Download or read book Delta 37 C1 written by Hermanus Gerardus Maria Eggenkamp and published by . This book was released on 1994 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Delta 37Cl written by Hermanus Gerardus Maria Eggenkamp and published by Faculteit Aardwetenschappen Universiteit Utrecht. This book was released on 1994 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt: Met een samenvattning in het nederlands.
Download or read book Evaluation of Archived Water Samples Using Chlorine Isotopic Data Idaho National Engineering and Environmental Laboratory Idaho 1966 93 written by and published by . This book was released on 1998 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Water resources Investigations Report written by and published by . This book was released on 2001 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fluid Origins Paths and Fluid rock Reactions at Convergent Margins Using Halogens Cl Stable Isotopes and Alkali Metals as Geochemical Tracers written by Wei Wei and published by . This book was released on 2007 with total page 165 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aqueous fluids play a major role in the physical and chemical evolution of subduction zone systems and profoundly impact the elemental and isotopic composition of the atmosphere, crust, mantle, and seawater. Chlorine stable isotope ratios [delta]37Cl) and halogen concentrations (e.g. Br/Cl) in pore fluid samples and solid samples from three subduction zones, the Nankai Trough, Costa Rica, and Mariana Forearc, provide critical information on fluid sources, flow paths, and reaction conditions at subduction zones. At the Nankai and Costa Rica subduction zones, the [delta]37Cl values of pore fluids are significantly more negative (up to -7.8 %0, 2o− " 0.3%0) than seawater value (0 %0) and the Br/Cl ratios are higher than seawater value (1.5 x 10−3). Both [delta]37Cl and Br/Cl show lateral seaward evolution along the transects. The data indicate the existence of a deep-sourced fluid, originated from high temperature hydrous mineral formations that preferentially incorporate the heavier Cl isotope (37Cl), but exclude Br. In contrast, the [delta]37Cl values in the pore fluids at the Mariana mud volcanoes range from +0.3 to +1.8 and the Br/Cl ratios are lower than the seawater ratio. The positive [delta]37Cl values in the pore fluid and the high content of Cl with positive]delta]37Cl values (+1.2 to +6.0 %0) in the serpentines, support that the origin of the upwelling pore fluids is the dehydration of the subducting serpentinized crust. These upwelling fluids, together with ridge crest hydrothermal fluids, having [dalta]37Cl of +2.4%0 to +4.1%0, constitute the positive 37Cl fluxes into the ocean that compensate the negative [delta]37Cl fluid flux at subduction zones. In an approach to estimate geochemical fluxes at mid-ocean ridges and subduction zones, hydrothermal experiments were conducted and the alkali metals (Li, K, Rb, and Cs) are used as tracers of fluid-rock reactions. The alkali concentration ratios together with Li isotope ratios may be used as approximate geothermometers. Hence, alkali elements could assist Cl isotopes and halogen concentrations to identify the temperature range and fluid-rock reactions at the fluid source in convergent margins.
Download or read book Issues in Environmental Economics Engineering and Technology 2011 Edition written by and published by ScholarlyEditions. This book was released on 2012-01-09 with total page 823 pages. Available in PDF, EPUB and Kindle. Book excerpt: Issues in Environmental Economics, Engineering, and Technology: 2011 Edition is a ScholarlyEditions™ eBook that delivers timely, authoritative, and comprehensive information about Environmental Economics, Engineering, and Technology. The editors have built Issues in Environmental Economics, Engineering, and Technology: 2011 Edition on the vast information databases of ScholarlyNews.™ You can expect the information about Environmental Economics, Engineering, and Technology in this eBook to be deeper than what you can access anywhere else, as well as consistently reliable, authoritative, informed, and relevant. The content of Issues in Environmental Economics, Engineering, and Technology: 2011 Edition has been produced by the world’s leading scientists, engineers, analysts, research institutions, and companies. All of the content is from peer-reviewed sources, and all of it is written, assembled, and edited by the editors at ScholarlyEditions™ and available exclusively from us. You now have a source you can cite with authority, confidence, and credibility. More information is available at http://www.ScholarlyEditions.com/.
Download or read book Environmental and Low Temperature Geochemistry written by Peter Ryan and published by John Wiley & Sons. This book was released on 2014-05-27 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt: Environmental and Low-Temperature Geochemistry presents conceptual and quantitative principles of geochemistry in order to foster understanding of natural processes at and near the earth’s surface, as well as anthropogenic impacts on the natural environment. It provides the reader with the essentials of concentration, speciation and reactivity of elements in soils, waters, sediments and air, drawing attention to both thermodynamic and kinetic controls. Specific features include: • An introductory chapter that reviews basic chemical principles applied to environmental and low-temperature geochemistry • Explanation and analysis of the importance of minerals in the environment • Principles of aqueous geochemistry • Organic compounds in the environment • The role of microbes in processes such as biomineralization, elemental speciation and reduction-oxidation reactions • Thorough coverage of the fundamentals of important geochemical cycles (C, N, P, S) • Atmospheric chemistry • Soil geochemistry • The roles of stable isotopes in environmental analysis • Radioactive and radiogenic isotopes as environmental tracers and environmental contaminants • Principles and examples of instrumental analysis in environmental geochemistry The text concludes with a case study of surface water and groundwater contamination that includes interactions and reactions of naturally-derived inorganic substances and introduced organic compounds (fuels and solvents), and illustrates the importance of interdisciplinary analysis in environmental geochemistry. Readership: Advanced undergraduate and graduate students studying environmental/low T geochemistry as part of an earth science, environmental science or related program. Additional resources for this book can be found at: www.wiley.com/go/ryan/geochemistry.
Download or read book Mass Spectrometry Handbook written by Mike S. Lee and published by John Wiley & Sons. This book was released on 2012-04-16 with total page 1362 pages. Available in PDF, EPUB and Kindle. Book excerpt: Due to its enormous sensitivity and ease of use, mass spectrometry has grown into the analytical tool of choice in most industries and areas of research. This unique reference provides an extensive library of methods used in mass spectrometry, covering applications of mass spectrometry in fields as diverse as drug discovery, environmental science, forensic science, clinical analysis, polymers, oil composition, doping, cellular research, semiconductor, ceramics, metals and alloys, and homeland security. The book provides the reader with a protocol for the technique described (including sampling methods) and explains why to use a particular method and not others. Essential for MS specialists working in industrial, environmental, and clinical fields.
Download or read book Geochemistry and Origins of Mineralized Waters in the Floridan Aquifer System Northeastern Florida written by G. G. Phelps and published by . This book was released on 2001 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Deciphering Stable Isotope Fractionation delta 13 C Delta 37 Cl During Reductive Dehalogenation of Chlorinated Ethenes written by Daniel Buchner and published by . This book was released on 2015 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Role of Halogens in Terrestrial and Extraterrestrial Geochemical Processes written by Daniel E. Harlov and published by Springer. This book was released on 2018-01-30 with total page 1029 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book summarizes the knowledge and experiences concerning the role of halogens during various geochemical processes, such as diagenesis, ore-formation, magma evolution, metasomatism, mineralization, and metamorphism in the crust and mantle of the Earth. It comprises the role of halogens in other terrestrial worlds like volatile-rich asteroids, Mars, and the ice moons of Jupiter and Saturn. Review chapters outline and expand upon the basis of our current understanding regarding how halogens contribute to the geochemical/geophysical evolution and stability of terrestrial worlds overall.
Download or read book Halogen Chemistry and Stable Chlorine Isotope Composition of Thermal Springs and Arc Lavas Int He Cascade Arc written by Jeffrey Todd Cullen and published by . This book was released on 2013 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt: The stable isotope compositions (chlorine, oxygen, and hydrogen), major anion concentrations, and major/minor cation concentrations of 37 thermal (any spring water with temperature at least 6.5° C above mean ambient air temperature) and mineral springs from the Cascade volcanic arc system were measured in order to better determine chlorine sources within the Cascades hydrothermal systems, and thus place better constraints on halogen flux through the subduction zone. Typically, most subduction zone flux calculations have been limited to the study of the erupted magmas and gases from fumarole vents, yet magmatic discharge through thermal springs may be considerable, particularly those in the often ignored forearc. Additionally, 9 geochemically well characterized lavas from across the Mt. St. Helens/Mt. Adams region of the Cascade arc (Leeman et al. 2001, 2005) were analyzed for their halogen concentrations, as well as their Cl stable isotope composition. Cl concentrations in the thermal springs range from 6 to 13,850 ppm and have [delta]37Cl values that range from -0.1% to + 1.9% (average = +0.8 ± 0.4%; error = ± 0.2%), with no systematic variation along or across the arc. The slightly positive values (~0.0 to +0.9%) may be explained by fluid-rock interaction with underlying lithologic units, such as 37Cl-enriched volcanic sequences, and/or serpentinites or oceanic crust of accreted oceanic terranes. Another process possibly contributing to these positive [delta]37Cl values, particularly those with [delta]37Cl > 1%, is magmatic HCl fractionation during degassing generating an enriched 37Cl vapor which mixes with thermal waters. We cannot completely rule out slab-derived altered oceanic crustal chlorine that has degassed into the springs, although most slab Cl is believed to have already been devolatilized from the slab before reaching sub-arc depths corresponding to longitudes where these springs are located at the surface. Lavas from the Columbia transect across the arc exhibit highest Cl concentrations at the volcanic front compared to the forearc and backarc. Br, like Cl, exhibits highest concentrations along the volcanic front. F and I show a progressive decrease in concentration from forearc to backarc which may demonstrate the putative early surge of fluids/fluid mobile element loss early in subduction at relatively shallow depth. [delta]37Cl values range from -0.1 to +0.8% (error = ± 0.2%) and may reflect a component of assimilation of crustal material, or is derived from an enriched mantle, although we cannot completely rule out some isotopic fractionation and/or slab-derived chlorine.
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1990 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Index of Trademarks Issued from the United States Patent Office written by and published by . This book was released on 1962 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Oskarshamn Site Investigation written by and published by . This book was released on 2005 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Official Gazette of the United States Patent Office written by United States. Patent Office and published by . This book was released on 1958 with total page 1102 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The geochemistry of chlorine isotopes written by H.G.M. Eggenkamp and published by Onderzoek en Beleving. This book was released on 2014-12-07 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The geochemistry of chlorine isotopes" describes Hans Eggenkamp's studies to obtain his PhD degree at Utrecht University. It describes methods to measure stable chlorine isotope variations in different types of natural samples, theoretical fractionation as the result of diffusion and about ten case studies showing chlorine isotope fractionation in natural systems. In these case studies it was discovered that chlorine stable isotopes fractionate only little, although systematically, in processes such as salt precipitation and diffusion. Variations found in natural samples reflect as such in most cases processes that take place within (larger) reservoirs. The main purpose of the project was to develop procedures to measure stable chlorine isotope compositions in different sample types and to study variations therein. The study gives a good overview of the knowledge on stable chlorine isotope geochemistry at the moment of its original publication in 1994.
