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Os dois turnos para as eleições municipais deste ano serão definidos nas transitórias e os Líderes já têm acordo até o art. 80 para as votações do esforço concentrado. Houve consenso entre os Líderes de partidos sobre a supressão da moção de censura a ministro de estado por 2/3 do congresso, por considerá-lo incompatível com o regime presidencialista. Foi mantido o dispositivo que atribui à Câmara o direito de recomendar ao Presidente da República o afastamento de alto funcionário que não haja de acordo com os interesses do povo e da administração. Houve acordo para a elegibilidade de parentes de prefeitos, governadores e presidente para cargos executivos, estabelecendo-se que será proibida no texto permanente, mas no texto das transitórias será admitida para as eleições de 1988. Os líderes decidem manter na parte permanente do texto as eleições em dois turnos em todos os níveis eletivos, inclusive para cidades com mais de 200 mil eleitores, mas na parte transitória da carta pode cair o 2º turno, para as eleições deste ano. Constituintes manifestam-se sobre a supressão dos dois turnos para as eleições de 1988 e sobre a evolução dos trabalhos do esforço concentrado, para concluir a Constituição. O presidente da constituinte acredita que o atraso será compensado com acordos

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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

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9. Horkheimer, Max: Memorandum für John Slawson: "German reeducation and suggestions for an investigation on the spot" Februar 1948; verschiedene Typoskripte, zum Teil mit handschriftlichen Korrekturen, circa 61 Blatt; drei Teilstücke, eins davon mit eigenhändigen Korrekturen, 6 Blatt; Manuskript, 1 Blatt; 10. Horkheimer, Max: Zur politischen Lage im Nachkriegsdeutschland und den Möglichkeiten des Instituts. Eigenhändige Notizen, 1 Blatt; 11. Eckert, Juliane: 1 eigenhändigen Brief mit Unterschrift an Bruno Manuel, Mannheim, 13.04.1947, 2 Blatt; 12. Auszug aus Sayers, Michael und Kahn, Albert E.: "The Plot Against the Peace". Typoskript, 1 Blatt; 13. Adressen-Notizen, 3 Blatt; 14. Materialien zu Fragen Nachkriegsdeutschlands, insbesondere zu den der Umerziehung. Drucksachen und Zeitungsausschnitte, nicht nummeriert. 1 Ordner;

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Subducted sediments play an important role in arc magmatism and crust-mantle recycling. Models of continental growth, continental composition, convergent margin magmatism and mantle heterogeneity all require a better understanding of the mass and chemical fluxes associated with subducting sediments. We have evaluated subducting sediments on a global basis in order to better define their chemical systematics and to determine both regional and global average compositions. We then use these compositions to assess the importance of sediments to arc volcanism and crust-mantle recycling, and to re-evaluate the chemical composition of the continental crust. The large variations in the chemical composition of marine sediments are for the most part linked to the main lithological constituents. The alkali elements (K, Rb and Cs) and high field strength elements (Ti, Nb, Hf, Zr) are closely linked to the detrital phase in marine sediments; Th is largely detrital but may be enriched in the hydrogenous Fe-Mn component of sediments; REE patterns are largely continental, but abundances are closely linked to fish debris phosphate; U is mostly detrital, but also dependent on the supply and burial rate of organic matter; Ba is linked to both biogenic barite and hydrothermal components; Sr is linked to carbonate phases. Thus, the important geochemical tracers follow the lithology of the sediments. Sediment lithologies are controlled in turn by a small number of factors: proximity of detrital sources (volcanic and continental); biological productivity and preservation of carbonate and opal; and sedimentation rate. Because of the link with lithology and the wealth of lithological data routinely collected for ODP and DSDP drill cores, bulk geochemical averages can be calculated to better than 30% for most elements from fewer than ten chemical analyses for a typical drill core (100-1000 m). Combining the geochemical systematics with convergence rate and other parameters permits calculation of regional compositional fluxes for subducting sediment. These regional fluxes can be compared to the compositions of arc volcanics to asses the importance of sediment subduction to arc volcanism. For the 70% of the trenches worldwide where estimates can be made, the regional fluxes also provide the basis for a global subducting sediment (GLOSS) composition and flux. GLOSS is dominated by terrigenous material (76 wt% terrigenous, 7 wt% calcium carbonate, 10 wt% opal, 7 wt% mineral-bound H2O+), and therefore similar to upper continental crust (UCC) in composition. Exceptions include enrichment in Ba, Mn and the middle and heavy REE, and depletions in detrital elements diluted by biogenic material (alkalis, Th, Zr, Hf). Sr and Pb are identical in GLOSS and UCC as a result of a balance between dilution and enrichment by marine phases. GLOSS and the systematics of marine sediments provide an independent approach to the composition of the upper continental crust for detrital elements. Significant discrepancies of up to a factor of two exist between the marine sediment data and current upper crustal estimates for Cs, Nb, Ta and Ti. Suggested revisions to UCC include Cs (7.3 ppm), Nb (13.7 ppm), Ta (0.96 ppm) and TiO2 (0.76 wt%). These revisions affect recent bulk continental crust estimates for La/Nb and U/Nb, and lead to an even greater contrast between the continents and mantle for these important trace element ratios. GLOSS and the regional sediment data also provide new insights into the mantle sources of oceanic basalts. The classical geochemical distinction between 'pelagic' and 'terrigenous' sediment sources is not valid and needs to be replaced by a more comprehensive understanding of the compositional variations in complete sedimentary columns. In addition, isotopic arguments based on surface sediments alone can lead to erroneous conclusions. Specifically, the Nd/Hf ratio of GLOSS relaxes considerably the severe constraints on the amount of sediment recycling into the mantle based on earlier estimates from surface sediment compositions.