CONICET | Buscador de Institutos y Recursos Humanos

Even though the Holocene transgression has reached higher elevations in the Southern Hemisphere than in the Northern Hemisphere, the condition of global simultaneity of Pleistocene "highs lands " allows using them to recognize regional tectonic behavior (stability, uprising, subsidence). in the Province of Buenos Aires, the elevations reached by the transgressive maximum of the Marine Isotope Stage (MIS) 5e (known as "Belgranense", Sangamonan, Eemian) indicate regional stability (with some variations in between different tectonic blocks). However, the oldest known Quaternary transgression, known as "Interensenadense" (independently of whether or not it is considered coincident with MIS 7, 9 or II) indicates subsidence in relation w:th the model developed for southern Brazil (Vilwock and Tomazelli, 2000). Contrarily, the Pleistocene "highslollds" of Patagonia and Tierra del Fuego clearly indicate a regional tectonic uplifting, with significant differences in between the different zones. For southern Santa Cruz and Tierra del Fuego, the interaction between the marine deposits ("highs/ollds '') and the glacial deposits and landforms enable us completing the glacioeustatic scheme, counting also as an advantage the distribution of regionally extended ash fall beds as marker beds.