Local and Global Controls on Carbon Isotope Chemostratigraphy - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Local and Global Controls on Carbon Isotope Chemostratigraphy write by Anne-Sofie Ahm. This book was released on 2022-03-31. Local and Global Controls on Carbon Isotope Chemostratigraphy available in PDF, EPUB and Kindle. Over million-year timescales, the geologic cycling of carbon controls long-term climate and the oxidation of Earth's surface. Inferences about the carbon cycle can be made from time series of carbon isotopic ratios measured from sedimentary rocks. The foundational assumption for carbon isotope chemostratigraphy is that carbon isotope values reflect dissolved inorganic carbon in a well-mixed ocean in equilibrium with the atmosphere. However, when applied to shallow-water platform environments, where most ancient carbonates preserved in the geological record formed, recent research has documented the importance of considering both local variability in surface water chemistry and diagenesis. These findings demonstrate that carbon isotope chemostratigraphy of platform carbonate rarely represent the average carbonate sink or directly records changes in the composition of global seawater. Understanding what causes local variability in shallow-water settings, and what this variability might reveal about global boundary conditions, are vital questions for the next generation of carbon isotope chemostratigraphers.
Carbon Isotope Stratigraphy
Carbon Isotope Stratigraphy - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Carbon Isotope Stratigraphy write by Michael Montenari. This book was released on 2020-10-30. Carbon Isotope Stratigraphy available in PDF, EPUB and Kindle. Carbon Isotope Stratigraphy, Volume Five in the Advances in Sequence Stratigraphy series, covers research in stratigraphic disciplines, including the most recent developments in the geosciences. This fully commissioned review publication aims to foster and convey progress in stratigraphy with its inclusion of a variety of topics, including Carbon isotope stratigraphy - principles and applications, Interpreting Phanerozoic d13C patterns as periodic glacio-eustatic sequences, Stable carbon isotopes in archaeological plant remains, Review of the Upper Ediacaran-Lower Cambrian Detrital Series in Central and North Iberia: NE Africa as possible Source Area, Calibrating d13C and d18O chemostratigraphic correlations across Cambrian strata of SW, and much more. - Contains contributions from leading authorities in the field - Informs and updates on all the latest developments in the field - Aims to foster and convey progress in stratigraphy, including geochronology, magnetostratigraphy, lithostratigraphy, event-stratigraphy, and more
The Anthropocene as a Geological Time Unit
The Anthropocene as a Geological Time Unit - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook The Anthropocene as a Geological Time Unit write by Jan Zalasiewicz. This book was released on 2019-03-07. The Anthropocene as a Geological Time Unit available in PDF, EPUB and Kindle. Reviews the evidence underpinning the Anthropocene as a geological epoch written by the Anthropocene Working Group investigating it. The book discusses ongoing changes to the Earth system within the context of deep geological time, allowing a comparison between the global transition taking place today with major transitions in Earth history.
Sr Isotopes in Seawater
Sr Isotopes in Seawater - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Sr Isotopes in Seawater write by B. Lynn Ingram. This book was released on 2022-03-31. Sr Isotopes in Seawater available in PDF, EPUB and Kindle. Studies of Sr isotopic composition of thousands of samples of marine sediments and fossils have yielded a curve of 87Sr/86Sr versus age for seawater Sr that extends back to 1 billion years. The ratio has fluctuated with large amplitude during this time period, and because the ratio is always uniform in the oceans globally at any one time, it is useful as a stratigraphic correlation and age-dating tool. The ratio also appears to reflect major tectonic and climatic events in Earth history and hence provides clues as to the causes, timing, and consequences of those events. The seawater 87Sr/86Sr ratio is generally high during periods marked by continent-continent collisions, and lower when continental topography is subdued, and seafloor generation rates are high. There is evidence that major shifts in the seawater ratio can be ascribed to specific orogenic events and correlate with large shifts in global climate.
CO2 in Seawater: Equilibrium, Kinetics, Isotopes
CO2 in Seawater: Equilibrium, Kinetics, Isotopes - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook CO2 in Seawater: Equilibrium, Kinetics, Isotopes write by R.E. Zeebe. This book was released on 2001-10-15. CO2 in Seawater: Equilibrium, Kinetics, Isotopes available in PDF, EPUB and Kindle. Carbon dioxide is the most important greenhouse gas after water vapor in the atmosphere of the earth. More than 98% of the carbon of the atmosphere-ocean system is stored in the oceans as dissolved inorganic carbon. The key for understanding critical processes of the marine carbon cycle is a sound knowledge of the seawater carbonate chemistry, including equilibrium and nonequilibrium properties as well as stable isotope fractionation.Presenting the first coherent text describing equilibrium and nonequilibrium properties and stable isotope fractionation among the elements of the carbonate system. This volume presents an overview and a synthesis of these subjects which should be useful for graduate students and researchers in various fields such as biogeochemistry, chemical oceanography, paleoceanography, marine biology, marine chemistry, marine geology, and others.The volume includes an introduction to the equilibrium properties of the carbonate system in which basic concepts such as equilibrium constants, alkalinity, pH scales, and buffering are discussed. It also deals with the nonequilibrium properties of the seawater carbonate chemistry. Whereas principle of chemical kinetics are recapitulated, reaction rates and relaxation times of the carbonate system are considered in details. The book also provides a general introduction to stable isotope fractionation and describes the partitioning of carbon, oxygen, and boron isotopes between the species of the carbonate system. The appendix contains formulas for the equilibrium constants of the carbonate system, mathematical expressions to calculate carbonate system parameters, answers to exercises and more.
