👉 A traprock is a type of rock that is formed from the cooling process of magma. The cooling process occurs when hot, molten rocks are exposed to low temperature conditions and become solid due to the difference in density between the molten rock and the surrounding air. As the rock cools, it solidifies into a rock with a different chemical composition. This process can cause the rock to form into a complex structure that is similar to a marble or granite, but without the characteristic smooth surface.
