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Germán Aguilar,Joseph Martinod,Matías Gallardo,Christian Sue
Pág. 1 - 21
We present a study on the glacial and paraglacial geomorphology of a Patagonian Cordillera Valley that is key to understanding evolution of the great lakes of Patagonia. 10Be cosmogenic nuclide exposure ages of ice-moulded surfaces from the Bayo River Va...
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Sergio F. Vizcaino,M. Susana Bargo,M. Encarnación Pérez,Inés Aramendía,José I. Cuitiño,Eduardo S. Monsalvo,Evangelos Vlachos,Jorge I. Noriega,Richard F. Kay
Pág. 382 - 422
The early-middle Miocene continental Cerro Boleadoras Formation (CBF) crops out in the area of Cerro Boleadoras and Cerro Plomo on the western slope of the Meseta del Lago Buenos Aires, northwestern Santa Cruz Province, Argentina. The lower levels of the...
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Giovanni Zanchetta,Marta Pappalardo,Alessio Di Roberto,Monica Bini,Ilenia Arienzo,Ilaria Isola,Adriano Ribolini,Gabriella Boretto,Enrique Fuck,Daniela Mele,Massimo D?Orazio,Fabio Marzaioli,Isabella Passariello
Pág. 267 - 280
In this paper we illustrate the stratigraphy, geochronology, and geochemistry (major, minor, trace elements and Sr-isotopes) of a Holocene tephra layer found within coastal sedimentary deposits north of Caleta Olivia (Santa Cruz Province, Argentina). The...
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Peter K. Bijl,G. Raquel Guerstein,Edgar A. Sanmiguel Jaimes,Appy Sluijs,Silvio Casadio,Victor Valencia,Cecilia R. Amenábar,Alfonso Encinas
Pág. 185 - 218
The tectonic opening of the Tasmanian Gateway and Drake Passage represented crucial geographic requirements for the Cenozoic development of the Antarctic Circumpolar Current (ACC). Particularly the tectonic complexity of Drake Passage has hampered the ex...
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José Ignacio Cuitiño,Roberto Ventura Santos,Pablo Joaquin Alonso Muruaga,Roberto A. Scasso
Pág. 364 - 385
Early Miocene shallow marine deposits in the region of Lago Posadas-Meseta Belgrano (Argentina) represent part of the ?Patagoniense? transgression, an Atlantic marine incursion that flooded large part of Patagonia, including the Austral (foreland) Basin ...
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María Soledad Osores,Arnau Folch,Estela Collini,Gustavo Villarosa,Adam Durant,Gloria Pujol,José G. Viramonte
Pág. 262 - 276
The 2008 Chaitén Volcano eruption began on 2 May 2008 with an explosive phase that injected large amounts of tephra into the atmosphere. During the first week of the eruption, volcanic ash clouds were transported for hundreds of kilometres over Argentina...
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M.E BOBBA,J. L. MINETTI
Based on a regional drought index carried out by other authors (Minetti et al., 2004), it has been possible to associate droughts with atmospheric pressure anomalies in South America. We attempted to group the fields of atmospheric pressure anomali...
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M.H GONZÁLEZ,N.M. SKANSI,F. LOSANO
The aim of this study is to detect the possible causes of the May-to-July rainfall (MJJ) over the Limay and Neuquén river basins. In order to establish the existence of previous circulation patterns associated with interannual rainfall variability, the m...
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Norberto Malumian,Gabriel Jannou
Pág. 345 - 374
The succession of microfossil assemblages in the almost complete marine Late Cretaceous-Miocene stratigraphic column found in the Fuegian Andes, the orogenic margin of the Austral Basin, reveals a close relationship with the local tectonic events, the At...
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