the laurentian

1 definition found

the laurentian - Collaborative International Dictionary of English v.0.48 :

  Laurentian \Lau*ren"tian\, a.
     Pertaining to, or near, the St. Lawrence River; as, the
     Laurentian hills.
     [1913 Webster]
  
     Laurentian period (Geol.), the lower of the two divisions
        of the Arch[ae]an age; -- called also the Laurentian.
        [1913 Webster]