Transform boundaries, also known as transform faults, are places where two tectonic plates slide past each other horizontally. Unlike convergent or divergent boundaries, there is no creation or destruction of crust at these locations. Instead, the movement can cause earthquakes due to the friction that builds up as the plates grind against one another.
A well-known example of a transform boundary is the San Andreas Fault in California. This fault marks the boundary between the Pacific Plate and the North American Plate. As these plates move, they can create significant seismic activity, making transform boundaries important areas of study in geology and seismology.