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The Pyrite Trace Element Paleo-Ocean Chemistry Proxy

The Pyrite Trace Element Paleo-Ocean Chemistry Proxy PDF Author: Daniel D. Gregory
Publisher: Cambridge University Press
ISBN: 110884751X
Category : Science
Languages : en
Pages : 44

Book Description
The use of the trace element content of sedimentary pyrite as a proxy for the trace element composition of past oceans has recently emerged. The pyrite proxy has several potential advantages over bulk sample analysis: preservation through metamorphism; little dilution during analysis (samples are ablated not dissolved, allowing for the less abundant elements commonly held in the sulfide fraction to be investigated as proxies); accurate measurement of several elements simultaneously; the ability to screen sediments for hydrothermal overprint; and the technique can give information regarding trace element availably at multiple stages of diagenesis. Because of these multiple strengths, the pyrite trace element proxy is a valuable potential addition to the paleo-ocean chemistry tool kit.

The Pyrite Trace Element Paleo-Ocean Chemistry Proxy

The Pyrite Trace Element Paleo-Ocean Chemistry Proxy PDF Author: Daniel D. Gregory
Publisher: Cambridge University Press
ISBN: 110884751X
Category : Science
Languages : en
Pages : 44

Book Description
The use of the trace element content of sedimentary pyrite as a proxy for the trace element composition of past oceans has recently emerged. The pyrite proxy has several potential advantages over bulk sample analysis: preservation through metamorphism; little dilution during analysis (samples are ablated not dissolved, allowing for the less abundant elements commonly held in the sulfide fraction to be investigated as proxies); accurate measurement of several elements simultaneously; the ability to screen sediments for hydrothermal overprint; and the technique can give information regarding trace element availably at multiple stages of diagenesis. Because of these multiple strengths, the pyrite trace element proxy is a valuable potential addition to the paleo-ocean chemistry tool kit.

The Trace Element Composition of Sedimentary Pyrite

The Trace Element Composition of Sedimentary Pyrite PDF Author: Daniel David Gregory
Publisher:
ISBN:
Category :
Languages : en
Pages : 374

Book Description


Sulfidic Sediments and Sedimentary Rocks

Sulfidic Sediments and Sedimentary Rocks PDF Author: David Rickard
Publisher: Newnes
ISBN: 0080931839
Category : Science
Languages : en
Pages : 813

Book Description
This book deals with sedimentary sulfides which are the most abundant authigenic minerals in sediments. Special emphasis is given to the biogeochemistry that plays such a central role in the formation of sedimentary sulfides. It will be of interest to scientists in a number of disciplines, including geology, microbiology, chemistry and environmental science. The sulfur system is important to environmental scientists considering the present and future effects of pollution and anoxia. The development of the sulfur system – particularly the characteristics of ocean anoxia over the last 200 Ma – is useful in predicting the future fate of the Earth surface system as well as in understanding the past. The biochemistry and microbiology of the sulfur system are key to understanding microbial ecology and the evolution of life. First monograph on sedimentary sulfides, covering the ancient and modern sedimentary sulfide systems Comprehensive, integrating chemistry, microbiology, geology and environmental science All key references are included and discussed

Marine Geochemistry

Marine Geochemistry PDF Author: Horst D. Schulz
Publisher: Springer Science & Business Media
ISBN: 3662042428
Category : Science
Languages : en
Pages : 463

Book Description
A summary of the latest research in this field. The topics comprise the sedimentological examination and physical properties of the sedimentary solid phase, pore water and pore water constituents, organic matter as the driving force of most microbiological processes, biotic and abiotic redox reactions, carbonates and stable isotopes as proxies for paleoclimate reconstruction, metal enrichments in ferromanganese nodules and crusts as well as in hot vents and cold seeps on the seafloor. The current model conceptions lead to the development of different types of computer models, allowing the global mass exchanges between oceans and sediments to be balanced.

The Chemical Evolution of the Atmosphere and Oceans

The Chemical Evolution of the Atmosphere and Oceans PDF Author: Heinrich D. Holland
Publisher: Princeton University Press
ISBN: 9780691023816
Category : Science
Languages : en
Pages : 604

Book Description
In this first full-scale attempt to reconstruct the chemical evolution of the Earth's atmosphere and oceans, Heinrich Holland assembles data from a wide spectrum of fields to trace the history of the ocean-atmosphere system. A pioneer in an increasingly important area of scholarship, he presents a comprehensive treatment of knowledge on this subject, provides an extensive bibliography, and outlines problems and approaches for further research. The first four chapters deal with the turbulent first half billion years of Earth history. The next four chapters, devoted largely to the Earth from 3.9 to 0.6 b.y.b.p., demonstrate that changes in the atmosphere and oceans during this period were not dramatic. The last chapter of the book deals with the Phanerozoic Eon; although the isotopic composition of sulfur and strontium in seawater varied greatly during this period of Earth history, the chemical composition of seawater did not.

Geochemistry of Trace Metals Associated with Sedimentary Pyrite from Anoxic Marine Environments

Geochemistry of Trace Metals Associated with Sedimentary Pyrite from Anoxic Marine Environments PDF Author: Miguel Angel Huerta-Diaz
Publisher:
ISBN:
Category : Marine sediments
Languages : en
Pages : 598

Book Description


Fluid-Fluid Interactions

Fluid-Fluid Interactions PDF Author: Axel Liebscher
Publisher: Walter de Gruyter GmbH & Co KG
ISBN: 1501509403
Category : Science
Languages : en
Pages : 444

Book Description
Volume 65 of Reviews in Mineralogy and Geochemistry attempts to fill this gap and to explicitly focus on the role that co-existing fluids play in the diverse geologic environments. It brings together the previously somewhat detached literature on fluid–fluid interactions in continental, volcanic, submarine and subduction zone environments. It emphasizes that fluid mixing and unmixing are widespread processes that may occur in all geologic environments of the entire crust and upper mantle. Despite different P-T conditions, the fundamental processes are analogous in the different settings.

Chemical Elements in the Environment

Chemical Elements in the Environment PDF Author: Clemens Reimann
Publisher: Springer Science & Business Media
ISBN: 3642720161
Category : Science
Languages : en
Pages : 419

Book Description
How large is the natural variation in concentration of the various elements in different media? How do the oft-cited "World average concentrations" in different media compare with actual analytical data? How low a detection limit do I need to attain if I want to analyse for an element in soils, sediments, water or plants? All these questions and many more can be answered by using this unique reference book. It collates data on the most important properties and uses of all naturally occurring chemical elements. It combines these with data obtained from actual analyses of different sample media (soil, stream sediment, stream water, ground water, plants, human body fluids). This combination of facts and actual data makes this book suitable for learning and teaching applied geochemistry as well.

The Morphology and Trace Element Content of Pyrite Associated with Gold

The Morphology and Trace Element Content of Pyrite Associated with Gold PDF Author: Peter J. MacLean
Publisher:
ISBN:
Category : Gold ores
Languages : en
Pages : 106

Book Description


Mining Massive Data Sets for Security

Mining Massive Data Sets for Security PDF Author: Françoise Fogelman-Soulié
Publisher: IOS Press
ISBN: 1586038982
Category : Computers
Languages : en
Pages : 388

Book Description
The real power for security applications will come from the synergy of academic and commercial research focusing on the specific issue of security. This book is suitable for those interested in understanding the techniques for handling very large data sets and how to apply them in conjunction for solving security issues.