SEAMOUNTS 483 Figure Seamount subduction has produced huge furrows and re entrants in the fore arc margin of Costa Rica Shaded relief bathymetry reproduced from Dominguez S, Lallemand SE, Malavieille J, and von Huene R (1998) Upper plate deformation associated with seamount subduction Tectonophysics 293: 207 224, copyright 1998, with permission from Elsevier