Figure5

Contours of continental lithosphere thickness taken from the litho1.0 model (Pasyanos et al., 2014). Dark blue are the regions thicker than 250 km and lighter blue are regions between 130 and 250 km in thickness. Thinner regions have not been colored. The background is shaded relief computed for ETOPO1 (Eakins and Amante, 2009). Red polygons indicate the locations of broadband seismic studies that observe structures that have been interpreted to be ancient accreted terranes/terrane boundaries preserved within the continental lithosphere (1 – Bostock, 1998; 2 - Cook et al., 1998; 3 - Parker et al., 2015; 4 - Rondenay et al., 2000; 5 - Levin and Park, 2000; 6 - Pilia et al., 2015).