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The mantle rock is not hot enough to melt while under the pressure that exists at the depth it is at.
When the crust cracks like it does at the spreading centers at mid-ocean ridges, the pressure is released just enough to allow melting of the top layer of the mantle, producing very dense basaltic lava.
What else can I help you with?
Why isn't earths entire mantle liquid?
The mantle isn't 100% liquid because magma solidifies near the crust and becomes plastic in texture and not fluid but eventually cools down to form the lithosphere. Lower parts of the mantle are not liquid because the high pressure keeps rock from melting.
Is the earth a solid or a liquid?
Both. The upper mantle is solid and the lower mantle is liquid.
When was The World Keeps Turning created?
The World Keeps Turning was created in 1992-07.
Is the lower mantle solid or liquid?
The lower part of the Mantle is liquid.
What is the mantle core like?
The core is solid metal surrounded by liquid metal, the mantle is liquid rock.
Is the mantle solid liquid or other?
Liquid I Think
Is the earths mantle made of liquid?
No. The Earth's mantle is a ductile solid.
What keeps the metals at the center of the earth moving?
The mantle
What is the mantle layer of the earth?
liquid
Is the lower mantle of the Earth a solid or liquid?
the lower mantle of earth is a solid
What are the Asthenospheric mantle and the Inner Mantle are made up of?
The Asthenospheric mantle and the Inner mantle are made up of solid rock and liquid rock.
What is the liquid rock in the mantle called?
The liquid rock in the mantle is called magma. As it moves closer to the surface, it is then called lava when it erupts from a volcano.
