Question

Distinguish between the following:

Acid Igneous Rocks and Basic Igneous Rocks.

Answer 1

Acid Igneous Rocks	Basic Igneous Rocks
These are lighter rocks with silica content 65 to 85 percent with density less than 2 g/cm.3	These are denser rocks with silica content 40 to 60 percent with average density between 2.8 g/Cm3 and 3.0 g/cm.3
Example: Granite.	Example: Basalt.