Laurentian (French: Laurentides or Laurentien) may refer to:Anything related to Saint Lawrence or the Saint Lawrence RiverLaurentia, the craton at the heart of the North American continentThe 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 CanadaThe Laurentian Divide, (also called the "Northern Divide"), a continental divide in North AmericaThe Laurentian mountains in Quebec… (More on Laurentian)