Skaergaard intrusion

The Skaergaard intrusion in East Greenland is a layered igneous body formed about 56 million years ago during the opening of the North Atlantic, when magma was emplaced beneath older basalt and gneiss. Its unusual oval form and later tilting have exposed different levels of the body, including lower parts in the north and preserved roof sections in the south. Long regarded as a classic site for studying how magma cools and separates into layers, it preserves clear structures created by settling crystals and magma currents. Study of its floor, roof, and wall sequences has made it a major reference point for understanding magma chamber evolution.

Sermersooq · Greenland