There are several different types of volcanoes: steep stratovolcanoes, wide shield volcanoes, and mounded lava domes. The shape of a volcano actually depends on the types of lava that itâs made up of.And so, there are several different types of lava.'a lava. The type of lava coming out of a volcano depends on its mineral content. Some lava is very thin, and can flow out of a volcano in great rivers that go for dozens of kilometers. Other lava is very thick, and only flows for a short distance before cooling and hardening.
Report Abuse. Igneous rocks are crystalline solids which form directly from the cooling of magma.The chemistry of the parent rock largely determines the composition of the resulting metamorphic rock. So the major difference is that Igneous rocks are made from magna and metamorphic rock is made from any other rock.hen magma appears above the earth, it is called lava. Igneous rocks are formed as the lava cools above ground. Metamorphic rocks are rocks that have morphed into another kind of rock.
Rocks are classified by the processes under which they were formed. The differences in formation account for variations in the appearance of the rocks and, with some practice, you can learn to recognize the different types by sight. Metamorphic Rocks are rocks that have changed form due to heat and pressure.Metamorphic comes from the Greek words meta and morph. Meta means change and morph means form.etamorphic rocks were once sedimentary, igneous or even other metamorphic rocks that have been changed by heat and pressure.