Laurentian (French: Laurentides or Laurentien) may refer to: Anything related to Saint Lawrence or the Saint Lawrence River Laurentia, the craton at the heart of the North American continent The exposed parts are also known as the Canadian Shield, the Laurentian Shield or the Laurentian Plateau. The Laurentian Abyss or Abyssal - a trench off the eastern coast of Canada The Laurentian Divide, (also called the "Northern Divide"), a continental divide in North America The Laurentian mountains i… (More on Laurentian)