Question

Why are igneous rocks considered as primary rocks?

Answer 1

Instructions:

• Formation of igneous rocks. (1.5 marks)
• Link with formation of other rocks (1.5 marks)

Solution:

• Igneous rocks are formed directly from the molten lava, so it does not depend on any other rock for its formation.
• And also, the igneous rock acts as a source rock for the formation of other two, that is, sedimentary and metamorphic, either directly or indirectly.
• Because of this very reason the igneous rocks are also called primary rocks or parent rocks.