Why are igneous rocks called primary rocks?
1 Answer
Nov 5, 2015
As igneous rocks are formed from magma and begin the rock cycle, they are called primary rocks.
Explanation:
Igneous rocks are created from the cooling of molten magma/lava. All other rocks are derived from them, which is why you will also find them referred to as parent rocks on occasion.
This image is a pretty good illustration of the rock cycle:
As you can see, it starts with magma
