Fig. 5
From: Seismic evidence for a mantle suture and implications for the origin of the Canadian Cordillera
Three mechanisms for the formation of the Cordillera–craton boundary. In the accretionary hypothesis, the Cordillera–craton boundary formed as a destructive boundary through either a lithosphere delamination23 or b viscous thermal erosion. In the delamination model (a), the absolute North American plate motion rate is obtained from refs. 50,51,52. c A continental collision model that involves terminal suturing between a ribbon continent and the North America craton.
