Since the closure of the North Atlantic – Labrador Sea rift , Greenland has moved roughly in conjunction with North America ; thus , there are questions as to whether the Greenland Plate should be still considered a separate plate at all . The area between Greenland and Baffin Island is , however , seismically very active , being the location of the epicenter of many earthquakes including a 7.3-magnitude earthquake in 1933 . , scientists have been unable to correlate the seismicity with particular geological structures or geophysical anomalies . It has been suggested that seismicity in the region is related to the stresses associated with post-glacial rebound
7.3-magnitude earthquake in 1933
1933 Baffin Bay earthquake
Greenland Plate