Why It Matters: Crustal Deformation

Correlate structural geology as it pertains to crustal deformation


Rock face with chevron patterns of sedimentary layers.

Figure 1. Chevron folds with flat-lying axial planes, Millook Haven, North Cornwall, UK

Understanding crustal deformation helps explain the forces necessary to bend and fold rocks like those shown above which help create mountains. This section will discuss the types of forces needed to accomplish such a powerful feat. Have you ever wondered how strong those forces would have to be? The answer to that is beyond our comprehension.

Along with these forces, we will investigate various types of folds as well as different types of faults. If you recall from the plate tectonics sections, earthquakes occur along active fault lines. This section helps us better understand how faults work.

Learning Outcomes

  • Compare and contrast stress versus strain in the Earth’s crust.
  • Identify geologic structures created by deformation.


Did you have an idea for improving this content? We’d love your input.

Improve this pageLearn More