Eduardo B. Olivero

TL;DR: The stratigraphy of the Argentinean Fuegian Andes reveals contrasting Mesozoic-Cenozoic tectonic regimes as discussed by the authors, and the results of the deformation and subsidence along the northern orogenic margin originated the Austral and Malvinas foreland basins.

TL;DR: In this article, seven stratigraphic units reflect the tectonic evolution of the Argentinian Fuegian Andes: Basement (Paleozoic-Jurassic), Lemaire Formation (Upper Jurassic); Yahgan-Beauvoir formations (Lower Cretaceous); Cerro Matrero Formation (UPPER CRETAGE); Rio Claro Formation (PALEocene); La Despedida Group (Eocene); and Cabo Pena Formation (uppermost Eocene-Lower Oligocene).

TL;DR: U/Pb detrital-zircon geochronology of eleven sandstones collected from Cretaceous through Oligocene strata of the eastern Magallanes foreland basin of southernmost Argentina records a dramatic provenance shift near the end of the middle Eocene at ca. 39.

TL;DR: A number of fossil pollen grains preserved in dinosaur-bearing deposits from the Late Cretaceous of Antarctica that drastically pushes back the timing of assumed origin of the Asteraceae, bearing important implications in the evolution of flowering plants in general.

TL;DR: In the early Campanian, ammonites of the NG and MG sequences are dominated by kossmaticeratids, both in generic richness (which is much lower than in the N Sequence) and specimen abundance, but their diversity patterns do not reflect the expansion of the shelf during peak transgression as mentioned in this paper.