- Created by: portialeoniee
- Created on: 11-02-20 15:32
Destructive plate boundary - where crust is destroyed as one plate moves under another.
Continental - Oceanic: Denser oceanic plate gets forced under lighter continental = subduction. Friction causes major earthquakes. Forms trenches; E.g. Peru-Chile trench and fold mountains; E.g. Andes.
Continental - Continental: continents collide, no subduction. Create fold mountains; E.g Himalayas
Oceanic - Oceanic: Occurs offshore. Crust subducted may be denser or moving faster. Forms island arc - line of volcanic islands which can become land masses; E.g. Japan (Pacific under Eurasian). Also forms ocean trench; E.g. Marianas trench.
Constructive plate boundary: where plates move apart in oceanic areas, the space is then filled with basaltic lava. Forms mid-ocean ridges in oceanic areas, If occur on continental crust a rift valley will be…