Ms. lat. oct. 207 - Annotata ad Burkhardi Gotthelfi Struvii Introductionem ad notitiam rei litterariae et usum bibliothecarum

Vorbesitzer: Familie von Holzhausen

Magnetostratigraphy of ODP Leg 207 sediments

Ocean Drilling Program (ODP) Sites 1257-1261 recovered thick sections of Upper Cretaceous-Eocene oceanic sediments on Demerara Rise off the east coast of Surinam and French Guiana, South America. Paleomagnetic and rock magnetic measurements of ~800 minicores established a high-resolution composite magnetostratigraphy spanning most of the Maastrichtian-Eocene. Magnetic behavior during demagnetization varied among lithologies, but thermal demagnetization steps >200°C were generally successful in removing present-day normal polarity overprints and a downward overprint induced during the ODP coring process. Characteristic remanent magnetizations and associated polarity interpretations were generally assigned to directions observed at 200°-400°C, and the associated polarity interpretations were partially based on whether the characteristic direction was aligned or apparently opposite to the low-temperature "north-directed" overprint. Biostratigraphy and polarity patterns constrained assignment of polarity chrons. The composite sections have a complete polarity record of Chrons C18n (middle Eocene)-C34n (Late Cretaceous).

Enrique D. Dussel: La dialéctica hegeliana. Supuestos y superación o del inicio originario del filosofar. Editorial Ser y Tiempo, Mendoza, 1972; 207 páginas

Fil: Prada, Gloria.

De salones, círculos y cafés : Reseña de : Agulhon, Maurice (2009) El círculo burgués. La sociabilidad en Francia. 1810-1848. Siglo XXI Editores, Buenos Aires. 207 págs.

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