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Partitioning Of Trace Elements And Stable Isotopes Between Calcium Carbonates And Fluid
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Book Synopsis Partitioning of Trace Elements and Stable Isotopes Between Calcium Carbonates and Fluid by : Rinat Gabitov
Download or read book Partitioning of Trace Elements and Stable Isotopes Between Calcium Carbonates and Fluid written by Rinat Gabitov and published by . This book was released on 2005 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Kinetic Isotope and Trace Element Partitioning During Calcite Precipitation from Aqueous Solution by : Laura Christina Nielsen
Download or read book Kinetic Isotope and Trace Element Partitioning During Calcite Precipitation from Aqueous Solution written by Laura Christina Nielsen and published by . This book was released on 2012 with total page 262 pages. Available in PDF, EPUB and Kindle. Book excerpt: Precipitation of carbonate minerals is ubiquitous in the near-surface environment, and the isotopic and trace element composition of carbonates may be used to reconstruct the conditions of growth. Little is known about the mechanisms controlling isotope and trace element distribution into carbonates. Proposed growth mechanisms are typically inferred from the supersaturation dependence of CaCO3 precipitation rates. As different experimental techniques often generate different apparent reaction orders, numerous hypothesized mechanisms can be found in the literature. These descriptions of crystallization pathway cannot be used to identify processes controlling trace element and isotope partitioning. Recent advances in experimental methodology allow us to observe microscopic to nano-scopic structures at the mineral surface during growth. The mechanisms controlling calcite growth have been directly determined by using fluid flow cells placed in an atomic force microscope (AFM; chapter 3). Calcite growth below the threshold oversaturation for amorphous calcium carbonate (ACC) formation - typical of seawater and most terrestrial fluids - occurs primarily through the attachment of ions to kink sites on the surface. The net flux of ions to kink sites governs both overall growth rate and mineral composition. In this thesis, I present a self-consistent model based on observed calcite growth mechanisms that may be used to predict growth rate (chapter 1), and isotopic (chapter 2; Nielsen et al., 2012) and trace element (chapter 5; Nielsen et al., in prep.) partitioning as a function of solution composition. I apply this model to calcium isotope fractionation during the precipitation of synthetic calcite, which I grew and analyzed using novel secondary ion mass spectrometry (SIMS) methods (chapter 3). In chapter chapter 4 (Nielsen and DePaolo, in review), I model calcium isotope fractionation in carbonate minerals that I collected from the highly alkaline Mono Lake, CA. The mechanistic framework developed here may be extended to multicomponent systems, and may be adapted for use in reactive transport models. When interpreted through the lens of this model, trace element and isotope signatures preserved in carbonates may eventually be used to reconstruct the chemistry of natural aqueous fluids.
Author :H. Stoll Publisher :The Mineralogical Society of Great Britain and Ireland ISBN 13 :0903056267 Total Pages :432 pages Book Rating :4.9/5 (3 download)
Book Synopsis Ion Partitioning in Ambient-Temperature Aqueous Systems by : H. Stoll
Download or read book Ion Partitioning in Ambient-Temperature Aqueous Systems written by H. Stoll and published by The Mineralogical Society of Great Britain and Ireland. This book was released on 2010-11-15 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt: Understanding in detail the ion partitioning in mineralwater interactions is of fundamental importance to geochemical studies and ultimately to society. The solid-solution properties of minerals are a significant part of the complexity, and also the importance, of these ion-partitioning reactions.
Book Synopsis Dissertation Abstracts International by :
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2005 with total page 794 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Calcium Stable Isotope Geochemistry by : Nikolaus Gussone
Download or read book Calcium Stable Isotope Geochemistry written by Nikolaus Gussone and published by Springer. This book was released on 2016-05-02 with total page 269 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides an overview of the fundamentals and reference values for Ca stable isotope research, as well as current analytical methodologies including detailed instructions for sample preparation and isotope analysis. As such, it introduces readers to the different fields of application, including low-temperature mineral precipitation and biomineralisation, Earth surface processes and global cycling, high-temperature processes and cosmochemistry, and lastly human studies and biomedical applications. The current state of the art in these major areas is discussed, and open questions and possible future directions are identified. In terms of its depth and coverage, the current work extends and complements the previous reviews of Ca stable isotope geochemistry, addressing the needs of graduate students and advanced researchers who want to familiarize themselves with Ca stable isotope research.
Book Synopsis Using Geochemical Data by : Hugh Rollinson
Download or read book Using Geochemical Data written by Hugh Rollinson and published by Cambridge University Press. This book was released on 2021-05-06 with total page 359 pages. Available in PDF, EPUB and Kindle. Book excerpt: This textbook is a complete rewrite, and expansion of Hugh Rollinson's highly successful 1993 book Using Geochemical Data: Evaluation, Presentation, Interpretation. Rollinson and Pease's new book covers the explosion in geochemical thinking over the past three decades, as new instruments and techniques have come online. It provides a comprehensive overview of how modern geochemical data are used in the understanding of geological and petrological processes. It covers major element, trace element, and radiogenic and stable isotope geochemistry. It explains the potential of many geochemical techniques, provides examples of their application, and emphasizes how to interpret the resulting data. Additional topics covered include the critical statistical analysis of geochemical data, current geochemical techniques, effective display of geochemical data, and the application of data in problem solving and identifying petrogenetic processes within a geological context. It will be invaluable for all graduate students, researchers, and professionals using geochemical techniques.
Book Synopsis The Biogeochemistry of Particulate Trace Elements and Isotopes in the North Atlantic Ocean by : Pamela M. Barrett
Download or read book The Biogeochemistry of Particulate Trace Elements and Isotopes in the North Atlantic Ocean written by Pamela M. Barrett and published by . This book was released on 2015 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt: The distributions and bioavailability of trace metals and their isotopes are strongly controlled by partitioning between the dissolved phase and suspended and sinking biotic and abiotic particles. This work presents new particulate trace element data from CLIVAR section A16N in the North Atlantic collected during two occupations in 2003 and 2013. ED-XRF methods were adapted for trace element analysis of marine suspended particulate matter at sub-nanomolar concentrations. Paired analyses of particulate Al, P, Ca, V, Mn, Fe, Ni, Cu, Zn, and Pb concentrations using samples collected from the upper water column in the Atlantic and Pacific Oceans show that ED-XRF and HR ICP-MS methods produce comparable data for many trace elements of oceanographic interest. By quantifying changes in the concentrations of subsurface particulate Al and Fe and mixed-layer dissolved Al in the equatorial North Atlantic, we estimate dust deposition to surface waters in the eastern North Atlantic increased by approximately 15% between 2003 and 2013. Increased concentrations of dissolved Al in subtropical mode waters suggest that dust deposition may have also increased in the western basin. Particulate calcium distributions and total alkalinity measurements along A16N in 2003 and 2013 were used to estimate shallow-water carbonate dissolution. In the tropical North Atlantic, water masses at intermediate depths were undersaturated with respect to aragonite. Carbonate dissolution rates were estimated to be 0.7-0.9 mmol m-2 d-1, indicating this region is a hotspot for shallow carbonate dissolution in the Atlantic basin. Finally, the enriched [delta]65Cu of particulate matter samples suggests that adsorptive and passive scavenging processes likely dominate the fractionation of Cu stable isotopes in the upper ocean and result in isotopically heavy particulate Cu. Incorporating this new data into an isotopic mass balance for Cu in the surface ocean, we estimate an atmospheric flux of 1.2 x 108 mol Cu yr-1 to the surface ocean and a particle export flux from the base of the mixed layer of 2.6 x 109 mol Cu yr-1.
Book Synopsis Tracking Environmental Change Using Lake Sediments by : William M. Last
Download or read book Tracking Environmental Change Using Lake Sediments written by William M. Last and published by Springer Science & Business Media. This book was released on 2006-04-11 with total page 532 pages. Available in PDF, EPUB and Kindle. Book excerpt: Theory Instrumentation NIR analysis of sediment samples Uses of NIRS in palaeolimnology Future perspectives Summary References Fly-ash particles. Neil Rose 319 12. Introduction A brief history Methods of extraction and enumeration Temporal distribution Spatial distribution Source apportionment The future Summary Acknowledgements References Part III: Stable Isotope Techniques 13. Application of stable isotope techniques to inorganic and biogenic carbonates. Emi Ito 351 Introduction Nomenclature and systematics of lake-water Mg/Ca and Sr/Ca ratios of lake-water of dissolved inorganic carbon (DIC) Carbonates in lake-sediments Mollusks Ostracodes Charaphytes Isotope analysis Preparation of carbonate samples for isotope analysis Conclusions Summary Acknowledgments References 14. Carbon and oxygen isotope analysis of lake sediment cellulose: methods and applications. Brent B. Wolfe, Thomas W. D. Edwards, Richard J. Elgood & Kristina R. M. Beuning 373 xi Introduction Stable isotope tracers in lake Historical development Methods Key criteria for paleohydrologic reconstruction Applications Future research directions Summary Acknowledgements References Nitrogen isotopes in palaeolimnology. Michael R. Talbot 15. 401 Introduction Nitrogen in lakes: forms and distribution Nitrogen isotopes Nitrogen isotope studies in palaeolimnology: sampling and measurement Some examples Closing remarks Summary Acknowledgments References Glossary, acronyms and abbreviations 441 Index 493 xiii PREFACE The explosive growth of paleolimnology over the past two decades has provided impetus for the publication of this series of monographs detailing the numerous advances and new techniques being applied to the interpretation of lake histories. This is the second volume in the series and deals mainly with physical and geochemical analytical techniques.
Book Synopsis Ostracoda as Proxies for Quaternary Climate Change by :
Download or read book Ostracoda as Proxies for Quaternary Climate Change written by and published by Newnes. This book was released on 2012-12-31 with total page 379 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ostracod crustaceans, common microfossils in marine and freshwater sedimentary records, supply evidence of past climatic conditions via indicator species, transfer function and mutual climatic range approaches as well as the trace element and stable isotope geochemistry of their shells. As methods of using ostracods as Quaternary palaeoclimate proxies have developed, so too has a critical awareness of their complexities, potential and limitations. This book combines up-to-date reviews (covering previous work and summarising the state of the art) with presentations of new, cutting-edge science (data and interpretations as well as methodological developments) to form a major reference work that will constitute a durable bench-mark in the science of Ostracoda and Quaternary climate change. - In-depth and focused treatment of palaeoclimate applications - Provides durable benchmark and guide for all future work on ostracods - Presents new, cutting-edge science
Book Synopsis Boron Proxies in Paleoceanography and Paleoclimatology by : Bärbel Hönisch
Download or read book Boron Proxies in Paleoceanography and Paleoclimatology written by Bärbel Hönisch and published by John Wiley & Sons. This book was released on 2019-05-13 with total page 241 pages. Available in PDF, EPUB and Kindle. Book excerpt: Anthropogenic carbon dioxide emissions do not only warm our planet but also acidify our oceans. It is currently unclear to which degree Earth’s climate and marine life will be impacted by these changes but information from Earth history, particularly the geochemical signals of past environmental changes stored in the fossil remains of marine organisms, can help us predict possible future changes. This book aims to be a primer for scientists who seek to apply boron proxies in marine carbonates to estimate past seawater carbonate chemistry and atmospheric pCO2. Boron proxies (δ11B and B/Ca) were introduced nearly three decades ago, with subsequent strides being made in understanding their mechanistic functioning. This text reviews current knowledge about the aqueous systematics, the inorganic and biological controls on boron isotope fractionation and incorporation into marine carbonates, as well as the analytical techniques for measurement of boron proxies. Laboratory and field calibrations of the boron proxies are summarized, and similarities between modern calibrations are explored to suggest estimates for proxy sensitivities in marine calcifiers that are now extinct. Example applications illustrate the potential for reconstructing paleo-atmospheric pCO2 from boron isotopes. Also explored are the sensitivity of paleo-ocean acidity and pCO2 reconstructions to boron isotope proxy systematics that are currently less well understood, including the elemental and boron isotopic composition of seawater through time, seawater alkalinity, temperature and salinity, and their collective impact on the uncertainty of paleo-reconstructions. The B/Ca proxy is based on the same mechanistic principles as the boron isotope proxy, but empirical calibrations suggest seawater pH is not the only controlling factor. B/Ca therefore has the potential to provide a second carbonate parameter that could be paired with δ11B to fully constrain the ocean carbonate system, but the associated uncertainties are large. This text reviews and examines what is currently known about the B/Ca proxy systematics. As more scientists embark on characterizing past ocean acidity and atmospheric pCO2, Boron in Paleoceanography and Paleoclimatology provides a resource to introduce geoscientists to the opportunities and complications of boron proxies, including potential avenues to further refine them.
Book Synopsis Non-Traditional Stable Isotopes by : Fang-Zhen Teng
Download or read book Non-Traditional Stable Isotopes written by Fang-Zhen Teng and published by Walter de Gruyter GmbH & Co KG. This book was released on 2017-03-06 with total page 902 pages. Available in PDF, EPUB and Kindle. Book excerpt: The development of multi-collector inductively coupled plasma mass spectrometry (MC-ICPMS) makes it possible to precisely measure non-traditional stable isotopes. This volume reviews the current status of non-traditional isotope geochemistry from analytical, theoretical, and experimental approaches to analysis of natural samples. In particular, important applications to cosmochemistry, high-temperature geochemistry, low-temperature geochemistry, and geobiology are discussed. This volume provides the most comprehensive review on non-traditional isotope geochemistry for students and researchers who are interested in both the theory and applications of non-traditional stable isotope geochemistry.
Book Synopsis Stable Isotope Geochemistry by : Jochen Hoefs
Download or read book Stable Isotope Geochemistry written by Jochen Hoefs and published by Springer. This book was released on 2015-07-09 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt: Stable Isotope Geochemistry is an introduction to the use of stable isotopes in the geosciences. For students and scientists alike the book will be a primary source of information with regard to how and where stable isotopes can be used to solve geological problems. It is subdivided into three parts: i) theoretical and experimental principles, ii) fractionation processes of light and heavy elements, iii) the natural variations of geologically important reservoirs. In the last decade, major advances in multicollector-ICP-mass-spectrometry enable the precise determination of a wide range of transition and heavy elements. Progress in analysing the rare isotopes of certain elements allows the distinction between mass-dependent and mass-independent fractionations. These major advances in analytical techniques make an extended new edition necessary. Special emphasis has been given to the growing field of “non-traditional” isotope systems. Many new references have been added, which will enable quick access to recent literature.
Book Synopsis Pore Scale Geochemical Processes by : Carl Steefel
Download or read book Pore Scale Geochemical Processes written by Carl Steefel and published by Walter de Gruyter GmbH & Co KG. This book was released on 2015-09-25 with total page 496 pages. Available in PDF, EPUB and Kindle. Book excerpt: This RiMG (Reviews in Mineralogy & Geochemistry) volume includes contributions that review experimental, characterization, and modeling advances in our understanding of pore-scale geochemical processes. The volume had its origins in a special theme session at the 2015 Goldschmidt Conference in Prague. From a diversity of pore-scale topics that ranged from multi-scale characterization to modeling, this work summarizes the state-of-the-science in this subject. Topics include: modification of thermodynamics and kinetics in small pores. chemo-mechanical processes and how they affect porosity evolution in geological media. small angle neutron scattering (SANS) techniques. how isotopic gradients across fluid–mineral boundaries can develop and how these provide insight into pore-scale processes. Information on an important class of models referred to as "pore network" and much more. The material in this book is accessible for graduate students, researchers, and professionals in the earth, material, environmental, hydrological, and biological sciences. The pore scale is readily recognizable to geochemists, and yet in the past it has not received a great deal of attention as a distinct scale or environment that is associated with its own set of questions and challenges. Is the pore scale merely an environment in which smaller scale (molecular) processes aggregate, or are there emergent phenomena unique to this scale? Is it simply a finer-grained version of the "continuum" scale that is addressed in larger-scale models and interpretations? The scale is important because it accounts for the pore architecture within which such diverse processes as multi-mineral reaction networks, microbial community interaction, and transport play out, giving rise to new geochemical behavior that might not be understood or predicted by considering smaller or larger scales alone.
Book Synopsis Bridging the Gap Between Policy and Science in Assessing the Health Status of Marine Ecosystems, 2nd Edition by : Angel Borja
Download or read book Bridging the Gap Between Policy and Science in Assessing the Health Status of Marine Ecosystems, 2nd Edition written by Angel Borja and published by Frontiers Media SA. This book was released on 2017-03-22 with total page 548 pages. Available in PDF, EPUB and Kindle. Book excerpt: Marine management requires approaches which bring together the best research from the natural and social sciences. It requires stakeholders to be well-informed by science and to work across administrative and geographical boundaries, a feature especially important in the inter-connected marine environment. Marine management must ensure that the natural structure and functioning of ecosystems is maintained to provide ecosystem services. Once those marine ecosystem services have been created, they deliver societal goods as long as society inputs its skills, time, money and energy to gather those benefits. However, if societal goods and benefits are to be limitless, society requires appropriate administrative, legal and management mechanisms to ensure that the use of such benefits do not impact on environmental quality, but instead support its sustainable use.
Book Synopsis Stable Isotope and Trace Element Studies in Carbonate Diagenesis by : James D. Marshall
Download or read book Stable Isotope and Trace Element Studies in Carbonate Diagenesis written by James D. Marshall and published by . This book was released on 1979 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Biomineralization by : Patricia M. Dove
Download or read book Biomineralization written by Patricia M. Dove and published by Walter de Gruyter GmbH & Co KG. This book was released on 2018-12-17 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt: Volume 54 of Reviews in Mineralogy and Geochemistry focuses upon the various processes by which organisms direct the formation of minerals. Our framework of examining biominerals from the viewpoints of major mineralization strategies distinguishes this volume from most previous reviews. The review begins by introducing the reader to over-arching principles that are needed to investigate biomineralization phenomena and shows the current state of knowledge regarding the major approaches to mineralization that organisms have developed over the course of Earth history. By exploring the complexities that underlie the "synthesis" of biogenic materials, and therefore the basis for how compositions and structures of biominerals are mediated (or not), we believe this volume will be instrumental in propelling studies of biomineralization to a new level of research questions that are grounded in an understanding of the underlying biological phenomena.
Author :Philip A. E. Pogge von Strandmann Publisher :Cambridge University Press ISBN 13 :1108997627 Total Pages :51 pages Book Rating :4.1/5 (89 download)
Book Synopsis Lithium Isotopes by : Philip A. E. Pogge von Strandmann
Download or read book Lithium Isotopes written by Philip A. E. Pogge von Strandmann and published by Cambridge University Press. This book was released on 2021-08-26 with total page 51 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lithium isotopes are a relatively novel tracer of present and past silicate weathering processes. Given that silicate weathering is the primary long-term method by which CO2 is removed from the atmosphere, Li isotope research is going through an exciting phase. We show the weathering processes that fractionate dissolved and sedimentary Li isotope ratios, focusing on weathering intensity and clay formation. We then discuss the carbonate and silicate archive potential of past seawater δ7Li. These archives have been used to examine Li isotope changes across both short and long timescales. The former can demonstrate the rates at which the climate is stabilised from perturbations via weathering, a fundamental piece of the puzzle of the long-term carbon cycle.
