El papel de la UIA en el conflicto del campo (marzo-julio 2008)

En este trabajo nos proponemos realizar un recorrido preliminar a partir de la revisión de fuentes periodísticas, tomadas de los principales diarios de la Ciudad de Buenos Aires, que nos permitan identificar algunas pistas para abordar el comportamiento de la burguesía industrial, representada en la Unión Industrial Argentina (UIA), frente al llamado conflicto del 'campo' que se desarrolló entre marzo y julio del año 2008. En ese momento las entidades patronales del agro: la Sociedad Rural Argentina (SRA), la Federación Agraria Argentina (FAA), las Confederaciones Rurales Argentinas (CRA) y la Confederación Intercooperativa Agropecuaria (ConInAgro); se enfrentaron con el gobierno nacional encabezado por la Presidenta Cristina Fernández de Kirchner. El conflicto se desencadenó por la decisión del gobierno de cambiar los mecanismos impositivos aplicados a la exportación de granos y subir la alícuota aplicada a la soja. En este contexto nos interesa ver cómo interviene a lo largo del conflicto la Unión Industrial Argentina. Según lo relevado en la prensa, podríamos plantear que la UIA tuvo una política oscilante que se desarrolló entre tres posturas diferentes, el apoyo explicito al gobierno nacional, la mediación neutral entre los actores, y la crítica abierta al gobierno nacional

Diatoms and Silicoflagellates from ODP Hole 114-699A and Site 114-704

The stratigraphic ranges and relative abundances of selected diatoms and silicoflagellates are presented from three Neogene sedimentary sequences from the subantarctic South Atlantic. These data were compiled from Hole 699A in the southwest South Atlantic and Holes 704A and 704B in the southeast South Atlantic. Thirty-five samples were examined from a 67.5-m section of Hole 699A, which is mostly late Miocene or younger in age. A total of 225 samples was examined from the upper 569.1-m lower Miocene to Quaternary section in Holes 704A and 704B. Although the partial census of the Site 704 sequences is only preliminary, it reveals that the Neogene is remarkably complete and serves as a reference for further detailed examination of an important biostratigraphic-magnetostratigraphic reference section for the Neogene record of the Southern Ocean.

Iridium and other element concentrations and magnetostratigraphy across the Cretaceous/Tertiarty boundary in ODP Hole 122-761C

Samples from Ocean Drilling Program Hole 761C, collected on both sides of the Cretaceous/Tertiary boundary have been analyzed for their chemical and mineralogical content. The sediment consists of nannofossil ooze with variable amounts of clay. The boundary is marked by a color change associated with a nearly step-like decrease of the carbonate fraction. Paleomagnetic data and the drop of the carbonate content indicate that a strong reduction of the sedimentation rate occurred at the boundary and persisted for million of years. An iridium anomaly of 80 ng/cm**2, together with overabundances of Cr and Fe, are found in close coincidence with the planktonic crisis. These enrichments can be explained by the infall of =0.16 g/cm2 of Cl-like chondritic material. Co and Ni enrichments and a great quantity of Ni-rich magnetites are also observed in the basal Danian. These elements and minerals excepted, the composition of the insoluble fraction appears to be nearly unchanged across the boundary. Chemical and mineralogical observations support a cosmic origin for the Cretaceous/Tertiary event but do not reveal the presence of any significant impact ejecta.