Summary:
- When continents collide, big mountains grow.
- The formation of Pangaea created long large mountain ranges.
- The mountains that formed then look a lot like the Himalayas do today.
- Orogenies take place over tens or hundreds of millions of years.
- Continents smash into each other.
- Microcontinents and island arcs smash into continents.
- All of these events cause mountains to rise.
- The Appalachians were once higher than the Himalaysas are now.
- The Taconic Orogeny is an example of a collision between a continent and a volcanic island arc.