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Extrusive igneous rock is formed from the solidification of lava.Intrusive igneous rock is formed from the solidification of magma.
It is called an igneous rock.Igneous rock is one of the three main rock types, the others being sedimentary and metamorphic rock. Igneous rock is formed through the cooling and solidification of magma or lava. Igneous rock may form with or without crystallization, either below the surface as intrusive (plutonic) rocks or on the surface as extrusive (volcanic) rocks.
Slush is a word given to describe half melting water ice where crystals of ice are present together with a little liquid water. If one had a magma made of crystals in present together with liquid rock - this could be described as a "slushy" mix BUT please note a normal Magma will be entirely liquid until it moves to environment where it begins to cool (at which point crystals will start to form in it) - magma is ONLY a slushy mix for a short time - just before it solidifies.
Igneous rock (derived from the Latin word ignis meaning fire) is one of the three main rock types, the others being sedimentary and metamorphic rock. Igneous rock is formed through the cooling and solidification of magma or lava. Igneous rock may form with or without crystallization, either below the surface as intrusive(plutonic) rocks or on the surface as extrusive (volcanic) rocks. This magma can be derived from partial melts of pre-existing rocks in either a planet's mantle orcrust. Typically, the melting is caused by one or more of three processes: an increase in temperature, a decrease in pressure, or a change in composition. Over 700 types of igneous rocks have been described, most of them having formed beneath the surface of Earth's crust.
Convection cells of magma, circular currents of heating and cooling which increases (cooling) or decreases (heating) density. The Circular motion pulls the plates (away )apart at one point which results with a counter motion of the plates "pushing" into other plates which pushes into another plate so on and so forth.
minerals form
minerals form
crystallization above ground and crystallization below ground
Extrusive igneous rock is formed from the solidification of lava.Intrusive igneous rock is formed from the solidification of magma.
granitite magma is a course -grained igneous rock.
Magma moves under the lithosphere because the aesthenosphere (and magma) are ductile - they act as a fluid, although a very viscous one, and they do flow. The viscosity of a magma depends on its mineral composition. Magma will move in convection currents throughout the aesthenosphere due to the heating and cooling of it as it travels throughout the aesthenosphere.
Igneous is one of the three major rock classifications in geology. An igneous rock is a rock formed from the cooling and solidification of magma or lava.
It is called an igneous rock.Igneous rock is one of the three main rock types, the others being sedimentary and metamorphic rock. Igneous rock is formed through the cooling and solidification of magma or lava. Igneous rock may form with or without crystallization, either below the surface as intrusive (plutonic) rocks or on the surface as extrusive (volcanic) rocks.
there are many parts of a volcano. There is the magma chamber: where all of the magma is held. There is the pipe: where the magma comes up and through the volcano. There is the dike, where where a slab forms when magma forces itself across rock layers. There is the crater, where a bowl shaped area forms around a volcanoes central vent. There is the vent: where magms comes out.
Both are formed from the crystallization of minerals caused by the cooling of magma.Intrusive igneous rocks cooled below the surface of the planet, however, and generally display larger crystals due to the increased amount of time spent at mineral crystallization temperatures from the insulating effect of surrounding material.Examples: granite, gabbro, diorite, peridotite.Extrusive rocks are formed from magma at or above the surface of the planet, and generally display smaller mineral crystals, or no crystals at all, because of the rapid cooling environment in which they form. Chemically, an intrusive and extrusive rock could be identical, the only difference being the size of the mineral crystals they contain.Examples: obsidian, rhyolite, pumice, scoria, basalt.
The theory of plate tectonics.
All Igneous rocks are crystalline, but also note that Metamorphic rocks are also often crystalline, at least to a certain extent. Both of these categories always contain some crystals.