Download or read book Barium Isotopes written by Tristan J. Horner and published by Cambridge University Press. This book was released on 2021-04-30 with total page 75 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the modern marine environment, barium isotope (δ138Ba) variations are primarily driven by barite cycling-barite incorporates 'light' Ba isotopes from solution, rendering the residual Ba reservoir enriched in 'heavy' Ba isotopes by a complementary amount. Since the processes of barite precipitation and dissolution are vertically segregated and spatially heterogeneous, barite cycling drives systematic variations in the barium isotope composition of seawater and sediments. This Element examines these variations; evaluates their global, regional, local, and geological controls; and, explores how δ138Ba can be exploited to constrain the origin of enigmatic sedimentary sulfates and to study marine biogeochemistry over Earth's history.

Download or read book Pelagic Barite written by Weiqi Yao and published by Cambridge University Press. This book was released on 2021-01-28 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reconstruction of ocean paleoproductivity and paleochemistry is paramount to understanding global biogeochemical cycles such as the carbon, oxygen and sulfur cycles and the responses of these cycles to changes in climate and tectonics. Paleo-reconstruction involves the application of various tracers that record seawater compositions, which in turn may be used to infer oceanic processes. Several important tracers are incorporated into pelagic barite, an authigenic mineral that forms in the water column. Here we summarize the utility of pelagic barite for the reconstruction of export production and as a recorder of seawater S, O, Sr, Ca and Ba.

Download or read book Energy information data base written by United States. Dept. of Energy. Technical Information Center and published by . This book was released on 1979 with total page 868 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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.

Download or read book Subject Headings Used in the Catalogs of the United States Atomic Energy Commission written by and published by . This book was released on 1969 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Subject Headings Used in the Catalogs of the United States Atomic Energy Commission written by U.S. Atomic Energy Commission and published by . This book was released on 1966 with total page 346 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Subject Headings Used by the USAEC Technical Information Service written by U.S. Atomic Energy Commission and published by . This book was released on 1960 with total page 498 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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.

Download or read book NASA Thesaurus written by and published by . This book was released on 1988 with total page 882 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1972 with total page 940 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book X Ray Contrast Media written by Ulrich Speck and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: Short presentation of aspects important for the application of X-ray contrast media: Composition and properties of contrast media, handling with respect to stability, purity and sterility; applications, interaction, risks; drugs for prophylaxis and treatment of side effects.

Download or read book Contrast Media written by Henrik S. Thomsen and published by Springer Science & Business Media. This book was released on 2009-03-23 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: This revised edition of Contrast Media: Safety Issues and Guidelines, updates the successful first edition and contains new chapters. It provides an invaluable, unique and unparalleled source of information on the safety issues relating to contrast media.

Download or read book Subject Headings Used by the USAEC Division of Technical Information written by U.S. Atomic Energy Commission and published by . This book was released on 1969 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Geochemistry of Stable Chlorine and Bromine Isotopes written by Hans Eggenkamp and published by Springer. This book was released on 2014-08-25 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides detailed information on the history, analysis and applications of chlorine and bromine isotope geochemistry. Chlorine and bromine are geochemically unique as they prefer to exist as single charged negative ions. For this reason isotope fractionation reflects mostly processes that are not related to changes in the redox state and this fractionation is generally modest. The book will describe the processes that are most easily detected using these isotopes. Also isotope variations, and processes that cause them, measured in oxidised species such as perchlorates and in organic molecules will be described in this book.

Download or read book ASTIA Subject Headings written by Defense Documentation Center (U.S.) and published by . This book was released on 1959 with total page 780 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book INIS Reference Series written by and published by . This book was released on 1980 with total page 756 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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.