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.
What is rift valley with example?
Continental rifts are potential places where new oceans are expected to form. Examples of rift valleys: 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.
What is the rift valley known for?
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.
What is rift valley class6?
A rift valley is a lowland region that forms where Earth’s tectonic plates move apart. When two faults occur simultaneously, the portion of a land between them may get elevated or get depressed. The depressed piece of land between two or more parallel faults is forms a rift valley.
What does rift mean in science?
rift 1. / (rɪft) / noun. a gap or space made by cleaving or splitting; fissure. geology a long narrow zone of faulting resulting from tensional stress in the earth’s crust.
What is a rift valley class 9?
Explanation: A rift valley is a linear-shaped lowland between several highlands or mountain ranges which is created by the action of a geologic rift or fault.
Which force causes rift valley?
Rifts are formed as a result of the pulling apart of the lithosphere due to extensional tectonics. The linear depression may subsequently be further deepened by the forces of erosion. More generally the valley is likely to be filled with sedimentary deposits derived from the rift flanks and the surrounding areas.
Where is the rift valley?
In Kenya, Uganda, and the fringes of South Sudan, the Great Rift runs along two separate branches that are joined to each other only at their southern end, in Southern Tanzania along its border with Zambia. The two branches are called the Western Rift Valley and the Eastern Rift Valley.
What is Rift Valley Fever?
Rift Valley fever (RVF) is an acute viral hemorrhagic fever that is most commonly seen in domesticated animals (such as cattle, buffalo, sheep, goats, and camels) and can also cause illness in people. The disease is caused by RVF virus (RVFV), a member of the genus Phlebovirus in the order Bunyavirales.
How old is the Great Rift valley?
Site of some of the oldest hominid fossils, The Great Rift Valley in East Africa refers to a massive land depression, formed approximately twenty million years ago when two parallel fault lines pulled apart.
Which is the rift valley in India?
The correct answer is The Narmada. Narmada is the largest west flowing river of peninsular India. Narmada flows westwards through a rift valley between the Vindhyan Range on the north and the Satpura Range on the south.
Is rift valley a divergent?
Divergent boundaries within continents initially produce rifts, which eventually become rift valleys. Most active divergent plate boundaries occur between oceanic plates and exist as mid-oceanic ridges.
What is rift valley Upsc?
Rift Valleys
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 and are created by the process of seafloor spreading.
How is a rift valley formed Class 9?
They are formed due to the collision of tectonic plates. They are formed due to the sinking of land between two river basins. They are formed due to the sinking of land between two normal faults or deep slopes.
How are rift valleys formed Class 7?
Answer: A rift valley is formed on a divergent plate boundary when a block of land between two almost parallel faults sinks down. For example, the Narmada Valley in India, lying between the Satpura and Vindhya ranges, is a rift valley.
What causes a rift?
Rifting can be caused when hot material from a mantle plume reaches the base of a continental plate and causes the overlying lithosphere to heat up. In addition to this the uwards movement of the plume against the base of the plate results in extensional forces, which can cause rifting.
What is rifting in geography?
In geology, a rift is a linear zone where the lithosphere is being pulled apart and is an example of extensional tectonics. Typical rift features are a central linear downfaulted depression, called a graben, or more commonly a half-graben with normal faulting and rift-flank uplifts mainly on one side.
What is a rift in a relationship?
A rift between people or countries is a serious quarrel or disagreement that stops them from having a good relationship.
