Relative to North America, the Yakutat Block moves at a rate of about 45 mm/yr to the north northwest, along the Fairweather fault. There is about 20 mm/yr of contraction between the Yakutat block and the Pacific plate, which is probably accommodated on an offshore structure. South of Yakutat Bay, the boundary between the Yakutat block and the North American plate is once again along the Fairweather Fault. North of Yakutat Bay, between Yakutat Bay and the Copper River/Wrangell Mountains region, about 40 mm/yr of contraction is taken up by compression, accommodated by faults within the continental crust. The convergence rate is among the highest in the world within continental crust, surpassing even that which is occurring between the Indo-Australian Plate and the Eurasian Plate which is lifting the Himalayas.