Earth’s crust formed from melted mantle, yet the earliest record of this process is recorded only in crustal rocks. Isotopic dating of mantle rocks in the Ujaragssuit Nunât intrusion, southwest Greenland, identify melting events that occurred up to 4.36 Gyr ago, providing a mantle record of ancient melting to complement the crustal record.
- Judith A. Coggon
- Ambre Luguet
- Peter W. U. Appel
