GEOLOGY

Detailed explanation-1: -Most seismic activity occurs at three types of plate boundaries-divergent, convergent, and transform. As the plates move past each other, they sometimes get caught and pressure builds up.

Detailed explanation-2: -The third type of plate boundary is the transform fault, where plates slide past one another without the production or destruction of crust. Because rocks are cut and displaced by movement in opposite direction, rocks facing each other on two sides of the fault are typically of different type and age.

Detailed explanation-3: -Transform boundaries are places where plates slide sideways past each other. At transform boundaries lithosphere is neither created nor destroyed. Many transform boundaries are found on the sea floor, where they connect segments of diverging mid-ocean ridges. California’s San Andreas fault is a transform boundary.

Detailed explanation-4: -There are six classic types of transform faults (Fig. 26.30). While most transform faults offset the mid-ocean ridge system, the best-known transform faults are those on land (e.g., San Andreas, Dead Sea).

Detailed explanation-5: -(iii) Transform boundary : Boundary where plates slide past each other. (iv) Folds: Places where rocks have been compressed into bends by colliding plates.