Fig. 7: Shallow lower-mantle structure with reconstructed trench positions.
From: Subduction history of the Caribbean from upper-mantle seismic imaging and plate reconstruction

Slice at 920 km depth through tomographic model UU-P0713, 31. Red labels mark our interpretation of the high-velocity anomalies as derived from the subduction of: F Farallon, nG and sG northern and southern parts of the GAC. Coloured lines show our reconstructed positions of the trench at 90 and 100 Ma. The yellow lines (nG) and green lines (sG) indicate subduction to the northwest and southeast of the actively spreading Proto-Caribbean ridge (black stars), respectively.