Sedimentology of the shallow marine deposits of the Calafate Formation during the Maastrichtian transgression at Lago Argentino, Austral-Magallanes basin, Argentina

The Maastrichtian shallow marine deposits exposed at the south margin of the Lago Argentino within the Austral-Magallanes Basin are known as the Calafate Formation. In order to interpret the depositional systems and reconstruct the sequence stratigraphic architecture for this unit at its type locali...

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Detalles Bibliográficos
Autores principales: Odino Barreto, Andrea Lorena, Cereceda, Abril, Gómez Peral, Lucía Elena, Coronel, Marina Denise, Tettamanti, Camila, Poiré, Daniel Gustavo
Formato: Articulo
Lenguaje:Inglés
Publicado: 2018
Materias:
Ciencias Naturales
Calafate formation
Shallow marine
Cretaceous
Austral basin
Upper cretaceous
Facies analysis
Transgressive infill
Wave and tidal systems
Austral magallanes
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/97455
https://ri.conicet.gov.ar/11336/83495
http://ppct.caicyt.gov.ar/index.php/lajsba/article/view/14331
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-97455
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Naturales
Calafate formation
Shallow marine
Cretaceous
Austral basin
Upper cretaceous
Facies analysis
Transgressive infill
Wave and tidal systems
Austral magallanes
spellingShingle Ciencias Naturales
Calafate formation
Shallow marine
Cretaceous
Austral basin
Upper cretaceous
Facies analysis
Transgressive infill
Wave and tidal systems
Austral magallanes
Odino Barreto, Andrea Lorena
Cereceda, Abril
Gómez Peral, Lucía Elena
Coronel, Marina Denise
Tettamanti, Camila
Poiré, Daniel Gustavo
Sedimentology of the shallow marine deposits of the Calafate Formation during the Maastrichtian transgression at Lago Argentino, Austral-Magallanes basin, Argentina
topic_facet Ciencias Naturales
Calafate formation
Shallow marine
Cretaceous
Austral basin
Upper cretaceous
Facies analysis
Transgressive infill
Wave and tidal systems
Austral magallanes
description The Maastrichtian shallow marine deposits exposed at the south margin of the Lago Argentino within the Austral-Magallanes Basin are known as the Calafate Formation. In order to interpret the depositional systems and reconstruct the sequence stratigraphic architecture for this unit at its type locality (Cerro Calafate), we acquire new data from seven stratigraphic sections. We recognized six facies associations (FA-1 to FA-6) corresponding to shallow marine deposits, which are organized vertically displaying a transition from shallower to deeper conditions, representing a ~90 m thick transgressive succession. The Calafate Formation deposits are differentiated into a lower wave-dominated coast (FA1, FA2 and FA3) and an upper tide-dominated coast (FA4, FA5 and FA6), each marked by the dominance of wave and tidal sedimentary processes, respectively. The Calafate Formation overlies the fluvial deposits of the Chorrillo Formation by a transgressive surface (TS), which is overlaid by a transgressive marine succession characterized by a retrogradational stacking pattern. The latter is finally covered by offshore transition marine deposits marking a progressive deepening of the depositional system that culminates with the maximum flooding surface (MFS). From here, an aggradational stacking pattern dominates the upper sandstones of the unit representing the highstand systems tract (HST), which is interpreted to be the cause of short-term periods when the accommodation space rate was nearly equaled to the sediment supply rate during the Maastrichtian.
format Articulo
Articulo
author Odino Barreto, Andrea Lorena
Cereceda, Abril
Gómez Peral, Lucía Elena
Coronel, Marina Denise
Tettamanti, Camila
Poiré, Daniel Gustavo
author_facet Odino Barreto, Andrea Lorena
Cereceda, Abril
Gómez Peral, Lucía Elena
Coronel, Marina Denise
Tettamanti, Camila
Poiré, Daniel Gustavo
author_sort Odino Barreto, Andrea Lorena
title Sedimentology of the shallow marine deposits of the Calafate Formation during the Maastrichtian transgression at Lago Argentino, Austral-Magallanes basin, Argentina
title_short Sedimentology of the shallow marine deposits of the Calafate Formation during the Maastrichtian transgression at Lago Argentino, Austral-Magallanes basin, Argentina
title_full Sedimentology of the shallow marine deposits of the Calafate Formation during the Maastrichtian transgression at Lago Argentino, Austral-Magallanes basin, Argentina
title_fullStr Sedimentology of the shallow marine deposits of the Calafate Formation during the Maastrichtian transgression at Lago Argentino, Austral-Magallanes basin, Argentina
title_full_unstemmed Sedimentology of the shallow marine deposits of the Calafate Formation during the Maastrichtian transgression at Lago Argentino, Austral-Magallanes basin, Argentina
title_sort sedimentology of the shallow marine deposits of the calafate formation during the maastrichtian transgression at lago argentino, austral-magallanes basin, argentina
publishDate 2018
url http://sedici.unlp.edu.ar/handle/10915/97455
https://ri.conicet.gov.ar/11336/83495
http://ppct.caicyt.gov.ar/index.php/lajsba/article/view/14331
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