PERSONAL DE APOYO
REGUERO Marcelo Alfredo
congresos y reuniones científicas
Título:
MAMMALIAN BIOSTRATIGRAPHY AND BIOCHRONOLOGY AT GRAN BARRANCA: THESTANDARD REFERENCE SECTION FOR THE CONTINENTAL MIDDLE CENOZOIC OF SOUTH AMERICA
Autor/es:
CARLINI, A.A.; MADDEN, R.H.; VUCETICH, M.G.; BOND, M.; LÓPEZ, G.M.; REGUERO, M.A.; SCARANO, A.
Lugar:
La Plata
Reunión:
Congreso; XVI Congreso Geológico Argentino; 2005
Institución organizadora:
UNLP
Resumen:
The Sarmiento Formation at Gran Barranca is a 285m thick composite section containing over 49 different fossil-bearing levels. Based on the stratigraphic occurrences of standard index and guide taxa, there are at least six different faunal zones. The occurrences of Notostylops, Astraponotus, Pyrotherium, Colpodon and Astrapothericulus together with other mammalian guide taxa permit recognition of the standard sequence of middle Cenozoic South American Land-Mammal Ages at Gran Barranca. In addition, clear stratigraphic relationships between fossil mammals, dated tuffs and lavas, magnetic polarity intervals, and unconformities of constrained temporal duration, permit establishing a refined biochronology for assemblages and biozones.
