answersLogoWhite

0

Mantle rock, usually fed by subducting crusts at destructive plate boundaries, melt under the heat, creating magma (or igneous melt). This magma is usually less dense than the surrounding (country) rock and so rises to or near the surface, forming igneous rocks in two ways:

1) The rock does not reach the surface, but cools and crystallises inside the Earth, creating INTRUSIVE igneous rocks. These usually have large crystals as they cool more slowly due to the hot surrounding temperatures.

2) The rock reaches the surface via volcanic or fissure eruptions as lava, and cools and crystallises very quickly on the earth's surface forming EXTRUSIVE igneous rocks. These have fine crystals due to the quick cooling time and colder surrounding temperatures.

User Avatar

Wiki User

11y ago

What else can I help you with?

Related Questions

What is the melted mineral material in the mantle called?

The melted mineral material in the mantle is called magma.


Melted material that rises from the mantle is called?

Melted material that rises from the mantle is called magma. Once magma reaches the Earth's surface, it is then referred to as lava.


When rock in earth's mantle melt what does it become?

Melted rock in the Earth's mantle is called magma.


Is solid rock located deep in the mantle called magma?

No, solid rock located deep in the mantle is not called magma. Magma is molten rock that is found beneath the Earth's surface in the mantle and crust. Solid rock in the mantle is known as the lithosphere.


What hot melted rock formed deep within earth by pressure and heat?

The hot melted rock formed deep within the Earth by pressure and heat is called magma. This molten rock originates from the mantle and can rise towards the surface, where it may lead to volcanic activity. When magma erupts through a volcano, it is referred to as lava. Over time, as magma cools and solidifies, it forms igneous rocks.


What is the melted material beneath the Earth's surface?

This material is most often referred to as magma.


What is the mantle and crust made up of?

Nearly all of the mantle and crust are made up of rock, and in the case of the mantle, a small percentage of magma (melted rock).


What is the new oceanic crust formed by?

Magma leaking in from the mantle.


What refers to rocks that are produced when melted rock or magma from inside Earths cools or hardens on or below Earths surface?

i think the answer your looking for is igneous rock.....that is the type of rock you get after megma cools.....


Is diamond more durable after being melted and cooled?

Temperature changes does not affect diamonds, since they are good conductors of heat, and that they were naturally formed on the Earth's mantle - which consists of magma and other hot substance.


What is melted rock in earth is called?

It is located in the mantle and is called Magma while in the ground and Lava when above ground.


What is the melted rock in the earth called?

It is located in the mantle and is called Magma while in the ground and Lava when above ground.