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.
Igneous Rocks. Igneous rocks are formed from lava or magma. Magma is molten rock that is underground and lava is molten rock that erupts out on the surface. The two main types of igneous rocks are plutonic rocks and volcanic rocks. Plutonic rocks are formed when magma cools and solidifies underground. Volcanic rocks are formed from lava that flows on the surface of the Earth and other planets and then cools and solidifies. The texture of an igneous rock depends on the size of the crystals in the rock. This tells us if the rock is plutonic or volcanic. When magma cools underground, it cools very slowly and when lava cools above ground, it cools quickly. When magma and lava cool, mineral crystals start to form in the molten rock.