Igneous rocks are formed by the cooling and hardening of molten material called magma.
Such rock is extrusive igneous rock.
Obsidian
volcano
When molten rock erupts onto Earth's surface, it forms lava flows and igneous rock formations. The type of igneous rock formed depends on the composition of the magma and the speed of cooling. Each eruption can create unique landforms like volcanoes, lava plateaus, and volcanic islands.
A fine grained igneous rock forms from Lava that escapes from the earth crust to the surface and cools and solidifies rapidly.
The rock that forms on earth's surface is extrusive rock or otherwise known as a metamorphic rock.
Igneous rock. Extrusive igneous rock forms at or near the surface, intrusive igneous rock forms below the surface.
igneous rock
Intrusive igneous rock forms from the cooling of magma below the surface. Granite, for example.
Igneous rock that forms below the Earth's surface is intrusive.
This type of igneous rock is called "extrusive igneous rock." It forms when lava cools and solidifies quickly on the Earth's surface, resulting in small mineral grains that are characteristic of rocks like basalt or rhyolite.
Such rock is extrusive igneous rock.
a Obsidion rock
Intrusive igneous rock
Obsidian
volcano
Intrusive igneous rock (plutonic rock).