Physiographic Divisions
- The Himalayan Mountains: Geologically young fold mountains (Himadri, Himachal, Shiwaliks).
- The Northern Plains: Formed by alluvial deposits of Indus, Ganga, and Brahmaputra (Bhabar, Terai, Bhangar, Khadar).
- The Peninsular Plateau: Ancient crystalline basaltic tableland (Central Highlands, Deccan Plateau).