Recent Volcanic Activity Along the Southern EPR (SEPR) Posted by agimarc on 2023-07-15 Posted in: Not assigned yet, Science. Tagged: axial graben, Basalt, lava flow, Lava lake, lobate, pillow, Seamount, sheet, Southern East Pacific Rise. Leave a comment Map of Southern EPR (western border of the Nazca Plate in the center of the map) and two microplates toward its southern end. Image courtesy Wiki Continue Reading