Francis Zanfretta, Rollenbild, Kniestück, in: Auber, Daniel-François-Esprit: L'Enfant Prodigue

Signatur des Originals: S 36/F10310

John Francis Barnett, Brustbild

Signatur des Originals: S 36/F10584

Francis Planté, Kniestück

Signatur des Originals: S 36/F11720

Francis Planté, Brustbild, Profil

Signatur des Originals: S 36/G04311

Chemical composition of bottom sediments from the Discovery Deep, Red Sea rift zone

Hot brines in depressions of the central Red Sea contain thousands of times more iron, manganese and other metals than . After removal of salts, approximately half of sediments from these depressions consists of iron hydroxides and they are enriched in zinc, copper, lead and molybdenum. Hydrothermal deposits with the same complex of metals, located along the coast of the Red Sea, are correlated with faults and may be due to occurrences of Tertiary volcanism. Brines of similar composition are known in the Cheleken Peninsula. Certain geological and geochemical data indicate that such brines are of relatively deep origin.

Coccolithophore size, abundance and calcification across Drake Passage (Southern Ocean), 2009

This data was collected during a cruise across Drake Passage in the Southern Ocean in February 2009. This data consists of coccolithophore abundance, calcification and primary production rates, carbonate chemistry parameters and ancillary data of macronutrients, chlorophyll-a, average mixed layer irradiance, daily irradiance above the sea surface, euphotic and mixed layer depth, temperature and salinity.

El hombre como demiurgo en el pensamiento de Francis Bacon

Fil: Manzo, Silvia Alejandra. Universidad Nacional de La Plata. Facultad de Humanidades y Ciencias de la Educación; Argentina.

Manzo, Silvia. Entre el atomismo y la alquimia: la teoría de la materia de Francis Bacon. Buenos Aires, Biblos, 2006, 261 pp.

Fil: Calvente, Sofía Beatriz. Universidad Nacional de La Plata. Facultad de Humanidades y Ciencias de la Educación; Argentina.

Sedimentology and planktonioc foraminifera of core SU90-08

The observation by Heinrich (1988) that, during the last glacial period, much of the input of ice-rafted detritus to the North Atlantic sediments may have occurred as a succession of catastrophic events, rekindled interest on the history of the northern ice sheets over the last glacial period. In this paper, we present a rapid method to study the distribution of these events (both in space and time) using whole core low-field magnetic susceptibility. We report on approximately 20 cores covering the last 150 to 250 kyr. Well-defined patterns of ice-rafted detritus appear during periods of large continental ice-sheet extent, although these are not always associated within their maxima. Most of the events may be traced across the North Atlantic Ocean. For the six most recent Heinrich layers (HL), two distinct patterns exist: HL1, HL2, HL4, HL5 are distributed along the northern boundary of the Glacial Polar Front, over most of the North Atlantic between ~40° and 50°N; HL3 is more restricted to the central and eastern part of the northern Atlantic. The Nd-Sr isotopic composition of the material constituting different Heinrich events indicates the different provenance of the two patterns: HL3 has a typical Scandinavia-Arctic-Icelandic 'young crust' signature, and the others have a large component of northern Quebec and northern West Greenland 'old crust' material. These isotopic results, obtained on core SU-9008 from the North American basin, are in agreement with the study by Jantschik and Huon (1992), who used K-Ar dating of silt- and clay-size fractions of an eastern basin core (ME-68-89). These data confirm the large spatial scale of these events, and the enormous amount of ice-rafted detritus they represent.

El hombre como demiurgo en el pensamiento de Francis Bacon

Fil: Manzo, Silvia Alejandra. Universidad Nacional de La Plata. Facultad de Humanidades y Ciencias de la Educación; Argentina.

Manzo, Silvia. Entre el atomismo y la alquimia: la teoría de la materia de Francis Bacon. Buenos Aires, Biblos, 2006, 261 pp.

Fil: Calvente, Sofía Beatriz. Universidad Nacional de La Plata. Facultad de Humanidades y Ciencias de la Educación; Argentina.