INVESTIGADORES
RAIGEMBORN Maria Sol
artículos
Título:
STRATIGRAPHY AND DEPOSITIONAL ENVIRONMENTS OF THE SANTA CRUZ FORMATION (EARLY?MIDDLE MIOCENE) ALONG THE RÍO SANTA CRUZ, SOUTHERN PATAGONIA, ARGENTINA
Autor/es:
CUITIÑOS, JOSÉ IGNACIO; FERNICOLA JUAN CARLOS; M. SOL RAIGEMBORN; KRAPOVICKAS VERONICA
Revista:
APA Publicación Electrónica
Editorial:
asociacion paleontologica argentina
Referencias:
Lugar: buenos aires; Año: 2019
ISSN:
2469-0228
Resumen:
The Santa Cruz Formation is an Early?Middle Miocene terrestrial sedimentary succession widely distributed in southern Patagonia.Particularly, it is exposed along the southern margin of the Río Santa Cruz valley where the sedimentological and stratigraphical features aredescribed for three localities. From east to west these localities are: Barrancas Blancas, Segundas Barrancas Blancas and Yaten Huageno. Thefacies analysis permits us to identify three associations, representing deposition in 1) low-energy floodplains; 2) crevasse splays and sheetfloods; and 3) fluvial channels. The three localities are chronologically equivalent and represent accumulation in an aggradational lowgradientfluvial system that drained towards the east and northeast from the Patagonian Andes to the Atlantic sea. Abundant pedogenicfeatures and some trace fossils are consistent with a temperate subhumid climate and in part, a grassland environment.
