Crustal mechanics control the geometry of mountain belts. Insights from numerical modelling

- We use thermo-mechanical models to investigate continent-continent collision zones.
- Collision may result in double vergent orogens or continental subduction.
- Crustal mechanics determine this transition.
- Strong rheological coupling of upper and lower crust forms double vergent orogens.
- Low rheological coupling of upper and lower crust results in continental subduction.