Extrusive igneous rock is formed from rapidly cooled lava at Earth's surface.
Examples are obsidian and basalt.
Lava.
Igneous rocks that form below the Earth's surface are called intrusive or plutonic rocks. These rocks cool and solidify slowly, allowing large mineral crystals to form. Examples include granite and diorite.
No, not all igneous rock is formed from lava that cooled on Earth's surface. Some igneous rocks are formed from magma that cooled below the surface, and these are called intrusive igneous rocks. These rocks cool more slowly than lava, allowing for larger mineral crystals to form.
Igneous rocks that form above the earth's surface are called extrusive igneous rocks. These rocks cool and solidify quickly due to the rapid cooling environment of the Earth's surface, resulting in fine-grained textures. Examples include basalt and rhyolite.
Igneous rocks that cool above ground are called extrusive or volcanic rocks. Examples include basalt, andesite, and rhyolite. These rocks form when magma erupts onto the Earth's surface and cools rapidly.
Lava.
Igneous rocks that cool under the Earth's surface. They are called intrusive rocks.
A temperature inversion.
They are formed when the erupted magma or lava, cool and sollidifies below or above the earths surface respectively.
Igneous rocks that form under the surface are called intrusive or plutonic rocks. These rocks cool slowly beneath the Earth's surface, allowing for the formation of large mineral crystals. Examples include granite, diorite, and gabbro.
Igneous rocks that form below the Earth's surface are called intrusive or plutonic rocks. These rocks cool and solidify slowly, allowing large mineral crystals to form. Examples include granite and diorite.
When magma reaches the Earth's surface, it is called lava. Lava can flow out of a volcano during an eruption and can cool to form igneous rocks. The characteristics of the lava, such as its temperature and composition, can influence the type of volcanic eruption that occurs.
If it finds its way dowm into the earths crust through rock cycle and then is melted and mixes together to form molten magma, it could re-erupt to the earths surface and form an extrusive igneous rock or cool and solidify within the earths crust as an intrusive igneous rock.
Igneous rocks that form below the Earth's surface are called intrusive igneous rocks. Examples include granite, diorite, and gabbro. These rocks cool and solidify slowly, allowing large crystals to form.
No, not all igneous rock is formed from lava that cooled on Earth's surface. Some igneous rocks are formed from magma that cooled below the surface, and these are called intrusive igneous rocks. These rocks cool more slowly than lava, allowing for larger mineral crystals to form.
Igneous rocks that cool quickly on the Earth's surface are called extrusive or volcanic rocks. Examples include basalt, obsidian, and pumice. These rocks have fine-grained textures due to their rapid cooling.
Igneous rocks that form above the earth's surface are called extrusive igneous rocks. These rocks cool and solidify quickly due to the rapid cooling environment of the Earth's surface, resulting in fine-grained textures. Examples include basalt and rhyolite.