The Greenland plate is a tectonic microplate bounded to the west by Nares Strait, a probable transform fault; on the southwest by the Ungava transform underlying Davis Strait; on the southeast by the Mid-Atlantic Ridge;[1] and the northeast by the Gakkel Ridge, with its northwest border still being explored.
The Isua greenstone belt in southwestern Greenland contains the oldest known rocks on Earth dated at 3.7–3.8 billion years old.
[3] The Precambrian basement of Greenland formed an integral part of the Laurentian Shield that is at the core of the North American continent.
Baffin Bay is the northwestern extension and terminus of the North Atlantic-Labrador Sea rift system that started forming 140 million years ago in the Early Cretaceous epoch.
As of 2009[update], scientists have been unable to correlate the seismicity with particular geological structures or geophysical anomalies.