Stratigraphic and tectonic evolution of La Purisima area (Baja California, Mexico) during late Oligocene and Miocene: implications for the Pacific margin evolution

The study of the Neogene sequences outcropping in the La Purisma area, Baja California Sur, Mexico, has demonstrated the presence of regional unconformities separating the main sedimentary bodies. On the basis of stratigraphic and structural analyses, we propose a new stratigraphic framework in terms of depositional sequences. The combined analysis of the stratigraphic and tectonic evidences is consistent with complex active wrenching along the Pacific margin. -from Authors