphere). The sinking of the block forms a central valley called a rift. Magma (liquid rock) seeps upward to fill the cracks. In this way, new crust is formed along the boundary.Earthquakes occur along the faults, and volcanoes form where the magma reaches the surface. Where a divergent boundary crosses the land, the rift valleys which form are typically 30 to 50 kilometers wide.Examples include th e East Africa rift in Kenya and Ethiopia, and the Rio Grande rift in New Mexico.here a divergent boundary crosses the land, the rift valleys which form are typically 30 to 50 kilometers wide. Examples include th e East Africa rift in Kenya and Ethiopia, and the Rio Grande rift in New Mexico.
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Great Rift Valley The Great Rift Valley is a name given to the continuous geographic trench, approximately 6,000 kilometres (3,700 mi) in length, that runs from Lebanon's Beqaa Valley in Asia to Mozambique in South Eastern Africa.[1] The name continues in some usages, although it is today considered geologically imprecise as it combines features that are today ...
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How Are Rift Valleys Formed? Rift valleys form when tectonic forces deep underground exert a pulling force on the terrain. In areas where this occurs, the land splits into a steep-walled valley with a flat floor. Rift valleys can be very narrow, especially early in their formation.
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Physical Geography of sub-Saharan Africa The East African Rift Valley System is an example of a fissure in the Earth’s crust in which the continent is splitting apart, causing an extensive series of valleys, fingerlike freshwater lakes and volcanoes to form. The map below shows how dominant savanna zones are in sub-Saharan Africa, in particular the Sahel.he East African Rift Valley System is an example of a fissure in the Earth’s crust in which the continent is splitting apart, causing an extensive series of valleys, fingerlike freshwater lakes and volcanoes to form. The map below shows how dominant savanna zones are in sub-Saharan Africa, in particular the Sahel.
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- First named by the British explorer John Walter Gregory, the Great Rift Valley is an enormous geological feature that runs for 5,000km from northern Syria in southwestern Asia … to central Mozambique in East Africa.   Africa's Great Rift Valley is a 6,000 km (3700 mi) crack (fissure) in the earth's crust, stretching from Lebanon to Mozambique.
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The Great Rift From the cold war of the Islands Cluster to the isolation of the Boulderfield, the Great Rift is a place of varied and insidious danger. A miscalculated jump means a slow death in deep space – yet Travellers are willing to take the risk. What awaits the intrepid voyager who finds an undiscovered star system or deep-space object?
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African Rift Valley: Formation & Overview Two major rift valleys occur on the land surface, or in the continental crust: the Baikal Rift Valley in Siberia and the African Rift. Formation. We've established that rift valleys are formed due to a splitting in the earth's crust. How does that happen? The earth's crust is constantly reforming due to the movement of tectonic plates.
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How long is the Great Rift Valley? Around 35 million years ago, the Great Rift Valley was formed by the tectonic breach of the African continental plate from the Arabian plate.
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- The Great Rift Valley in East Africa is an excellent example of  rift caused when the tectonic plates move away from each and the  upper crust falls through the gap. The Gre … at Rift Valley is home to  many of Africa's deepest lakes.
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- Specific geologic features are almost always the result of the interaction between two or more surface and internal processes. A great example is the Grand Canyon, which was formed by the combined effects of tectonic uplift and stream erosion.eologic features are created by geologic processes. They typically result from the interactions between Earth's external processes (erosion and deposition) and internal processes (plate tectonics). They may be quite large (like a mountain range) or small (like the ripples in a streambed).