Located about east of the East Pacific Rise, Easter Island lies within the Nazca Plate, bordering the Easter Microplate. The Nazca-Pacific relative plate movement due to the seafloor spreading, amounts to about per year. This movement over the Easter hotspot has resulted in the Easter Seamount Chain, which merges into the Nazca Ridge further to the east. Easter Island and Isla Salas y Gómez are surface representations of that chain. The chain has progressively younger ages to the west. The current hotspot location is speculated to be west of Easter Island, amidst the Ahu, Umu and Tupa submarine volcanic fields and the Pukao and Moai seamounts.