Inc. gr. fol. 20 (Ausst. 196) - Apocalypsis cum figuris

Vorbesitzer: Heinrich Anton Cornill-d'Orville

Radiocarbon, isotope, biogenic, and 230Th measurements for sediment core RC10-196

The subarctic North Pacific Ocean holds a large CO2 reservoir that is currently isolated from the atmosphere by a low-salinity layer. It has recently been hypothesized that the reorganization of these high-CO2 waters may have played a crucial role in the degassing of carbon dioxide to the atmosphere during the last deglaciation. This reorganization would leave some imprint on paleo-productivity records. Here we present 230Th-normalized biogenic fluxes from an intermediate depth sediment core in the Northwest Pacific (RC10-196, 54.7°N, 177.1°E, 1007 m) and place them within the context of a synthesis of previously-published biogenic flux data from 49 deep-sea cores north of 20°N, ranging from 420 to 3968 m water depth. The 230Th-normalized opal, carbonate, and organic carbon fluxes from RC10-196 peak approximately 13,000 calendar years BP during the Bølling/Allerød (B/A) period. Our data synthesis suggests that biogenic fluxes were in general lowest during the last glacial period, increased somewhat in the Northwest Pacific during Heinrich Event 1, and reached a maximum across the entire North Pacific during the B/A period. We evaluate several mechanisms as possible drivers of deglacial change in biogenic fluxes in the North Pacific, including changes in preservation, sediment focusing, sea ice extent, iron inputs, stratification, and circulation shifts initiated in the North Atlantic and North Pacific. Our analysis suggests that while micronutrient sources likely contributed to some of the observed changes, the heterogeneity in timing of glaciogenic retreat and sea level make these mechanisms unlikely causes of region-wide contemporaneous peaks in export production. We argue that paleo-observations are most consistent with ventilation increases in both the North Pacific (during H1) and North Atlantic (during B/A) being the primary drivers of increases in biogenic flux during the deglaciation, as respectively they were likely to bring nutrients to the surface via increased vertical mixing and shoaling of the global thermocline.

Víctor Gustavo Zonana. Arte, forma, sentido: la poesía de Daniel Devoto. Córdoba, Ediciones del Copista, 2010, 196 p.

En Arte, forma, sentido; La poesía de Daniel Devoto, Víctor Gustavo Zonana – Doctor en Letras por la Universidad Nacional de Cuyo e investigador del Conicet– incursiona una vez más en el rescate de voces que completan y profundizan el conocimiento de la generación poética argentina del ‘40, ya iniciado en libros anteriores como Sueños de un caminante solitario.

In-situ stress conditions at ODP Site 131-808

Shipboard laboratory index property data, shore-based consolidation tests, and in-situ stress and pore-pressure measurements are used in this study to constrain the stress conditions at ODP Site 808, Nankai Trough. Results of these tests are presented along with additional interpretations of porosity rebound and permeability. The sediment at Site 808 is highly affected by excess fluid pressures throughout the sediment column. Excess fluid pressure is severe below the major fault boundary, the décollement. The in-situ measurement of lateral stresses, which are shallow in the sediment section, confirms that the principal stress direction is rotated from a "normal" basin-type condition where the principal stress direction is vertical.

Variaciones sobre la forma escolar. Límites y posibilidades de la escuela media. Guillermina Tiramonti (dir.). (2011). Rosario, Argentina: FLACSO y Homo Sapiens, 256 páginas, ISBN: 978-950-808-638-9

Fil: Draghi, María José. Universidad Nacional de La Plata. Facultad de Humanidades y Ciencias de la Educación; Argentina.

Estilos de enseñanza. Sentidos personales y configuraciones de acción tras la semejanza de las palabras. Estela B. Cols (2011). Rosario: Homo Sapiens, 208 páginas, ISBN: 978-950-808-643-3

Fil: Traverso, Olga Viviana. Universidad Nacional de La Plata. Facultad de Humanidades y Ciencias de la Educación. Instituto de Investigaciones en Humanidades y Ciencias Sociales (UNLP-CONICET); Argentina.

Variaciones sobre la forma escolar. Límites y posibilidades de la escuela media. Guillermina Tiramonti (dir.). (2011). Rosario, Argentina: FLACSO y Homo Sapiens, 256 páginas, ISBN: 978-950-808-638-9

Fil: Draghi, María José. Universidad Nacional de La Plata. Facultad de Humanidades y Ciencias de la Educación; Argentina.

Estilos de enseñanza. Sentidos personales y configuraciones de acción tras la semejanza de las palabras. Estela B. Cols (2011). Rosario: Homo Sapiens, 208 páginas, ISBN: 978-950-808-643-3

Fil: Traverso, Olga Viviana. Universidad Nacional de La Plata. Facultad de Humanidades y Ciencias de la Educación. Instituto de Investigaciones en Humanidades y Ciencias Sociales (UNLP-CONICET); Argentina.

Estilos de enseñanza. Sentidos personales y configuraciones de acción tras la semejanza de las palabras. Estela B. Cols (2011). Rosario: Homo Sapiens, 208 páginas, ISBN: 978-950-808-643-3

Fil: Traverso, Olga Viviana. Universidad Nacional de La Plata. Facultad de Humanidades y Ciencias de la Educación. Instituto de Investigaciones en Humanidades y Ciencias Sociales (UNLP-CONICET); Argentina.

Variaciones sobre la forma escolar. Límites y posibilidades de la escuela media. Guillermina Tiramonti (dir.). (2011). Rosario, Argentina: FLACSO y Homo Sapiens, 256 páginas, ISBN: 978-950-808-638-9

Fil: Draghi, María José. Universidad Nacional de La Plata. Facultad de Humanidades y Ciencias de la Educación; Argentina.