Changes in calcareous nannofossil assemblages across the Paleocene/Eocene transition from the paleo-equatorial Pacific Ocean

Quantitative analyses of selected calcareous nannofossils in deep-sea sections recovered from the paleo-equatorial Pacific (ODP Leg 199) provide new information about biostratigraphy, biochronology and the evolutionary history of calcareous nannofossils across the Paleocene/Eocene transition interval. The sediment cores from ODP Leg 199 represent the first continuous Paleocene/Eocene boundary sections ever to be sampled in the central equatorial Pacific Ocean. Calcareous nannofossil assemblages are studied to document the distribution of biostratigraphically useful taxa such as Ericsonia, Discoaster, Fasciculithus, Rhomboaster and Tribrachiatus. Focus is given to the evolution of the Rhomboaster-Tribrachiatus lineage in the lower Eocene interval at Site 1215, and on the stratigraphic relationship of these taxa relative to species in the genus Fasciculithus. Critical intervals of North Atlantic DSDP Site 550 have also been re-examined. The Tribrachiatus digitalis morphotype was described at Site 550 from an interval affected by down-hole contamination, partly originating from within the Tribrachiatus orthostylus range. The T. digitalis morphotype represents an evolutionary transitional form between T. contortus and T. orthostylus, entering the stratigraphic record within the range of the former species and disappearing within the lower part of the range of the latter species. The subzonal subdivision of Zone NP10 hence collapses. Lithological and colour variability reflecting orbital cyclicity occur in the lower Eocene of Site 1215, permitting a relative astronomical age calibration of the Tribrachiatus taxa. The distinct Rhomboaster spp.-Discoaster araneus association also occurs in the paleo-equatorial Pacific Ocean, together with a marked decrease in diversity of Fasciculithus spp. Site 1220 reveals a short peak abundance of Thoracosphaera spp. just above the P/E boundary interval, which probably reflects a stressed surface water environment.

(Table DR1) Biogenic silica and chert in the Pacific Ocean, DSDP and ODP data

Evidence for the dissolution of biogenic silica at the base of pelagic sections supports the hypothesis that much of the chert formed in the Pacific derives from the dissolution and reprecipitation of this silica by hydrothermal waters. As ocean bottom waters flow into and through the crust, they become warmer. Initially they remain less saturated with respect to dissolved silica than pore water in the overlying sediments. With the diffusion of heat, dissolved ions, and to some extent the advection of water itself, biogenic silica in the basal part of the sedimentary section is dissolved. Upon conductively cooling, these pore waters precipitate chert layers. The most common thickness for the basal silica-free zone (20 m) lies below the most common height of the top of the chert interval above basement (50 m). This mode of chert formation explains the frequent occurrence of chert layers at very shallow subbottom depths in pelagic sections of the Pacific. It is also consistent with the common occurrence of cherts

Benthic foraminifera stratigraphy of sediments from ODP Leg 199 sites

Benthic foraminifers from Ocean Drilling Program Leg 199 Holes 1215A, 1220B, and 1221C were examined across the Paleocene/Eocene boundary. Assemblages were studied in 240 samples. The benthic foraminiferal extinction event that correlates with the Paleocene/Eocene epoch boundary was recognized at these sites. Benthic assemblages before the event are characterized by high diversity, but those after the event are low in diversity. An assemblage of agglutinated foraminifers without carbonate cement was recognized at Sites 1220 and 1221. These assemblages were typically found after the event. The discovery of such agglutinated assemblages has never been reported before at this boundary.

Late Eocene-early Oligocene radiolarian events and abundances in ODP Leg 199 sediments

During Ocean Drilling Program Leg 199, eight sites (Sites 1215-1222) were cored in the Central Pacific. Late Eocene-early Oligocene thick radiolarian-rich biogenic sediments were collected from Holes 1218A, 1219A, and 1220A. This is the first attempt to calibrate the ages of Paleogene radiolarian events using magnetostratigraphy in this region. A total of 107 species and species groups, which are valuable for stratigraphic correlation, are listed with numeric data and figures. Among these three holes, a total of 77 radiolarian events were recognized and their ages were calibrated by correlation with paleomagnetic events recorded in Hole 1220A.

Diário da Constituinte [gravação de vídeo] : [programa n. 199]

Começa na Assembleia Nacional Constituinte (ANC) o debate das emendas populares e cada uma delas será defendida por representantes da sociedade. O primeiro debate das emendas populares será sobre os seguintes temas: direitos da mulher, saúde da mulher, família, direitos da família, aposentadoria da mulher. No projeto do Relator Bernardo Cabral (PMDB-AM) a mulher perdeu o direito a uma aposentadoria especial e só vai se aposentar após 35 anos de contribuição. A Deputada Beth Azize (PSB-AM) convoca as mulheres para defender a aposentadoria após 25 anos de serviço. A Bancada Nordestina volta a reunir-se e decide ampliar o movimento unindo-se com constituintes do Norte e do Centro-Oeste, em defesa de uma reforma tributária mais justa que beneficie as regiões mais pobres e subdesenvolvidas. O Deputado José Luiz Maia(PDS-PI) considera que é necessário que o bolo tributário seja dividido equitativamente e que o orçamento seja aplicado regionalmente. O Deputado Átila Lira (PFL-PI) afirma que a regionalização dos investimentos diminuirá as diferenças. O Deputado Ubiratan Aguiar (PMDB-CE) diz que basta de discriminação contra o Nordeste. Definidos os pontos pendentes do substitutivo: na reforma agrária a imissão de posse será depois de 90 dias da desapropriação, a anistia será parcial e o sistema de governo será o parlamentarismo. O Senador Fernando Henrique Cardoso (PMDB-SP) explica como será o parlamentarismo previsto no substitutivo. O Deputado Bernardo Cabral (PMDB-AM) entrega o projeto ao Presidente da Assembleia Nacional Constituinte (ANC) Ulysses Guimarães (PMDB-SP). O Deputado Bernardo Cabral (PMDB-AM) informa sobre o mandato do Presidente Sarney e sobre a implementação do parlamentarismo. Opinião dos constituintes sobre o sistema de governo. O Deputado Francisco Carneiro (PMDB-DF) considera que o melhor sistema de governo é o presidencialismo, com um presidente forte, um Poder Legislativo na plenitude de suas prerrogativas e um Poder Judiciário autônomo. O Deputado Francisco Coelho (PFL-MA) sugere a instituição do parlamentarismo por etapas. O Deputado Michel Temer (PMDB-SP) informa que o parlamentarismo é um regime muito grandioso que não deve ser desmerecido sem uma consulta popular. O Senador José Fogaça (PMDB-RS) informa que o parlamento não pode oferecer ao povo brasileiro o dilema de escolher entre o ruim, que é o presidencialismo, e o desconhecido, que é o parlamentarismo.

Análisis de las principales novedades del Reglamento (UE) 1215/2012 en la conquista de la libre circulación de las resoluciones en el espacio judicial europeo

El objetivo principal de este trabajo fin de grado es resaltar las novedades que ha incorporado el Reglamento 1215/2012 en el objetivo de un avance en la consecución de un verdadero espacio judicial europeo con el objeto de potenciar la libre circulación de las resoluciones judiciales en materia civil y mercantil en el ámbito de la Unión Europea. Los dos grandes objetivos de la reforma, la eliminación del exequátur y la extensión de las reglas unificadas de competencia con el propósito de suprimir la remisión a las reglas nacionales cuando el demandado no está domiciliado en un estado miembro, son objeto de estudio y crítica en este trabajo.

C 199 INST-D 2013. 380 Productos de diversificación en paja toquilla de Sandoná - Nariño.

11 fotografías a color.