Laurentia

Origin

Ultimately named after the Saint Lawrence River.

Full definition of Laurentia

Proper noun

1. (geology) The craton that forms the geological core of North America, and that was a separate continent in the past (before merging into Laurasia).
• 2015, Kent C. Condie, Plate Tectonics & Crustal Evolution, Laurentia includes most of North America, Scotland and Ireland north of the Caledonian suture, Greenland, Spitzbergen, and the Chukotsk peninsula of eastern Siberia.