6. Geodynamics and Global

Crustal Deformation — Quiz

Test your understanding of crustal deformation with 5 practice questions.

Practice Questions

Question 1

Which of the following rheological models best describes the behavior of the lithosphere over geological timescales, allowing for both elastic and viscous deformation?

Question 2

A geological structure characterized by an arch-like fold with older rocks in the core is known as a(n):

Question 3

In a region experiencing active crustal extension, which type of fault system is most likely to dominate, and what is the expected orientation of the principal stresses?

Question 4

If a GPS station measures a horizontal velocity of $10 \text{ mm/year}$ to the east and another station $100 \text{ km}$ directly east measures a velocity of $12 \text{ mm/year}$ to the east, what is the approximate extensional strain rate between the two stations?

Question 5

The transition from brittle to ductile deformation in the Earth's crust is primarily controlled by the interplay of which two physical parameters?