Laurentia, also called the North American craton.

Palaeomap of North American and Scandinavian cratons, basement rocks, and orogenic belts

Laurentia is a large continental craton. It forms the ancient geological core of the North American continent.

Originally, it included the core of Greenland and the northwestern part of Scotland, known as the Hebridean Terrane. Laurentia is also called the North American Craton. It is a modern geological feature, and it is also a very ancient geological core made of igneous rock. It is nearly four billion years old.