What can form core of mountain range?

Answer 1

The core of a mountain range is typically granite even though other items may be topmost. Notable Iron Mountain shows topical abundance of iron even though the core is granite. Pressure on the granite and shifting of plates causes change including creation of mountains.

Answer 2

The core of a mountain range is typically formed by uplifted and deformed rocks, often composed of igneous and metamorphic rocks. These rocks have been pushed up by tectonic forces, such as converging tectonic plates, and eroded over time to create the distinctive peaks and ridges of the mountain range.