973 resultados para 44-388A


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Vorbesitzer: Wilhelm Carl von Rothschild

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Trägerbände: Inc. qu. 975 Bd. 1 und 2; 'Thomas de Aquino: Opuscula 1490'; Vorbesitzer: Dominikanerkloster Frankfurt am Main

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"Society and Value", Vorlesung Chicago 1957, Heft 1: eigene Notizen, 60 Blatt, davon 13 leer, und zusätzlich 6 Blatt; Heft 2: eigene Notizen, 45 Blatt, davon 30 leer, und zusätzlich 8 Blätter. (Enthält auch: "Begriff der Seele seit Leibniz", Vorlesung Sommersemester 1958); "Die Idee der Freiheit" (GS 13, S. 452-514), Vorlesung Wintersemester 1957/58, eigene Notizen, 1 Heft, 45 Blatt, davon 23 leer, und zusätzlich 25 Blätter; Hilmar Tillack: Ausgearbeitete Nachschrift der Vorlesung Max Horkheimers, Typoskript, 58 Blatt;

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Benthic foraminiferal assemblages are a widespread tool to understand changes in organic matter flux and bottom-water oxygenation and their relation to paleoceanographic changes in the Upper Cretaceous oceans. In this study, assemblage data (diversity, total number, and number per species and gram) from Deep Sea Drilling Project (DSDP) Site 390 (Blake Nose, western North Atlantic) were processed for the lower Maastrichtian (Globotruncana falsostuarti - Gansserina gansseri Planktic Foraminiferal Zone). These data document significant changes in nutrient flux to the sea floor as well as bottom-water oxygenation during this time interval. Parallel to the observed changes in the benthic foraminiferal assemblages the number of inoceramid shells decreases, reflecting also a significant increase in bottom-water oxygenation. We speculate, that these data could reflect the onset of a shift from warmer low-latitude to cooler high-latitude deep-water sources. This speculation will predate the major reorganization of the oceanic circulation resulting in a circulation mode similar to today at the Early/Late Maastrichtian boundary by ~1 Ma and therefore improves our understanding of Late Cretaceous paleoceanography.

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