Sedimentary processes : quantification using radionuclides / J. Carroll and I. Lerche.
Contributor(s): Lerche, I. (Ian)Material type: Text; Format: print Series: Radioactivity in the environment ; 5Publisher: Amsterdam ; Boston : Elsevier, 2003Description: x, 272 p. : ill. ; 25 cmISBN: 9780080443003; 0080443001Subject(s): Rocks, Sedimentary -- Analysis | Rocks, Sedimentary -- Analysis -- Case studies | Sediments (Geology) -- Analysis | Sediments (Geology) -- Analysis -- Case studies | Marine sediments -- Analysis | Marine sediments -- Analysis -- Case studies | Radioactive dating | Radioisotopes in geology | Datación radiactiva | Sedimentos marinos | Rocas sedimentariasTambién disponible en versión electrónica. Consulte en Libros y Revistas electrónicas (http://goo.gl/Ygwy4z)
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The advent of radionuclide methods in geochronology has revolutionized our understanding of modern sedimentary processes in aquatic systems. This book examines the principles of the method and its use as a quantitative tool in marine geology, with emphasis on the Pb-210 method. The assumptions and consequences of models and their behaviour are described providing the necessary background to assess the advantages and trade-offs involved when choosing a particular model for application. One of the purposes of this volume is to disentangle the influences of complicating factors, such as sediment flux variations, post-depositional diffusion of radionuclides, and bio-irrigation of sediments, to arrive at sediment ages and to properly assess the attendant data uncertainty. Environmental impacts of chemical, nuclear, or other waste material are of concern in a variety of areas around the world today. A number of relevant examples are included, demonstrating how dating models are useful for determining sources of contaminants and interpreting their influence on the environment.<P> The book is set at a level so that an able student or professional should have no difficulty in following the procedures and methods developed. Each chapter includes case histories showing the strengths and weaknesses of a given procedure with respect to a data example. Included with this volume is the computer source code of a new generation of modelling tools based on inverse numerical analysis techniques. This first generation of the modelling tool is included, along with detailed instructions and examples for its use, in an appendix.
Includes bibliographical references (p. 263-269) and index.
También disponible en versión electrónica. Consulte en Libros y Revistas electrónicas (http://goo.gl/Ygwy4z)
Índice: Part 1 Introduction: non-radioactive dating methods; stable isotopes and other indicators of relative age; radioactive isotope age dating; applications of isotope age dating. Part 2 Radiometric methods: basic procedure; advanced procedures; synthetic tests and results; method comparison; appendix - technical development of SIT method for unmixed sediments. Part 3 Single site studies: lake sediments and 210Pb geochronology; marine sediments and multi-isotope geochronology; Creel Bay and Main Bay, Devil's Lake, North Dakota; discussion and conclusions; appendix - resolution and uncertainty for disentanglemen... Etc.