Fig. 8
From: Ancient slabs beneath Arctic and surroundings: Izanagi, Farallon, and in-betweens
Vertical cross-sections of \({V}_{P}\) tomography along eight profiles beneath North America and Greenland as shown on the inset map. The 410-km and 660-km discontinuities are shown in black solid lines. The thick black lines on the surface denote land areas. Active volcanoes within a ±2° width of each profile are shown as red triangles. The color scale and masking threshold are the same as those in Fig. 7. CAA = Canadian Arctic Archipelago