George Plafker is an American geologist and seismologist who has made significant contributions to both fields , with research focused on subduction , tsunami , and the geology of Alaska . Following prolonged study of the region of the 1964 Alaska earthquake , Plafker correctly concluded that the largest earthquakes are the result of fault slip at convergent boundaries . This was at a time when the theory of plate tectonics was still not completely accepted by the scientific community . Additional studies were done in Chile in the late 1960s regarding the series of earthquakes there
1964 Alaska earthquake
1964 Alaska earthquake
George Plafker