Results 1 to 10 of about 873 (119)

Cenomanian-? early Turonian minimum age of the Chubut Group, Argentina: SHRIMP U–Pb geochronology

Journal of South American Earth Sciences, 2014
Abstract Four new SHRIMP U–Pb zircon ages older than 93 Ma from samples of the two uppermost formations accumulated in two different depocenters (Golfo de San Jorge and Canadon Asfalto basins) of the Chubut Group in central Argentinean Patagonia, establish a pre-late Cenomanian-? early Turonian age for the group.
Cesar Navarrete, Manuel Suarez, Mark Fanning   +2 more
exaly   +7 more sources

Detrital zircon geochronology and provenance of the Chubut Group in the northeast of Patagonia, Argentina

Journal of South American Earth Sciences, 2015
Abstract The Chubut Group constitutes the most widespread sedimentary unit in NE Patagonia, characterized by variable-energy fluvial deposits. U–Pb analysis of detrital zircons from two sections of the Chubut Group constraint the age of the oldest sedimentary rocks in the northeast of the Somuncura – Canadon Asfalto Basin.
George Gehrels, Elena Belousova, M Veronica GÜLER   +2 more
exaly   +3 more sources

Latest Cretaceous megaraptorid theropod dinosaur sheds light on megaraptoran evolution and palaeobiology [PDF]

Nature Communications
Recent fossil discoveries have cast considerable light on the palaeobiology of Megaraptora, a group of large-clawed carnivorous theropod dinosaurs known from Cretaceous deposits in Asia, Australia, and especially South America.
Lucio M. Ibiricu, Matthew C. Lamanna, Bruno N. Alvarez, Ignacio A. Cerda, Julieta L. Caglianone, Noelia V. Cardozo, Marcelo Luna, Rubén D. Martínez   +7 more
doaj   +2 more sources

Patagonian broken foreland and related synorogenic rifting: The origin of the Chubut Group Basin

Tectonophysics, 2015
Abstract The Central Patagonia is characterized by prominent continental deposits that belong to the Cretaceous Chubut Group Basin, whose tectonic setting remains controversial. It has been interpreted as a foreland basin, an extensional basin and even as a sag stage of a rift event. Related deposits outcrop as part of the Patagonian broken foreland,
A Folguera
exaly   +3 more sources

Exploring the effects of climatic and environmental heterogeneity on the spatial activity of Patagonian bats [PDF]

BMC Ecology and Evolution
Background The Patagonian region hosts endemic bat species and represents the southernmost distribution limit for several vespertilionids and molossids species. In cold temperate regions, insectivorous bats are more active during summer.
Analía Laura Giménez, Marta Gladys Grech, Óscar De Paz   +2 more
doaj   +2 more sources

Stratigraphy of the Chubut Group (Cretaceous, Golfo San Jorge Basin, Argentina): impacts of allogenic controls on the alluvial macro-architecture

Latin American Journal of Sedimentology and Basin Analysis
The Chubut Group (Cretaceous, Golfo San Jorge Basin) is a continental succession up to 6,000 meters thick, preserved in an endorheic basin. Its basal depositional system includes the fluvial Matasiete Formation and the lacustrine Pozo D-129 Formation ...
José Matildo Paredes, Nicolás Foix, José O. Allard, Sabrina Lizzoli, Sabrina X. Olazábal, Maisa A. Tunik   +5 more
doaj   +3 more sources

Insight into cretaceous floras: a synthesis from plant microfossils of the Chubut Group in the Golfo San Jorge Basin

Latin American Journal of Sedimentology and Basin Analysis
This study provides a comprehensive review of the key advances in micropaleontological research of the Chubut Group in the Golfo San Jorge Basin during the twenty-first century, with a particular emphasis on the plant microfossil record of two critical ...
Andrea De Sosa Tomas, Patricia Vallati
doaj   +1 more source

Association of depressive symptoms with incidence and mortality rates of COVID-19 over 2 years among healthcare workers in 20 countries: multi-country serial cross-sectional study [PDF]

BMC Medicine
Background Long-term deterioration in the mental health of healthcare workers (HCWs) has been reported during and after the COVID-19 pandemic. Determining the impact of COVID-19 incidence and mortality rates on the mental health of HCWs is essential to ...
Hiroki Asaoka, Kazuhiro Watanabe, Yuki Miyamoto, Alexandra Restrepo-Henao, Els van der Ven, Maria Francesca Moro, Lubna A. Alnasser, Olatunde Ayinde, Arin A. Balalian, Armando Basagoitia, Sol Durand-Arias, Mehmet Eskin, Eduardo Fernández-Jiménez, Freytes Frey Marcela Ines, Luis Giménez, Hans W. Hoek, Rodrigo Ezequiel Jaldo, Jutta Lindert, Humberto Maldonado, Gonzalo Martínez-Alés, Roberto Mediavilla, Clare McCormack, Javier Narvaez, Uta Ouali, Aida Barrera-Perez, Erwin Calgua-Guerra, Jorge Ramírez, Ana María Rodríguez, Dominika Seblova, Andrea Tenorio Correia da Silva, Linda Valeri, Oye Gureje, Dinarte Ballester, Mauro Giovanni Carta, Anna Isahakyan, Amira Jamoussi, Jana Seblova, Maria Teresa Solis-Soto, Ruben Alvarado, Ezra Susser, Franco Mascayano, Daisuke Nishi, HEROES group   +42 more
doaj   +2 more sources

Análisis composicional y procedencia de la Formación Peñas Coloradas, Grupo Río Chico (Paleoceno Superior-Eoceno?), en la región oriental de la cuenca del Golfo San Jorge, Chubut, Argentina Compositional analysis and origin of the Peñas Coloradas Formation, Río Chico Group (Late Paleocene-Eocene?), in the eastern region of the Golfo de San Jorge basin, Chubut, Argentina

Latin American Journal of Sedimentology and Basin Analysis, 2006
Se estudian preliminarmente, desde el punto de vista composicional, niveles arenosos de la Formación Peñas Coloradas (unidad inferior del Grupo Río Chico) del Paleoceno superior-Eoceno?, en los perfiles de Punta Peligro, Estancia La Rosa y Cañadón Hondo,
María Sol Raigemborn
doaj   +1 more source

A brachiosaurid sauropod from the Late Jurassic Cañadón Calcáreo Formation of Chubut, Argentina [PDF]

Fossil Record, 2006
Fragmentary sauropod remains from the Late Jurassic (Tithonian) Cañadón Calcáreo Formation of Chubut, Argentinean Patagonia, are derived from a taxon of large size, but with very slender forelimbs.
O. W. M. Rauhut
doaj   +5 more sources