PPT-Stable Isotope Geochemistry II

Lecture 33 Stable Isotopes in the Hydrosphere and Biosphere Isotopic Fractionation in the Hydrosphere δ 18 O in the oceans is nearly constant at 0 However as a consequence of Rayleigh fractionation and temperature dependence of the watervapor fractionation factor the isotopic composition of precipitation varies widely. Chapter 6. Isotope Geochemistry. In isotope geochemistry, our primary interest is not in dating, but using the time-dependent nature of isotope ratios to make inferences about the nature of reservoirs in the Earth and their evolution.. Contaminant Transport (GTX 719). Muravha. . Sedzani. . Elia. (28234422). 2012/05/23. University of Pretoria. 1. Contents. 2012/05/23. University of Pretoria. 2. 1. What is an Eh-pH diagram?. 2. How do we construct an Eh-pH diagram?. March 2014. ALS Group. ALS has an enviable reputation for delivering a quality . service . which includes accurate and timely data, expert support and a culture of safety and innovation. We employ over 11,000 staff worldwide. We operate more than 300 laboratories in over 50 countries across Africa, Asia, Australia, Europe, North America and South America.. A Brave New World?. Graham R Carr. CSIRO Exploration and Mining. June 2013. Outline. Traditional Use of Pb Isotopes in Metallogenic Studies. Exploration Geochemistry – . General Principles. Gossans and Residual Soils. Geochemistry?. Geo (geology, . gaia. ) + chemistry. A field of study dealing geological phenomena and problems with chemical tools and principles. Prerequisites?. Physical geology, . minerlaogy. , petrology, economic geology. Lecture 31 . Mass Dependent Fractionation. . If . a 4‰ fractionation of . δ. 18. O . is observed in a particular sample, what value of . δ. 17. O . do we predict? . We might guess it would ½ as much. . Stable isotopes are used in CCS to look for leakage of CO2 into overlying aquifers or into the surface environment. What are Stable Isotopes. These are isotope that do not decay over time as the radiogenic isotope do.. Lecture 32 . The Antarctic Ice Record. Much subsequent . paleoclimate. effort has focused on . δD. in ice cores from Antarctica and Greenland.. The . Vostok. core from Antarctica went back 400 . ka. Two Methods. Which isotopes?. Binding Energy. What holds an atom together?. Forces of Nature and Atomic Structure:. Band (Island) of Stability. N/Z ratio. Number of stable isotopes. Isotope trends among the elements:. -. with a special view on the need for ISOLDE and other big science facilities. Mikael Jensen. Professor , Applied Nuclear Physics. Hevesy Lab - . Risø. - . Risø. -DTU Campus. Technical University of Denmark . Prosper Zigah. Woods Hole Oceanographic Institution. pzigah@whoi.edu. 1. What are Isotopes. Why care about stable isotopes?. Expressing Isotopic abundances. Isotope effects. Isotopic-mass balance calculations (two-component and multiple-component mixing models). A potential new access to neutrons.  . Yong. . Joong. LEE (ESS). Mikael Jensen.  . (DTU-NUTECH). April 30, 2019. Kick-off Meeting on New H2020 Project, . Erice. , . Italy. Mission Statement: ESS Radioisotope Production Station. Exploration. . *Geochemistry in Mineral Explora. tion. , 2. nd. Edition, 1981, New York. By: Ross A. W., . Hawkes. H. E. and Webb J. S.. *Introduction to Exploration Geochemistry. , 2. nd. Edition, 1980, USA. Biology. Shane . Lamos. Vermont Genetics Network Annual Retreat. August 7, 2013. 1. Systems Biology -. 2. Seeks to discover the link between molecules and physiology . Top Down – “. omics. ”, phenomenon based.