Because for the last 30 years scientistshave confirmed the existence of mantle plumes.
Visual evidence.
Confirmation of the existence of mantle plumes can be supported by evidence such as hotspots causing volcanic activity not associated with plate boundaries, geochemical signatures in volcanic rocks consistent with deep mantle sources, and seismic tomography revealing vertical conduits of hot material rising from deep within the mantle.
Plumes of molten rock originating deep within the mantle are known as mantle plumes. These plumes are believed to be responsible for hotspots and volcanic activity at the Earth's surface.
Melted rock in the mantle will rise when it becomes less dense than the surrounding solid rock and forms buoyant plumes. This can be triggered by heat sources such as mantle plumes or subduction zones.
Mantle plumes result in the formation of hot spots.
Examples of islands formed by mantle plumes include Hawaii, Iceland, and the Galapagos Islands. These islands were created by the upwelling of hot material from deep within the Earth, which led to the formation of volcanic chains.
Confirmation of the existence of mantle plumes can be supported by evidence such as hotspots causing volcanic activity not associated with plate boundaries, geochemical signatures in volcanic rocks consistent with deep mantle sources, and seismic tomography revealing vertical conduits of hot material rising from deep within the mantle.
Plumes of molten rock originating deep within the mantle are known as mantle plumes. These plumes are believed to be responsible for hotspots and volcanic activity at the Earth's surface.
Mantle plumes. These are hot upwellings of magma from the Earth's mantle that can cause volcanic activity on the surface, such as hotspot volcanoes like those in Hawaii.
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Mantle plumes
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Columns of hot rock rising through Earth's mantle are called mantle plumes. These plumes originate near the core-mantle boundary and can cause volcanic activity on the Earth's surface when they reach the crust, creating features like hotspot volcanoes.
Melted rock in the mantle will rise when it becomes less dense than the surrounding solid rock and forms buoyant plumes. This can be triggered by heat sources such as mantle plumes or subduction zones.
It is on the edge not very close by the mantle plumes
In areas of tectonic activity and above mantle plumes.
A mantle plume is a column of hot rock rising from deep within the Earth's mantle to the surface. These plumes can cause volcanic activity and create features like hotspots and mid-ocean ridges. Mantle plumes are thought to be responsible for some of the most significant geological phenomena on Earth.
Mantle plumes result in the formation of hot spots.