 These surveys show that Easter plate is uniquely shallow, bordered by spreading centers and transform boundaries, with a triple junction located at the southern and northern tip.Along the eastern border, there are several spreading centers south of 27° S and 3 northward propagating rifts to the north of 27° S. The axis further north is a graben reaching a depth of approximately 6000 m. Northward propagation of the eastern rifts is continuous at a speed of /yr.The spreading ridge between 26° S and 27° S has a spreading rate of /yr, but is asymmetrical on Nazca Plate side.