Which type of stress causes rocks to fold? compression shearing strike-slip tension

Compression is the type of stress that causes rocks to fold. It occurs when rocks are pushed together, usually at convergent plate boundaries, leading to the bending and warping of the Earth's crust. This creates fascinating geological formations such as mountain ranges, where layers of rock can be visibly seen to curve and ripple! Another interesting aspect is that folds can take various shapes, including anticlines (upward-arching) and synclines (downward-arching). Understanding how these folds form not only helps geologists learn about Earth's history but also plays a crucial role in locating natural resources like oil and natural gas, often found in folded rock formations.