“…[ Hare and Gardner , ; Lundberg , ; Baumgartner , ; Marshall and Anderson , ; Gardner et al , ; Marshall , ; Sak et al , ]. Within the region affected by smooth subduction, the geologic units of the Nicoya Peninsula are dissected by an array of active high‐angle faults with variable orientations that are interpreted to accommodate lateral escape to the northwest toward Nicaragua (Figure ) [ Baumgartner , ; Denyer and Alvarado , ; Sak et al , ; Montero and Denyer , ]. This fore‐arc sliver transport, which is also evident in horizontal displacements derived from GPS signals (Figures and a), is proposed to result from either an increase in plate motion obliquity or escape away from Cocos Ridge collision [ Dixon , ; Lundgren et al , ; Norabuena et al , ; Lewis et al , ; La Femina et al , ; Montero and Denyer , ; Feng et al , ; Kobayashi et al , ].…”