How Do Fine Grained Igneous Rocks Form - The magma can be derived from partial melts. Web these rocks form when magma erupts onto the earth’s surface, where it is called lava, and cools rapidly. Web igneous rocks are formed through the cooling and solidification of magma or lava.
The magma can be derived from partial melts. Web igneous rocks are formed through the cooling and solidification of magma or lava. Web these rocks form when magma erupts onto the earth’s surface, where it is called lava, and cools rapidly.