What is mid-Indian Ocean ridge?
Mid-Indian Ridge, submarine ridge of the Indian Ocean that is a direct continuance of the Mid-Atlantic Ridge; both are segments of the worldwide midoceanic ridge system. The ridge is associated with a belt of earthquake epicentres and, hence, is seismically active.
What type of boundary is the Mid-Indian Ridge?
Mid-ocean ridges occur along divergent plate boundaries, where new ocean floor is created as the Earth’s tectonic plates spread apart. As the plates separate, molten rock rises to the seafloor, producing enormous volcanic eruptions of basalt.
What plates make up the Mid-Indian Ridge?
The North American and Eurasian Plates are moving away from each other along the line of the Mid Atlantic Ridge. The Ridge extends into the South Atlantic Ocean between the South American and African Plates.
Where is the Indian Ridge?
very slow oceanic ridge, the Southwest Indian Ridge, bisects the ocean between Africa and Antarctica. It joins the Mid-Indian and Southeast Indian ridges east of Madagascar.
Which is the best description of a mid-ocean ridge?
A mid-ocean ridge or mid-oceanic ridge is an underwater mountain range, formed by plate tectonics. This uplifting of the ocean floor occurs when convection currents rise in the mantle beneath the oceanic crust and create magma where two tectonic plates meet at a divergent boundary.
What is the length of the Mid Indian Ridge?
It is approximately 2,000 km long and 800 to 900 km wide. It rises 1,000 to 1,500 m above the ocean floor, and the sea above the ridge is less than 3,000 m deep. The Mid-Indian Ridge consists of narrow ridges 300 to 500 m above the ocean floor (to a maximum of 1,000 m) and canyons extending from northwest to southeast.
Where is Mid-Atlantic Ridge?
Atlantic Ocean
The Mid-Atlantic Ridge (MAR) is a mostly underwater mountain range in the Atlantic Ocean that runs from 87°N -about 333km south of the North Pole- to subantarctic Bourvet island at 54°S.
Who discovered the Mid-Atlantic Ridge?
Marie Tharp: Discoverer of the Rift Valley of the Mid-Atlantic Ridge and Inventor of Marine Cartography.
What is the role of the mid-ocean ridge?
Mid-ocean ridges are the longest, largest and most voluminous magmatic environment on Earth. Ridges are the site of new lithospheric and crustal production that may be subsequently subducted into the mantle and recycled, or involved in magma-producing dehydration reactions that slowly build up continental crust (Fig.
What is an example of a mid-ocean ridge?
Mid-ocean ridges form where two tectonic plates are pulling apart, also called seafloor spreading. The Mid-Atlantic Ridge, which is spreading one to two inches a year, along with the East Pacific Rise, which is spreading two to six inches a year, are two examples of very long mid-ocean ridges.
Where is mid-ocean ridge?
Mid-Atlantic Ridge, submarine ridge lying along the north-south axis of the Atlantic Ocean; it occupies the central part of the basin between a series of flat abyssal plains that continue to the margins of the continental coasts.
Where is the southeast Indian Ridge in the Indian Ocean?
The Southeast Indian Ridge (SEIR) is a mid-ocean ridge in the southern Indian Ocean. A divergent tectonic plate boundary stretching almost 6,000 km (3,700 mi) between the Rodrigues Triple Junction (25°S 70°E) in the Indian Ocean and the Macquarie Triple Junction (
What kind of plate boundary is the Southwest Indian Ridge?
Southwest Indian Ridge. The Southwest Indian Ridge (SWIR) is a mid-ocean ridge located along the floors of the south-west Indian Ocean and south-east Atlantic Ocean. A divergent tectonic plate boundary separating the African Plate to the north from the Antarctic Plate to the south, the SWIR is characterised by ultra-slow spreading rates…
What is the morphology of the central Indian Ridge?
The Central Indian Ridge ( CIR) is a north-south-trending mid-ocean ridge in the western Indian Ocean . The morphology of the CIR is characteristic of slow to intermediate ridges.
Where is the Mid Atlantic Ridge located in the world?
The Mid-Atlantic Ridge ( MAR) is a mid-ocean ridge, a divergent tectonic plate or constructive plate boundary located along the floor of the Atlantic Ocean, and part of the longest mountain range in the world. In the North Atlantic, it separates the Eurasian and North American plates, and in the South Atlantic,…