Antarctic Plate
The Pacific-Antarctic Plate Boundary is another active divergent boundary known as the Pacific-Antarctic Ridge(PAR). The Pacific-Antarctic Ridge is the southwest region of the East Pacific Rise, the mid-oceanic ridge located at the base of the Pacific Ocean. The PAR is divergent boundary driven by the interaction of a MOR and deep mantle plumes located in the eastern portion of the East Pacific Rise. These deep mantle plumes however, have given the Pacific Plate a left lateral force vector creating a transform boundary in the western Pacific-Antarctic Plate Boundary in the vicinity of the Macquarie Triple Junction, forming the Emerald Fracture Zone.