Werner Ehrmann Bücher

This history of the Mesozoic and Cenozoic depositional paleoenvironments of the North Atlantic Ocean is based on a comprehensive analysis of deep-sea drill sites, sediment facies distributions, hiatuses, sediment accumulation rates, and the fluxes of key sediment components. The study evaluates spatial patterns using palinspastic maps that illustrate the paleophysiographic evolution of the zonal North Atlantic across 30 time slices. The depositional history is divided into three major phases: a) Late Jurassic to Early Cretaceous: Clastic terrigenous and biogenic pelagic sediments accumulated rapidly due to highly productive surface waters across the ocean basin. b) Mid to Late Cretaceous to Early Miocene: There was a significant reduction in terrigenous and pelagic biogenic sediment reaching the ocean floor. c) Middle Miocene to Recent: Accumulation rates of biogenic and terrigenous sediments increased dramatically up to Quaternary times, while hiatus formation rates and deep-water circulation intensity appeared to decrease. Paleodepth reconstructions of hiatuses showed maxima in the western North Atlantic at two depth levels (around 5 km and 2.2-4 km) but only one level (1.2-1.8 km) in the eastern basin. Continued sea floor spreading significantly influenced the depositional environment in this ocean.

The early years of the 20th century saw a rapid and vigorous development of the natural sciences and technology in Germany, and the University of Leipzig was involved in this fast moving evolution. The Geophysical Institute was established on January 1, 1913. At that time geophysics and meteorology were considered subsections of physics and geosciences. They were divided into Physics of the Solid Earth (Geophysics), Physics of the Atmosphere (Meteorology), and Physics of the Hydrosphere (Oceanography). The goal of the new Geophysical Institute was the joint treatment of all three scientific branches. This volume outlines the important stages in the history of geophysics and meteorology at the University of Leipzig from the Geophysical Institute in 1913 to the Institute of Geophysics and Geology and the Institute for Meteorology in 2013.

Am 1. Oktober 1911 übergaben Schüler und Freunde an Hermann Credner, in Anerkennung seiner Verdienste, 20.000 Reichsmark als Startkapital für eine Stiftung, die den Namen „Hermann Credner-Stiftung“ führen sollte. Die Stifter verbanden damit die Bitte an Hermann Credner, die Stiftung der Deutschen Geologischen Gesellschaft zu Berlin, der Sie seit 1865 ein ebenso eifriges Mitglied wie ein treuer Freund und Berater waren, zur Verwaltung zu überweisen. Aus den Erträgen der Hermann Credner-Stiftung wurden mittlerweile 61 Hermann Credner-Preise bzw. Stipendien an junge Wissenschaftler/innen vergeben, von denen eine große Anzahl zu Hochschullehrern avancierte. Von den bislang 61 Preisträgern sind am 4.11.201124 nach Leipzig gekommen, um gemeinsam das 100-jährige Bestehen der Hermann Credner-Stiftung zu feiern. Der Band enthält die Kurzfassungen der Vorträge der Credner-Preisträger, an denen man die eindrucksvollen Ergebnisse der Aktivitäten der Stiftung, bzw. ihrer Preisträger ablesen kann.