INVESTIGADORES
CONCHEYRO Graciela Andrea
artículos
Título:
The Maastrichtian ? Danian at General Roca (Patagonia, Argentina):
Autor/es:
DEL RÍO, C. ; CONCHEYRO, A.; MARTINEZ, S.
Revista:
NEUES JAHRBUCH FUR GEOLOGIE UND PALAONTOLOGIE-ABHANDLUNGEN
Editorial:
E SCHWEIZERBARTSCHE VERLAGS
Referencias:
Lugar: Stuttgart; Año: 2011 vol. 259 p. 129 - 156
ISSN:
0077-7749
Resumen:
The Late Cretaceous ? Early Paleogene succession exposed in the type area of the Roca Formation (General Roca, Río Negro Province), has been sampled in detail. Analyses of the calcareous nannofossil assemblages indicate the Late Maastrichtian ? Early Danian interval (CC26-NP4 zones; MARTINI 1971), which is the first proved evidence of the Late Maastrichtian in the mentioned type area. Moreover, the ?Rocanense? invertebrate fauna has been placed in a high resolution biostratigraphic scheme based on the nannofossil zones, and three assemblages have been recognized
