\b[The <fault dips> are approximately $90^\circ$.] The mapped senses of <fault slip> are predominantly <strike-slip faulting>. In an <Andersonian faulting regime>, the intermediate <principal stress> $\sigma_2$ is vertical and the maximum and minimum <principal stresses> $\sigma_1,\sigma_3$ are horizontal, so the preferred <fault planes> are vertical. Local bends can introduce <oblique-slip faulting> without changing this first-order interpretation.

Solution

Past exam of the year 2 of the earth sciences (geology) course of the University of Oxford / 2023 / Paper 1 / 1 / a / Solution

 Solution (source code)