Question

why igneous rocks are also called primary rocks

Answer 1

Igneous rocks begin the rock cycle, and are therefore called primary rocks. Two major divisions include volcanic or extrusive rocksthat form when magma is ejected from the Earth's crust, and intrusive rocks, which are created below the surface.

Answer 2

as we all know the igneous rocks are the starting of the Rock cycle so they are also known as primary rocks because without them know the rocks cannot be formed as sedimentary rocks are formed when they are broken up into pieces and where are sedimentary place and Metamorphic are formed when sedimentary and igneous are under extreme heat and pressure