Magma
It is generally igneous, but can be found in metamorphic rocks.
The Igneous rock formed when magma cools are; 1. Extrusive (Volcanic) Igneous Rock; which are igneous rocks formed when magma cools outside the earths crust. The texture of of extrusive igneous rock is fine grained. 2. Intrusive (Plutonic) Igneous Rock; these are igneous rocks formed by gradual cooling of magma within the earths crust. The texture is coarse grained.
Extrusive igneous rock is formed by the eruption of volcanoes that produce lava which later cools. Intrusive igneous rocks are formed by the cooling and solidification of magma within the Earth's crust.
Igneous rocks [fire rocks] are formed either underground or above ground. Underground they are formed when the melted rock [called magma] deep within the earth becomes trapped in small pockets, and as these pockets of magma cool slowly underground the magma becomes igneous rocks. Igneous rocks are also formed when volcanoes erupt causing the magma to rise above the earth's surface. When magma appears above the earth, it is called lava. Igneous rocks are formed as the lava cools above ground. Examples of igneous rocks are granite, scoria, pumice, obsidian and basalt.
A couple of them are obsidian and pumice.THEY ARE CALLED EXTRUSIVE IGNEOUS ROCKS...........THEY ARE SO CALLED BECAUSE THEY ARE FORMED FROM THE LAVATHAT HAS BEEN COOLED........
The Extrusive igneous rock is formed on the earths surface while the Intrusive igneous rock is formed within or inside the earths crust.
Half Dome is a type of granite rock, which is an igneous rock formed from the cooling and solidification of magma deep within the Earth's crust.
Granite is an igneous rock with a coarse-grained texture, formed from the slow cooling of molten magma deep within the Earth's crust. Pumice is also an igneous rock, but with a frothy texture, formed from the rapid cooling of gas-rich lava. Basalt is another igneous rock, but with a fine-grained texture, formed from the cooling of lava on the Earth's surface, typically in volcanic environments.
The texture of an igneous rock formed from cooling magma deep beneath the earth is typically coarse-grained. This is because the slower cooling process allows larger mineral crystals to form within the rock.
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Igneous rock is formed by magma cooling and becoming solid. Metamorphic rock is the end result of a process called metamorphism (which means "change in form"). Sedimentary rock is formed by sedimentation of material at the Earth's surface and within bodies of water.
It is generally igneous, but can be found in metamorphic rocks.
Igneous rocks are formed from the cooling and solidifying of magma. The resulting rock can be instrusive (magma cooling within the crust) and extrusive (lava cooling on the surface). The most common kind of rocks are Granite (intrusive) and Basalt (extrusive).
The Igneous rock formed when magma cools are; 1. Extrusive (Volcanic) Igneous Rock; which are igneous rocks formed when magma cools outside the earths crust. The texture of of extrusive igneous rock is fine grained. 2. Intrusive (Plutonic) Igneous Rock; these are igneous rocks formed by gradual cooling of magma within the earths crust. The texture is coarse grained.
Granite belongs to the Igneous rock group, specifically within the category of intrusive igneous rocks. This means that granite is formed from the cooling and solidification of magma below the Earth's surface.
Granite: Formed from the cooling and solidification of magma deep within the Earth's crust, granite is a common igneous rock used in construction and monuments. Basalt: Basalt is a dark, fine-grained igneous rock that forms from the rapid cooling of lava at the Earth's surface. It is commonly found in oceanic crust and volcanic areas. Obsidian: Obsidian is a natural glass formed from the rapid cooling of lava. It is black in color and has been used historically for tools and weapons by various civilizations.
Extrusive igneous rock is formed by the eruption of volcanoes that produce lava which later cools. Intrusive igneous rocks are formed by the cooling and solidification of magma within the Earth's crust.