Evaluation of Evolutionary Models in Planktonic Foraminifera Using Stable Isotopic Analyses PDF Download

Author: Cynthia Elaine Schneider
Publisher:
ISBN:
Category :
Languages : en
Pages : 466

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ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 764

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Author: Katharina Billups
Publisher:
ISBN:
Category :
Languages : en
Pages : 552

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Author:
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 96

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Author: Marcelle BouDagher-Fadel
Publisher: Springer
ISBN: 9789401064668
Category : Science
Languages : en
Pages : 269

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and Acknowledgements This book attempts to describe the earliest known Academy of Sciences). Without their assistance in planktonic foraminifera, of the Jurassic, and to particular, our understanding of the early planktonic portray their evolution into the widespread and foraminifera would have been much the poorer. holoplanktonic taxa of the Early Cretaceous. Much of the SEM photography has been specially prepared for the book by two of the In doing this we estimate we have dealt with over 135 species, belonging to 26 genera. It has authors (M. K. B-F. and J. E. W. ) on the University been our policy to illustrate, with SEM imagery College, London (Zeiss DSM 940) and The Natural History Museum's (Hitachi S 2500) whenever possible, holotypes or other primary types, topotypes and other reliable specimens. To instruments, respectively. Many more illustrations this end, we have been generously helped by many have been digitized from the original negatives micropalaeontologists and other technical workers, held in both those institutions from earlier publi without whose assistance the book could not have cations of the authors and our collaborators been prepared. The systematic taxonomy is our (notably Drs Damini Desai, Phil Copestake, responsibility, however, and we must be blamed Marigold White, Mike Simmons and Tatiana for any errors which may have occurred. Gorbachik), over the last decade.

Author: Susan Elizabeth Alderman
Publisher:
ISBN:
Category :
Languages : en
Pages : 198

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Author: Marcelle K. BouDagher-Fadel
Publisher: UCL Press
ISBN: 1910634263
Category : Science
Languages : en
Pages : 320

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The role of fossil planktonic foraminifera as markers for biostratigraphical zonation and correlation underpins most drilling of marine sedimentary sequences and is key to hydrocarbon exploration. The first - and only - book to synthesise the whole biostratigraphic and geological usefulness of planktonic foraminifera, Biostratigraphic and Geological Significance of Planktonic Foraminifera unifies existing biostratigraphic schemes and provides an improved correlation reflecting regional biogeographies.Renowned micropaleontologist Marcelle K. Boudagher-Fadel presents a comprehensive analysis of existing data on fossil planktonic foraminifera genera and their phylogenetic evolution in time and space. This important text, now in its Second Edition, is in considerable demand and is now being republished by UCL Press.

Author: Gerhard Fischer
Publisher: Springer Science & Business Media
ISBN: 3642586465
Category : Science
Languages : en
Pages : 768

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Paleoceanographic proxies provide infonnation for reconstructions of the past, including climate changes, global and regional oceanography, and the cycles of biochemical components in the ocean. These prox ies are measurable descriptors for desired but unobservable environmental variables such as tempera ture, salinity, primary productivity, nutrient content, or surface-water carbon dioxide concentrations. The proxies are employed in a manner analogous to oceanographic methods. The water masses are first characterized according to their specific physical and chemical properties, and then related to particular assemblages of certain organisms or to particular element or isotope distributions. We have a long-standing series of proven proxies available. Marine microfossil assemblages, for instance, are employed to reconstruct surface-water temperatures. The calcareous shells of planktonic and benthic microorgan isms contain a wealth of paleoceanographic information in their isotopic and elemental compositions. Stable oxygen isotope measurements are used to detennine ice volume, and MglCa ratios are related to water temperatures, to cite a few examples. Organic material may also provide valuable infonnation, e. g. , about past productivity conditions. Studying the stable carbon isotope composition of bulk organic matter or individual marine organic components may provide a measure of past surface-water CO 2 conditions within the bounds of certain assumptions. Within the scope of paleoceanographic investigations, the existing proxies are continuously evolving and improving, while new proxies are being studied and developed. The methodology is improved by analysis of samples from the water column and surface sediments, and through laboratory experiments.

Author: R. N. Hughes
Publisher: CRC Press
ISBN: 1466568674
Category : Science
Languages : en
Pages : 400

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Increasing interest in oceanography and marine biology and its relevance to global environmental issues continues to create a demand for authoritative reviews summarizing recent research. Now in its 51st volume, Oceanography and Marine Biology has addressed this demand for more than 50 years. This annual review considers the basics of marine research, special topics, and emerging new areas. Regarding the marine sciences as a unified field, the text features contributors who are actively engaged in biological, chemical, geological, and physical aspects of marine science. Including color inserts and extensive reference lists, this series is essential for researchers and students in all fields of marine science.

Author: Mark Baskaran
Publisher: Springer Science & Business Media
ISBN: 3642106374
Category : Science
Languages : en
Pages : 944

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Applications of radioactive and stable isotopes have revolutionized our understanding of the Earth and near-earth surface processes. The utility of the isotopes are ever-increasing and our sole focus is to bring out the applications of these isotopes as tracers and chronometers to a wider audience so that they can be used as powerful tools to solve environmental problems. New developments in this field remain mostly in peer-reviewed journal articles and hence our goal is to synthesize these findings for easy reference for students, faculty, regulators in governmental and non-governmental agencies, and environmental companies. While this volume maintains its rigor in terms of its depth of knowledge and quantitative information, it contains the breadth needed for wide variety problems and applications in the environmental sciences. This volume presents all of the newer and older applications of isotopes pertaining to the environmental problems in one place that is readily accessible to readers. This book not only has the depth and rigor that is needed for academia, but it has the breadth and case studies to illustrate the utility of the isotopes in a wide variety of environments (atmosphere, oceans, lakes, rivers and streams, terrestrial environments, and sub-surface environments) and serves a large audience, from students and researchers, regulators in federal, state and local governments, and environmental companies.