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Advances in Lithium Isotope Geochemistry
This work summarizes the historical progression of the field of lithium (Li) isotope studies and provides a comprehensive yet succinct overview of the research applications toward which they have been directed. In synthesizing the historical and current research, the volume also suggests prospective future directions of study. Not even a full decade has passed since the publication of a broadly inclusive summary of Li isotope research around the globe (Tomascak, 2004). In this short time, the use of this isotope system in the investigation of geo- and cosmochemical questions has increased dramatically, due, in part, to the advent of new analytical technology at the end of the last millennium. Lithium, as a light element that forms low-charge, moderate-sized ions, manifests a number of chemical properties that make its stable isotope system useful in a wide array of geo- and cosmochemical research fields.
Diffusion in Minerals and Melts
Volume 72 of Reviews in Mineralogy and Geochemistry represents an extensive compilation of the material presented by the invited speakers at a short course on Diffusion in Minerals and Melts held prior (December 11-12, 2010) to the Annual fall meeting of the American Geophysical Union in San Francisco, California. The short course was held at the Napa Valley Marriott Hotel and Spa in Napa, California and was sponsored by the Mineralogical Society of America and the Geochemical Society.
Minerals, Inclusions And Volcanic Processes
Volume 69 of Reviews in Mineralogy and Geochemistry covers the fundamental issues of volcanology: At what depths are eruptions triggered, and over what time scales? Where and why do magmas coalesce before ascent? If magmas stagnate for thousands of years, what forces are responsible for initiating final ascent, or the degassing processes that accelerate upward motion? To the extent that we can answer these questions, we move towards formulating tests of mechanistic models of volcanic eruptions (e.g., Wilson, 1980; Slezin, 2003; Scandone et al., 2007), and hypotheses of the tectonic controls on magma transport (e.g., ten Brink and Brocher, 1987; Takada, 1994; Putirka and Busby, 2007). Our goal, in part, is to review how minerals can be used to understand volcanic systems and the processes that shape them; we also hope that this work will spur new and integrated studies of volcanic systems.
Petrochronology
Petrochronology is a rapidly emerging branch of Earth science that links time (ages or rates) with specific rock-forming processes and their physical conditions. It is founded in petrology and geochemistry, which define a petrogenetic context or delimit a specific process, to which chronometric data are then linked. This combination informs Earth’s petrogenetic processes better than petrology or geochronology alone. This volume and the accompanying short courses address three broad categories of inquiry. Conceptual approaches chapters include petrologic modeling of multi-component chemical and mineralogic systems, and development of methods that include diffusive alteration of mineral chem...
Der Kompass der CDU
Petra Hemmelmann zeichnet die inhaltlichen Leitlinien der Partei CDU seit ihrer Gründung bis in die Gegenwart nach. Erstmals wird eine flächendeckende Inhaltsanalyse aller Wahl- und Grundsatzprogramme vorgelegt, die zudem die unvermeidliche Spannung von Programmatik und praktischer Politik berücksichtigt. Die Untersuchung identifiziert den Markenkern der deutschen Christdemokratie und prüft insbesondere die Entwicklung des programmatischen Profils unter der Parteivorsitzenden Angela Merkel. Ob nämlich Atomausstieg, Aussetzung der Wehrpflicht oder Einführung des Mindestlohns: Mehrere von ihr als Kanzlerin verantwortete Entscheidungen scheinen der traditionellen CDU-Programmatik auf den ersten Blick entgegenzustehen. Den Vorwurf vieler Kritiker, die CDU unter Merkel sei profil- und richtungslos, kann die vorliegende Untersuchung jedoch in Bezug auf die rhetorische Selbstdarstellung in Parteiprogrammen klar widerlegen.
Iron Geochemistry: An Isotopic Perspective
This book provides a comprehensive summary of research to date in the field of stable iron isotope geochemistry. Since research began in this field 20 years ago, the field has grown to become one of the major research fields in "non-traditional" stable isotope geochemistry. This book reviews all aspects of the field, from low-temperature to high-temperature processes, biological processes, and cosmochemical processes. It provides a detailed history and state-of-the art summary about analytical methods to determine Fe-isotope ratios and discusses analytical and sample prospects.
Vernetzte Energiesicherheit
Damit es in Zukunft in deutschen Wohnzimmern nicht kalt wird, braucht Deutschland langfristige, strategische Leitlinien für eine saubere, zuverlässige und bezahlbare Energieversorgung, die v.a. geostrategischen Versorgungsaspekten ganzheitlich und umfassend Rechnung tragen. "Vernetzte Energiesicherheit" ist ein ganzheitlicher und integrierter Ansatz, der die Elemente einer ökonomisch, ökologisch und sozial dauerhaft tragfähigen Entwicklung vereint und damit den gegenwärtigen und zukünftigen Herausforderungen kompetent begegnet. Die Kernfähigkeit einer solchen wirkungsorientierten und wirkungsmächtigen Energiesicherheitspolitik ist ein übergeordneter Entscheidungsprozess, der - gestützt auf ein Netzwerk staatlicher und nicht-staatlicher Kompetenzen, Fähigkeiten, Instrumente, Ressourcen und Kapazitäten - diejenigen Mittel einsetzt, die am besten geeignet sind, die vorab klar definierten energiepolitischen Ziele zu erreichen.
