Theory of Plate Tectonics
- The tectonic theory of crustal evolution is a scientific theory that revolutionised people’s understanding and study of geological processes and the Earth
- It helps to explain geological phenomena such as:
- the occurrence of hazards such as earthquakes and volcanic eruptions
- the formation of mountain ranges
- the movement of continents
- the distribution of some mineral resources such as diamonds
Continental Drift Theory
Overview of Continental Drift Theory
Exam Tip
When you talk about continental drift theory, it is important to remember that this was the very early stages of the development of modern Plate tectonic theory. Wegener’s theory stated that the continents had moved but was unable to suggest how or why, and his ideas did not link to the occurrence of tectonic hazards. It was only decades later that scientists were able to build on his theory to explain how and why tectonic plates move and how their interaction at plate margins creates distinctive processes and landforms.