Eocene Tectonics and Paleogeography (50 Ma).
Tertiary Eocene (50 Ma)
Intermontane and Baja BC blocks continue northward translation along with north-migrating Kula-Farallon plate boundary; many terranes approach their present latitude with respect to North America
Olympic terrane accreted
Extensive fore arc sedimentation along most of Cordilleran margin
Rocky Mountain foreland uplift, deformation, and shallow-subduction-related magmatism; interior sedimentation mostly restricted to Rocky Mountain foreland basins
Eocene Tectonic Map and Paleogeographic Map