Age and paleogeography of the marine transgressions at the Paleogene-Neogene boundary in Patagonia, Southern Argentina

PARRAS, ANA; CASADIO, SILVIO; FELDMANN, RODNEY; GRIFFIN, MIGUEL; SCHWEITZER, CARRIE

Denver

Congreso; 2004 Geological Society of America Annual Meeting; 2004

Geological Society of America

Atlantic transgressions in southern Patagonia across the Paleogene-Neogene boundary resulted in deposition of richly fossiliferous marine sediments grouped under the informal name of "Patagoniano" (Patagonian). These occur along the present-day Atlantic coast and the foothills of the Andes but are separated by broad expanses of grassland, making correlations difficult. Modern estimates of the age of...