Fig. 2
From: Seismic evidence for a mantle suture and implications for the origin of the Canadian Cordillera
P-wave and S-wave velocity anomalies resolved from finite-frequency tomography. a–c P-wave velocities at 100, 200, and 300 km depths, respectively. d–f The same as a–c but for S-wave velocities. The locations of two velocity profiles are shown by the purple lines at 100 km depth. The red dashed line marks the Rocky Mountain Trench. g, h P-wave velocity anomalies along two profiles in the southern Canadian Cordillera. i, j The corresponding S-wave velocity variation along the two profiles. The southern (AA′) and northern (BB′) profiles intersect with the Rocky Mountain Trench at about 50° and 52° N, respectively. The locations of the Rocky Mountain Trench and Cordilleran Deformation Front are respectively marked by the red and black lines at the surface. The black dashed line indicates the zero percent velocity contour, which approximates the location of the Cordillera–craton boundary
