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Author : Rebecca L. Poulson
Publisher :
ISBN 13 :
Total Pages : 100 pages
Book Rating : 4.:/5 (89 download)
Download or read book Iron Isotope Variations as Tracers for Iron Geochemical Cycling written by Rebecca L. Poulson and published by . This book was released on 2005 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Clark Johnson
Publisher : Springer Nature
ISBN 13 : 3030338282
Total Pages : 360 pages
Book Rating : 4.0/5 (33 download)
Download or read book Iron Geochemistry: An Isotopic Perspective written by Clark Johnson and published by Springer Nature. This book was released on 2020-01-09 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Author : Franck Poitrasson
Publisher : Springer
ISBN 13 : 9783540784760
Total Pages : 300 pages
Book Rating : 4.7/5 (847 download)
Download or read book Iron Isotopes written by Franck Poitrasson and published by Springer. This book was released on 2012-07-28 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt: There are no books published on this subject yet. Only review articles and review book chapters have been written so far. Perhaps the most comprehensive ones were published in 2004 in the Reviews in Geochemistry and Cosmochemistry series under the title "Geochemistry of non-traditional isotopes". Brian Beard and Clark Johnson wrote two chapters devoted to Fe isotopes. However, because the target was the specialist audience and this field expands so rapidly, this book is already partly outdated.
Author : Kohen W. Bauer
Publisher : Cambridge University Press
ISBN 13 : 1108890563
Total Pages : 34 pages
Book Rating : 4.1/5 (88 download)
Download or read book The Chromium Isotope System as a Tracer of Ocean and Atmosphere Redox written by Kohen W. Bauer and published by Cambridge University Press. This book was released on 2021-02-25 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: The stable chromium (Cr) isotope system has emerged over the past decade as a new tool to track changes in the amount of oxygen in earth's ocean-atmosphere system. Much of the initial foundation for using Cr isotopes (δ53Cr) as a paleoredox proxy has required recent revision. However, the basic idea behind using Cr isotopes as redox tracers is straightforward—the largest isotope fractionations are redox-dependent and occur during partial reduction of Cr(VI). As such, Cr isotopic signatures can provide novel insights into Cr redox cycling in both marine and terrestrial settings. Critically, the Cr isotope system—unlike many other trace metal proxies—can respond to short-term redox perturbations (e.g., on timescales characteristic of Pleistocene glacial-interglacial cycles). The Cr isotope system can also be used to probe the earth's long-term atmospheric oxygenation, pointing towards low but likely dynamic oxygen levels for the majority of Earth's history.
Author : Ricardo Amils
Publisher : Springer
ISBN 13 : 9783642278334
Total Pages : 1853 pages
Book Rating : 4.2/5 (783 download)
Download or read book Encyclopedia of Astrobiology written by Ricardo Amils and published by Springer. This book was released on 2021-01-14 with total page 1853 pages. Available in PDF, EPUB and Kindle. Book excerpt: The interdisciplinary field of Astrobiology constitutes a joint arena where provocative discoveries are coalescing concerning, e.g. the prevalence of exoplanets, the diversity and hardiness of life, and its increasingly likely chances for its emergence. Biologists, astrophysicists, biochemists, geoscientists and space scientists share this exciting mission of revealing the origin and commonality of life in the Universe. The members of the different disciplines are used to their own terminology and technical language. In the interdisciplinary environment many terms either have redundant meanings or are completely unfamiliar to members of other disciplines. The Encyclopedia of Astrobiology serves as the key to a common understanding. Each new or experienced researcher and graduate student in adjacent fields of astrobiology will appreciate this reference work in the quest to understand the big picture. The carefully selected group of active researchers contributing to this work and the expert field editors intend for their contributions, from an internationally comprehensive perspective, to accelerate the interdisciplinary advance of astrobiology.
Author : Roberto Moretti
Publisher : John Wiley & Sons
ISBN 13 : 111947325X
Total Pages : 436 pages
Book Rating : 4.1/5 (194 download)
Download or read book Magma Redox Geochemistry written by Roberto Moretti and published by John Wiley & Sons. This book was released on 2021-10-26 with total page 436 pages. Available in PDF, EPUB and Kindle. Book excerpt: Explores the many facets of redox exchanges that drive magma's behavior and evolution, from the origin of the Earth until today The redox state is one of the master variables behind the Earth's forming processes, which at depth concern magma as the major transport agent. Understanding redox exchanges in magmas is pivotal for reconstructing the history and compositional make-up of our planet, for exploring its mineral resources, and for monitoring and forecasting volcanic activity. Magma Redox Geochemistry describes the multiple facets of redox reactions in the magmatic realm and presents experimental results, theoretical approaches, and unconventional and novel techniques. Volume highlights include: Redox state and oxygen fugacity: so close, so far Redox processes from Earth’s accretion to global geodynamics Redox evolution from the magma source to volcanic emissions Redox characterization of elements and their isotopes The American Geophysical Union promotes discovery in Earth and space science for the benefit of humanity. Its publications disseminate scientific knowledge and provide resources for researchers, students, and professionals.
Author : C. Kendall
Publisher : Elsevier
ISBN 13 : 9780444501554
Total Pages : 874 pages
Book Rating : 4.5/5 (15 download)
Download or read book Isotope Tracers in Catchment Hydrology written by C. Kendall and published by Elsevier. This book was released on 1998 with total page 874 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Isotope Tracers in Catchment Hydrology" is the first synthesis of physical hydrology and isotope geochemistry with a catchment focus, and is a valuable reference for professionals and students alike in the fields of hydrology, hydrochemistry, and environmental science.
Author : Alex Joseph Hammerstrom
Publisher :
ISBN 13 :
Total Pages : 162 pages
Book Rating : 4.:/5 (111 download)
Download or read book IRON ISOTOPE GEOCHEMISTRY OF BULK ROCKS AND Fe-Ti OXIDES FROM THE SKAERGAARD LAYERED MAFIC INTRUSION, SE GREENLAND. written by Alex Joseph Hammerstrom and published by . This book was released on 2019 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt: Small, but significant fractionation of Fe isotopes occurs in high-temperature igneous rocks. Despite increasing study, the exact causes of this fractionation are still debated. Therefore, a systematic study of a complete igneous intrusive system is presented to evaluate the extent and causes of Fe isotope fractionation. The Eocene Skaergaard layered mafic intrusion, SE Greenland has a relatively simple magmatic history and localized superimposed alteration, which makes it a good setting to study Fe isotope fractionation. High-precision Fe isotope compositions ([delta]Fe56, relative to igneous rocks, in ‰) are presented for bulk rocks and bulk Fe-Ti oxides (magnetite-ilmenite) from a suite of 26 gabbros and ferrodiorites that encompasses the magmatic/alteration history of the Skaergaard intrusion. The [delta]Fe56 values of bulk rocks differ only by 0.074‰ (-0.043±0.013‰ to +0.031±0.027; avg. = -0.007±0.012‰, 2-SE; n = 11) and show a lack of or a slight variation with magmatic evolution as measured by plagioclase compositions and bulk-rock geochemistry. These bulk-rock [delta]Fe56 values remain within the 2-SE of the average mafic-intermediate composition of the Earth's crust (0.00±0.08‰ ). The lack of clear measurable trends in [delta]Fe56 values of Skaergaard bulk rocks as a function of magmatic evolution outside of analytical error is consistent with data from other mafic and ultramafic intrusions in that [delta]Fe56 values do not vary as much as in high-silica igneous rocks. In contrast, [delta]Fe56 values of Fe-Ti oxides throughout the evolution vary significantly, up to 0.69‰ (-0.179±0.010‰ to +0.508±0.012‰ , 2-SE; n = 26). A positive correlation between [delta]Fe56 values and Fe3+:Fe2+ ratios for bulk Fe-Ti oxides shows that their Fe isotope compositions are controlled by their Fe3+:Fe2+ ratio. Similar trends of [delta]Fe56 variations in Fe-Ti oxides and previously modeled fO2 values through the Layered Series seem to suggest that Fe isotope fractionation in Fe-Ti oxides may be driven by redox changes of the magma, but this is not seen in bulk rocks. The removal of iron via partial or complete magnetite dissolution by hydrothermal fluids may account for Fe isotope variations in bulk Fe-Ti oxides from highly altered rocks. Secondary minerals, not analyzed but replacing altered Fe-Ti oxides, likely have the light Fe isotopes removed from magnetite that results in high [delta]Fe56 values, and this difference can explain why altered and fresh bulk rocks do not differ in [delta]Fe56 values. Compared to the average Fe isotope composition of the Earth's mantle and chondritic meteorites, the average [delta]Fe56 value of Skaergaard bulk rocks is higher by 0.053‰ and 0.081‰, respectively. The higher [delta]Fe56 average of Skaergaard rocks is similar to that of terrestrial basalts, which record an average [delta]Fe56 value (+0.006±0.007‰ ) ~ 0.07‰ higher than mantle values. Further detailed Fe isotope studies of large mafic igneous intrusions will help better understand the mechanisms that produce the observed differences in [delta]Fe56 values between terrestrial mafic rocks and those of other planetary bodies.
Author : Morgan J. Herrick
Publisher :
ISBN 13 :
Total Pages : 164 pages
Book Rating : 4.:/5 (89 download)
Download or read book Isotopic Studies of the 3.7-3.8 Ga ISUA Banded Iron Formation Provide Insight Into Early Archean Geochemical Cycles written by Morgan J. Herrick and published by . This book was released on 2007 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Fang-Zhen Teng
Publisher : Walter de Gruyter GmbH & Co KG
ISBN 13 : 3110545632
Total Pages : 902 pages
Book Rating : 4.1/5 (15 download)
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.
Author : Jochen Hoefs
Publisher : Springer
ISBN 13 : 3319785273
Total Pages : 460 pages
Book Rating : 4.3/5 (197 download)
Download or read book Stable Isotope Geochemistry written by Jochen Hoefs and published by Springer. This book was released on 2018-05-05 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt: This classic textbook is an introduction to the systematics and the use of stable isotopes in geosciences. 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. Since the publication of the previous edition advances in multicollector-ICP-mass-spectrometry allow precise measurements of new isotope systems. In this new edition therefore, 42 elements with resolvable natural variations in isotope composition are discussed. New findings from non-traditional isotope systems have been incorporated. Many new references have been added, which enable quick access to recent literature.
Author : Aaron Isaac Shultis
Publisher :
ISBN 13 :
Total Pages : 218 pages
Book Rating : 4.:/5 (89 download)
Download or read book An Iron Isotope Study of Inter-mineral Fractionations in Mantle Derived Rocks written by Aaron Isaac Shultis and published by . This book was released on 2006 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Bingjie Shi
Publisher :
ISBN 13 :
Total Pages : 157 pages
Book Rating : 4.:/5 (18 download)
Download or read book Tracing Redox Cycles During Microbe-clay Interactions Using Stable Iron Isotopes written by Bingjie Shi and published by . This book was released on 2018 with total page 157 pages. Available in PDF, EPUB and Kindle. Book excerpt: Iron redox cycling, especially Fe(III) reduction, is mostly driven by microbial activity in the shallow subsurface. A wide range of bacteria, archaea, and fungi reduce Fe(III) to acquire energy with soil organic compounds as the electron donors. Iron isotope signatures in ancient rocks (3.1-2.4 Ga) associated with dissimilatory Fe reduction (DIR) have been interpreted in terms of global changes in oceanic redox condition. Iron isotopes have also been used as indicators of redox processes involving Fe minerals such as Fe(III) (oxyhydr)oxides and pyrite. Clay minerals, however, contain approximately the same amount of Fe as all other Fe minerals combined, thereby playing a key role in Fe redox cycling. There have been numerous studies focusing on the mineralogical changes of clays during microbially, chemically, and electrochemically mediated redox cycles, and linking these changes to the bioavailability and reversibility of clay, including processes such as layer collapse, structural Fe migration, and dehydroxylation and water fixation. I used Fe isotopes, for the first time, to trace the redox cycling of clay minerals.
Author : Jeremiah David Owens
Publisher :
ISBN 13 :
Total Pages : 126 pages
Book Rating : 4.3/5 (121 download)
Download or read book An Iron Isotope Record of Ocean-scale Iron Shuttling During OAE 2 written by Jeremiah David Owens and published by . This book was released on 2010 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Pier A. de Groot
Publisher : Elsevier
ISBN 13 : 0080930115
Total Pages : 1399 pages
Book Rating : 4.0/5 (89 download)
Download or read book Handbook of Stable Isotope Analytical Techniques Vol II written by Pier A. de Groot and published by Elsevier. This book was released on 2008-11-10 with total page 1399 pages. Available in PDF, EPUB and Kindle. Book excerpt: This two-volume reference serves as a handbook containing a wealth of information for all isotope chemists working in a wide range of disciplines including anthropology to ecology; drug detection methodology to toxicology; nutrition to food science; and the atmospheric sciences to geochemistry.Complementing the first volume, Volume II includes matters that are not strictly confined to the analytical techniques themselves, but relate to analysis of stable isotopes, such as the views on the development of mass spectrometers, isotopic scales, standards and references, and directives for setting up a laboratory.ALSO AVAILABLE:Volume I: Dec. 2004, 0444511148/9780444511140, $176.00Volume I and II (set): Oct. 2007, 0444511164/9780444511164, $205.00 Presents an encyclopedic overview of stable isotope analytical techniques in an objective way Includes descriptions of methods and diagrams of analytical devices Addresses how older techniques formed the basis for present-day techniques, which can be useful in constructing modern analytical systems Completments Volume I of the set
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Author : Ning Sing Shaw
Publisher :
ISBN 13 :
Total Pages : 462 pages
Book Rating : 4.E/5 ( download)
Download or read book A Mass Spectrometric Method for Using Stable Iron Isotpoes [i.e. Isotopes] (54Fe and 57Fe) as Tracers for the Study of Iron Absorption in Humans written by Ning Sing Shaw and published by . This book was released on 1984 with total page 462 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Monika Stelling
Publisher :
ISBN 13 :
Total Pages : 154 pages
Book Rating : 4.:/5 (725 download)
Download or read book Stable Iron Isotope Variations in Higher Plants written by Monika Stelling and published by . This book was released on 2010 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt:
