rift zone definition
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Rift zone Not to be confused with rift or rift valley. East Rift Zone on Kilauea. A rift zone is a feature of some volcanoes, especially shield volcanoes, in which a linear series of fissures in the volcanic edifice allows lava to be erupted from the volcano's flank instead of from its summit.
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The Great Rift Valley A rift valley is a lowland region that forms where Earth’s tectonic plates move apart, or rift. A rift valley is a lowland region that forms where Earth’s tectonic plates move apart, or rift.
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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.
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- A habitable zone (HZ) in astronomy is a region of space where conditions are best for life to form as on Earth. Planets in these areas are the most likely to have extraterrestrial life. The habitable zone may also be called the life zone, comfort zone, green belt or Goldilocks zone.
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rift valley Definition of rift valley. : an elongated valley formed by the depression of a block of the earth's crust between two faults or groups of faults of approximately parallel orientation.
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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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What is the difference between a rift valley and a mid ocean ridge and what kinds of boundaries do they form at? Great rift valley is a valley, and its formed when 2 continental plates spread apart. Mid-Oceanic ridge are formed when 2 oceanic plates spread apart or diverge forming new … ocean floor. 3 people found this useful.
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East African Rift System Written By: 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.
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African Rift Valley: Formation & Overview Rift valleys differ from river or glacial valleys in that they are created by tectonic activity rather than surface climatic forces.They are often narrow with flat floors and steep walls, and most of them occur in oceanic crust. 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.
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Africa This is a slice of a larger topographical map that highlights the Great Rift Valley, a dramatic depression on the earth's surface, approximately 4,000 miles (6,400 km) in length, extends from the Red Sea area near Jordan in the Middle East,, south to the African country of Mozambique.
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Contents Definition. The Inter Tropical Convergence Zone, or ITCZ, is a belt of low pressure which circles the Earth generally near the equator where the trade winds of the Northern and Southern Hemispheres come together. It is characterised by convective activity which generates often vigorous thunderstorms over large areas.
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6th grade science - plate tectonics A boundary along which two tectonic plates move apart, characterized by either a mid-ocean ridge or a continental rift valley. Most divergent boundaries are found in the ocean.
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Rift Valley What is a Rift Valley Landform? A rift valley is a valley or depression in the land bordered by fault zones and separating tectonic plates. The depressed areas of a rift valley are formed by one or more grabens. A graben is a fallen portion of land with faults on 2 or more sides. When outer landmasses move away from the fault zones, the land in the middle can slowly drop during a period of thousands of years.
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- A rift valley is formed when pieces of the Ea…rth's crust move apart from each other. V-shaped valleys are formed by the erosive effects of running water and U-shaped valleys are formed by the erosive effects of flowing glacial ice. Rift valleys occur as lithospheric plates are diverging, creating a gap between land masses which is being infilled with rising decompression melted basaltic magma and lava.
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Lake Baikal The bottom of the lake is 1,186.5 m (3,893 ft) below sea level, but below this lies some 7 km (4.3 mi) of sediment, placing the rift floor some 8–11 km (5.0–6.8 mi) below the surface: the deepest continental rift on Earth.
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Red Sea Rift It extends from the Dead Sea Transform fault system, and ends at an intersection with the Aden Ridge and the East African Rift, forming the Afar Triple Junction in the Afar Depression of the Horn of Africa. The Red Sea Rift was formed by the divergence between the African Plate and the Arabian Plate.The rift transitioned from a continental rift to an oceanic rift. Magnetic anomalies suggest that the spreading rate on either side of the Red Sea is about 1 cm/yr.t extends from the Dead Sea Transform fault system, and ends at an intersection with the Aden Ridge and the East African Rift, forming the Afar Triple Junction in the Afar Depression of the Horn of Africa. The Red Sea Rift was formed by the divergence between the African Plate and the Arabian Plate.
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- The Great Rift and the Evolution of the. Craters of the Moon Lava Field, Idaho. Mel A. Kuntzl, Duane E. Champion2, Elliott C. Spiker3, Richard H. Lefebvrelsd, and Lisa A. McBroomes. ABSTRACT. The Snake River Plain of southern Idaho is a. region of late Cenozoic and Quaternary basalt vol-. canism and many volcanic rift zones. The most spectacular volcanic rift zone on the plain is the Great Rift, an 85-kilometer-long and 2-to 8-kilometer-wide belt of cinder cones, shield volcanoes, eruptive fis- sures, and open cracks. The Holocene and latest Pleistocene Craters of the Moon lava field is alined along a 45-kilometer segment of the northern part of the Great Rift.
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-  Where plates collide, one plate pushes under the other one in subduction. Volcanic action is likely as the subducted plate is forced below and melted below the crust. If plates are divergent, or separating and pulling apart, the rift is essentially a crack in the crust.
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- A rift valley is formed when pieces of the Ea … rth's crust move apart from each other. V-shaped valleys are formed by the erosive effects of running water and U-shaped valleys are formed by the erosive effects of flowing glacial ice.
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What is absinthe? Today, it is thought that there are about fifty brands of the absinthe drink available, produced mainly in France, Switzerland, Spain and the Czech Republic. Absinthe is usually green, although there are a few Swiss varieties that are clear.
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Great Rift (astronomy) In astronomy, the Great Rift (sometimes called the Dark Rift, or, less commonly, Dark River) is a series of overlapping, non-luminous, molecular dust clouds that are located between the Solar System and the Sagittarius Arm of the Milky Way Galaxy at a distance of about 100 parsecs or about 300 light years (2×10 15 miles or 3×10 15 kilometers) from Earth.
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Red Sea Rift The Red Sea Rift is a spreading center between two tectonic plates, the African Plate and the Arabian Plate.t extends from the Dead Sea Transform fault system, and ends at an intersection with the Aden Ridge and the East African Rift, forming the Afar Triple Junction in the Afar Depression of the Horn of Africa. The Red Sea Rift was formed by the divergence between the African Plate and the Arabian Plate.
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New Madrid Seismic Zone The New Madrid fault system, or the New Madrid seismic zone, is a series of faults beneath the continental crust in a weak spot known as the Reelfoot Rift. It cannot be seen on the surface.
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Circumstellar habitable zone In astronomy and astrobiology, the circumstellar habitable zone (CHZ), or simply the habitable zone, is the region around a star within which planetary-mass objects with sufficient atmospheric pressure can support liquid water at their surfaces.
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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.
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East African Rift System The Great Rift Valley, a long fissure in Earth’s crust, begins beyond the northern frontier of Israel and forms a series of valleys running generally south, the length of the country, to the Gulf of Aqaba.