How Does Extrusive Igneous Rock Form. Web extrusive rocks are formed on the surface of the earth from lava, which is magma that has emerged from underground. Intrusive rocks are formed from magma that cools and solidifies within the crust of the.
The lava cools quickly as it pours out onto the surface (figure below). Web extrusive rock, any rock derived from magma (molten silicate material) that was poured out or ejected at earth’s surface. Web extrusive rocks are formed on the surface of the earth from lava, which is magma that has emerged from underground. Intrusive rocks are formed from magma that cools and solidifies within the crust of the. Extrusive igneous rocks cool much more rapidly. Web extrusive igneous rocks are erupted onto the surface or into the atmosphere. Extrusive igneous rocks are also termed volcanic rocks—named for vulcan, the roman god of fire. Extrusive, or volcanic, igneous rock is produced when magma exits and cools above (or very near) the earth's surface. Web extrusive igneous rocks. By contrast, intrusive rocks are formed from magma that was forced into older rocks at depth within.
Intrusive rocks are formed from magma that cools and solidifies within the crust of the. Intrusive rocks are formed from magma that cools and solidifies within the crust of the. Extrusive, or volcanic, igneous rock is produced when magma exits and cools above (or very near) the earth's surface. Extrusive igneous rocks cool much more rapidly. Web extrusive rocks are formed on the surface of the earth from lava, which is magma that has emerged from underground. By contrast, intrusive rocks are formed from magma that was forced into older rocks at depth within. Web intrusive rocks have a coarse grained texture. Extrusive igneous rocks form above the surface. Extrusive igneous rocks are also termed volcanic rocks—named for vulcan, the roman god of fire. Web extrusive igneous rocks. Web extrusive rock, any rock derived from magma (molten silicate material) that was poured out or ejected at earth’s surface.