(Table DR1) Trace element contents in basalts from ODP Hole 33-317A

Numerous large igneous provinces formed in the Pacific Ocean during Early Cretaceous time, but their origins and relations are poorly understood. We present new geochronological and geochemical data on rocks from the Manihiki Plateau and compare these results to those for other Cretaceous Pacific plateaus. A dredged Manihiki basalt gives an 40Ar-39Ar age of 117.9+/-3.5 Ma (2 sigma), essentially contemporaneous with the Ontong Java Plateau ~2500 km to the west, and the possibly related Hikurangi Plateau ~3000 km to the south. Drilled Manihiki lavas are tholeiitic with incompatible trace element abundances similar to those of Ontong Java basalts. These lavas may result from high degrees of partial melting during the main eruptive phase of plateau formation. There are two categories of dredged lavas from the Danger Islands Troughs, which bisect the plateau. The first is alkalic lavas having strong enrichments in light rare earth and large-ion lithophile elements; these lavas may represent late-stage activity, as one sample yields an 40Ar-39Ar age of 99.5+/-0.7 Ma. The second category consists of tholeiitic basalts with U-shaped incompatible element patterns and unusually low abundances of several elements; these basalts record a mantle component not previously observed in Manihiki, Ontong Java, or Hikurangi lavas. Their trace element characteristics may result from extensive melting of depleted mantle wedge material mixed with small amounts of volcaniclastic sediment. We are unaware of comparable basalts elsewhere.

Sporomorphs and quantitative analysis of the Eocene record from IODP Hole 318-U1356A

The early Eocene epoch was characterized by extreme global warmth, which in terrestrial settings was characterized by an expansion of near-tropical vegetation belts into the high latitudes. During the middle to late Eocene, global cooling caused the retreat of tropical vegetation to lower latitudes. In high-latitude settings, near-tropical vegetation was replaced by temperate floras. This floral change has recently been traced as far south as Antarctica, where along the Wilkes Land margin paratropical forests thrived during the early Eocene and temperate Nothofagus forests developed during the middle Eocene. Here we provide both qualitative and quantitative palynological data for this floral turnover based on a sporomorph record recovered at Integrated Ocean Drilling Program (IODP) Site U1356 off the Wilkes Land margin. Following the nearest living relative concept and based on a comparison with modern vegetation types, we examine the structure and diversity patterns of the Eocene vegetation along the Wilkes Land margin. Our results indicate that the early Eocene forests along the Wilkes Land margin were characterized by a diverse canopy composed of plants that today occur in tropical settings; their richness pattern was similar to that of present-day forests from New Caledonia. The middle Eocene forests were characterized by a canopy dominated by Nothofagus and exhibited richness patterns similar to modern Nothofagus forests from New Zealand.

Planktonic foraminifers in DSDP Holes 30-289 and 33-315A

The work is based on samples from Deep-Sea Drilling in the Pacific Ocean and from natural sections in its continental setting. Species composition of planktonic foraminifera from Maastrichtian sediments of the Pacific and South Atlantic oceans, as well as from marginal seas of Australia and New Zealand and epicontinental basins of the northern hemisphere has been analysed. Two main issues: reconstruction of Maastrichtian climatic zonality, and reconstruction of Maastrichtian paleodepths. Four bipolar climatic zones have been distinguished. According to preservation of planktonic foraminifera and composition of their complexes three levels of dissolution have been identified.

Cuadro 33 : evidencias y encuentros en la búsqueda de compañeros desaparecidos de Mendoza

El Cuadro 33 es un sector del Cementerio de la Ciudad de Mendoza que, según registros y testimonios, siempre estuvo destinado a enterrar a los denominados NN. Desde 2010 hasta la fecha, el Equipo Argentino de Antropología Forense ha realizado seis excavaciones en busca de restos de compañeros desaparecidos durante la última dictadura cívico-militar. La búsqueda fue posible gracias a la investigación que realizaron durante años miembros de la Comisión Familiares de Detenidos Desaparecidos por Razones Políticas de Mendoza, y que fue presentada ante el Juzgado ofreciendo la evidencia necesaria para ordenar las excavaciones.

Cuadro 33

El Cuadro 33 del Cementerio de la Capital es el lugar donde se entierra a los NN, en general personas sin hogar ni familia que reclame sus cuerpos. A partir de una investigación realizada por Mariú Carrera e Isabel Güinchul, se descubrió que esa parcela había sido utilizada para realizar enterramientos clandestinos de jóvenes militantes, durante la última dictadura militar. Mariú e Isabel son miembros de la organización "Familiares de Detenidos Desaparecidos por Razones Políticas Mendoza" y durante años, de a poco, sin experiencia, pero con un rigor y una tenacidad muy firmes, lograron que un equipo de antropólogos especializados en causas de violación a los derechos humanos, accediera al Cuadro 33 del Cementerio de la Capital, encontrara pruebas de sus sospechas y aportara datos claves en los juicios contra los genocidas. Cuadro 33 cuenta la historia de esa investigación, sus resultados y el camino de dos mujeres, que sin medios ni formación específica, avanzaron con valentía hacia la verdad en búsqueda de la justicia.

Cecchetto, Gabriela y Zusman, Perla (comp.) (2012), La institucionalización de la geografía en Córdoba. Contextos, instituciones, sujetos, prácticas y discursos (1878-1984). Córdoba, Editorial Universidad Nacional de Córdoba, 242 p. ISBN: 978-950-33- 0979-7

Fil: Llorens, Santiago. Universidad Nacional de Córdoba

Martiré, Eduardo. Fernando VII y la América revolucionaria (1814-1833). "Extranjeros en su tierra." Córdoba: Facultad de Derecho y Ciencias Sociales de la Universidad Nacional de Córdoba, 2015, 257 páginas. ISBN: 978-950-33-1211-7.

Fil: Acevedo, Alba María. Universidad Nacional de Cuyo